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== PRELIMINARY EARTHQUAKE REPORT ==

Seismological Laboratory, University of Nevada, Reno



Version #703310: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 8:12:33 PM (PDT) on Monday, September 9, 2019.
The magnitude 0.2 event occurred 38 km (24 miles) SSW of Portola, CA.
The hypocentral depth is 0.0 km (0.0 miles).



Magnitude 0.2 - local magnitude (Ml)
Time Monday, September 9, 2019 at 8:12:33 PM (PDT)
Tuesday, September 10, 2019 at 3:12:33 (UTC)
Distance from Portola, CA - 38 km (24 miles) SSW (212 degrees)
Nevada City, CA - 39 km (25 miles) NE (43 degrees)
Grass Valley, CA - 45 km (28 miles) NE (42 degrees)
Challenge-Brownsville, CA - 48 km (30 miles) E (82 degrees)
East Quincy, CA - 49 km (30 miles) SSE (160 degrees)
Coordinates 39 deg. 31.4 min. N (39.523N), 120 deg. 42.3 min. W (120.705W)
Depth 0.0 km (0.0 miles)
Quality Fair
Location Quality Parameters Nst=3, Nph=5, Dmin=38.1 km, Rmss=0.1772 sec, Erho=0 km, Erzz=0.0 km, Gp=198.0 degrees
Event ID# nn00703310
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