Western Heat and Monsoon Continues; Increasing Moisture in the East

High pressure continues to produce excessive heat and critical fire weather conditions for portions of the west, with heavy rains and potential for flash flooding associated with the monsoons in the southwest. Meanwhile, a cold front approaching the east coast is increasing the humidity and heat index, and bringing potential for heavy rain and flash flooding.
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Hazardous Weather Conditions

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Key West, FL Local Forecast Office

11NM ESE Sombrero Key Light FL

Marine Point Forecast

[NOTICE]
  • Today

    Isolated Thunderstorms

    Light Wind
    1ft

    High: 88 °F

  • Tonight

    Isolated Thunderstorms

    E 10kt
    1-2ft

    Low: 83 °F

  • Tuesday

    Scattered Thunderstorms

    SE 10kt
    2ft

    High: 88 °F

  • Tuesday
    Night

    Isolated Thunderstorms

    E 10kt
    2ft

    Low: 85 °F

  • Wednesday

    Isolated Thunderstorms

    Light Wind
    2ft

    High: 88 °F

  • Wednesday
    Night

    Isolated Thunderstorms

    Light Wind
    1ft

    Low: 85 °F

  • Thursday

    Isolated Thunderstorms

    Light Wind
    1ft

    High: 88 °F

  • Thursday
    Night

    Isolated Thunderstorms

    Light Wind
    1ft

    Low: 85 °F

  • Friday

    Isolated Thunderstorms

    Light Wind
    1ft

    High: 88 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:15 am EDT Jul 16, 2018
Forecast Valid: 5am EDT Jul 16, 2018-6pm EDT Jul 22, 2018

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Detailed Forecast


Synopsis: A weak pressure pattern over the Florida Keys coastal waters will result in light southeast breezes overnight. Weak high pressure will build into the area Monday and Tuesday bringing light to gentle southeast breezes.

The Approximate Shoreward Edge of the Gulf Stream current, as of July 14th, 2018.

49 NM South of Dry Tortugas Light, on Loggerhead Key. 29 NM South of Cosgrove Shoal Light, off the Marquesas Keys. 23 NM South of Sand Key Light, off Key West. 15 NM South of Looe Key, off Big Pine Key. 15 NM South of Sombrero Key Light, off Marathon. 15 NM Southeast of Alligator Reef Light, off Islamorada. 12 NM Southeast of Molasses Reef Light, off Key Largo. 9 NM East of Carysfort Reef Light, off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Today
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 1 ft.
Tonight
E wind 5 to 10 kt. Isolated showers and thunderstorms. Seas 1 to 2 ft.
Tuesday
SE wind 5 to 10 kt. Scattered showers and thunderstorms. Seas around 2 ft.
Tuesday Night
E wind 5 to 10 kt. Isolated showers and thunderstorms. Seas around 2 ft.
Wednesday
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 2 ft.
Wednesday Night
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Isolated showers and thunderstorms. Seas around 1 ft.

*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: 24.54°N 80.91°W
Last Update: 4:15 am EDT Jul 16, 2018
Forecast Valid: 5am EDT Jul 16, 2018-6pm EDT Jul 22, 2018
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