Weak mag. 3.0 earthquake - North Pacific Ocean, 44 mi west of Eureka, Humboldt County, California, USA, on Monday, 1 Mar 2021 8:36 am (GMT -8) -
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Weak magnitude 3.0 earthquake at 25 km depth
1 Mar 16:38 UTC: First to report: USGS after 2 minutes.
1 Mar 23:04: Magnitude recalculated from 3.2 to 3.0. Hypocenter depth recalculated from 20.4 to 24.8 km (from 12.7 to 15.4 mi). Epicenter location corrected by 26 km (16 mi) towards E.
1 Mar 23:04: Magnitude recalculated from 3.2 to 3.0. Hypocenter depth recalculated from 20.4 to 24.8 km (from 12.7 to 15.4 mi). Epicenter location corrected by 26 km (16 mi) towards E.
Date & time: 1 Mar 2021 16:36:31 UTC -
Local time at epicenter: Monday, 1 Mar 2021 8:36 am (GMT -8)
Magnitude: 3
Depth: 24.8 km
Epicenter latitude / longitude: 40.58917°N / 124.95383°W

Nearest volcano: Escanaba Segment (194 km / 121 mi)
Nearby towns and cities:
58 km (36 mi) W of Ferndale (pop: 1,370) --> See nearby quakes!
67 km (42 mi) W of Fortuna (Humboldt County) (pop: 12,000) --> See nearby quakes!
71 km (44 mi) WSW of Eureka (Humboldt County) (pop: 27,000) --> See nearby quakes!
72 km (45 mi) W of Rio Dell (pop: 3,390) --> See nearby quakes!
80 km (49 mi) WSW of Arcata (Humboldt County) (pop: 17,800) --> See nearby quakes!
80 km (50 mi) WSW of Bayside (Humboldt County) (pop: 17,100) --> See nearby quakes!
82 km (51 mi) WSW of McKinleyville (Humboldt County) (pop: 15,200) --> See nearby quakes!
88 km (55 mi) SW of Westhaven-Moonstone (pop: 1,210) --> See nearby quakes!
216 km (134 mi) W of Redding (pop: 91,600) --> See nearby quakes!
307 km (191 mi) NW of Santa Rosa (pop: 175,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds
9.9°C (50 F), humidity: 84%, wind: 5 m/s (10 kts) from SE
Primary data source: USGS (United States Geological Survey)Broken Clouds

Estimated released energy: 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
3.0 | 25 km | 58km W of Ferndale, CA, USA | USGS |
2.9 | 10 km | OFFSHORE NORTHERN CALIFORNIA, USA | EMSC |
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