Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 5:19:37 PM (PST) on Thursday, November 27, 2025.
The magnitude 1.9 event occurred 11 km (7 miles) SSW of Tamalpais-Homestead Valley, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.9 - duration magnitude (Md)
Time Thursday, November 27, 2025 at 5:19:37 PM (PST)
Friday, November 28, 2025 at 1:19:37 (UTC)
Distance from Tamalpais-Homestead Valley, CA - 11 km (7 miles) SSW (203 degrees)
Marin City, CA - 11 km (7 miles) SW (216 degrees)
Sausalito, CA - 12 km (7 miles) SW (228 degrees)
Mill Valley, CA - 14 km (8 miles) SSW (195 degrees)
Broadmoor, CA - 14 km (9 miles) NW (322 degrees)
Coordinates 37 deg. 47.3 min. N (37.788N), 122 deg. 35.0 min. W (122.584W)
Depth 9.17 km (5.70 miles)
Quality Good
Location Quality Parameters Nst=37, Nph=36, Dmin=6.4 km, Rmss=0.06 sec, Erho=0.21 km, Erzz=0.439999998 km, Gp=93 degrees
Event ID# nc75270701
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