Enhanced Risk for Severe Thunderstorms Across the Upper Midwest; Flash Flooding Possible from the Upper Midwest to Southern Plains and Desert Southwest Through Friday

Portions of the Upper Midwest will see an increased threat for severe thunderstorms through this evening, with a few strong tornadoes possible. The same region remains on alert for additional flash flood concerns. Heavy rainfall may lead to flash flooding across the Desert Southwest today, and Southern Plains by Friday. Finally, Major-to-record river flooding continues across the Carolinas.
Read More...

Hazardous Weather Conditions

For More Weather Information:

Miami - South Florida Local Forecast Office

9NM E South Palm Beach FL

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Slight Chc Thunderstorms

    NE 7kt
    1ft

    High: 86 °F

  • Tonight

    Chance Thunderstorms

    E 9kt
    1ft

    Low: 80 °F

  • Friday

    Chance Thunderstorms

    E 9kt
    1ft

    High: 84 °F

  • Friday
    Night

    Chance Thunderstorms

    E 9kt
    2ft

    Low: 80 °F

  • Saturday

    Chance Thunderstorms

    E 10kt
    3-4ft

    High: 85 °F

  • Saturday
    Night

    Chance Thunderstorms

    E 9kt
    4ft

    Low: 79 °F

  • Sunday

    Chance Thunderstorms

    E 9kt
    4ft

    High: 86 °F

  • Sunday
    Night

    Chance Thunderstorms

    E 8kt
    3ft

    Low: 80 °F

  • Monday

    Chance Thunderstorms

    E 9kt
    3ft

    High: 86 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:46 am EDT Sep 20, 2018
Forecast Valid: 2pm EDT Sep 20, 2018-6pm EDT Sep 26, 2018

View Nearby Observations

Detailed Forecast


Synopsis: Light and variable winds this morning will become northeasterly this afternoon before veering easterly tonight. Speeds will average 5 knots or less early this morning, increasing to around 10 knots this afternoon. Seas will generally be 2 feet or less. Scattered showers and thunderstorms are possible over the Atlantic and Gulf waters into tonight. Prevailing easterly winds are anticipated into this weekend with seas remaining around 2 feet or less. The greatest hazard to boaters through the weekend will be scattered thunderstorms which could produce locally higher winds and waves in addition to lightning.

.GULF STREAM HAZARDS...NONE

The approximate location of the west wall of the Gulf Stream as of Sep 20, 2018 at 1200 UTC...

9 nautical miles northeast of Fowey Rocks. 19 nautical miles east southeast of Port Everglades. 9 nautical miles east southeast of Lake Worth. 12 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

This Afternoon
NE wind 5 to 7 kt. A slight chance of showers, with thunderstorms also possible after 3pm. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth.
Tonight
E wind around 9 kt. A chance of showers and thunderstorms, mainly after 9pm. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters a light chop.
Friday
E wind 6 to 9 kt. A chance of showers and thunderstorms. Seas around 1 ft. Dominant period 3 seconds. Intracoastal waters smooth becoming a light chop.
Friday Night
E wind around 9 kt. A chance of showers and thunderstorms. Seas around 2 ft. Dominant period 4 seconds increasing to 8 seconds. Intracoastal waters a light chop.
Saturday
E wind 7 to 10 kt. A chance of showers and thunderstorms. Seas 3 to 4 ft with occasional seas up to 5 ft. Intracoastal waters a light chop.
Saturday Night
E wind 7 to 9 kt. A chance of showers and thunderstorms. Seas around 4 ft with occasional seas up to 5 ft. Intracoastal waters a light chop.
Sunday
E wind 7 to 9 kt. A chance of showers and thunderstorms. Seas around 4 ft with occasional seas up to 5 ft. Intracoastal waters smooth becoming a light chop.
Sunday Night
E wind around 8 kt. A chance of showers and thunderstorms. Seas around 3 ft with occasional seas up to 4 ft. Intracoastal waters a light chop.
Monday
E wind around 9 kt. A chance of showers and thunderstorms. Seas around 3 ft with occasional seas up to 4 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.
  Select Another Point

ABOUT THIS FORECAST

Point Forecast: 26.62°N 79.88°W
Last Update: 9:46 am EDT Sep 20, 2018
Forecast Valid: 2pm EDT Sep 20, 2018-6pm EDT Sep 26, 2018
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data