Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted. For more information, please see www.doi.gov/shutdown
Can some people sense that an earthquake is about to happen (earthquake sensitives)?
There is no scientific explanation for the symptoms some people claim to have preceding an earthquake, and more often than not there is no earthquake following the symptoms.
Why are we having so many earthquakes? Has naturally occurring earthquake activity been increasing? Does this mean a big one is going to hit? OR We haven't had any earthquakes in a long time; does this mean that the pressure is building up for a big one?
ShakeAlert: The Path to West Coast Earthquake Early Warning: How a Few Seconds Can Save Lives and Property — Public Lecture
News reporters are invited to attend an illustrated public lecture to learn how U.S. Geological Survey scientists and partners are developing ShakeAlert. The ShakeAlert earthquake early warning system will begin limited operations this year. Alerts could save lives and properties but several challenges remain. With millions at risk, why isn't full public alerting happening yet?
New Audiences, New Products for the National Seismic Hazard Maps
Friday's magnitude-5.2 earthquake in southern Illinois is a reminder that earthquakes are a national hazard.
A ShakeMap portraying the variations in shaking intensity from the Nov. 3, 2002, 7.9-magnitude earthquake was released today by the U.S. Geological Survey and the University of Alaska, Fairbanks.
Title: ShakeAlert: The Path to West Coast Earthquake Early Warning ... how a few seconds can save lives and property
- The ShakeAlert earthquake early warning system will begin limited operations this year.
- Alerts could save lives and properties but several challenges remain.
- With millions at risk, why isn't full public alerting happening yet?
USGS map showing (1) the locations of major populations and (2) the intensity of potential earthquake ground shaking that has a 2% chance of occurring in 50 years.
A map of ShakeOut scenario shaking in southern California.
Ground view of collapsed building and burned area at Beach and Divisadero Streets, Marina District, San Francisco, following the October 17, 1989 Loma Prieta earthquake. At 5:04:15 p.m. (PDT), the magnitude 6.9 (moment magnitude; surface-wave magnitude, 7.1) earthquake severely shook the San Francisco and Monterey Bay regions. The epicenter was located at 37.04° N....
Aerial view of slide at Daly City. This is the largest slide triggered by the earthquake in San Mateo County, displacing approximately 36,700 cubic meters (48,000 cubic yards) of material. The base is about 152 m (500 ft) across at its widest point.