Recent Earthquakes in the Intermountain West - Clickable map with recent earthquakes, location and magnitude, with special reports for Utah and Yellowstone National Park. - http://www.seis.utah.edu/recenteqs/
Recent Earthquakes in California and Nevada - An interactive map with reports on recent earthquakes, including epicenter location, depth and magnitude. - http://www.data.scec.org/recenteqs/Maps/119-38.html
Pacific Northwest Seismic Network (PNSN) - Clickable map of recent earthquakes, with magnitude and location info. Includes special reports on Mount St. Helens and the Seattle region. - http://www.pnsn.org/
US Geological Survey - Recent Earthquakes in Hawaii - Browse a list of the recent earthquakes occurred in Hawaii. Contains the magnitude, date, epicentral localization, maps, and wave forms. - http://tux.wr.usgs.gov/
Earthquakes in Wyoming - Online database of earthquakes in Wyoming allows for searching by date and from map display of quake epicenters. Damaging earthquakes can occur anywhere in the state -- the largest magnitudes are in western Wyoming and the Yellowstone area. - http://www.wrds.uwyo.edu/wrds/wsgs/hazards/quakes/quake.html