Gov. Gavin Newsom on Thursday announced the launch of a new, first-in-the-nation tool to forecast and rank heat severity in areas across California.

SACRAMENTO, Calif — California has launched a new rating system to help people prepare for extreme heat events in the state, ...

Google Messages now shows an RCS label next to contacts, letting Android users instantly spot who supports rich texting features before starting a chat.

A University of Maryland study reveals more frequent and intense marine heat waves in Chesapeake Bay using advanced satellite ...

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An early-season heat dome is building over the Gulf of Mexico and will bring a week of unusual heat and humidity to southern states, from Texas to Florida, and southward into Mexico and the Caribbean.

The heat coming to Ohio before the weekend could be a little worse that earlier forecasts predicted. These maps show where it will be the hottest. The hot weather approaching Ohio is looking hotter.

NWS maps show the hot weather creeping eastward this week and into Buckeye State That might give Ohioans the chance to test out their A/C for the year before the real heat of summer settles in.

Maps from the weather service also show the heat moving eastward, and by Friday, May 16, highs in the 80s and 90s could reach New York. This sudden spike in heat follows weeks of stormy and ...