Need to use the map properly - it is only a rough estimate based upon raw statistics.
The map (http://earthquake.usgs.gov/earthquakes/step/) as I write is back to showing high probability of severe earthquakes for the Sierra MAdre mountains reachin gfomr abive Fresno up past Grass Valley (east of Sacramento. That was how it looked when I first posted teh link. Then the forecast area shrank back to what it was yesterdy and now it is large area again.