Severe Thunderstorms over the Plains, Heavy Rain Threat Continues over Portions of the Mississippi Valley

Heavy rainfall with localized flooding will remain possible over portions of the Mississippi Valley and the Plains through midweek. In addition, severe thunderstorms will be possible over the southern and central Plains. Some of the storms could contain damaging winds and large hail.
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Hazardous Weather Conditions

Last Update: 306 AM EDT Thu Aug 17 2017

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Miami - South Florida Local Forecast Office

7NM ENE South Palm Beach FL

Marine Zone Forecast


Synopsis: High pressure over the region will keep light to moderate east to southeast flow over the coastal waters, as well as the slight chance for showers and thunderstorms. An upper level low pressure system approaching from the east will bring a higher chance for thunderstorm activity Saturday into Sunday. Seas are forecast to run less than 2 feet until the weekend, then slowly build to 2 to 4 feet, under a strengthening easterly wind.

.GULF STREAM HAZARDS...none.

THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF AUG 17, 2017 AT 1200 UTC...

7 NAUTICAL MILES EAST OF FOWEY ROCKS. 11 NAUTICAL MILES EAST OF PORT EVERGLADES. 11 NAUTICAL MILES EAST SOUTHEAST OF LAKE WORTH. 14 NAUTICAL MILES EAST NORTHEAST OF JUPITER INLET.

THIS DATA COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

Today
East southeast winds 5 to 10 knots. Seas less than 2 feet. Dominant period 7 seconds. Intracoastal waters a light chop. A chance of showers in the morning. A slight chance of thunderstorms. A slight chance of showers in the afternoon.
Tonight
Southeast winds 5 to 10 knots. Seas around 2 feet. Dominant period 3 seconds. Intracoastal waters a light chop. A slight chance of showers and thunderstorms in the evening.
Friday
Southeast winds 5 to 10 knots. Seas around 2 feet. Dominant period 4 seconds. Intracoastal waters a light chop. A slight chance of showers. A slight chance of thunderstorms in the afternoon.
Friday Night
East southeast winds 5 to 10 knots along the coast to east southeast 10 to 15 knots in the gulf stream. Seas around 2 feet. Dominant period 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Saturday
East southeast winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop. Showers and thunderstorms likely.
Saturday Night
Winds southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Sunday And Sunday Night
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Monday
East winds 10 to 15 knots along the coast to east around 15 knots in the gulf stream. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms.
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ABOUT THIS FORECAST

Last Update: 306 AM EDT Thu Aug 17 2017
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