Note: The map shows the area with a tremor magnitude of 4 or greater, which the USGS defines as “mild,” although the earthquake can be felt outside the areas shown. New York Times
A 7.3-magnitude earthquake struck the Coral Sea region on Tuesday, according to the US Geological Survey.
The earthquake briefly triggered a tsunami warning in parts of Vanuatu Tsunami warning system in the United Stateswhich is part of the National Weather Service. By 2:14 p.m. local time, US officials said the threat had ended.
Agency data show that the earthquake occurred at 12:47 pm Vanuatu time, about 19 miles west of Port Vila, Vanuatu.
US Geological Survey data previously reported that the earthquake’s magnitude reached 7.4.
As seismologists review available data, they may revise the magnitude of the reported earthquake. Additional information collected about the quake may also prompt USGS scientists to update the tremor intensity map.
Aftershocks in the area
An aftershock is usually a smaller earthquake that follows a larger earthquake in the same general area. Aftershocks are usually minor adjustments along a portion of a fault that slipped at the time of the initial earthquake.
Earthquakes and aftershocks within 100 miles
Aftershocks can occur days, weeks, or even years after the first earthquake. These events can be equal to or larger in magnitude than the initial earthquake, and can continue to affect already damaged locations.
Source: United States Geological Survey | Notes: Vibration classes depend on Modified Mercalli density size. When aftershock data is available, the corresponding maps and graphs include earthquakes occurring within 100 miles and seven days of the initial quake. All times listed above are Vanuatu time. Vibration data as of Monday, December 16 at 9:01 PM ET. Aftershock data as of Monday, December 16 at 10:32 PM ET.
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