Light mag. 3.8 earthquake - 40 mi southwest of Eureka, Humboldt County, California, USA, on Thursday, Jun 9, 2022 at 3:26 pm (GMT -7) -

Light mag. 3.8 earthquake - 40 mi southwest of Eureka, Humboldt County, California, USA, on Thursday, Jun 9, 2022 at 3:26 pm (GMT -7) Light mag. 3.8 earthquake - 40 mi southwest of Eureka, Humboldt County, California, USA, on Thursday, Jun 9, 2022 at 3:26 pm (GMT -7)

Light magnitude 3.8 earthquake at 20 km depth

9 Jun 22:29 UTC: First to report: VolcanoDiscovery after 3 minutes.
9 Jun 22:30: Now using data updates from USGS
... [show all] ...
9 Jun 23:22: Magnitude recalculated from 3.9 to 3.8.
Update Thu, 9 Jun 2022, 22:36
Small tremor of magnitude 3.9 just reported 40 miles southwest of Eureka, California, United States
3.9 quake 9 Jun 3:26 pm (GMT -7)
3.9 quake 9 Jun 3:26 pm (GMT -7)
A magnitude 3.9 earthquake near Eureka, Humboldt County, California, USA, was reported only 9 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a shallow depth of 12 miles beneath the epicenter early afternoon on Thursday, June 9th, 2022, at 3:26 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the citizen-seismograph network of RaspberryShake, which listed it as a magnitude 3.9 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.9.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ferndale (pop. 1,400) located 24 miles from the epicenter, Rio Dell (pop. 3,400) 26 miles away, Hydesville (pop. 1,200) 28 miles away, Fortuna (pop. 12,000) 28 miles away, Humboldt Hill (pop. 3,400) 34 miles away, Eureka (pop. 27,000) 40 miles away, Bayside (pop. 17,100) 45 miles away, Arcata (pop. 17,800) 46 miles away, and McKinleyville (pop. 15,200) 50 miles away.
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Earthquake data

Earthquake details

Date & timeJun 9, 2022 22:26:59 UTC -
Local time at epicenterThursday, Jun 9, 2022 at 3:26 pm (GMT -7)
StatusConfirmed
Magnitude3.8
Depth20.2 km
Epicenter latitude / longitude40.2915°N / 124.51883°W (Humboldt, California, United States)
Antipode40.292°S / 55.481°E
Shaking intensityVery weak shaking
Felt4 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoClear Lake (210 km / 130 mi)
Nearby towns and cities38 km (24 mi) SW of Ferndale (pop: 1,370) | Show on map | Quakes nearby
42 km (26 mi) SW of Rio Dell (pop: 3,390) | Show on map | Quakes nearby
46 km (28 mi) SW of Fortuna (Humboldt County) (pop: 12,000) | Show on map | Quakes nearby
64 km (40 mi) SSW of Eureka (Humboldt County) (pop: 27,000) | Show on map | Quakes nearby
72 km (45 mi) SSW of Bayside (Humboldt County) (pop: 17,100) | Show on map | Quakes nearby
74 km (46 mi) SSW of Arcata (Humboldt County) (pop: 17,800) | Show on map | Quakes nearby
81 km (50 mi) SSW of McKinleyville (Humboldt County) (pop: 15,200) | Show on map | Quakes nearby
322 km (200 mi) NW of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 22.7°C (73 F), humidity: 76%, wind: 5 m/s (10 kts) from NNW
Estimated seismic energy released3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 tons of TNT) | about seismic energy
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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
3.820 km20km W of Petrolia, CAUSGS
3.410 kmOFFSHORE NORTHERN CALIFORNIAEMSC
3.820 kmNear Coast of N. CaliforniaRaspberryShake

User reports for this quake (6)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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scotia (41.1 km ENE of epicenter) [Map] / Light shaking (MMI IV) : very short, light, only shook my house a little, freaked out the animals | 4 users found this interesting.  
Sitting reading / not felt : First heard something and then a jolt. Very quick. Even woke up my puppy | 3 users found this interesting.  
Fortuna California / Very weak shaking (MMI II) / 1-2 s : Very minor creaks in house or rattling of windows,..just barely | One user found this interesting.  
Fortuna, CA 2nd Story building / Very weak shaking (MMI II) / rattling, vibrating / very short : Brief rattling of windows  
Fortuna, CA 2nd Story building / Very weak shaking (MMI II) / rattling, vibrating / very short : Brief rattling of windows  
McKinleyville / not felt : 50 miles north, nothing. Usually have felt 3.8, but this was deeper than usual.  
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