Re: First hit on Don's Advisory Md 2.1 near Livermore CA
Posted by Lowell on April 21, 2002 at 17:59:00:

Todd,
The names of the towns do not matter in the forecast - it is the forecast epicenter
which is checked, and in this case a near exact match occurred. And, yes, earthquakes
of Ml>=2 are not uncommon in the area. In the last year there have been 12 earthquakes
of Ml>=2 within 10 km of today's epicenter. That means that 12 5-day periods have
contained such an event in the past year. Odd of choosing such a period by random
are about 1 chance in 6.
As I understood Don's explanation, each event listed in his advisory is a possible
event. The radius is 35 km and time +/- 2 days of the date given. So each can be
treated as a separate forecast.