Light mag. 3.3 earthquake - 15 miles N of Ukiah, California, on Tuesday, 3 Nov 2020 9:41 am (GMT -8) -
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| California
Light magnitude 3.3 earthquake at 7 km depth
3 Nov 17:44 UTC: First to report: USGS after 3 minutes.
3 Nov 18:46: Magnitude recalculated from 3.5 to 3.3.
3 Nov 20:46: Hypocenter depth recalculated from 5.9 to 7.0 km (from 3.7 to 4.3 mi).
3 Nov 18:46: Magnitude recalculated from 3.5 to 3.3.
3 Nov 20:46: Hypocenter depth recalculated from 5.9 to 7.0 km (from 3.7 to 4.3 mi).
Update Tue, 3 Nov 2020, 17:45
Small 3.5 quake hits near Ukiah, California3.5 quake 11km ESE of Willits, CA, USA, 3 Nov 9.41 am (GMT -8)
Just 4 minutes ago, a 3.5-magnitude earthquake struck near the town of Willits, California. The tremor was recorded in the morning on Tuesday 3 November 2020 at 9.41 am local time, at a very shallow depth of 3.7 miles below the surface.
The event was filed by the United States Geological Survey (USGS), the first seismological agency to report it.
Our monitoring service at VolcanoDiscovery identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.5 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter. Weak shaking might have been felt in Willits (pop. 4,900) located 7 miles from the epicenter, Redwood Valley (pop. 1,700) 7 miles away, Potter Valley (pop. 600) 8 miles away, Brooktrails (pop. 3,200) 9 miles away, Calpella (pop. 700) 10 miles away, and Ukiah (pop. 15,900) 15 miles away.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Cloverdale (pop. 8,800) located 41 miles from the epicenter, and Clearlake (pop. 15,200) 44 miles away.
The event was filed by the United States Geological Survey (USGS), the first seismological agency to report it.
Our monitoring service at VolcanoDiscovery identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.5 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter. Weak shaking might have been felt in Willits (pop. 4,900) located 7 miles from the epicenter, Redwood Valley (pop. 1,700) 7 miles away, Potter Valley (pop. 600) 8 miles away, Brooktrails (pop. 3,200) 9 miles away, Calpella (pop. 700) 10 miles away, and Ukiah (pop. 15,900) 15 miles away.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Cloverdale (pop. 8,800) located 41 miles from the epicenter, and Clearlake (pop. 15,200) 44 miles away.
Earthquake data:
Date & time: 3 Nov 2020 17:41:19 UTC -
Local time at epicenter: Tuesday, 3 Nov 2020 9:41 am (GMT -8)
Magnitude: 3.3
Depth: 7.0 km
Epicenter latitude / longitude: 39.367°N / 123.24483°W
(Mendocino, California, 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!
12 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!
37 km (23 mi) NW of Upper Lake (pop: 1,050) --> See nearby quakes!
46 km (28 mi) NW of Tuckertown (pop: 4,810) --> See nearby quakes!
49 km (30 mi) E of Fort Bragg (Mendocino County) (pop: 7,290) --> See nearby quakes!
70 km (44 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!
113 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
17.6°C (64 F), humidity: 50%, wind: 0 m/s (0 kts) from N
Primary data source: USGS (United States Geological Survey)Clear Sky
17.6°C (64 F), humidity: 50%, wind: 0 m/s (0 kts) from NEstimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 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.
| Magnitude | Depth | Location | Source |
| 3.3 | 7 km | 11km ESE of Willits, CA, USA | USGS |
| 2.7 | 10 km | NORTHERN CALIFORNIA, USA | EMSC |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Lakeport, CA / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : This time my cats ran into the bedroom and 12 seconds later, a shaking like a semi-truck was crossing the overpass above. I rolled onto the floor face down and covered the back of my head. I was whimpering, gritting my teeth and perhaps crying just, a little. My wife was standing over me and she reached down and grabbed me by both nose holes with her ring and pinky fingers jammed in across my face, while she held the back of my head with the other hand and pulled me up to my knees. Once I was ha | 6 users found this interesting.
Lakeport, CA / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Oh, my sweet lord! I am still trying to calm down. | 4 users found this interesting.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!
