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Minor mag. 1.0 earthquake - 7km W of Cobb, CA, on Saturday, Apr 1, 2023 at 12:50 am (GMT -7) -

Minor magnitude 1.0 earthquake at 2 km depth

1 Apr 07:52 UTC: First to report: USGS after 2 minutes.

Earthquake details

Date & time	Apr 1, 2023 07:50:14 UTC -
Local time at epicenter	Saturday, Apr 1, 2023 at 12:50 am (GMT -7)
Status	Confirmed
Magnitude	1
Depth	1.7 km
Epicenter latitude / longitude	38.83083°N / 122.80367°W (California, United States)
Antipode	38.831°S / 57.196°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (16 km / 10 mi)
Nearby towns and cities	7 km (4 mi) W of Cobb (pop: 1,780) \| Show on map \| Quakes nearby 21 km (13 mi) SW of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 32 km (20 mi) N of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 44 km (27 mi) N of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 68 km (42 mi) NNW of Petaluma (pop: 60,400) \| Show on map \| Quakes nearby 75 km (46 mi) NW of Napa (pop: 80,400) \| Show on map \| Quakes nearby 88 km (55 mi) NW of Vacaville (pop: 96,800) \| Show on map \| Quakes nearby 93 km (58 mi) NW of Fairfield (pop: 113,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 0.7°C (33 F), humidity: 87%, wind: 1 m/s (3 kts) from NW
Estimated seismic energy released	2 x 10⁶ joules (0.554 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
1.0	1.7 km	7km W of Cobb, CA	USGS
1.0	1.7 km	Northern California	RaspberryShake
1.0	10 km	Northern California	IRIS

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User reports for this quake

At magnitude 1.0, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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