Heat maps show half U.S. under advisories, warnings
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Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11 am. Sunny and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming southeast around 5 mph in the afternoon. The chance of precipitation is 40%.
High heat and humidity could break records as a heat wave continues to scorch southern New England on Wednesday, but conditions could change drastically.
Nashville's NWS issues a Heat Advisory warning of extreme temperatures and high humidity until Wednesday evening.
An intense heat wave threatens millions of people across the Southeast with temperatures reaching 115 degrees through midweek.
The National Weather Service's heat advisory will run through Wednesday night, with the heat index expected to surpass 100 degrees for the second day in a row.
Orlando Sweats Under Intense Heat Wave, National Weather Service Issues Advisory for Central Florida
Orlando heat wave triggers Heat Advisory with temperatures reaching mid to upper 90's and heat index up to 110°F.
Tampa avoided a second day of record-breaking 100-degree temperatures on Monday, but dangerous heat index levels remained as the area contended with a historic blast of steamy weather that will continue at least through Tuesday.
More than 11 million people across southern Georgia and most of Florida were under a rare “extreme” heat warning on Tuesday.