Heavy Rainfall and Flash Flood Threats Shift From Southern Plains to Lower Mississippi Valley; Elevated to Critical Fire Concerns Out West

Heavy to excessive rainfall with flash flood concerns will shift from the southern Plains into the Lower Mississippi Valley. Elevated to Critical Fire weather threats will linger through the weekend across the Great Basin and central Rockies. Finally, Major to Record river flooding will continue in portions of the Midwest and across parts of North and South Carolina this weekend.
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Hazardous Weather Conditions

Last Update: 421 PM EDT Sat Sep 22 2018

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Miami - South Florida Local Forecast Office

4NM WSW Marco Island FL

Marine Zone Forecast


Synopsis: High pressure centered over the mid-Atlantic will bring light to moderate east southeast flow over South Florida waters for much of the upcoming week as it builds southwards. Scattered showers and thunderstorms are expected across the Atlantic waters during the overnight and morning hours, and afternoon and evening activity around the Lake Okeechobee and the nearshore Gulf waters. A small northeast swell of 1 to 3 feet will continue to move through the local Atlantic waters of Palm Beach County through the remainder of the weekend.

.GULF STREAM HAZARDS...None.

The approximate location of the west wall of the Gulf Stream is not available at this time.

Tonight
East winds 5 to 10 knots. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. A chance of showers and thunderstorms in the evening... Then a slight chance of showers and thunderstorms after midnight.
Sunday
East winds 5 to 10 knots becoming south southeast in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. A slight chance of showers and thunderstorms in the morning...then a chance of showers and thunderstorms in the afternoon.
Sunday Night
East winds 5 knots nearshore and east 5 to 10 knots offshore. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. A chance of showers and thunderstorms in the evening. A slight chance of showers and thunderstorms after midnight.
Monday
East winds 5 to 10 knots becoming south southeast in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. A slight chance of showers and thunderstorms in the morning...then a chance of showers and thunderstorms in the afternoon.
Monday Night
East winds 5 knots. Seas less than 2 feet. Bay and inland waters smooth. A slight chance of showers and thunderstorms.
Tuesday
Southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and thunderstorms.
Tuesday Night
East southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and thunderstorms.
Wednesday
South southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and thunderstorms.
Wednesday Night
East southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and thunderstorms.
Thursday
Southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and thunderstorms.
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ABOUT THIS FORECAST

Last Update: 421 PM EDT Sat Sep 22 2018
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