N​early 75% of the country is at risk for a potentially damaging earthquake, according to a recently updated USGS map.

Hubbard, who first joined the USGS as a postdoc, is part of the agency’s Earth Mapping Resource Initiative (Earth MRI).

Each New England state felt Monday's 3.9-magnitude earthquake, but here's how far the quake was felt across the region.

LIVE IN PORTSMOUTH KAO WMUR 9 THIS MAP FROM THE U-S GEOLOGICAL SURVEY SHOWS THE áRANGE OF THE SHAKING FROM THIS MORNING'S EARTHQUAKE... WELL INTO VERMONT, AND DOWN PAST THE The earthquake, centered ...