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

Last Update: 955 AM EDT Thu Sep 20 2018

View Nearby Observations

For More Weather Information:

Miami - South Florida Local Forecast Office

10NM E Virginia Key FL

Marine Zone 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.

Rest Of Today
East northeast winds 5 to 10 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of showers and thunderstorms in the morning...then a slight chance of showers and thunderstorms.
Tonight
East winds 5 to 10 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of showers and thunderstorms.
Friday
East winds 5 to 10 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of showers and thunderstorms.
Friday Night
East winds 5 to 10 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of showers and thunderstorms.
Saturday Through Monday
East winds 5 to 10 knots. Seas 2 to 3 feet with occasional seas to 5 feet. Intracoastal waters a light chop. A chance of showers and thunderstorms.
  Click Map For Detailed Forecast

ABOUT THIS FORECAST

Last Update: 955 AM EDT Thu Sep 20 2018
  Forecast Discussion
   

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data