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Minor mag. 1.1 earthquake - 13km ENE of Cloverdale, CA, on Friday, Mar 31, 2023 at 11:20 pm (GMT -7) -

Minor magnitude 1.1 earthquake at 2 km depth

1 Apr 06:22 UTC: First to report: USGS after 2 minutes.

Earthquake details

Date & time	Apr 1, 2023 06:20:57 UTC -
Local time at epicenter	Friday, Mar 31, 2023 at 11:20 pm (GMT -7)
Status	Confirmed
Magnitude	1.1
Depth	2.2 km
Epicenter latitude / longitude	38.84267°N / 122.87883°W (California, United States)
Antipode	38.843°S / 57.121°E
Shaking intensity	Very weak shaking
Felt	1 report
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (17 km / 11 mi)
Nearby towns and cities	13 km (8 mi) ENE of Cloverdale (Sonoma County) (pop: 8,810) \| Show on map \| Quakes nearby 25 km (16 mi) WSW of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 33 km (21 mi) N of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 44 km (28 mi) SE of Ukiah (pop: 15,900) \| Show on map \| Quakes nearby 47 km (29 mi) NNW of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 71 km (44 mi) NNW of Petaluma (pop: 60,400) \| Show on map \| Quakes nearby 80 km (49 mi) NW of Napa (pop: 80,400) \| Show on map \| Quakes nearby 98 km (61 mi) NW of Fairfield (pop: 113,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 2.7°C (37 F), humidity: 86%, wind: 1 m/s (2 kts) from NW
Estimated seismic energy released	2.8 x 10⁶ joules (0.783 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
1.1	2.2 km	13km ENE of Cloverdale, CA	USGS
1.1	2.2 km	Northern California	RaspberryShake
1.1	10 km	Northern California	IRIS

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User reports for this quake (1)

At magnitude 1.1, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

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Caspar, California / Very weak shaking (MMI II) / very short : Light movement, as if someone was shaking my bed.

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