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== PRELIMINARY EARTHQUAKE REPORT ==

Seismological Laboratory, University of Nevada, Reno



Version #717075: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 3:31:57 AM (PST) on Thursday, February 13, 2020.
The magnitude 0.6 event occurred 34 km (21 miles) SSW of Portola, CA.
The hypocentral depth is 9 km ( 6 miles).



Magnitude 0.6 - local magnitude (Ml)
Time Thursday, February 13, 2020 at 3:31:57 AM (PST)
Thursday, February 13, 2020 at 11:31:57 (UTC)
Distance from Portola, CA - 34 km (21 miles) SSW (201 degrees)
Truckee, CA - 43 km (27 miles) WNW (301 degrees)
Nevada City, CA - 46 km (28 miles) NE (50 degrees)
Grass Valley, CA - 51 km (32 miles) NE (48 degrees)
East Quincy, CA - 51 km (32 miles) SSE (151 degrees)
Coordinates 39 deg. 31.6 min. N (39.527N), 120 deg. 36.7 min. W (120.611W)
Depth 9.2 km (5.7 miles)
Quality Fair
Location Quality Parameters Nst=11, Nph=18, Dmin=28.0 km, Rmss=0.1929 sec, Erho=0 km, Erzz=6.5 km, Gp=117.04 degrees
Event ID# nn00717075
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