Mag. 4.3 earthquake - 5.9 mi north of Redwood Valley, Mendocino County, California, USA, on 2019-04-28 23:16:08 -08:00

Mag. 4.3 earthquake  - 5.9 mi north of Redwood Valley, Mendocino County, California, USA, on 2019-04-28 23:16:08 -08:00

Light magnitude 4.3 earthquake at 3 km depth

29 Apr 07:19 UTC: First to report: USGS after 3 minutes.
Hypocenter depth recalculated from 20.0 to 4.0 km.
Apr 29 07:37: Magnitude recalculated from 4.2 to 4.3.
Hypocenter depth recalculated from 4.0 to 3.1 km.
Date & time: 29 Apr 2019 07:16:08 UTC
Local time at epicenter: 2019-04-28 23:16:08 -08:00
Magnitude: 4.3
Depth: 3.1 km
Epicenter latitude / longitude: 39.34767°N / 123.23517°W (Mendocino County, California, United States)
Nearest volcano: Clear Lake (58 km / 36 mi)
Nearby towns and cities:
10 km (6 mi) NNW of Redwood Valley (pop: 1,730) --> See nearby quakes!
11 km (7 mi) WNW of Potter Valley (pop: 646) --> See nearby quakes!
12 km (8 mi) ESE of Willits (pop: 4,860) --> See nearby quakes!
22 km (14 mi) N of Ukiah (pop: 15,900) --> See nearby quakes!
42 km (26 mi) NW of Nice (pop: 2,730) --> See nearby quakes!
44 km (27 mi) NW of Tuckertown (pop: 4,810) --> See nearby quakes!
50 km (31 mi) ESE of Fort Bragg (Mendocino County) (pop: 7,290) --> See nearby quakes!
68 km (42 mi) NW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
3942 km (2450 mi) WNW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
3942 km (2450 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 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.
MagnitudeDepthLocationSource
M 4.33.1 km10km NNW of Redwood Valley, CA (USA)USGS
M 4.24 kmNorthern California (USA)EMSC

User reports for this quake (27)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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95427 / Light shaking (MMI IV) : I was reading in bed , Heard a loud boom followed perhape 1 or 2 seconds later by mild shaking. About 20 miles west of Redwood Valley 95427
willits, ca pine mountain / Moderate shaking (MMI V) : Woke me up, felt movement then a sharp jolt. Lamp on dresser shook.
redwood valley / Moderate shaking (MMI V)
23325 live Oak rd / Moderate shaking (MMI V)
Willits / Moderate shaking (MMI V)
Upper lake, ca. / Strong shaking (MMI VI) : Woke me up, my bird went crazy . It was moderate but didn't last long just long enough to wake me and check on my Parrott. Short time frame
Debbie Gregg Redwood Valley. / Strong shaking (MMI VI) : It shook my awake in my RV. Felt like someone was at the SE corner trying to knock it over.
ukiah / Weak shaking (MMI III)
Redwood Valley, ca / Moderate shaking (MMI V) : No damage noted but it shook hard and it seemed like there was almost a deep rumbling noise or popping sound with it
Douglas City California / not felt : When I woke up at 4 in the morning actually 5 I have a bed on Wheels and it was moving and I thought there was an earthquake 91 miles away from me
Redwood Valley / Moderate shaking (MMI V) : Definitely like riding a wave.
Chico (118.2 km ENE of epicenter) [Map] / Light shaking (MMI IV) : I was getting my coffee like I always do at four am before work then soon I felt shaking
Calpella Ca / Moderate shaking (MMI V)
Hanford ca. (459.5 km SE of epicenter) [Map] / not felt (reported through our app)
UKIAH / Weak shaking (MMI III) : Less than a minute, mild rolling and swaying sensation of the house. Ceiling fixture swung. Nothing fell over, no breakage.
Willits ca locust st / Strong shaking (MMI VI) : This was a sharp hard jolt I was at door of apartment and tossed me towards the door. Usually we feel light jolts here but this one was very hard and violet but was over quickly.
Mendocino, CA (49.9 km W of epicenter) [Map] / Light shaking (MMI IV) : Laying in bed at my hotel, sounded at first like the people above dropped something heavy, but then the floors and walls shook a little, and I realized it was an earthquake. Only a few seconds.
Fort Bragg, California / Light shaking (MMI IV)
Willits,Ca / Moderate shaking (MMI V)
Calpella CA (16.6 km SSE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Ukiah ca / Light shaking (MMI IV) : It started with my 3 cats freaking out and jumping up and running around.. them 4sec later the whole Apt started to shake and kept shaking for over a min then some mini after shocks... Then we all felt kinda dizzy and off balance for a few mins... Nothing broken just yet but I haven't look everywhere yet....
Gurley Lane, Mendocino,CA / Moderate shaking (MMI V)
Willits, CA / Light shaking (MMI IV) : Sharp jolt, but very brief in duration
Ukiah (22.7 km SSE of epicenter) [Map] / Moderate shaking (MMI V)
San Francisco (United States of America, 188 km S of epicenter) : I felt nothing here in San Francisco, neither did my wife (reported through EMSC)
Ukiah (United States of America, 22 km S of epicenter) : Brief (reported through EMSC)
Redwood Valley (United States of America, 13 km S of epicenter) : Was a pretty good shake. Freaked out my dogs...took a few minutes for them to calm down... (reported through EMSC)
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Mag. 4.3 earthquake - 5.9 mi north of Redwood Valley, Mendocino County, California, USA, on 2019-04-28 23:16:08 -08:00
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