Flash Flood Watches in Southeast and Tennessee Valley; Critical Fire Weather in California; Severe Weather in Upper Midwest

Flash flood watches are in effect today in parts of the Southeast and Tennessee Valley from organized areas of heavy to excessive rainfall. Meanwhile, critical fire weather conditions are likely across northern California with offshore winds and dry conditions. Finally, a strong cold front will produce severe thunderstorms across the Upper to Mid Mississippi Valley.
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For More Weather Information:

Key West, FL Local Forecast Office

3NM NW Davis Reef Light FL

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Scattered Showers

    E 20km/h
    < 1m

    High: 30 °C

  • Tonight

    Scattered Showers

    E 25km/h
    < 1m

    Low: 27 °C

  • Tuesday

    Scattered Showers

    ESE 25km/h
    < 1m

    High: 30 °C

  • Tuesday
    Night

    Scattered Showers

    ENE 20km/h
    < 1m

    Low: 26 °C

  • Wednesday

    Scattered Showers

    E 15km/h
    < 1m

    High: 29 °C

  • Wednesday
    Night

    Scattered Showers

    NE 10km/h
    < 1m

    Low: 27 °C

  • Thursday

    Scattered Showers

    SSE 10km/h
    < 1m

    High: 30 °C

  • Thursday
    Night

    Scattered Showers

    SSE 10km/h
    < 1m

    Low: 27 °C

  • Friday

    Scattered Showers

    SSE 10km/h
    < 1m

    High: 29 °C


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:15 am CDT Sep 20, 2021
Forecast Valid: 12pm CDT Sep 20, 2021-6pm CDT Sep 26, 2021

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Detailed Forecast


Synopsis: A broad high pressure over the eastern third of the United States will result in light to gentle northeast to east breezes peaking and lulling through Wednesday, with peaks generally in the late overnight and early morning hours. A mid- latitude longwave trough will approach the Florida Peninsula by mid to late week, resulting in a return to light and variable breezes. Rain and thunder chances will remain elevated through Friday.

The Approximate Shoreward Edge of the Gulf Stream as of September 18...

49 NM South of Dry Tortugas Light...on Loggerhead Key. 29 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 37 NM South of Sand Key Light...off Key West. 45 NM South of Looe Key...off Big Pine Key. 39 NM South of Sombrero Key Light...off Marathon. 26 NM Southeast of Alligator Reef Light...off Islamorada. 17 NM Southeast of Molasses Reef Light...off Key Largo. 7 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

This Afternoon
E wind 15 to 20 km/h. Scattered showers and thunderstorms. Seas 1 m or less.
Tonight
E wind 15 to 25 km/h. Scattered showers and thunderstorms. Seas 1 m or less.
Tuesday
ESE wind 20 to 25 km/h becoming ENE in the afternoon. Scattered showers and thunderstorms. Seas 1 m or less.
Tuesday Night
ENE wind 15 to 20 km/h. Scattered showers and thunderstorms. Seas 1 m or less.
Wednesday
E wind 10 to 15 km/h. Scattered showers and thunderstorms. Seas 1 m or less.
Wednesday Night
NE wind around 10 km/h becoming E after midnight. Scattered showers and thunderstorms. Seas 1 m or less.
Thursday
E wind around 10 km/h becoming S in the afternoon. Scattered showers and thunderstorms. Seas 1 m or less.
Thursday Night
SSE wind around 10 km/h. Scattered showers and thunderstorms. Seas 1 m or less.
Friday
SSE wind around 10 km/h. Scattered showers and thunderstorms. Seas 1 m or less.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 24.97°N 80.54°W
Last Update: 11:15 am CDT Sep 20, 2021
Forecast Valid: 12pm CDT Sep 20, 2021-6pm CDT Sep 26, 2021
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