Moderate mag. 4.2 earthquake - 6.8 mi southeast of Willits, Mendocino County, California, on Wednesday, August 19, 2020 at 00:55 (GMT) -

Moderate mag. 4.2 earthquake - 6.8 mi southeast of Willits, Mendocino County, California, on Wednesday, August 19, 2020 at 00:55 (GMT)

Moderate magnitude 4.2 earthquake at 8 km depth

19 Aug 00:56 UTC: First to report: USGS after 58 seconds.
Aug 19 00:59: Magnitude recalculated from 4.3 to 4.0.
Hypocenter depth recalculated from 8.0 to 7.5 km.
Aug 19 03:32: Magnitude recalculated from 4.0 to 4.6.
Date & time: Aug 19, 2020 00:55:23 UTC -
Magnitude: 4.2
Depth: 8.2 km
Epicenter latitude / longitude: 39.3605°N / 123.24583°W (Mendocino, California, United States)
Antipode: 39.361°S / 56.754°E
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!
42 km (26 mi) NW of North Lakeport (pop: 3,310) --> See nearby quakes!
43 km (27 mi) NW of Nice (pop: 2,730) --> 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!
174 km (108 mi) WNW of Sacramento (pop: 490,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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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.DepthLocationSource
4.28.2 km11km ESE of Willits, CA (USA)USGS
4.68 kmNorthern California (USA)EMSC

User reports for this quake (15)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Willits, CA (10.5 km WNW of epicenter) [Map] / Moderate shaking (MMI V) : First earthquake had us shaking a little bit for a few seconds; the first aftershock was a little mellower, but the second aftershock was stronger than the original earthquake and lasted seconds longer. | One user found this interesting.  
Lakeport, California (43.6 km SE of epicenter) [Map] / Light shaking (MMI IV) : It was sharp and rumbling for an extended period of time. I thought it was over and it kept going. Felt vertigo | One user found this interesting.  
Fort Bragg, Mendocino, California (45.4 km W of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
2700 Road I Redwood Valley, ca (10.1 km SSE of epicenter) [Map] / Moderate shaking (MMI V)
Willits / Light shaking (MMI IV) : I was setting in my chair reading. The jolt felt like a truck had hit the house. The shaking then diminished somewhat and continued for about 15-20 seconds. The two aftershocks were just jolts and didn't last more than a few seconds.  
Howard Hospital Willits CA / Light shaking (MMI IV) : I heard a slight rumbling and there was a slight shaking, but then the rumbling and shaking intensified.  
Lodi / not felt
coeur d alene idaho / Light shaking (MMI IV) : woke us up out of bed  
Anaheim / Light shaking (MMI IV)
Willits ca / Severe shaking (MMI VIII)
Willits ca / Weak shaking (MMI III) : I was just sitting down and felt 4 Aftershocks  
Willits, CA / Light shaking (MMI IV)
Brook trails ca / Light shaking (MMI IV)
Willits / Weak shaking (MMI III)
Potter Valley / Light shaking (MMI IV)
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