2023-05-21 18:44:01 UPDATED: (M5.5) off the coast of Northern California 40.4 -125.5 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

M5.5 Earthquake - off the coast of Northern California

Preliminary Report

Magnitude	5.5
Date-Time	Universal Time (UTC): 21 May 2023 18:44:01 Time near the Epicenter (1): 21 May 2023 11:44:01 Time in your area (1): 21 May 2023 10:44:01
Location	40.406N 125.487W
Depth	2 km
Distances	105.4 km (65.4 mi) W of Ferndale, California 114.7 km (71.1 mi) W of Fortuna, California 120.3 km (74.6 mi) WSW of Eureka, California 129.3 km (80.2 mi) WSW of Arcata, California 398.7 km (247.2 mi) WNW of Sacramento, California
Location Uncertainty	Horizontal: 2.0 km; Vertical 43.8 km
Parameters	Nph = 195; Dmin = 97.9 km; Rmss = 0.53 seconds; Gp = 238° Version = 2
Event ID	nc 73890906 ***This event supersedes event EW1684694660.

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
CISN Northern California Management Center
U.S. Geological Survey
Berkeley Seismological Laboratory
http://www.cisn.org/ncmc.html

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