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Minor mag. 1.3 earthquake - 2km SSW of Anderson Springs, CA, on Friday, Mar 31, 2023 at 7:59 pm (GMT -7) -

Minor magnitude 1.3 earthquake at 0 km depth

1 Apr 03:01 UTC: First to report: USGS after 2 minutes.

Earthquake details

Date & time	Apr 1, 2023 02:59:11 UTC -
Local time at epicenter	Friday, Mar 31, 2023 at 7:59 pm (GMT -7)
Status	Confirmed
Magnitude	1.3
Depth	0.2 km
Epicenter latitude / longitude	38.75566°N / 122.69984°W (California, United States)
Antipode	38.756°S / 57.3°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (25 km / 16 mi)
Nearby towns and cities	7 km (5 mi) W of Middletown (pop: 1,320) \| Show on map \| Quakes nearby 8 km (5 mi) SSE of Cobb (pop: 1,780) \| Show on map \| Quakes nearby 22 km (14 mi) NE of Russian River (Sonoma County) (pop: 11,700) \| Show on map \| Quakes nearby 22 km (14 mi) NE of Russian River (pop: 11,700) \| Show on map \| Quakes nearby 23 km (15 mi) SSW of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 25 km (16 mi) NNE of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 35 km (22 mi) N of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 46 km (29 mi) N of Rohnert Park (pop: 42,400) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Overcast Clouds 4°C (39 F), humidity: 75%, wind: 1 m/s (3 kts) from WSW
Estimated seismic energy released	5.6 x 10⁶ joules (1.56 kilowatt hours) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
1.3	0.2 km	2km SSW of Anderson Springs, CA	USGS
1.3	10 km	Northern California	IRIS
1.3	0.2 km	Northern California	RaspberryShake

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User reports for this quake

At magnitude 1.3, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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