Flash Flood Watches in Southeast and Tennessee Valley; Critical Fire Weather in California; Severe Weather in Upper Midwest

Flash flood watches are in effect today in parts of the Southeast and Tennessee Valley from organized areas of heavy to excessive rainfall. Meanwhile, critical fire weather conditions are likely across northern California with offshore winds and dry conditions. Finally, a strong cold front will produce severe thunderstorms across the Upper to Mid Mississippi Valley.
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Hazardous Weather Conditions

Last Update: 1118 AM EDT Mon Sep 20 2021

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Melbourne, FL Local Forecast Office

11NM ESE Ft. Pierce Inlet FL

Marine Zone Forecast


Synopsis: A light to gentle southeast breeze will develop today and Tuesday as high pressure builds over the western Atlantic. Winds will veer to south and southwest Wednesday ahead of an approaching cool front, then become light and chaotic again through the end of the week as the front stalls across central Florida. Seas well offshore could approach 5 feet by Friday due to a swell from distant Tropical Storm Peter. Deep moisture remaining in place will keep coverage of showers and storms well above normal.

.GULF STREAM HAZARDS...None.

The approximate location of the west wall of the Gulf Stream based on the Real Time Ocean Forecast System as of Saturday, September 18th.

42 nautical miles east of Ponce Inlet. 30 nautical miles east of Port Canaveral. 23 nautical miles east of Sebastian Inlet. 14 nautical miles east of Fort Pierce Inlet. 9 nautical miles east of Saint Lucie Inlet.

This Afternoon
Southeast winds 5 to 10 knots. Seas 2 feet with a dominant period 8 seconds. A light chop on the intracoastal waters. Chance of showers late in the morning. Chance of thunderstorms. Showers likely in the afternoon.
Tonight
Southeast winds 5 to 10 knots. Seas 2 to 3 feet with a dominant period 8 seconds. Mostly smooth on the intracoastal waters. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms after midnight.
Tuesday
East winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Showers likely and slight chance of thunderstorms.
Tuesday Night
East winds 5 to 10 knots. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Chance of showers and slight chance of thunderstorms.
Wednesday
East winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Numerous showers and isolated thunderstorms.
Wednesday Night
Southeast winds 5 to 10 knots becoming southwest after midnight. Seas 2 to 3 feet. Scattered showers and isolated thunderstorms.
Thursday
Southwest winds 5 knots becoming southeast in the afternoon. Seas 2 to 3 feet. Numerous showers and scattered thunderstorms.
Thursday Night
South winds 5 knots. Seas 2 to 3 feet. Chance of showers and slight chance of thunderstorms.
Friday
East winds 5 knots. Seas 3 to 4 feet. Numerous showers and scattered thunderstorms.
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ABOUT THIS FORECAST

Last Update: 1118 AM EDT Mon Sep 20 2021
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