Dangerous Heat Building in the West; Severe Storms in the Upper Midwest

A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
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Hazardous Weather Conditions

For More Weather Information:

Miami - South Florida Local Forecast Office

11NM ESE South Palm Beach FL

Marine Point Forecast

[NOTICE]
  • Overnight

    Partly Cloudy

    SE 11kt
    2ft

    Low: 83 °F

  • Friday

    Slight Chc Showers

    SE 9kt
    1-2ft

    High: 87 °F

  • Friday
    Night

    Slight Chc Showers

    SE 9kt
    1ft

    Low: 82 °F

  • Saturday

    Slight Chc Showers

    SSE 7kt
    1ft

    High: 87 °F

  • Saturday
    Night

    Slight Chc Showers

    SE 8kt
    1ft

    Low: 82 °F

  • Sunday

    Chance Thunderstorms

    SSE 8kt
    1ft

    High: 87 °F

  • Sunday
    Night

    Chance Thunderstorms

    SSE 7kt
    1ft

    Low: 81 °F

  • Monday

    Chance Thunderstorms

    SSE 9kt
    1ft

    High: 87 °F

  • Monday
    Night

    Chance Thunderstorms

    SSE 9kt
    1ft

    Low: 81 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:01 am EDT Aug 14, 2020
Forecast Valid: 2am EDT Aug 14, 2020-6pm EDT Aug 20, 2020

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Detailed Forecast


Synopsis: High pressure across the Atlantic waters is maintaining light easterly to southeasterly surface flow and generally favorable marine conditions. Isolated to scattered showers and storms are most likely across the Atlantic waters during the overnight and morning hours, transitioning to the Gulf waters during the late afternoon and early evening hours. The primary impacts with any storms will be locally gusty winds, lightning, and brief reductions to visibility during heavy downpours. Isolated waterspouts will also be possible, primarily during the morning hours.

.GULF STREAM HAZARDS...Locally higher winds and waves in and around showers and thunderstorms.

The approximate location of the west wall of the Gulf Stream as of Aug 13, 2020 at 1200 UTC...

6 nautical miles east southeast of Fowey Rocks. 11 nautical miles east northeast of Port Everglades. 8 nautical miles east southeast of Lake Worth. 13 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Overnight
SE wind around 11 kt. Partly cloudy. Seas around 2 ft. Dominant period 3 to 4 seconds. Intracoastal waters a light chop.
Friday
SE wind around 9 kt. A slight chance of showers between 8am and 1pm. Seas 1 to 2 ft. Dominant period 4 seconds. Intracoastal waters a light chop.
Friday Night
SE wind around 9 kt. A slight chance of showers between 11pm and 1am. Seas around 1 ft. Dominant period 3 to 4 seconds. Intracoastal waters a light chop.
Saturday
SSE wind around 7 kt. A slight chance of showers before 8am, then a slight chance of showers after 10am. Seas around 1 ft. Dominant period 3 to 4 seconds. Intracoastal waters smooth.
Saturday Night
SE wind 6 to 8 kt. A slight chance of showers. Seas around 1 ft. Intracoastal waters a light chop becoming smooth.
Sunday
SSE wind 5 to 8 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Seas around 1 ft. Intracoastal waters smooth.
Sunday Night
SSE wind around 7 kt. A chance of showers and thunderstorms, mainly before 8pm. Seas around 1 ft. Intracoastal waters smooth.
Monday
SSW wind 5 to 9 kt becoming SSE in the afternoon. A chance of showers and thunderstorms. Seas around 1 ft. Intracoastal waters smooth becoming a light chop.
Monday Night
SSE wind around 9 kt. A chance of showers and thunderstorms. Seas around 1 ft. Intracoastal waters a light chop.

*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: 26.55°N 79.86°W
Last Update: 1:01 am EDT Aug 14, 2020
Forecast Valid: 2am EDT Aug 14, 2020-6pm EDT Aug 20, 2020
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