Images

Screenshot of the Aftershock Forecast for an earthquake in California, with the “Summary” tab selected, scrolled to the bottom of the page. The mainshock is shown with a yellow star on top of its circle; other earthquakes in the forecasting region are also shown colored by time of occurrence.

Aftershock Forecast Model parameters screenshot of the Aftershock Forecast Overview page

Screenshot of the Aftershock Forecast for an earthquake in California, with the “Forecast Table” tab selected.

Two example aftershock sequences, from southern California, that illustrate the three general rules of aftershocks. A circle shows each aftershock's time of occurrence (horizontal axis) and magnitude (vertical axis). The larger-magnitude M6.7 Northridge earthquake is followed by many more aftershocks than the smaller M5.1 La Habra earthquake.

Screenshot of the Aftershock Forecast for an earthquake in California, with the “Summary” tab selected, and “M4+” and “Show All” selections for magnitude and forecast duration.
 

Screenshot of the Aftershock Forecast for an earthquake in California, with the “Commentary” tab selected.

Screenshot of the Overview webpage for an earthquake in California. The “Aftershock Forecast” card is at lower center.

Screenshot of the Aftershock Forecast for an earthquake in California, with the “Summary” tab selected, and “Show All” and “1 Month” selections for magnitude and forecast duration.

Ven diagram of risk as the intersection of hazards and society. This illustrates the logical relationships between two or more sets of items. 

NATIONAL LANDSLIDE SUSCEPTIBILITY MAP

POSTFIRE DEBRIS FLOW SCIENCE

The U.S. Geological Survey helps local, state, and federal agencies assess debris flow hazards in recently burned areas. We provide information about the likelihood of debris flow activity, where they might happen, and how big they might be.

DEBRIS FLOW ASSESSMENTS

LANDSLIDE SAFETY

If your home or property was damaged by a landslide from Hurricane Helene, be aware of the warning signs of future landslide activity

WATCH FOR WARNING SIGNS

Signs a landslide may be moving include:

Volcanoes tend to have seismicity that waxes and wanes over time. That’s considered normal and not necessarily a cause for concern. Let’s check on Mount Adams to see what USGS scientists are doing to learn more about its recent earthquake activity and what it could mean for this Cascade Range volcano.

Arial view from the North of the Albuquerque Seismological Laboratory on the Kirtland Air Force Base about 15 miles southeast of Albuquerque, New Mexico.

(a) Photograph of instruments being tested in the East portion of the underground vault. (b) Wench and location of three boreholes in the West portion of the underground vault. (c) Cross-tunnel and recording equipment for the reference sensor vault.

Locations of the Global Seismographic Network (GSN) stations. USGS GSN sites are shown as pink circles and IRIS/IDA stations are shown as green circles. (as of October 2024)

Coloring page for geoscience careers. This page highlights those who want to become a volcanologist.

Coordinates of photographer: Latitude: 35° 44’ 16.08” N Longitude: 82° 8’ 20.04” W

Date: 10/17/24

Caption: Damage caused by a large mudflow in Buck Creek near Marion, NC.

Taken during Hurricane Helene LASER response

Coordinates of photographer: Latitude: 35° 33’ 21.75” N, Longitude: 82° 19’ 0.9” W

Date: 10/17/24

Caption: Damage caused by mudflows into Flat Creek near the Garren Creek Fire Station. Some of the initiating landslides are visible in the distance, upper left of photo.

Taken during Hurricane Helene LASER response 

Coloring page for geoscience careers. This page highlights those who want to become a geodesist.

Coloring page for geoscience careers. This page highlights those who want to become a geographer.