Yesterday the U.S. Geological Survey (USGS) announced the release of new public web pages that show the probability of earthquake shaking in the next 24 hours in California. These maps graphically illustrate the change in earthquake probability during aftershock and possible foreshock sequences.
The maps are not intended to be used to predict an upcoming earthquake; however, based on previous earthquake sequences, an increase in probability will be seen before about half of California’s larger earthquakes. The maps are updated at least once an hour and are available to the public.
Read the complete story. (Government Technology)