Note: The map shows areas with a shaking intensity of 4 or higher, which the USGS defines as “weak,” but earthquakes may be felt outside of the marked areas. new york times
A massive 7.4 magnitude earthquake struck Indonesia on Wednesday, according to the United States Geological Survey (USGS).
The U.S. Pacific Warning Center said “dangerous tsunami waves are expected along some coasts” in the region and said tsunami waves were observed as a result of the quake. Waves of up to 3 feet were possible in Indonesia, while waves of less than 1 foot were possible on other nearby coastlines, according to the center.
The quake occurred at 6:48 p.m. ET about 79 miles northwest of Ternate, Indonesia, according to USGS data.
Seismologists may revise reported earthquake magnitudes as they review available data. Additional information collected about the earthquake may allow USGS scientists to update shaking severity maps.
Aftershocks in the area
Aftershocks are small earthquakes that are usually followed by larger earthquakes in the same area. Aftershocks are usually minor adjustments to the fault section that slipped during the initial earthquake.
Earthquakes and aftershocks within 100 miles
Aftershocks can occur days, weeks, or even years after the first earthquake. These events may be of the same or greater magnitude as the initial earthquake and may continue to impact locations that have already suffered damage.
When an earthquake or aftershock occurs
Source: U.S. Geological Survey | Note: Tremor categories are based on the modified Mercalli intensity scale. When aftershock data is available, the maps and charts include earthquakes within 100 miles and within 7 days of the initial earthquake. All times above are Eastern Time. Shake data is as of Wednesday, April 1 at 7:05 PM ET. Aftershock data is as of 9:18 PM ET on Wednesday, April 1.
