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Light mag. 2.8 earthquake - 16 mi north of Ukiah, Mendocino County, California, USA, on Wednesday, May 5, 2021 at 13:06 GMT

Light magnitude 2.8 earthquake at 4 km depth

5 May 13:09 UTC: First to report: USGS after 3 minutes.
5 May 23:24: Magnitude recalculated from 2.9 to 2.8. Hypocenter depth recalculated from 0.6 to 4.3 km (from 0.4 to 2.7 mi).

Earthquake details

Date & time	May 5, 2021 13:06:28 UTC
Local time at epicenter
Status	Confirmed
Magnitude	2.8
Depth	4.3 km
Epicenter latitude / longitude	39.37633°N / 123.26167°W (Mendocino, California, United States)
Antipode	39.376°S / 56.738°E
Shaking intensity	Weak shaking
Felt	2 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (62 km / 39 mi)
Nearby towns and cities	9 km (6 mi) ESE of Little Lake (pop: 4,860) \| Show on map \| Quakes nearby 13 km (8 mi) NNW of Redwood Valley (pop: 1,730) \| Show on map \| Quakes nearby 26 km (16 mi) N of Ukiah (pop: 15,900) \| Show on map \| Quakes nearby 40 km (25 mi) SSE of Laytonville (pop: 1,230) \| Show on map \| Quakes nearby 45 km (28 mi) NW of Nice (pop: 2,730) \| Show on map \| Quakes nearby 47 km (29 mi) E of Fort Bragg (Mendocino County) (pop: 7,290) \| Show on map \| Quakes nearby 48 km (30 mi) NW of Lakeport (pop: 4,810) \| Show on map \| Quakes nearby 72 km (45 mi) NW of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 100 km (62 mi) NNW of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 177 km (110 mi) WNW of Sacramento (pop: 490,700) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1 x 10⁹ joules (278 kilowatt hours, equivalent to 0.239 tons of TNT) \| 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
2.8	4.3 km	9km ESE of Willits, CA, USA	USGS
2.9	1 km	NORTHERN CALIFORNIA, USA	EMSC

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User reports for this quake (2)

At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.

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

Translate

95490 / Light shaking (MMI IV) / single lateral shake / 2-5 s

simi valley / Very weak shaking (MMI II) / simple rolling (tilting sideways along one direction) / 5-10 s

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