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== 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 2:40:34 PM (PDT) on Monday, September 9, 2019.
The magnitude 1.1 event occurred 4 km (3 miles) SE of The Geysers, CA.
The hypocentral depth is 1 km (0.5 miles).



Magnitude 1.1 - duration magnitude (Md)
Time Monday, September 9, 2019 at 2:40:34 PM (PDT)
Monday, September 9, 2019 at 21:40:34 (UTC)
Distance from The Geysers, CA - 4 km (3 miles) SE (131 degrees)
Cobb, CA - 8 km (5 miles) S (179 degrees)
Middletown, CA - 9 km (6 miles) W (271 degrees)
Hidden Valley Lake, CA - 15 km (10 miles) WSW (247 degrees)
Lower Lake, CA - 20 km (12 miles) SSW (209 degrees)
Coordinates 38 deg. 45.2 min. N (38.754N), 122 deg. 43.2 min. W (122.721W)
Depth 0.83 km (0.5 miles)
Quality Excellent
Location Quality Parameters Nst=12, Nph=12, Dmin=2.5 km, Rmss=0.06 sec, Erho=0.24 km, Erzz=0.7 km, Gp=68 degrees
Event ID# nc73268260
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