Minor mag. 1.6 earthquake - 9km WSW of Rio Dell, CA, USA, on Wednesday, 3 Mar 2021 1:42 pm (GMT -8) -
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Minor magnitude 1.6 earthquake at 22 km depth
3 Mar 21:44 UTC: First to report: USGS after 2 minutes.
4 Mar 03:52: Magnitude recalculated from 1.4 to 1.6. Hypocenter depth recalculated from 17.6 to 21.7 km (from 10.9 to 13.5 mi). Epicenter location corrected by 4.5 km (2.8 mi) towards SSE.
4 Mar 03:52: Magnitude recalculated from 1.4 to 1.6. Hypocenter depth recalculated from 17.6 to 21.7 km (from 10.9 to 13.5 mi). Epicenter location corrected by 4.5 km (2.8 mi) towards SSE.
Date & time: 3 Mar 2021 21:42:59 UTC -
Local time at epicenter: Wednesday, 3 Mar 2021 1:42 pm (GMT -8)
Magnitude: 1.6
Depth: 21.7 km
Epicenter latitude / longitude: 40.475°N / 124.20633°W
(California, United States)Nearest volcano: Mount Shasta (197 km / 122 mi)
Nearby towns and cities:
9 km (6 mi) WSW of Rio Dell (pop: 3,390) --> See nearby quakes!
14 km (9 mi) SSW of Fortuna (Humboldt County) (pop: 12,000) --> See nearby quakes!
37 km (23 mi) S of Eureka (Humboldt County) (pop: 27,000) --> See nearby quakes!
43 km (26 mi) SSW of Bayside (Humboldt County) (pop: 17,100) --> See nearby quakes!
45 km (28 mi) SSW of Arcata (Humboldt County) (pop: 17,800) --> See nearby quakes!
51 km (32 mi) NW of Redway (pop: 1,230) --> See nearby quakes!
53 km (33 mi) S of McKinleyville (Humboldt County) (pop: 15,200) --> See nearby quakes!
71 km (44 mi) SW of Willow Creek (pop: 1,710) --> See nearby quakes!
87 km (54 mi) W of Hayfork (pop: 2,370) --> See nearby quakes!
154 km (96 mi) W of Redding (pop: 91,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
11.8°C (53 F), humidity: 72%, wind: 1 m/s (3 kts) from N
Primary data source: USGS (United States Geological Survey)Scattered Clouds
11.8°C (53 F), humidity: 72%, wind: 1 m/s (3 kts) from NEstimated released energy: 1.6 x 107 joules (4.4 kilowatt hours) 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 |
| 1.6 | 22 km | 9km WSW of Rio Dell, CA, USA | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 1.6, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.
