earthquake!!

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

A light earthquake occurred at 9:00:15 PM (PDT) on Friday, September 5, 2008.
The magnitude 4.0 event occurred 3 km (2 miles) ENE of Alamo, CA.
The hypocentral depth is 16 km (10 miles).

---

Magnitude	4.0 - regional moment magnitude (Mw)
Time	Friday, September 5, 2008 at 9:00:15 PM (PDT) Saturday, September 6, 2008 at 4:00:15 (UTC)
Distance from	Alamo, CA - 3 km (2 miles) ENE (77 degrees) Diablo, CA - 5 km (3 miles) NW (315 degrees) Danville, CA - 6 km (4 miles) NNW (343 degrees) Concord, CA - 11 km (7 miles) S (172 degrees) Oakland, CA - 22 km (14 miles) ENE (69 degrees)
Coordinates	37 deg. 51.9 min. N (37.866N), 121 deg. 59.7 min. W (121.996W)
Depth	16.2 km (10.1 miles)
Location Quality	Excellent