Tuesday, June 15, 2004


I was sitting at the computer at 3:30 PM PDT and suddenly the house moved. I was on a chair with casters and it felt like the floor moved about an inch or so under the chair, in a north-south direction. There was no rolling motion, and it was over in a couple seconds. The house creaked a bit, and the ceiling lights swayed, but other than that it was no big deal. No report of tsunami.

After about 10 minutes the USGS California Earthquake site posted report that the epicenter of a 4.3 event was near Edwards AFB. About 10 minutes after that, the Mojave location disappeared and the map showed a 5.1 event in the ocean about 45 miles off Rosarita Beach in Baja. Then they modified the report again and it is now described as a 5.2 magnitude event about 10 miles north of the first ocean location. It was interesting to see how the reporting of the quake evolved as (presumably) more information became available.

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