2023-09-30 16:36:45 (M3.7) OFFSHORE NORTHERN CALIFORNIA 40.4 -125.4 (90be5)

M3.7 Earthquake - OFFSHORE NORTHERN CALIFORNIA

Preliminary Report

Magnitude	3.7
Date-Time	Universal Time (UTC): 30 Sep 2023 16:36:45 Time near the Epicenter (1): 30 Sep 2023 09:36:45 Time in your area (1): 30 Sep 2023 08:36:45
Location	40.428N 125.440W
Depth	2 km
Distances	99 km (61 miles) W (277 degrees) of Petrolia, CA 101 km (63 miles) W (261 degrees) of Ferndale, CA 110 km (68 miles) WSW (252 degrees) of Humboldt Hill, CA 115 km (72 miles) WSW (250 degrees) of Eureka, CA 394 km (245 miles) NW (319 degrees) of San Francisco City Hall, CA
Location Uncertainty	Horizontal: 3.1 km; Vertical 33.8 km
Parameters	Nph = 56; Dmin = 94.6 km; Rmss = 0.40 seconds; Gp = 251° Version = 2
Event ID	nc 73943841

(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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