Light mag. 3.0 earthquake - 15 mi north of Ukiah, Mendocino County, California, USA, on Sunday, 7 Mar 2021 8:03 am (GMT -8) -
Light magnitude 3.0 earthquake at 6 km depth
7 Mar 16:06 UTC: First to report: USGS after 2 minutes.
Update Sun, 7 Mar 2021, 16:12Small magnitude 3.0 earthquake 15 miles north of Ukiah, California, United States
3.0 quake 7 Mar 8:03 am (GMT -8)
Just 8 minutes ago, a 3.0-magnitude earthquake struck near Ukiah, Mendocino County, California, USA. The tremor was recorded in the morning on Sunday 7 March 2021 at 8:03 am local time, at a very shallow depth of 3.5 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.0 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Willits (pop. 4,900) located 7 miles from the epicenter, Redwood Valley (pop. 1,700) 7 miles away, Brooktrails (pop. 3,200) 9 miles away, Ukiah (pop. 15,900) 15 miles away, and Talmage (pop. 1,100) 16 miles away. In Upper Lake (pop. 1,100, 23 miles away), and Clearlake (pop. 15,200, 43 miles away), the quake was probably not felt.
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Date & time: 7 Mar 2021 16:03:42 UTC -
Local time at epicenter:
Sunday, 7 Mar 2021 8:03 am (GMT -8)
Depth: 5.6 km
Epicenter latitude / longitude: 39.35933°N / 123.25117°W
, United States
Nearest volcano: Clear Lake
(60 km / 37 mi)
Nearby towns and cities:11 km (7 mi) ESE of Willits
(pop: 4,860) --> See nearby quakes!11 km (7 mi) NNW of Redwood Valley
(pop: 1,730) --> See nearby quakes!24 km (15 mi) N of Ukiah
(pop: 15,900) --> See nearby quakes!36 km (23 mi) NW of Upper Lake
(pop: 1,050) --> See nearby quakes!46 km (28 mi) NW of Lakeport
(pop: 4,810) --> See nearby quakes!49 km (30 mi) E of Fort Bragg (Mendocino County)
(pop: 7,290) --> See nearby quakes!70 km (43 mi) NW of Clearlake (Lake County)
(pop: 15,200) --> See nearby quakes!98 km (61 mi) NNW of Windsor (Sonoma County)
(pop: 27,500) --> See nearby quakes!112 km (70 mi) NNW of Santa Rosa
(pop: 175,000) --> See nearby quakes!175 km (109 mi) WNW of Sacramento
(pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 2.7°C
(37 F), humidity: 87%, wind: 1 m/s (2 kts) from N
Primary data source: USGS
(United States Geological Survey)
Estimated released energy: 2 x 109
joules (554 kilowatt hours, equivalent to 0.477 tons of TNT) More info
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.
|3.0||5.6 km||11km ESE of Willits, CA, USA||USGS|
|2.6||5 km||NORTHERN CALIFORNIA, USA||EMSC|
User reports for this quake (2)
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Deeth NV / not felt : I did not feel it. But I seem to be affected by the subsonic frequencies associated with earthquakes. I use RedVox and record using the public rather than private to allow access to the apps recorded readings. I hope that it helps.
Willits, CA / Light shaking (MMI IV) / single vertical bump / very short : Felt like something really heavy hit the building. | One user found this interesting.
Earlier earthquakes in the same area since 1900
Map of earlier quakes