The National Weather Service’s Heat Risk tool gives people region specific information on heat-related impacts.

The National Weather Service urged people to avoid travel if a flash flood warning was in place for their area.

Risk heat maps are simply mappings of various business elements’ magnitude of risk. Many companies use them as their primary risk-assessment tool, but they don’t paint a complete picture.

Major heat risk was reported in Pennsylvania, Maryland, New York, Vermont, New Hampshire, Maine, Virginia, New Jersey and Massachusetts on Monday, according to the NWS.

CNN is tracking extreme heat conditions for Americans each day. See where the risks are greatest — and where high temperature records might be broken.

A heat mapping project in the Reno-Sparks area has revealed how temperatures vary across the Truckee Meadows. Led by the Nevada State Climate Office at the University of Nevada, Reno, and Desert ...