A moderate earthquake occurred at 11:42:15 AM (PDT) on Tuesday, July 29, 2008.The magnitude 5.4 event occurred 4 km (3 miles) WSW of Chino Hills, CA.The hypocentral depth is 14 km ( 8 miles).
Magnitude
5.4 - moment magnitude (Mw)
Time
Tuesday, July 29, 2008 at 11:42:15 AM (PDT)Tuesday, July 29, 2008 at 18:42:15 (UTC)
Distance from
Chino Hills, CA - 4 km (3 miles) WSW (240 degrees)Diamond Bar, CA - 7 km (5 miles) SE (135 degrees)Yorba Linda, CA - 8 km (5 miles) NNE (16 degrees)Pomona, CA - 12 km (7 miles) S (184 degrees)Los Angeles Civic Center, CA - 46 km (28 miles) ESE (104 degrees)
Coordinates
33 deg. 57.3 min. N (33.955N), 117 deg. 45.9 min. W (117.765W)
Depth
13.6 km (8.5 miles)
This was not fun. It shook quite a bit for a good 10 seconds at least. It was initially posted as a 5.8 event and then adjusted down to the 5.4 above. As we are on the 3rd floor of an office building in Monterey Park, we got quite a bit of movement. If it had gone on any longer the ceiling tiles would have popped out and the windows might have broken - we are so lucky it didn't! I should have gotten under my desk as per instructions in our recent office earthquake preparedness seminar, but I was worried I wouldn't be able to get up again! So, I rode my office chair (the kind with wheels) around the office for a while, watching the drawers of the credenza open and shut and the door move back and forth on its hinges. It took me a while to stop my hands from trembling afterwards!
I'm always very glad when an earthquake is over. Phew! Made it through another one. Not as bad as Northridge or Whittier Narrows, but bad enough.
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