Magnitude 4.0 - Lake Pillsbury, California Earthquake

USGS Earthquake Hazards Program

M 4.0 - 10 km N of Lake Pillsbury, CA

Wed, 28 Oct 2026 12:01:11 GMT | Oct 28, 2026, 8:01 PM (Local) | 39.5005° N, 122.9518° W | Depth: 10.6 km

Magnitude

4.0

MW Scale

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P

PAGER Loss Impact

GREEN ALERT · MINIMAL DAMAGE

IV

Maximum Shaking (MMI)

3.7 - Light

T

Tsunami Bulletin

No Tsunami Threat Warning

🗺️ USGS ShakeMap (Instrumental Intensity & Shaking)

MMI Instrumental Intensity Contours

Epicenter: 39.500°, -122.952°

ShakeMap Intensity Heat Overlay Opacity:

70%

Modified Mercalli Intensity (MMI) Scale Legend USGS ShakeMap Classification

I

Not Felt

II-III

Weak

IV

Light

V

Moderate

VI

Strong

VII

Very Strong

VIII

Severe

IX

Violent

X+

Extreme

Epicenter: 39.5005° N, 122.9518° W · Depth: 10.6 km

Official USGS NEIC Macroseismic Instrumental Intensity Map Open High-Resolution Image

👥 USGS "Did You Feel It?" (DYFI) Citizen Intensity Map

6 Citizen Reports Max CDI 3.8 10 km UTM Aggregated

Dedicated citizen shaking map compiled from public DYFI questionnaires. Data is aggregated into 10 km Universal Transverse Mercator (UTM) geographic grid cells with Community Decile Intensity (CDI).

USGS (DYFI) Citizen Intensity Map · 10km UTM Grids

6 Felt Reports

10km Grid Cell Opacity: 65%

Community Decile Intensity (CDI) Scale USGS "Did You Feel It?" Standard

I

Not Felt

II-III

Weak

IV

Light

V

Moderate

VI

Strong

VII

Very Strong

VIII+

Severe

Click any grid polygon to inspect CDI value, citizen response count, and distance from epicenter.

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Impacted Cities (Divided by MMI Tabs)

All 95 cities from USGS · Sorted by highest population within each intensity tab

City / Region	MMI Intensity	Population (Sorted)	Distance
MMI III & Under · Weak / Not Felt (95 cities sorted by population)
Chico	I	112.132	101 km
Ukiah	II	16.728	45 km
Clearlake	I	16.468	66 km
Red Bluff	I	14.557	96 km
Healdsburg	I	11.439	98 km
Cloverdale	I	9.023	79 km
Orland	I	8.168	71 km
Corning	I	8.156	81 km
Fort Bragg	I	7.049	73 km
Colusa	I	6.359	87 km
Willows	II	6.241	65 km
Hidden Valley Lake	I	6.155	85 km
Durham	I	5.989	101 km
Williams	I	5.520	80 km
Calistoga	I	5.267	107 km
Lakeport	II	5.048	51 km
Willits	II	5.008	36 km
Brooktrails	II	4.462	39 km
Clearlake Riviera	I	4.357	64 km
Kelseyville	II	3.873	60 km
Esparto	I	3.733	120 km
Lake California	I	3.668	115 km
Arbuckle	I	3.325	94 km
Lucerne	I	3.004	50 km
North Lakeport	II	2.986	46 km
Nice	II	2.655	42 km
Hamilton City	I	2.216	85 km
Clearlake Oaks	I	2.171	59 km
Los Molinos	I	1.906	94 km
Redwood Valley	III	1.798	34 km
Rancho Tehama Reserve	I	1.700	71 km
Middletown	I	1.577	88 km
Redway	I	1.537	101 km
Monument Hills	I	1.508	131 km
Garberville	I	1.416	98 km
Upper Lake	II	1.377	37 km
Covelo	II	1.317	42 km
Maxwell	I	1.107	70 km
Dunnigan	I	1.081	108 km
Sea Ranch	I	1.078	97 km
Gerber	I	1.049	93 km
Boonville	I	1.044	65 km
Lower Lake	I	1.036	72 km
Talmage	II	989	45 km
Soda Bay	II	954	57 km
Hopland	I	922	61 km
Cleone	I	892	71 km
Geyserville	I	865	87 km
Laytonville	I	770	50 km
Shelter Cove	I	759	112 km
Mendocino	I	715	75 km
Cobb	I	646	77 km
Calpella	II	617	37 km
Richfield	I	499	85 km
Tehama	I	483	91 km
Madison	I	478	125 km
Potter Valley	III	460	24 km
Grimes	I	442	102 km
Point Arena	I	437	92 km
Bend	I	415	105 km
Miranda	I	412	110 km
Meridian	I	360	98 km
Anchor Bay	I	323	93 km
Princeton	I	316	81 km
Nord	I	313	91 km
Manchester	I	280	86 km
Albion	II	274	76 km
Caspar	I	269	75 km
Comptche	II	263	61 km
Yolo	I	243	130 km
Vina	I	231	91 km
Philo	I	206	64 km
Benbow	I	199	93 km
Little River	I	186	76 km
Rumsey	I	169	91 km
Lodoga	II	164	44 km
Artois	II	161	67 km
Ruth	I	157	95 km
College City	I	153	98 km
Elk Creek	I	153	37 km
Flournoy	I	148	64 km
Myers Flat	I	131	116 km
Guinda	I	95	99 km
Alderpoint	I	90	93 km
Proberta	I	80	92 km
Weott	I	78	123 km
Stonyford	II	72	38 km
Paskenta	I	56	55 km
Paynes Creek	I	47	129 km
Leggett	I	45	78 km
Dales	I	29	118 km
Tancred	I	28	107 km
Platina	I	24	96 km
Phillipsville	I	N/A	106 km
Brooks	I	N/A	110 km

Click any MMI tab above to isolate intensity levels Total: 95 USGS Monitored Cities

🏛️ Regional Earthquakes Archive Prioritized by Magnitude

Major historical shocks (M6.0+ & M7.0+ up to 300 km) and significant regional events

Regional earthquakes prioritized by highest magnitude (major past ruptures and strong historical analogs). Click any row (▾ Map) to reveal an interactive satellite location map with distance comparison to the mainshock epicenter.

SORT:

MAG	Date & Time (UTC)	Location	Depth
7.9	Apr 18, 1906 01:12 PM	The 1906 San Francisco, California Earthquake	11.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.7500°, -122.5500° Spatial Relative Telemetry M 7.9 Distance to Epicenter 198 km (123 mi) Direction S Focal Depth 11.7 km (7.3 mi) Origin Timestamp Apr 18, 1906 01:12 PM UTC
7.4	Jan 31, 1922 01:17 PM	123 km W of Big Lagoon, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.1890°, -125.6080° Spatial Relative Telemetry M 7.4 Distance to Epicenter 293 km (182 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jan 31, 1922 01:17 PM UTC
7.2	Apr 25, 1992 06:06 PM	The 1992 Petrolia, California Earthquake	9.9 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3353°, -124.2287° Spatial Relative Telemetry M 7.2 Distance to Epicenter 143 km (89 mi) Direction NW Focal Depth 9.9 km (6.2 mi) Origin Timestamp Apr 25, 1992 06:06 PM UTC
7.2	Nov 8, 1980 10:27 AM	The 1980 Eureka, California Earthquake	19.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.1170°, -124.2530° Spatial Relative Telemetry M 7.2 Distance to Epicenter 211 km (131 mi) Direction NNW Focal Depth 19.0 km (11.8 mi) Origin Timestamp Nov 8, 1980 10:27 AM UTC
7.1	Sep 1, 1994 03:15 PM	121 km W of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4020°, -125.6800° Spatial Relative Telemetry M 7.1 Distance to Epicenter 253 km (157 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 1, 1994 03:15 PM UTC
7.1	Jan 22, 1923 09:04 AM	The 1923 Humboldt County, California Earthquake	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4820°, -125.0340° Spatial Relative Telemetry M 7.1 Distance to Epicenter 208 km (129 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jan 22, 1923 09:04 AM UTC
7.0	Dec 5, 2024 06:44 PM	2024 Offshore Cape Mendocino, California Earthquake	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3740°, -125.0217° Spatial Relative Telemetry M 7.0 Distance to Epicenter 201 km (125 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 5, 2024 06:44 PM UTC
6.9	Oct 18, 1989 12:04 AM	The 1989 Loma Prieta, California Earthquake	17.2 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.0362°, -121.8798° Spatial Relative Telemetry M 6.9 Distance to Epicenter 290 km (180 mi) Direction SSE Focal Depth 17.2 km (10.7 mi) Origin Timestamp Oct 18, 1989 12:04 AM UTC
6.8	Mar 10, 2014 05:18 AM	77 km WNW of Indianola, California	16.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.8287°, -125.1338° Spatial Relative Telemetry M 6.8 Distance to Epicenter 237 km (147 mi) Direction NW Focal Depth 16.4 km (10.2 mi) Origin Timestamp Mar 10, 2014 05:18 AM UTC
6.8	Nov 25, 1954 11:16 AM	123 km W of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4470°, -125.7110° Spatial Relative Telemetry M 6.8 Distance to Epicenter 258 km (160 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Nov 25, 1954 11:16 AM UTC
6.8	Feb 9, 1941 09:44 AM	84 km W of Ferndale, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6510°, -125.2620° Spatial Relative Telemetry M 6.8 Distance to Epicenter 235 km (146 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Feb 9, 1941 09:44 AM UTC
6.8	Jul 6, 1934 10:48 PM	off the coast of Northern California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.1470°, -125.5890° Spatial Relative Telemetry M 6.8 Distance to Epicenter 289 km (180 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jul 6, 1934 10:48 PM UTC
6.6	Dec 8, 2016 02:49 PM	164 km W of Ferndale, California	8.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4535°, -126.1936° Spatial Relative Telemetry M 6.6 Distance to Epicenter 296 km (184 mi) Direction WNW Focal Depth 8.4 km (5.2 mi) Origin Timestamp Dec 8, 2016 02:49 PM UTC
6.6	Feb 19, 1995 04:03 AM	126 km W of Ferndale, California	4.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5918°, -125.7567° Spatial Relative Telemetry M 6.6 Distance to Epicenter 268 km (167 mi) Direction WNW Focal Depth 4.6 km (2.9 mi) Origin Timestamp Feb 19, 1995 04:03 AM UTC
6.6	Apr 26, 1992 11:18 AM	32 km SW of Ferndale, California	21.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3828°, -124.5550° Spatial Relative Telemetry M 6.6 Distance to Epicenter 168 km (104 mi) Direction NW Focal Depth 21.7 km (13.5 mi) Origin Timestamp Apr 26, 1992 11:18 AM UTC
6.5	Jan 10, 2010 12:27 AM	The 2010 Eureka, California Earthquake	28.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6520°, -124.6925° Spatial Relative Telemetry M 6.5 Distance to Epicenter 196 km (122 mi) Direction NW Focal Depth 28.7 km (17.8 mi) Origin Timestamp Jan 10, 2010 12:27 AM UTC
6.5	Apr 26, 1992 07:41 AM	30 km WSW of Ferndale, California	18.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4325°, -124.5660° Spatial Relative Telemetry M 6.5 Distance to Epicenter 172 km (107 mi) Direction NW Focal Depth 18.8 km (11.7 mi) Origin Timestamp Apr 26, 1992 07:41 AM UTC
6.5	Oct 3, 1941 04:13 PM	68 km W of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4880°, -125.0640° Spatial Relative Telemetry M 6.5 Distance to Epicenter 211 km (131 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 3, 1941 04:13 PM UTC
6.5	Jun 6, 1932 08:44 AM	The 1932 Eureka, California Earthquake	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.7290°, -124.2870° Spatial Relative Telemetry M 6.5 Distance to Epicenter 178 km (111 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jun 6, 1932 08:44 AM UTC
6.5	Jul 15, 1918 12:23 AM	52 km WNW of Big Lagoon, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.3250°, -124.7200° Spatial Relative Telemetry M 6.5 Distance to Epicenter 252 km (157 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jul 15, 1918 12:23 AM UTC
6.5	Jul 1, 1911 09:59 PM	Near Morgan Hill, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.1110°, -121.6370° Spatial Relative Telemetry M 6.5 Distance to Epicenter 289 km (180 mi) Direction SSE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jul 1, 1911 09:59 PM UTC
6.4	Dec 20, 2022 10:34 AM	15km WSW of Ferndale, CA	17.9 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5250°, -124.4230° Spatial Relative Telemetry M 6.4 Distance to Epicenter 169 km (105 mi) Direction NW Focal Depth 17.9 km (11.1 mi) Origin Timestamp Dec 20, 2022 10:34 AM UTC
6.4	Oct 11, 1956 04:48 PM	155 km W of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4220°, -126.0900° Spatial Relative Telemetry M 6.4 Distance to Epicenter 286 km (178 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 11, 1956 04:48 PM UTC
6.4	Dec 21, 1954 07:56 PM	The 1954 Eureka-Arcata, California Earthquake	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.8460°, -123.8930° Spatial Relative Telemetry M 6.4 Distance to Epicenter 170 km (106 mi) Direction NNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Dec 21, 1954 07:56 PM UTC
6.4	Aug 11, 1907 12:19 PM	Off the coast of Northern California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -125.5000° Spatial Relative Telemetry M 6.4 Distance to Epicenter 244 km (152 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Aug 11, 1907 12:19 PM UTC
6.4	Apr 23, 1906 09:10 AM	Northwest of Eureka, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.0000°, -124.5000° Spatial Relative Telemetry M 6.4 Distance to Epicenter 212 km (132 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Apr 23, 1906 09:10 AM UTC
6.3	Nov 26, 1976 11:19 AM	67 km W of Trinidad, California	41.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.0352°, -124.9497° Spatial Relative Telemetry M 6.3 Distance to Epicenter 241 km (150 mi) Direction NW Focal Depth 41.8 km (26.0 mi) Origin Timestamp Nov 26, 1976 11:19 AM UTC
6.3	Jul 24, 1959 01:23 AM	off the coast of Northern California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.0120°, -125.2470° Spatial Relative Telemetry M 6.3 Distance to Epicenter 257 km (160 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jul 24, 1959 01:23 AM UTC
6.3	Oct 22, 1926 01:35 PM	16 km SW of Davenport, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 36.9240°, -122.3410° Spatial Relative Telemetry M 6.3 Distance to Epicenter 291 km (181 mi) Direction S Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 22, 1926 01:35 PM UTC
6.2	Dec 20, 2021 08:10 PM	7km N of Petrolia, CA	27.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3902°, -124.2980° Spatial Relative Telemetry M 6.2 Distance to Epicenter 152 km (94 mi) Direction NW Focal Depth 27.0 km (16.8 mi) Origin Timestamp Dec 20, 2021 08:10 PM UTC
6.2	Apr 24, 1984 09:15 PM	The 1984 Morgan Hill, California Earthquake	8.2 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.3097°, -121.6788° Spatial Relative Telemetry M 6.2 Distance to Epicenter 268 km (167 mi) Direction SSE Focal Depth 8.2 km (5.1 mi) Origin Timestamp Apr 24, 1984 09:15 PM UTC
6.2	Aug 3, 1903 06:49 AM	Near San Jose, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.3000°, -121.8000° Spatial Relative Telemetry M 6.2 Distance to Epicenter 264 km (164 mi) Direction SSE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Aug 3, 1903 06:49 AM UTC
6.1	Sep 12, 1994 12:23 PM	4 km S of Carter Springs, Nevada	14.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8190°, -119.6520° Spatial Relative Telemetry M 6.1 Distance to Epicenter 294 km (183 mi) Direction ESE Focal Depth 14.0 km (8.7 mi) Origin Timestamp Sep 12, 1994 12:23 PM UTC
6.1	Jun 3, 1936 09:15 AM	123 km WSW of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3130°, -125.6760° Spatial Relative Telemetry M 6.1 Distance to Epicenter 249 km (155 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 3, 1936 09:15 AM UTC
6.1	Jun 11, 1903 01:12 PM	Near San Jose, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.2000°, -121.8000° Spatial Relative Telemetry M 6.1 Distance to Epicenter 275 km (171 mi) Direction SSE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 11, 1903 01:12 PM UTC
6.0	Aug 24, 2014 10:20 AM	The 2014 South Napa, California Earthquake	11.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.2152°, -122.3123° Spatial Relative Telemetry M 6.0 Distance to Epicenter 153 km (95 mi) Direction SSE Focal Depth 11.1 km (6.9 mi) Origin Timestamp Aug 24, 2014 10:20 AM UTC
6.0	Aug 17, 1991 07:29 PM	30 km SSW of Scotia, California	8.3 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2517°, -124.2858° Spatial Relative Telemetry M 6.0 Distance to Epicenter 141 km (88 mi) Direction NW Focal Depth 8.3 km (5.2 mi) Origin Timestamp Aug 17, 1991 07:29 PM UTC
6.0	Mar 1, 1972 09:28 AM	105 km W of Ferndale, California	11.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5280°, -125.5020° Spatial Relative Telemetry M 6.0 Distance to Epicenter 245 km (152 mi) Direction WNW Focal Depth 11.1 km (6.9 mi) Origin Timestamp Mar 1, 1972 09:28 AM UTC
6.0	Dec 10, 1967 12:06 PM	33 km WSW of Ferndale, California	17.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5100°, -124.6530° Spatial Relative Telemetry M 6.0 Distance to Epicenter 183 km (114 mi) Direction NW Focal Depth 17.5 km (10.9 mi) Origin Timestamp Dec 10, 1967 12:06 PM UTC
6.0	Jun 6, 1960 01:17 AM	near the coast of Northern California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.7290°, -124.7920° Spatial Relative Telemetry M 6.0 Distance to Epicenter 208 km (129 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jun 6, 1960 01:17 AM UTC
6.0	Sep 22, 1952 11:41 AM	31 km NW of Shelter Cove, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2340°, -124.3220° Spatial Relative Telemetry M 6.0 Distance to Epicenter 143 km (89 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Sep 22, 1952 11:41 AM UTC
6.0	Oct 8, 1951 04:10 AM	53 km SW of Ferndale, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2380°, -124.7130° Spatial Relative Telemetry M 6.0 Distance to Epicenter 171 km (106 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Oct 8, 1951 04:10 AM UTC
6.0	Dec 29, 1948 12:53 PM	6 km WNW of Verdi, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5500°, -120.0800° Spatial Relative Telemetry M 6.0 Distance to Epicenter 246 km (153 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 29, 1948 12:53 PM UTC
6.0	Dec 20, 1940 11:40 PM	44 km SW of Shelter Cove, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.7340°, -124.4150° Spatial Relative Telemetry M 6.0 Distance to Epicenter 128 km (80 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Dec 20, 1940 11:40 PM UTC
6.0	Jun 4, 1925 12:02 PM	72 km WSW of Crescent City, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.5000°, -125.0000° Spatial Relative Telemetry M 6.0 Distance to Epicenter 282 km (175 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 4, 1925 12:02 PM UTC
6.0	Feb 18, 1914 06:17 PM	Near Reno, Nevada	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5000°, -119.8000° Spatial Relative Telemetry M 6.0 Distance to Epicenter 270 km (168 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Feb 18, 1914 06:17 PM UTC
6.0	Mar 19, 1910 12:11 AM	Offshore Humboldt County, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0000°, -125.0000° Spatial Relative Telemetry M 6.0 Distance to Epicenter 184 km (114 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Mar 19, 1910 12:11 AM UTC
6.0	Oct 29, 1909 06:45 AM	Near Rio Dell, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -124.2000° Spatial Relative Telemetry M 6.0 Distance to Epicenter 154 km (96 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 29, 1909 06:45 AM UTC
5.9	Feb 4, 2010 08:20 PM	61 km WSW of Ferndale, California	23.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4123°, -124.9613° Spatial Relative Telemetry M 5.9 Distance to Epicenter 199 km (124 mi) Direction WNW Focal Depth 23.0 km (14.3 mi) Origin Timestamp Feb 4, 2010 08:20 PM UTC
5.9	Jun 26, 1968 01:42 AM	29 km W of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0710°, -124.4090° Spatial Relative Telemetry M 5.9 Distance to Epicenter 140 km (87 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 26, 1968 01:42 AM UTC
5.9	Sep 12, 1966 04:41 PM	9 km NW of Truckee, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.3950°, -120.2600° Spatial Relative Telemetry M 5.9 Distance to Epicenter 231 km (144 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 12, 1966 04:41 PM UTC
5.9	Aug 23, 1962 07:29 PM	5 km NNE of Hiouchi, California	25.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.8380°, -124.0480° Spatial Relative Telemetry M 5.9 Distance to Epicenter 276 km (171 mi) Direction NNW Focal Depth 25.0 km (15.5 mi) Origin Timestamp Aug 23, 1962 07:29 PM UTC
5.9	Dec 27, 1960 10:35 AM	81 km WSW of Crescent City, California	20.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.4160°, -125.0740° Spatial Relative Telemetry M 5.9 Distance to Epicenter 279 km (173 mi) Direction NW Focal Depth 20.0 km (12.4 mi) Origin Timestamp Dec 27, 1960 10:35 AM UTC
5.9	Feb 7, 1937 04:41 AM	62 km W of Ferndale, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6530°, -125.0010° Spatial Relative Telemetry M 5.9 Distance to Epicenter 216 km (134 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Feb 7, 1937 04:41 AM UTC
5.9	Sep 9, 1931 01:40 PM	9 km S of Leggett, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.7810°, -123.7350° Spatial Relative Telemetry M 5.9 Distance to Epicenter 74 km (46 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Sep 9, 1931 01:40 PM UTC
5.9	Jun 23, 1909 07:24 AM	West of Downieville, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5000°, -121.0000° Spatial Relative Telemetry M 5.9 Distance to Epicenter 167 km (104 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 23, 1909 07:24 AM UTC
5.8	Mar 9, 2020 02:59 AM	69km W of Petrolia, CA	3.2 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3917°, -125.0937° Spatial Relative Telemetry M 5.8 Distance to Epicenter 208 km (129 mi) Direction WNW Focal Depth 3.2 km (2.0 mi) Origin Timestamp Mar 9, 2020 02:59 AM UTC
5.8	Jan 24, 1980 07:00 PM	The 1980 Livermore, California Earthquake	14.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.8400°, -121.7678° Spatial Relative Telemetry M 5.8 Distance to Epicenter 211 km (131 mi) Direction SSE Focal Depth 14.5 km (9.0 mi) Origin Timestamp Jan 24, 1980 07:00 PM UTC
5.8	Aug 6, 1979 05:05 PM	The 1979 Coyote Lake, California Earthquake	8.3 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.1038°, -121.5123° Spatial Relative Telemetry M 5.8 Distance to Epicenter 295 km (183 mi) Direction SSE Focal Depth 8.3 km (5.2 mi) Origin Timestamp Aug 6, 1979 05:05 PM UTC
5.8	Sep 5, 1955 02:01 AM	7 km NNW of Boulder Creek, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.1890°, -122.1450° Spatial Relative Telemetry M 5.8 Distance to Epicenter 266 km (165 mi) Direction SSE Focal Depth 15.0 km (9.3 mi) Origin Timestamp Sep 5, 1955 02:01 AM UTC
5.8	Sep 12, 1938 06:10 AM	44 km SW of Ferndale, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2520°, -124.5740° Spatial Relative Telemetry M 5.8 Distance to Epicenter 162 km (101 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Sep 12, 1938 06:10 AM UTC
5.8	Sep 9, 1931 01:40 PM	near the coast of Northern California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.8000°, -125.0000° Spatial Relative Telemetry M 5.8 Distance to Epicenter 226 km (140 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 9, 1931 01:40 PM UTC
5.8	Apr 29, 1923 02:31 AM	42 km WSW of Shelter Cove, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.9540°, -124.5560° Spatial Relative Telemetry M 5.8 Distance to Epicenter 146 km (91 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Apr 29, 1923 02:31 AM UTC
5.8	Aug 18, 1908 10:59 AM	Near Eureka, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.8000°, -124.0000° Spatial Relative Telemetry M 5.8 Distance to Epicenter 170 km (106 mi) Direction NNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Aug 18, 1908 10:59 AM UTC
5.7	Dec 20, 2021 08:10 PM	29km W of Petrolia, CA	16.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2978°, -124.6260° Spatial Relative Telemetry M 5.7 Distance to Epicenter 168 km (104 mi) Direction WNW Focal Depth 16.5 km (10.3 mi) Origin Timestamp Dec 20, 2021 08:10 PM UTC
5.7	Jan 28, 2015 09:08 PM	40 km SW of Ferndale, California	16.9 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3178°, -124.6067° Spatial Relative Telemetry M 5.7 Distance to Epicenter 168 km (104 mi) Direction WNW Focal Depth 16.9 km (10.5 mi) Origin Timestamp Jan 28, 2015 09:08 PM UTC
5.7	May 24, 2013 03:47 AM	2 km NNE of Canyondam, California	8.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.1918°, -121.0595° Spatial Relative Telemetry M 5.7 Distance to Epicenter 179 km (111 mi) Direction ENE Focal Depth 8.0 km (5.0 mi) Origin Timestamp May 24, 2013 03:47 AM UTC
5.7	Mar 16, 2000 03:19 PM	85 km WSW of Ferndale, California	4.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3887°, -125.2385° Spatial Relative Telemetry M 5.7 Distance to Epicenter 219 km (136 mi) Direction WNW Focal Depth 4.8 km (3.0 mi) Origin Timestamp Mar 16, 2000 03:19 PM UTC
5.7	Mar 31, 1986 11:55 AM	15 km NE of East Foothills, California	8.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 37.4792°, -121.6867° Spatial Relative Telemetry M 5.7 Distance to Epicenter 250 km (155 mi) Direction SSE Focal Depth 8.5 km (5.3 mi) Origin Timestamp Mar 31, 1986 11:55 AM UTC
5.7	Dec 20, 1983 10:41 AM	118 km W of Ferndale, California	8.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4080°, -125.6465° Spatial Relative Telemetry M 5.7 Distance to Epicenter 251 km (156 mi) Direction WNW Focal Depth 8.1 km (5.0 mi) Origin Timestamp Dec 20, 1983 10:41 AM UTC
5.7	Aug 1, 1975 08:20 PM	The 1975 Oroville, California Earthquake	5.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4322°, -121.5458° Spatial Relative Telemetry M 5.7 Distance to Epicenter 121 km (75 mi) Direction E Focal Depth 5.0 km (3.1 mi) Origin Timestamp Aug 1, 1975 08:20 PM UTC
5.7	Aug 23, 1931 06:01 PM	130 km WSW of Ferndale, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0020°, -125.5970° Spatial Relative Telemetry M 5.7 Distance to Epicenter 233 km (145 mi) Direction WNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Aug 23, 1931 06:01 PM UTC
5.6	Jun 24, 2026 03:10 PM	11 km N of Redwood Valley, CA	8.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.3623°, -123.2288° Spatial Relative Telemetry M 5.6 Distance to Epicenter 28 km (17 mi) Direction WSW Focal Depth 8.8 km (5.5 mi) Origin Timestamp Jun 24, 2026 03:10 PM UTC
5.6	Jun 23, 2019 03:53 AM	6km SSW of Petrolia, CA	9.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2735°, -124.3003° Spatial Relative Telemetry M 5.6 Distance to Epicenter 144 km (89 mi) Direction NW Focal Depth 9.4 km (5.8 mi) Origin Timestamp Jun 23, 2019 03:53 AM UTC
5.6	Sep 3, 2016 03:27 AM	124 km WSW of Ferndale, California	28.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3208°, -125.6877° Spatial Relative Telemetry M 5.6 Distance to Epicenter 251 km (156 mi) Direction WNW Focal Depth 28.6 km (17.8 mi) Origin Timestamp Sep 3, 2016 03:27 AM UTC
5.6	Feb 13, 2012 09:07 PM	26 km NNW of Willow Creek, California	27.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.1432°, -123.7903° Spatial Relative Telemetry M 5.6 Distance to Epicenter 196 km (122 mi) Direction NNW Focal Depth 27.4 km (17.0 mi) Origin Timestamp Feb 13, 2012 09:07 PM UTC
5.6	Jan 22, 1997 07:17 AM	33 km SW of Scotia, California	23.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2737°, -124.3792° Spatial Relative Telemetry M 5.6 Distance to Epicenter 149 km (93 mi) Direction NW Focal Depth 23.0 km (14.3 mi) Origin Timestamp Jan 22, 1997 07:17 AM UTC
5.6	Jul 31, 1987 11:56 PM	20 km SSW of Ferndale, California	16.9 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4157°, -124.3827° Spatial Relative Telemetry M 5.6 Distance to Epicenter 159 km (99 mi) Direction NW Focal Depth 16.9 km (10.5 mi) Origin Timestamp Jul 31, 1987 11:56 PM UTC
5.6	Sep 16, 1965 04:10 AM	115 km W of Ferndale, California	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3900°, -125.6000° Spatial Relative Telemetry M 5.6 Distance to Epicenter 246 km (153 mi) Direction WNW Focal Depth 33.0 km (20.5 mi) Origin Timestamp Sep 16, 1965 04:10 AM UTC
5.6	Mar 10, 1931 03:28 AM	near the coast of Northern California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0000°, -125.0000° Spatial Relative Telemetry M 5.6 Distance to Epicenter 184 km (114 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Mar 10, 1931 03:28 AM UTC
5.6	Aug 20, 1927 08:06 PM	15 km SW of Burnt Ranch, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.7150°, -123.6160° Spatial Relative Telemetry M 5.6 Distance to Epicenter 146 km (91 mi) Direction NNW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Aug 20, 1927 08:06 PM UTC
5.6	Apr 29, 1923 02:31 AM	71 km WNW of Samoa, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 41.0000°, -125.0000° Spatial Relative Telemetry M 5.6 Distance to Epicenter 241 km (150 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Apr 29, 1923 02:31 AM UTC
5.5	Sep 12, 1938 06:10 AM	7 km ESE of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0000°, -124.0000° Spatial Relative Telemetry M 5.5 Distance to Epicenter 105 km (65 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 12, 1938 06:10 AM UTC
5.5	Mar 20, 1920 05:48 PM	33 km NW of Rancho Tehama Reserve, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.1990°, -122.7120° Spatial Relative Telemetry M 5.5 Distance to Epicenter 80 km (50 mi) Direction NNE Focal Depth 15.0 km (9.3 mi) Origin Timestamp Mar 20, 1920 05:48 PM UTC
5.4	Jan 16, 1990 08:08 PM	30 km NW of Shelter Cove, California	3.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2425°, -124.2975° Spatial Relative Telemetry M 5.4 Distance to Epicenter 141 km (88 mi) Direction NW Focal Depth 3.8 km (2.4 mi) Origin Timestamp Jan 16, 1990 08:08 PM UTC
5.3	Jan 1, 2023 06:35 PM	15km SE of Rio Dell, CA	30.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4090°, -123.9710° Spatial Relative Telemetry M 5.3 Distance to Epicenter 133 km (83 mi) Direction NW Focal Depth 30.6 km (19.0 mi) Origin Timestamp Jan 1, 2023 06:35 PM UTC
5.3	Mar 8, 1992 03:43 AM	27 km NW of Shelter Cove, California	9.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2327°, -124.2625° Spatial Relative Telemetry M 5.3 Distance to Epicenter 138 km (86 mi) Direction NW Focal Depth 9.5 km (5.9 mi) Origin Timestamp Mar 8, 1992 03:43 AM UTC
5.3	Oct 2, 1969 06:19 AM	Northern California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.3210°, -122.8260° Spatial Relative Telemetry M 5.3 Distance to Epicenter 132 km (82 mi) Direction S Focal Depth 15.0 km (9.3 mi) Origin Timestamp Oct 2, 1969 06:19 AM UTC
5.3	Oct 2, 1969 04:56 AM	3 km E of Bloomfield, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.3150°, -122.8070° Spatial Relative Telemetry M 5.3 Distance to Epicenter 132 km (82 mi) Direction S Focal Depth 15.0 km (9.3 mi) Origin Timestamp Oct 2, 1969 04:56 AM UTC
5.3	Feb 7, 1969 09:25 PM	18 km SSW of Scotia, California	24.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3250°, -124.1740° Spatial Relative Telemetry M 5.3 Distance to Epicenter 139 km (86 mi) Direction NW Focal Depth 24.8 km (15.4 mi) Origin Timestamp Feb 7, 1969 09:25 PM UTC
5.2	Aug 2, 1975 08:58 PM	4 km E of Palermo, California	1.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4378°, -121.4848° Spatial Relative Telemetry M 5.2 Distance to Epicenter 126 km (78 mi) Direction E Focal Depth 1.5 km (0.9 mi) Origin Timestamp Aug 2, 1975 08:58 PM UTC
5.2	Jun 6, 1962 05:50 PM	6 km ESE of Talmage, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.1160°, -123.0970° Spatial Relative Telemetry M 5.2 Distance to Epicenter 45 km (28 mi) Direction SSW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 6, 1962 05:50 PM UTC
5.1	Aug 10, 2016 02:57 AM	20 km NNE of Upper Lake, California	14.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.3293°, -122.8018° Spatial Relative Telemetry M 5.1 Distance to Epicenter 23 km (14 mi) Direction SE Focal Depth 14.4 km (8.9 mi) Origin Timestamp Aug 10, 2016 02:57 AM UTC
5.1	Nov 26, 1998 07:49 PM	7km NW of Redding, CA	24.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6262°, -122.4140° Spatial Relative Telemetry M 5.1 Distance to Epicenter 133 km (83 mi) Direction NNE Focal Depth 24.6 km (15.3 mi) Origin Timestamp Nov 26, 1998 07:49 PM UTC
5.1	Aug 2, 1975 08:22 PM	5 km ENE of Palermo, California	1.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4493°, -121.4795° Spatial Relative Telemetry M 5.1 Distance to Epicenter 126 km (78 mi) Direction E Focal Depth 1.7 km (1.1 mi) Origin Timestamp Aug 2, 1975 08:22 PM UTC
5.1	Aug 9, 1973 02:18 AM	27 km SSW of Scotia, California	2.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2600°, -124.2330° Spatial Relative Telemetry M 5.1 Distance to Epicenter 138 km (86 mi) Direction NW Focal Depth 2.0 km (1.2 mi) Origin Timestamp Aug 9, 1973 02:18 AM UTC
5.1	Jun 26, 1968 10:47 AM	26 km NW of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2000°, -124.3000° Spatial Relative Telemetry M 5.1 Distance to Epicenter 139 km (86 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 26, 1968 10:47 AM UTC
5.0	Dec 14, 2016 04:41 PM	10 km W of Cobb, California	1.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8222°, -122.8413° Spatial Relative Telemetry M 5.0 Distance to Epicenter 76 km (47 mi) Direction S Focal Depth 1.5 km (0.9 mi) Origin Timestamp Dec 14, 2016 04:41 PM UTC
5.0	Nov 17, 1934 05:42 PM	2 km E of Rio Dell, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -124.0800° Spatial Relative Telemetry M 5.0 Distance to Epicenter 147 km (91 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Nov 17, 1934 05:42 PM UTC
5.0	Dec 11, 1930 08:58 AM	36 km W of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0800°, -124.5000° Spatial Relative Telemetry M 5.0 Distance to Epicenter 147 km (91 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 11, 1930 08:58 AM UTC
4.9	Sep 3, 2000 08:36 AM	5 km WSW of Yountville, California	9.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.3788°, -122.4133° Spatial Relative Telemetry M 4.9 Distance to Epicenter 133 km (83 mi) Direction SSE Focal Depth 9.4 km (5.8 mi) Origin Timestamp Sep 3, 2000 08:36 AM UTC
4.9	Aug 8, 1975 07:00 AM	3 km WSW of Oroville East, California	8.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5012°, -121.5120° Spatial Relative Telemetry M 4.9 Distance to Epicenter 124 km (77 mi) Direction E Focal Depth 8.1 km (5.0 mi) Origin Timestamp Aug 8, 1975 07:00 AM UTC
4.9	May 24, 1958 11:04 PM	11 km WSW of Weott, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3000°, -124.0500° Spatial Relative Telemetry M 4.9 Distance to Epicenter 129 km (80 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp May 24, 1958 11:04 PM UTC
4.8	Oct 16, 2023 10:20 AM	20 km E of Petrolia, CA	31.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3157°, -124.0548° Spatial Relative Telemetry M 4.8 Distance to Epicenter 131 km (81 mi) Direction NW Focal Depth 31.1 km (19.3 mi) Origin Timestamp Oct 16, 2023 10:20 AM UTC
4.8	Apr 18, 2007 08:42 AM	15 km N of Potter Valley, California	4.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4645°, -123.1073° Spatial Relative Telemetry M 4.8 Distance to Epicenter 14 km (9 mi) Direction WSW Focal Depth 4.7 km (2.9 mi) Origin Timestamp Apr 18, 2007 08:42 AM UTC
4.8	Sep 4, 1995 02:16 PM	13 km SW of Middletown, California	6.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.6830°, -122.7435° Spatial Relative Telemetry M 4.8 Distance to Epicenter 93 km (58 mi) Direction SSE Focal Depth 6.6 km (4.1 mi) Origin Timestamp Sep 4, 1995 02:16 PM UTC
4.8	Nov 22, 1977 09:15 PM	8 km E of Willits, California	14.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4093°, -123.2567° Spatial Relative Telemetry M 4.8 Distance to Epicenter 28 km (17 mi) Direction WSW Focal Depth 14.6 km (9.1 mi) Origin Timestamp Nov 22, 1977 09:15 PM UTC
4.8	Nov 12, 1973 03:39 AM	7 km S of Willits, California	18.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.3430°, -123.3630° Spatial Relative Telemetry M 4.8 Distance to Epicenter 39 km (24 mi) Direction WSW Focal Depth 18.0 km (11.2 mi) Origin Timestamp Nov 12, 1973 03:39 AM UTC
4.8	Apr 29, 1968 12:21 AM	8 km NW of Princeton, California	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4640°, -122.0690° Spatial Relative Telemetry M 4.8 Distance to Epicenter 76 km (47 mi) Direction E Focal Depth 15.0 km (9.3 mi) Origin Timestamp Apr 29, 1968 12:21 AM UTC
4.8	Dec 14, 1930 01:38 AM	2 km E of Rio Dell, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -124.0800° Spatial Relative Telemetry M 4.8 Distance to Epicenter 147 km (91 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 14, 1930 01:38 AM UTC
4.7	Jan 2, 2025 02:34 AM	4 km NW of Cobb, CA	1.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8455°, -122.7563° Spatial Relative Telemetry M 4.7 Distance to Epicenter 75 km (47 mi) Direction SSE Focal Depth 1.4 km (0.9 mi) Origin Timestamp Jan 2, 2025 02:34 AM UTC
4.7	Jan 19, 2008 11:13 PM	31 km NW of Rancho Tehama Reserve, California	2.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.1777°, -122.7037° Spatial Relative Telemetry M 4.7 Distance to Epicenter 78 km (48 mi) Direction NNE Focal Depth 2.0 km (1.2 mi) Origin Timestamp Jan 19, 2008 11:13 PM UTC
4.7	May 12, 2006 10:37 AM	7 km W of Cobb, California	3.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8172°, -122.8138° Spatial Relative Telemetry M 4.7 Distance to Epicenter 77 km (48 mi) Direction S Focal Depth 3.6 km (2.2 mi) Origin Timestamp May 12, 2006 10:37 AM UTC
4.7	Aug 1, 1986 04:53 AM	5 km NNE of Brooktrails, California	58.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4885°, -123.3615° Spatial Relative Telemetry M 4.7 Distance to Epicenter 35 km (22 mi) Direction W Focal Depth 58.1 km (36.1 mi) Origin Timestamp Aug 1, 1986 04:53 AM UTC
4.7	Aug 6, 1975 03:50 AM	1 km E of South Oroville, California	8.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4962°, -121.5395° Spatial Relative Telemetry M 4.7 Distance to Epicenter 121 km (75 mi) Direction E Focal Depth 8.7 km (5.4 mi) Origin Timestamp Aug 6, 1975 03:50 AM UTC
4.7	Aug 1, 1975 08:25 PM	0 km ENE of Palermo, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4390°, -121.5280° Spatial Relative Telemetry M 4.7 Distance to Epicenter 122 km (76 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Aug 1, 1975 08:25 PM UTC
4.7	Aug 1, 1975 04:27 PM	2 km NNW of Palermo, California	5.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4525°, -121.5480° Spatial Relative Telemetry M 4.7 Distance to Epicenter 121 km (75 mi) Direction E Focal Depth 5.5 km (3.4 mi) Origin Timestamp Aug 1, 1975 04:27 PM UTC
4.7	Oct 14, 1962 10:14 AM	38 km SW of Point Arena, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.6800°, -124.0280° Spatial Relative Telemetry M 4.7 Distance to Epicenter 130 km (81 mi) Direction SW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 14, 1962 10:14 AM UTC
4.7	Oct 31, 1957 02:47 AM	8 km ESE of Albion, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.1830°, -123.6830° Spatial Relative Telemetry M 4.7 Distance to Epicenter 72 km (45 mi) Direction WSW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 31, 1957 02:47 AM UTC
4.7	Nov 14, 1951 08:39 AM	6 km SE of Scotia, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.4330°, -124.0500° Spatial Relative Telemetry M 4.7 Distance to Epicenter 140 km (87 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Nov 14, 1951 08:39 AM UTC
4.6	Oct 20, 2006 05:00 PM	7 km NW of Cobb, California	2.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8667°, -122.7873° Spatial Relative Telemetry M 4.6 Distance to Epicenter 72 km (45 mi) Direction SSE Focal Depth 2.5 km (1.6 mi) Origin Timestamp Oct 20, 2006 05:00 PM UTC
4.6	Feb 18, 2004 08:37 PM	4 km WNW of Cobb, California	2.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8367°, -122.7672° Spatial Relative Telemetry M 4.6 Distance to Epicenter 76 km (47 mi) Direction SSE Focal Depth 2.6 km (1.6 mi) Origin Timestamp Feb 18, 2004 08:37 PM UTC
4.6	Jan 11, 2000 02:19 PM	6 km N of Geyserville, California	5.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.7693°, -122.9138° Spatial Relative Telemetry M 4.6 Distance to Epicenter 81 km (50 mi) Direction S Focal Depth 5.8 km (3.6 mi) Origin Timestamp Jan 11, 2000 02:19 PM UTC
4.6	Nov 26, 1998 10:58 PM	5km NNW of Redding, CA	24.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6167°, -122.3982° Spatial Relative Telemetry M 4.6 Distance to Epicenter 133 km (83 mi) Direction NNE Focal Depth 24.6 km (15.3 mi) Origin Timestamp Nov 26, 1998 10:58 PM UTC
4.6	Jul 17, 1981 04:37 PM	23 km WSW of Weott, California	10.3 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2283°, -124.1685° Spatial Relative Telemetry M 4.6 Distance to Epicenter 132 km (82 mi) Direction NW Focal Depth 10.3 km (6.4 mi) Origin Timestamp Jul 17, 1981 04:37 PM UTC
4.6	Sep 27, 1975 10:34 PM	1 km ENE of Oroville, California	8.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5200°, -121.5382° Spatial Relative Telemetry M 4.6 Distance to Epicenter 121 km (75 mi) Direction E Focal Depth 8.4 km (5.2 mi) Origin Timestamp Sep 27, 1975 10:34 PM UTC
4.6	Aug 3, 1975 01:03 AM	3 km ESE of South Oroville, California	7.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4862°, -121.5192° Spatial Relative Telemetry M 4.6 Distance to Epicenter 123 km (76 mi) Direction E Focal Depth 7.1 km (4.4 mi) Origin Timestamp Aug 3, 1975 01:03 AM UTC
4.6	Aug 1, 1975 08:29 PM	0 km ENE of Palermo, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.4390°, -121.5280° Spatial Relative Telemetry M 4.6 Distance to Epicenter 122 km (76 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Aug 1, 1975 08:29 PM UTC
4.6	Jul 1, 1969 12:00 PM	26 km SW of Scotia, California	26.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3000°, -124.3000° Spatial Relative Telemetry M 4.6 Distance to Epicenter 145 km (90 mi) Direction NW Focal Depth 26.0 km (16.2 mi) Origin Timestamp Jul 1, 1969 12:00 PM UTC
4.6	Apr 25, 1968 07:49 PM	4 km NNW of Santa Rosa, California	8.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.4770°, -122.7250° Spatial Relative Telemetry M 4.6 Distance to Epicenter 115 km (71 mi) Direction S Focal Depth 8.0 km (5.0 mi) Origin Timestamp Apr 25, 1968 07:49 PM UTC
4.6	May 7, 1955 11:50 AM	5 km SSW of Kelseyville, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.9330°, -122.8670° Spatial Relative Telemetry M 4.6 Distance to Epicenter 64 km (40 mi) Direction S Focal Depth 10.0 km (6.2 mi) Origin Timestamp May 7, 1955 11:50 AM UTC
4.6	Jan 14, 1950 07:52 PM	35 km NW of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.2170°, -124.4170° Spatial Relative Telemetry M 4.6 Distance to Epicenter 148 km (92 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jan 14, 1950 07:52 PM UTC
4.6	Oct 25, 1941 07:09 AM	3 km SE of Willows, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.5000°, -122.1700° Spatial Relative Telemetry M 4.6 Distance to Epicenter 67 km (42 mi) Direction E Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 25, 1941 07:09 AM UTC
4.6	Sep 28, 1933 11:53 AM	9 km WSW of Redway, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0800°, -123.9200° Spatial Relative Telemetry M 4.6 Distance to Epicenter 105 km (65 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 28, 1933 11:53 AM UTC
4.6	Feb 25, 1919 10:38 PM	1 km NW of Fetters Hot Springs-Agua Caliente, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.3300°, -122.5000° Spatial Relative Telemetry M 4.6 Distance to Epicenter 136 km (85 mi) Direction SSE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Feb 25, 1919 10:38 PM UTC
4.5	Jan 12, 2014 08:24 PM	8 km W of Cobb, California	1.9 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.8135°, -122.8162° Spatial Relative Telemetry M 4.5 Distance to Epicenter 77 km (48 mi) Direction S Focal Depth 1.9 km (1.2 mi) Origin Timestamp Jan 12, 2014 08:24 PM UTC
4.5	Sep 25, 2012 03:15 PM	3 km N of Talmage, California	10.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.1678°, -123.1658° Spatial Relative Telemetry M 4.5 Distance to Epicenter 41 km (25 mi) Direction SSW Focal Depth 10.8 km (6.7 mi) Origin Timestamp Sep 25, 2012 03:15 PM UTC
4.5	Jan 19, 2008 05:18 PM	34 km WNW of Rancho Tehama Reserve, California	10.2 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.1672°, -122.7593° Spatial Relative Telemetry M 4.5 Distance to Epicenter 76 km (47 mi) Direction NNE Focal Depth 10.2 km (6.3 mi) Origin Timestamp Jan 19, 2008 05:18 PM UTC
4.5	Aug 3, 2006 03:08 AM	5 km W of Glen Ellen, California	8.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.3635°, -122.5887° Spatial Relative Telemetry M 4.5 Distance to Epicenter 130 km (81 mi) Direction SSE Focal Depth 8.6 km (5.3 mi) Origin Timestamp Aug 3, 2006 03:08 AM UTC
4.5	Jul 21, 1998 08:38 AM	4 km NNW of Redding, California	22.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.6257°, -122.4090° Spatial Relative Telemetry M 4.5 Distance to Epicenter 133 km (83 mi) Direction NNE Focal Depth 22.8 km (14.2 mi) Origin Timestamp Jul 21, 1998 08:38 AM UTC
4.5	Mar 26, 1978 12:27 AM	4 km SE of Calpella, California	11.6 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.2088°, -123.1565° Spatial Relative Telemetry M 4.5 Distance to Epicenter 37 km (23 mi) Direction SSW Focal Depth 11.6 km (7.2 mi) Origin Timestamp Mar 26, 1978 12:27 AM UTC
4.5	May 24, 1966 03:49 AM	8 km NE of Chico, California	20.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.7830°, -121.7700° Spatial Relative Telemetry M 4.5 Distance to Epicenter 106 km (66 mi) Direction ENE Focal Depth 20.0 km (12.4 mi) Origin Timestamp May 24, 1966 03:49 AM UTC
4.5	Mar 10, 1956 05:56 AM	23 km SSW of Scotia, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.3000°, -124.2330° Spatial Relative Telemetry M 4.5 Distance to Epicenter 141 km (88 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Mar 10, 1956 05:56 AM UTC
4.5	Oct 22, 1940 11:01 AM	0 km E of Rio Dell, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -124.1000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 148 km (92 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 22, 1940 11:01 AM UTC
4.5	Oct 18, 1938 05:05 AM	7 km ESE of Shelter Cove, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.0000°, -124.0000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 105 km (65 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Oct 18, 1938 05:05 AM UTC
4.5	Dec 12, 1930 09:32 AM	12 km ESE of Leggett, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 39.8300°, -123.5800° Spatial Relative Telemetry M 4.5 Distance to Epicenter 65 km (40 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 12, 1930 09:32 AM UTC
4.5	Dec 4, 1929 12:29 PM	8 km ENE of Scotia, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -124.0000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 143 km (89 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Dec 4, 1929 12:29 PM UTC
4.5	Jun 4, 1928 05:30 AM	2 km NE of Weaverville, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.7500°, -122.9200° Spatial Relative Telemetry M 4.5 Distance to Epicenter 139 km (86 mi) Direction N Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 4, 1928 05:30 AM UTC
4.5	Jul 30, 1904 10:26 AM	Southwest of Woodland, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 38.5000°, -122.0000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 138 km (86 mi) Direction SE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jul 30, 1904 10:26 AM UTC
4.5	Apr 16, 1904 09:20 AM	9 km S of Redding, California	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 40.5000°, -122.4000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 121 km (75 mi) Direction NNE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Apr 16, 1904 09:20 AM UTC

Seismic Origin Parameters

Event ID	nc75458907
Magnitude	4.0 MW
Origin Time (UTC)	Wed, 28 Oct 2026 12:01:11 GMT
Latitude	39.5005°
Longitude	-122.9518°
Hypocenter Depth	10.6 km
Review Status	REVIEWED
Significance Index	250 / 1000

Ground Motion & Felt Intensity

Max MMI Intensity	3.7 (IV)
Perceived Shaking	Light
Peak Ground Accel (PGA)	0.010 g
Peak Ground Vel (PGV)	0.6 cm/s
PSA (0.3 s)	0.028 g
PSA (1.0 s)	0.005 g
DYFI Felt Reports	6 responses
Community CDI	3.8

Focal Mechanism & Fault Geometry Unknown

Nodal Plane 1	Strike N/A° · Dip N/A° · Rake N/A°
Nodal Plane 2	Strike N/A° · Dip N/A° · Rake N/A°
Scalar Moment (M₀)	1.272E+15 N·m
Fault Kinematics	Unknown

Lower-Hemisphere Focal Projection

Seismic Network & Solution Quality

STATIONS USED

63

PHASES USED

54

AZIMUTHAL GAP

31°

DEPTH ERROR

± 0.7 km

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Data provided by the U.S. Geological Survey (USGS) Earthquake Hazards Program.

Official USGS Event Page (nc75458907)