Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >
Forecast Maximum Heat Index for Day 1 | ||
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Heat Related Watch/Warning/Advisory Criteria |
The National Weather Service in Tampa Bay issues heat related Watch, Warning, and Advisory statements when the following criteria are forecast:
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The images below are the official NWS heat index forecast in degrees Fahrenheit for the next 7 days. These heat indices are determined by NWS forecasters to be the most likely outcome based on evaluation of data from computer models, satellite, radar, and other observations. |
These graphics are updated at least twice per day, around 4:15 AM/4:15 PM. They can be magnified (enlarged) by left clicking on them, and resized back to original size with a second click. |
TBW CWA |
Nature Coast |
West Central |
Southwest |
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Day 1 |
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Day 2 |
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Day 3 |
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Day 4 |
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Day 5 |
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Day 6 |
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Day 7 |
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Other graphics like these, including forecast High Temperature, Low Temperature, and Rainfall are available within our Probabilistic DSS web page. |