Moderate mag. 4.3 earthquake - North Pacific Ocean, 61 mi southwest of Eureka, Humboldt County, California, USA, on Tuesday, 12 Jan 2021 5:22 am (GMT -8) -

Moderate mag. 4.3 earthquake - North Pacific Ocean, 61 mi southwest of Eureka, Humboldt County, California, USA, on Tuesday, 12 Jan 2021 5:22 am (GMT -8)

Moderate magnitude 4.3 earthquake at 4 km depth

12 Jan 13:26 UTC: First to report: USGS after 4 minutes.
12 Jan 13:28: Magnitude recalculated from 4.5 to 4.4.
12 Jan 18:42: Hypocenter depth recalculated from 2.2 to 3.5 km (from 1.4 to 2.2 mi). Epicenter location corrected by 25 km (15 mi) towards E.
12 Jan 19:46: Magnitude recalculated from 4.4 to 4.3.
Date & time: 12 Jan 2021 13:22:06 UTC -
Local time at epicenter: Tuesday, 12 Jan 2021 5:22 am (GMT -8)
Magnitude: 4.3
Depth: 3.5 km
Epicenter latitude / longitude: 40.3945°N / 125.1895°W (North Pacific Ocean, California, United States)
Nearest volcano: Escanaba Segment (181 km / 112 mi)
Nearby towns and cities:
81 km (50 mi) WSW of Ferndale (pop: 1,370) --> See nearby quakes!
90 km (56 mi) WSW of Fortuna (Humboldt County) (pop: 12,000) --> See nearby quakes!
98 km (61 mi) WSW of Eureka (Humboldt County) (pop: 27,000) --> See nearby quakes!
107 km (67 mi) WSW of Arcata (Humboldt County) (pop: 17,800) --> See nearby quakes!
107 km (67 mi) WSW of Bayside (Humboldt County) (pop: 17,100) --> See nearby quakes!
110 km (69 mi) SW of McKinleyville (Humboldt County) (pop: 15,200) --> See nearby quakes!
238 km (148 mi) W of Redding (pop: 91,600) --> See nearby quakes!
289 km (180 mi) SW of Medford (Oregon) (pop: 79,800) --> See nearby quakes!
304 km (189 mi) NW of Santa Rosa (pop: 175,000) --> See nearby quakes!
383 km (238 mi) NW of Concord (pop: 128,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Moderate Rain 13.2°C (56 F), humidity: 95%, wind: 15 m/s (30 kts) from S
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 4.33.5 km77km W of Petrolia, CA, USAUSGS
M 4.410 kmOFFSHORE NORTHERN CALIFORNIA, USAEMSC
M 4.510 kmOff Coast of N. California, USAGFZ

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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4071.3 km ENE of epicenter [Map] / not felt / very short : I'm in Washington DC, no earthquake here, Washington dc is on the east coast. | One user found this interesting.
98.3 km ENE of epicenter [Map] / not felt (reported through our app)
418 km NNE of epicenter [Map] / not felt (reported through our app)
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