Images

Icon used to refer to ShakeMap on Product landing pages. For example use, see https://staging-earthquake.usgs.gov/data/pager/background.php.

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 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 “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 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.

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)

[Page 5]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Page 3]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Page 4]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Page 8]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Cover] 

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Page 2]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

[Page 6]

Did you feel that? The annual Great ShakeOut Earthquake Drill is coming on Thursday, Oct. 17, 2024, at 10:17 a.m. (local time, wherever you are). We never know where or when an earthquake may happen, but preparing is easier than assembling a piece of Scandinavian furniture. 

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