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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 11:16:24 AM (PST) on Thursday, December 6, 2018.
The magnitude 1.1 event occurred 3 km (2 miles) SSW of Broadmoor, CA.
The hypocentral depth is 9 km ( 5 miles).



Magnitude 1.1 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 11:16:24 AM (PST)
Thursday, December 6, 2018 at 19:16:24 (UTC)
Distance from Broadmoor, CA - 3 km (2 miles) SSW (210 degrees)
Colma, CA - 3 km (2 miles) WSW (252 degrees)
Daly City, CA - 4 km (2 miles) SW (226 degrees)
Pacifica, CA - 6 km (4 miles) N (351 degrees)
South San Francisco, CA - 8 km (5 miles) W (280 degrees)
Coordinates 37 deg. 40.0 min. N (37.667N), 122 deg. 29.8 min. W (122.497W)
Depth 8.59 km (5.3 miles)
Quality Good
Location Quality Parameters Nst=19, Nph=22, Dmin=1.8 km, Rmss=0.07 sec, Erho=0.36 km, Erzz=0.34 km, Gp=159 degrees
Event ID# nc73119656
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