Posted by Lowell on December 03, 2001 at 16:56:55:
Hey Don, I was wondering why you were waiting to post that prediction (Don often passes his forecasts by me a little before posting them for any thoughts I might have) for Yountville. Seemed to me like you were shaving it a bit thin. So you posted it at 13:47 PST (21:47 UT) today. It's a good thing too, because NCSN is now listing the following earthquake this afternoon: O: 03DEC2001 23:05:33 38.3N 122.4W MD=2.8 NCSN 5 km SW of Napa, CA Source: http://quake.wr.usgs.gov/cgi-bin/quake/quake.geo.berkeley.edu/name=quake That less than 15 km from your predicted epicenter and less than an hour and a half after you posted the forecast - can't shave it much closer than that. Those fine frog hairs of yours must be a'tingling. Don's forecast had been: P: 05-09DEC 40 km 38.4N 122.4W ML 2.5-3.5 Yountville, California The forecast is within 15 km of this afternoon's earthquake and the magnitude of this event falls in the middle of the given magnitude range. The event occurs two days early from the stated expected window, however. So, Don are you still expecting another in the time window?
Probability: NEIS lists 6 days on which events of Ml 2.5-3.5 have occurred in the past two years (Since Dec. 2, 1999) within 40 km of the predicted epicenter. For a 5-day window, the probability of a "successful" forecast is 6/122 = 0.05 or odds of about 1 in 20 for success. For a 7-day forecast window (which would include today's event, these odds are about 1 in 17 for a successful forecast. Beat the odds again Don, congrats, and next time try to give a bit more warning!! Don's Original Forecast had read (Post #11511 above Dec 3, 2001) Yountville, California Earthquake Forecast Posted by Don In Hollister on December 03, 2001 at 13:47:32: Magnitude: 2.5-3.5Ml From: 12/05/2001 - To: 12/09/2001 Location: Yountville, California Lat: 38.4N - Long: 122.4W - Range: 40Km Hi All. Looks like it\222s going to be a long day. Looking for 2.5 to 3.5 at 38.4N/122.4W. This is about 5 Km west of Yountville, California. Should occur on 12/07/2001. The window will open on 12/05/2001 and will close on 12/09/2001. The radius on this is 40Km. Take Care...Don in creepy town .
Follow Ups:
● Re: More notice next time, please, Don :-) - Petra Challus 17:52:22 - 12/3/2001 (11522) (1)
● Re: More notice next time, please, Don :-) - Don In Hollister 18:03:46 - 12/3/2001 (11527) (0)
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