Strong to Severe Thunderstorms, Heavy Rain, And Flash Flooding Across the Midwest

Strong to severe thunderstorms, heavy rain and flooding is possible from the Great Lakes to the south-central Plains, as a strong cold front pushes into the extended area. Meanwhile, well above average temperatures are very likely across the Northeastern quad of the country, including the Northeast, Mid-Atlantic, Great Lakes and Ohio Valley.
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Last Update: 258 AM EDT Sun Sep 22 2019

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Miami - South Florida Local Forecast Office

11NM ESE South Palm Beach FL

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...
Synopsis: Fresh to strong ENE breezes will create hazardous conditions for small craft operators across all South Florida waters this weekend. Steep waves remain a concern in the Atlantic due to wind driven waves and the gradually subsiding long period swell. Small Craft Advisories continue for all South Florida waters through Sunday night, and small craft operators should exercise extreme caution, especially around jetties and inlets.

.GULF STREAM HAZARDS...Seas of 8 to 12 feet are expected. The highest seas are expected off the Palm Beach County coast, but at least occasional seas in this height range are possible elsewhere in the Gulf Stream. Extreme caution is advised for mariners.

The approximate location of the west wall of the Gulf Stream as of Sep 21, 2019 at 1200 UTC...

7 nautical miles east northeast of Fowey Rocks. 14 nautical miles east of Port Everglades. 13 nautical miles east northeast of Lake Worth. 13 nautical miles east of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Today
East northeast winds 20 to 25 knots. Seas 7 to 9 feet with occasional seas to 11 feet. Period 6 seconds. Northeast swell 4 feet. Intracoastal waters rough in exposed areas. Slight chance of light showers in the afternoon.
Tonight
East northeast winds 15 to 20 knots with gusts to around 30 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Period 6 seconds. East northeast swell 3 feet. Intracoastal waters choppy in exposed areas. Chance of light showers in the evening. Slight chance of light showers after midnight.
Monday
Northeast winds around 15 knots with gusts to around 25 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 5 seconds. Intracoastal waters a moderate chop.
Monday Night
Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Period 5 seconds. Intracoastal waters a moderate chop.
Tuesday
Northeast winds around 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop.
Tuesday Night And Wednesday
East northeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop.
Wednesday Night
East southeast winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop.
Thursday
East winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop.
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ABOUT THIS FORECAST

Last Update: 258 AM EDT Sun Sep 22 2019
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