Instructions Click on an earthquake or fault for more information. To see the name of a fault, move your mouse over the fault. Maps are updated within 5 minutes of an earthquake and once an hour. Try to reload this page if you do not have the most current map. Click on an arrow at the edge or corner of above map to go to an adjacent map.

Options and other maps List of earthquakes on this map List of earthquakes PLUS map Alphabetical index of CA-NV faults Map showing recency of fault movement in CA Faster loading map without topography and fault names Remove earthquakes from this map Did you feel it? Report an Earthquake ShakeMaps Southern CA || Northern CA

Information Red lines are known faults (orange lines are unnamed faults). Thin grey lines are roads. Magnitude = ? for new earthquakes until a magnitude is determined (takes 4-5 minutes). Earthquakes can appear near a fault without having occurred on that fault. To associate an earthquake with a fault requires viewing both of them in three-dimensions. About Real-time Earthquake Maps Frequently Asked Questions, Data Sources, Credits and Disclaimer, Glossary, Other Sites that Host these Maps.