Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic.
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Last Update: 838 PM EDT Thu Jul 20 2017

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Tampa Bay, FL Local Forecast Office

8NM W Lynn Silvertooth Reef FL

Marine Zone Forecast


Synopsis: High pressure is expected to hold over the waters through the remainder of the week and into the weekend. Very weak gradient will keep winds less than 10 knots and seas less than 2 feet through the period. However, higher winds and seas will occur in the vicinity of thunderstorms which will be the main hazard over the next several days. Best chance for thunderstorms will likely be during the late night and early morning hours.

Rest Of Tonight
Southwest winds around 5 knots then becoming south after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated thunderstorms.
Friday
South winds around 5 knots then becoming southwest in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Isolated thunderstorms.
Friday Night
Southwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Isolated thunderstorms.
Saturday
South winds around 5 knots then becoming southwest around 5 knots in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Scattered thunderstorms.
Saturday Night
Southwest winds around 10 knots diminishing to around 5 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Isolated thunderstorms.
Sunday
Southwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Scattered thunderstorms.
Sunday Night
Southwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Isolated thunderstorms.
Monday
Southwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Scattered thunderstorms.
Monday Night
West winds around 5 knots then becoming northwest after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated thunderstorms.
Tuesday
North winds around 5 knots then becoming west in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Scattered thunderstorms.
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Last Update: 838 PM EDT Thu Jul 20 2017
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