USGS Earthquake Hazards Program

M 6.6 - 26 km NNW of Lahad Datu, Malaysia

iscgem911497 · REVIEWED · Sat, 11 Aug 1923 00:54:43 GMT · 5.2520° N, 118.2600° E

Magnitude

6.5

MW Scale

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P

PAGER Loss Impact

NO PAGER ALERT

VII

Maximum Shaking (MMI)

6.7 - Very Strong

T

Tsunami Bulletin

No Tsunami Threat Warning

Esri Satellite Map & ShakeMap Visualizations

ShakeMap Intensity Heat Overlay Opacity:

70%

⏱️ 7-Day Aftershock Sequence +0.0 hrs

1x Speed 3x Speed 8x Speed

Mainshock +7 Days

Press Play or drag slider to reveal aftershocks on map Total 23 Aftershocks (M3.8+)

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: 5.2520° N, 118.2600° E · Depth: 35.0 km

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

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🏛️ 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
7.1	Feb 22, 2026 04:57 PM	57 km NNW of Kota Belud, Malaysia	629.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.8541°, 116.2942° Spatial Relative Telemetry M 7.1 Distance to Epicenter 281 km (175 mi) Direction NW Focal Depth 629.0 km (390.8 mi) Origin Timestamp Feb 22, 2026 04:57 PM UTC
6.2	Jul 26, 1976 02:56 AM	7 km SSW of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9560°, 118.3080° Spatial Relative Telemetry M 6.2 Distance to Epicenter 33 km (21 mi) Direction S Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 02:56 AM UTC
6.2	Sep 15, 1932 11:13 AM	23 km W of Bawison, Philippines	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.9470°, 120.6580° Spatial Relative Telemetry M 6.2 Distance to Epicenter 276 km (171 mi) Direction ENE Focal Depth 15.0 km (9.3 mi) Origin Timestamp Sep 15, 1932 11:13 AM UTC
6.1	Dec 20, 2015 06:47 PM	37 km N of Tarakan, Indonesia	14.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 3.6455°, 117.6359° Spatial Relative Telemetry M 6.1 Distance to Epicenter 192 km (119 mi) Direction SSW Focal Depth 14.0 km (8.7 mi) Origin Timestamp Dec 20, 2015 06:47 PM UTC
6.1	Mar 6, 1995 06:43 PM	98 km SE of Tarakan, Indonesia	16.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 2.6900°, 118.2260° Spatial Relative Telemetry M 6.1 Distance to Epicenter 285 km (177 mi) Direction S Focal Depth 16.7 km (10.4 mi) Origin Timestamp Mar 6, 1995 06:43 PM UTC
6.1	Jun 2, 1951 06:47 AM	10 km W of Kudat, Malaysia	15.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.8780°, 116.7270° Spatial Relative Telemetry M 6.1 Distance to Epicenter 248 km (154 mi) Direction NW Focal Depth 15.0 km (9.3 mi) Origin Timestamp Jun 2, 1951 06:47 AM UTC
6.0	Jun 4, 2015 11:15 PM	14 km WNW of Ranau, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.9867°, 116.5409° Spatial Relative Telemetry M 6.0 Distance to Epicenter 207 km (129 mi) Direction WNW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jun 4, 2015 11:15 PM UTC
5.7	Feb 25, 2015 01:31 AM	81 km WSW of Pandan Niog, Philippines	9.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.0816°, 119.8398° Spatial Relative Telemetry M 5.7 Distance to Epicenter 198 km (123 mi) Direction ENE Focal Depth 9.0 km (5.6 mi) Origin Timestamp Feb 25, 2015 01:31 AM UTC
5.7	Nov 2, 1994 01:43 AM	35 km ENE of Lahad Datu, Malaysia	55.2 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.0990°, 118.6430° Spatial Relative Telemetry M 5.7 Distance to Epicenter 46 km (29 mi) Direction ESE Focal Depth 55.2 km (34.3 mi) Origin Timestamp Nov 2, 1994 01:43 AM UTC
5.7	Mar 14, 1984 12:39 AM	20 km NNE of Lahad Datu, Malaysia	50.3 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.2030°, 118.3870° Spatial Relative Telemetry M 5.7 Distance to Epicenter 15 km (9 mi) Direction ESE Focal Depth 50.3 km (31.3 mi) Origin Timestamp Mar 14, 1984 12:39 AM UTC
5.5	Apr 2, 2023 07:32 PM	56 km NNW of Kota Kinabalu, Malaysia	618.7 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.4308°, 115.8339° Spatial Relative Telemetry M 5.5 Distance to Epicenter 299 km (186 mi) Direction WNW Focal Depth 618.7 km (384.4 mi) Origin Timestamp Apr 2, 2023 07:32 PM UTC
5.5	Jan 19, 2015 05:19 PM	23 km SSW of Manuk Mangkaw, Philippines	11.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.6079°, 119.7571° Spatial Relative Telemetry M 5.5 Distance to Epicenter 181 km (112 mi) Direction ESE Focal Depth 11.0 km (6.8 mi) Origin Timestamp Jan 19, 2015 05:19 PM UTC
5.5	Nov 27, 1994 06:27 PM	92 km NNW of Sanga-Sanga, Philippines	27.3 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.7680°, 119.3240° Spatial Relative Telemetry M 5.5 Distance to Epicenter 131 km (81 mi) Direction ENE Focal Depth 27.3 km (17.0 mi) Origin Timestamp Nov 27, 1994 06:27 PM UTC
5.4	Dec 25, 1981 12:28 AM	33 km SSE of Lahad Datu, Malaysia	39.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.7600°, 118.4770° Spatial Relative Telemetry M 5.4 Distance to Epicenter 60 km (37 mi) Direction SSE Focal Depth 39.1 km (24.3 mi) Origin Timestamp Dec 25, 1981 12:28 AM UTC
5.4	Apr 28, 1973 08:39 PM	66 km NW of Taman Rajawali, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.3860°, 117.7040° Spatial Relative Telemetry M 5.4 Distance to Epicenter 140 km (87 mi) Direction NNW Focal Depth 33.0 km (20.5 mi) Origin Timestamp Apr 28, 1973 08:39 PM UTC
5.3	May 23, 2005 07:58 PM	54 km NW of Taman Rajawali, Malaysia	19.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.2560°, 117.7090° Spatial Relative Telemetry M 5.3 Distance to Epicenter 127 km (79 mi) Direction NNW Focal Depth 19.0 km (11.8 mi) Origin Timestamp May 23, 2005 07:58 PM UTC
5.3	Jul 26, 1976 08:49 AM	14 km S of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.8940°, 118.3420° Spatial Relative Telemetry M 5.3 Distance to Epicenter 41 km (25 mi) Direction SSE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 08:49 AM UTC
5.3	Jul 26, 1976 08:36 AM	33 km WSW of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9040°, 118.0520° Spatial Relative Telemetry M 5.3 Distance to Epicenter 45 km (28 mi) Direction SSW Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 08:36 AM UTC
5.3	Jul 26, 1976 03:03 AM	7 km NE of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.0620°, 118.3850° Spatial Relative Telemetry M 5.3 Distance to Epicenter 25 km (16 mi) Direction SSE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 03:03 AM UTC
5.3	Jul 25, 1976 02:03 PM	8 km NNW of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.0920°, 118.2870° Spatial Relative Telemetry M 5.3 Distance to Epicenter 18 km (11 mi) Direction S Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 25, 1976 02:03 PM UTC
5.2	Oct 23, 2007 08:34 PM	87 km NW of Sanga-Sanga, Philippines	48.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.7100°, 119.3160° Spatial Relative Telemetry M 5.2 Distance to Epicenter 127 km (79 mi) Direction ENE Focal Depth 48.8 km (30.3 mi) Origin Timestamp Oct 23, 2007 08:34 PM UTC
5.2	Dec 14, 1988 05:06 PM	25 km SW of Taman Rajawali, Malaysia	79.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.7530°, 117.8590° Spatial Relative Telemetry M 5.2 Distance to Epicenter 71 km (44 mi) Direction NW Focal Depth 79.4 km (49.3 mi) Origin Timestamp Dec 14, 1988 05:06 PM UTC
5.2	Jul 26, 1976 05:35 AM	29 km E of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9860°, 118.5940° Spatial Relative Telemetry M 5.2 Distance to Epicenter 47 km (29 mi) Direction SE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 05:35 AM UTC
5.1	Oct 23, 1980 02:00 PM	63 km NW of Taganak, Philippines	51.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.5190°, 117.9570° Spatial Relative Telemetry M 5.1 Distance to Epicenter 145 km (90 mi) Direction NNW Focal Depth 51.0 km (31.7 mi) Origin Timestamp Oct 23, 1980 02:00 PM UTC
5.1	Aug 14, 1976 11:10 AM	33 km NW of Semporna, Malaysia	36.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.7140°, 118.4210° Spatial Relative Telemetry M 5.1 Distance to Epicenter 62 km (39 mi) Direction SSE Focal Depth 36.0 km (22.4 mi) Origin Timestamp Aug 14, 1976 11:10 AM UTC
5.1	Jul 26, 1976 09:43 AM	24 km E of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9940°, 118.5500° Spatial Relative Telemetry M 5.1 Distance to Epicenter 43 km (27 mi) Direction SE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 09:43 AM UTC
5.0	May 18, 2008 06:26 AM	50 km NE of Tawau, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.5980°, 118.1730° Spatial Relative Telemetry M 5.0 Distance to Epicenter 73 km (45 mi) Direction S Focal Depth 10.0 km (6.2 mi) Origin Timestamp May 18, 2008 06:26 AM UTC
5.0	Sep 18, 1976 07:54 AM	46 km NNE of Tawau, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.6390°, 118.0330° Spatial Relative Telemetry M 5.0 Distance to Epicenter 73 km (45 mi) Direction SSW Focal Depth 33.0 km (20.5 mi) Origin Timestamp Sep 18, 1976 07:54 AM UTC
4.6	Mar 26, 2017 09:30 AM	50 km E of Lahad Datu, Malaysia	34.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9334°, 118.7791° Spatial Relative Telemetry M 4.6 Distance to Epicenter 68 km (42 mi) Direction ESE Focal Depth 34.0 km (21.1 mi) Origin Timestamp Mar 26, 2017 09:30 AM UTC
4.6	May 28, 2012 04:44 PM	26 km S of Lahad Datu, Malaysia	39.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.7860°, 118.3210° Spatial Relative Telemetry M 4.6 Distance to Epicenter 52 km (32 mi) Direction S Focal Depth 39.5 km (24.5 mi) Origin Timestamp May 28, 2012 04:44 PM UTC
4.6	Jul 4, 1992 10:33 PM	14 km ESE of Lahad Datu, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9760°, 118.4540° Spatial Relative Telemetry M 4.6 Distance to Epicenter 37 km (23 mi) Direction SE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jul 4, 1992 10:33 PM UTC
4.5	Apr 9, 2008 12:51 AM	40 km NNE of Semporna, Malaysia	27.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.8380°, 118.7130° Spatial Relative Telemetry M 4.5 Distance to Epicenter 68 km (42 mi) Direction SE Focal Depth 27.8 km (17.3 mi) Origin Timestamp Apr 9, 2008 12:51 AM UTC
4.5	Sep 28, 2006 03:11 PM	73 km WNW of Taman Rajawali, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.0410°, 117.3980° Spatial Relative Telemetry M 4.5 Distance to Epicenter 130 km (81 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Sep 28, 2006 03:11 PM UTC
4.5	Aug 25, 1991 07:15 AM	42 km WNW of Semporna, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.6360°, 118.2560° Spatial Relative Telemetry M 4.5 Distance to Epicenter 68 km (42 mi) Direction S Focal Depth 33.0 km (20.5 mi) Origin Timestamp Aug 25, 1991 07:15 AM UTC
4.5	May 24, 1984 02:56 PM	41 km S of Semporna, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.1080°, 118.6000° Spatial Relative Telemetry M 4.5 Distance to Epicenter 133 km (83 mi) Direction SSE Focal Depth 33.0 km (20.5 mi) Origin Timestamp May 24, 1984 02:56 PM UTC
4.5	Nov 26, 1982 07:29 PM	15 km SSE of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.8950°, 118.3870° Spatial Relative Telemetry M 4.5 Distance to Epicenter 42 km (26 mi) Direction SSE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Nov 26, 1982 07:29 PM UTC
4.5	Jul 26, 1976 01:12 PM	48 km NE of Tawau, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.5920°, 118.1600° Spatial Relative Telemetry M 4.5 Distance to Epicenter 74 km (46 mi) Direction S Focal Depth 33.0 km (20.5 mi) Origin Timestamp Jul 26, 1976 01:12 PM UTC
4.4	Dec 6, 1996 12:42 PM	33 km ESE of Lahad Datu, Malaysia	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.8940°, 118.6050° Spatial Relative Telemetry M 4.4 Distance to Epicenter 55 km (34 mi) Direction SE Focal Depth 33.0 km (20.5 mi) Origin Timestamp Dec 6, 1996 12:42 PM UTC
4.4	Feb 7, 1996 10:42 PM	24 km NW of Sanga-Sanga, Philippines	33.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.2080°, 119.6090° Spatial Relative Telemetry M 4.4 Distance to Epicenter 149 km (93 mi) Direction E Focal Depth 33.0 km (20.5 mi) Origin Timestamp Feb 7, 1996 10:42 PM UTC
4.4	Feb 13, 1989 08:24 PM	5 km WNW of Tawau, Malaysia	32.5 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.2650°, 117.8430° Spatial Relative Telemetry M 4.4 Distance to Epicenter 119 km (74 mi) Direction SSW Focal Depth 32.5 km (20.2 mi) Origin Timestamp Feb 13, 1989 08:24 PM UTC
4.3	Jan 5, 2018 12:40 AM	36 km W of Taman Rajawali, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.9504°, 117.7198° Spatial Relative Telemetry M 4.3 Distance to Epicenter 98 km (61 mi) Direction NW Focal Depth 10.0 km (6.2 mi) Origin Timestamp Jan 5, 2018 12:40 AM UTC
4.3	Sep 5, 2014 01:15 AM	34 km WNW of Semporna, Malaysia	12.4 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.6396°, 118.3414° Spatial Relative Telemetry M 4.3 Distance to Epicenter 69 km (43 mi) Direction S Focal Depth 12.4 km (7.7 mi) Origin Timestamp Sep 5, 2014 01:15 AM UTC
4.3	Jul 4, 1992 06:19 PM	40 km NNE of Tawau, Malaysia	50.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.5790°, 118.0490° Spatial Relative Telemetry M 4.3 Distance to Epicenter 78 km (48 mi) Direction SSW Focal Depth 50.0 km (31.1 mi) Origin Timestamp Jul 4, 1992 06:19 PM UTC
4.2	Apr 14, 2020 08:04 PM	36 km ESE of Lahad Datu, Malaysia	10.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9074°, 118.6333° Spatial Relative Telemetry M 4.2 Distance to Epicenter 56 km (35 mi) Direction SE Focal Depth 10.0 km (6.2 mi) Origin Timestamp Apr 14, 2020 08:04 PM UTC
4.2	Aug 21, 2010 07:43 PM	38 km N of Lahad Datu, Malaysia	54.1 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.3700°, 118.3680° Spatial Relative Telemetry M 4.2 Distance to Epicenter 18 km (11 mi) Direction NE Focal Depth 54.1 km (33.6 mi) Origin Timestamp Aug 21, 2010 07:43 PM UTC
4.1	Mar 4, 2016 12:43 AM	16 km SE of Lahad Datu, Malaysia	35.0 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 4.9182°, 118.4359° Spatial Relative Telemetry M 4.1 Distance to Epicenter 42 km (26 mi) Direction SSE Focal Depth 35.0 km (21.7 mi) Origin Timestamp Mar 4, 2016 12:43 AM UTC
4.1	Mar 19, 2015 09:56 PM	64 km ESE of Sandakan, Malaysia	50.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 5.5346°, 118.6135° Spatial Relative Telemetry M 4.1 Distance to Epicenter 50 km (31 mi) Direction NE Focal Depth 50.8 km (31.6 mi) Origin Timestamp Mar 19, 2015 09:56 PM UTC
4.0	Apr 22, 2006 02:01 AM	36 km NW of Taman Rajawali, Malaysia	70.8 km
🔴 Mainshock  ·  🔵 Past Quake  ·  ┄ Vector 6.1210°, 117.8100° Spatial Relative Telemetry M 4.0 Distance to Epicenter 109 km (68 mi) Direction NNW Focal Depth 70.8 km (44.0 mi) Origin Timestamp Apr 22, 2006 02:01 AM UTC

Seismic Origin Parameters

Event ID	iscgem911497
Magnitude	6.5 MW
Origin Time (UTC)	Sat, 11 Aug 1923 00:54:43 GMT
Latitude	5.2520°
Longitude	118.2600°
Hypocenter Depth	35.0 km
Review Status	REVIEWED
Significance Index	660 / 1000

Ground Motion & Felt Intensity

Max MMI Intensity	6.7 (VII)
Perceived Shaking	Very Strong
Peak Ground Accel (PGA)	0.252 g
Peak Ground Vel (PGV)	2.6 cm/s
PSA (0.3 s)	0.347 g
PSA (1.0 s)	0.145 g
DYFI Felt Reports	None reported
Community CDI	N/A

Seismic Network & Solution Quality

STATIONS USED

N/A

PHASES USED

N/A

AZIMUTHAL GAP

N/A

DEPTH ERROR

N/A

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

Official USGS Event Page (iscgem911497)