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Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, 152 mi northwest of Eureka, Humboldt County, California, USA, on Tuesday, Aug 9, 2022 at 6:40 am (GMT -8) -

Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, 152 mi northwest of Eureka, Humboldt County, California, USA, on Tuesday, Aug 9, 2022 at 6:40 am (GMT -8) Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, 152 mi northwest of Eureka, Humboldt County, California, USA, on Tuesday, Aug 9, 2022 at 6:40 am (GMT -8)

Moderate magnitude 4.3 earthquake at 10 km depth

9 Aug 14:51 UTC: First to report: EMSC after 10 minutes.
9 Aug 14:51: Now using data updates from USGS
9 Aug 15:22: Magnitude recalculated from 3.2 to 4.3. Epicenter location corrected by 1.4 km (0.9 mi) towards W.
9 Aug 18:38: Epicenter location corrected by 1.8 km (1.1 mi) towards WSW.

Earthquake details

Date & timeAug 9, 2022 14:40:47 UTC -
Local time at epicenterTuesday, Aug 9, 2022 at 6:40 am (GMT -8)
Depth10.0 km
Epicenter latitude / longitude41.8714°N / 126.7177°W (North Pacific Ocean, Oregon, United States)
Antipode41.871°S / 53.282°E
Shaking intensityLight shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoJackson Ridge (41 km / 25 mi)
Nearby towns and cities199 km (123 mi) WSW of Ellensburg (pop: 2,280) | Show on map | Quakes nearby
241 km (150 mi) WNW of McKinleyville (Humboldt County, California) (pop: 15,200) | Show on map | Quakes nearby
244 km (152 mi) WNW of Eureka (Humboldt County, California) (pop: 27,000) | Show on map | Quakes nearby
247 km (153 mi) WNW of Arcata (Humboldt County, California) (pop: 17,800) | Show on map | Quakes nearby
249 km (155 mi) WNW of Bayside (Humboldt County, California) (pop: 17,100) | Show on map | Quakes nearby
264 km (164 mi) SW of Coos Bay (Coos County) (pop: 16,200) | Show on map | Quakes nearby
286 km (178 mi) WSW of Grants Pass (Josephine County) (pop: 37,100) | Show on map | Quakes nearby
314 km (195 mi) WSW of Roseburg (Douglas County) (pop: 22,100) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 16.3°C (61 F), humidity: 90%, wind: 1 m/s (3 kts) from NNE
Estimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | about seismic energy
Show interactive Map
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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.
4.310 km197 Km WSW of Pistol River, OregonUSGS
4.310 kmOff Coast of N. CaliforniaRaspberryShake


Seismic station: Corvallis, Oregon, USA (COR/IU network) | Distance from quake: 409 km / 254 mi | Show on map | Station Info
Seismic station Corvallis, Oregon, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
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Glorious Sprague River Oregon / not felt : Didnt feel it, but glad I don't live on the coast. This world is sinking. Jesus is THE life boat | One user found this interesting. (reported through our app)  
Corvallis / not felt (reported through our app)
Newport / not felt (reported through our app)

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