I talked about Earthquake Weather (EW) before, although we didn't get an earthquake that time, and my post turned into commentary about the job I don't have anymore. The earthquake discussion is at the beginning of the post.
So, we've been having EW again: cold nights and hot days, the kind of temperature shifts that make the earth contract and expand.
I went to bed later than usual, at 2:30am, and around 9:30am I woke up and then started falling back to sleep. Just as I fell asleep, I felt the bed move as though somebody had given the mattress a light push. It moved a tiny bit to the side and back, and my mind started telling me it was just one of those moments of disequilibrium that I didn't need to worry about, when I felt the covers settle down around my legs more.
I was awake. I classified it as an earthquake about a 3.2 magnitude at my house--just strong enough to feel it but not strong enough to even move the miniblinds.
Caltech takes about 10 - 20 minutes to report an earthquake on its website, so my first attempt to see if I had just experienced an earthquake and not a figment of my imagination told me that there was a 4.1 earthquake 10 miles north of the observatory on Mt. Palomar at about 4:30am. The epicenter is about 35 - 40 miles from me, if the crow flies high enough to avoid the mountains. I slept through that one.
A little later, an aftershock showed up for 9:41:36 AM PST. Jackpot!
I'm not sure how long the link will be good, since it's in the "recent earthquakes" section of their site, so here's their summary:
== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #C: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 9:41:36 AM (PST) on Monday, November 17, 2008.
The magnitude 3.8 event occurred 16 km (10 miles) N of Palomar Observatory, CA.
The hypocentral depth is 10 km ( 6 miles).
So, that was my morning. I hope you had a good one too!