Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

Seismological Laboratory, University of Nevada, Reno


Version #906185: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 8:47:14 AM (PDT) on Tuesday, October 21, 2025.
The magnitude 1.7 event occurred 32 km (20 miles) SSW of Alamo, NV.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 1.7 - local magnitude (Ml)
Time Tuesday, October 21, 2025 at 8:47:14 AM (PDT)
Tuesday, October 21, 2025 at 15:47:14 (UTC)
Distance from Alamo, NV - 32 km (20 miles) SSW (205 degrees)
Caliente, NV - 91 km (56 miles) SW (232 degrees)
Nellis Air Force Base, NV - 98 km (61 miles) NNW (347 degrees)
North Las Vegas, NV - 99 km (61 miles) N (351 degrees)
Las Vegas, NV - 102 km (63 miles) N (355 degrees)
Coordinates 37 deg. 6.3 min. N (37.106N), 115 deg. 19.0 min. W (115.316W)
Depth 3.96 km (2.50 miles)
Quality Fair
Location Quality Parameters Nst=15, Nph=23, Dmin=40.8 km, Rmss=0.1912 sec, Erho=0 km, Erzz=22.901 km, Gp=133 degrees
Event ID# nn00906185
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