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A moderate earthquake awakened many in Southern California. The temblor had a preliminary magnitude of 5.4 and shook a wide portion of Southern California and was felt from downtown Los Angeles east to Riverside.

The quake was centered about 4 miles north of Big Bear City and 28 miles from San Bernardino.

Several aftershocks occurred immediately after. A magnitude-4.5 followed one minute later and another measuring 4.2 one minute after that.

There have been no reports of injuries or damage.

== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California

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

A moderate earthquake occurred at 12:19:10 (UTC) - Coordinated Universal Time on Saturday, February 22, 2003. The magnitude 5.4 event occurred 5 km (3 miles) N of Big Bear City, CA. The hypocentral depth was 3 km ( 2 miles).

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Magnitude	5.4 - local magnitude (Ml)
Time	Saturday, February 22, 2003 at 12:19:10 (UTC) - Coordinated Universal Time Saturday, February 22, 2003 at 8:19:10 AM (AST) - Atlantic Saturday, February 22, 2003 at 7:19:10 AM (EST) - Eastern Saturday, February 22, 2003 at 6:19:10 AM (CST) - Central Saturday, February 22, 2003 at 5:19:10 AM (MST) - Mountain Saturday, February 22, 2003 at 4:19:10 AM (PST) - Pacific Saturday, February 22, 2003 at 3:19:10 AM (AKST) - Alaska Saturday, February 22, 2003 at 2:19:10 AM (HST) - Hawaii
Distance from	Big Bear City, CA - 5 km (3 miles) N (357 degrees) Big Bear Lake, CA - 9 km (6 miles) NNE (33 degrees) Running Springs, CA - 27 km (17 miles) ENE (64 degrees) Yucaipa, CA - 36 km (23 miles) NNE (31 degrees) San Bernardino, CA - 46 km (28 miles) ENE (64 degrees)
Coordinates	34 deg. 18.7 min. N (34.311N) 116 deg. 50.9 min. W (116.848W)
Depth	2.6 km (1.6 miles)
Location Quality	Fair
Location Quality Parameters	Nst=043, Nph=043, Dmin=4 km, Rmss=0.3 sec, Erho=0.4 km, Erzz=0.8 km, Gp=57.6 degrees
Event ID#	ci13935988

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