Heavy rain and flash flooding possible in portions of the Southwest this weekend

An upper-level low in the Southwest U.S. will act as a trigger for thunderstorms this weekend. The area of greatest concern is in New Mexico, southeast Utah and portions of southern Colorado. Storms will be slow moving and could bring several rounds of rain to the same areas. Rainfall amounts may exceed 3 inches in localized areas. Flash Flood Watches are in effect.
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Hazardous Weather Conditions

Last Update: 1019 AM EDT Sun Aug 20 2017

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Miami - South Florida Local Forecast Office

9NM E Virginia Key FL

Marine Zone Forecast


...Small craft should exercise caution around the Gulf stream tonight...
Synopsis: Moderate east-southeast winds will continue over the local waters through the day, becoming fresh tonight and Monday with a moderate chop and seas up to 4 feet. A tropical wave moving over the region today, bringing scattered to numerous showers and thunderstorms. After a break in the rain Monday, another tropical wave will bring scattered to numerous showers and thunderstorms Tuesday into Wednesday. Winds and seas may be locally higher near thunderstorms.

.GULF STREAM HAZARDS...East-southeast winds increasing to 15 to 20 knots late tonight.

The approximate location of the west wall of the Gulf Stream as of Aug 19, 2017 at 1200 UTC...

9 nautical miles east southeast of Fowey Rocks. 15 nautical miles east southeast of Port Everglades. 11 nautical miles east northeast of Lake Worth. 12 nautical miles east of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Rest Of Today
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Intracoastal waters a moderate chop. Showers likely and chance of thunderstorms, then a chance of showers and thunderstorms in the afternoon.
Tonight
East southeast winds 10 to 15 knots along the coast to east southeast 15 to 20 knots in the gulf stream. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters choppy in exposed areas.
Monday
East winds around 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms.
Monday Night
East northeast winds 10 to 15 knots along the coast to east 15 to 20 knots in the gulf stream. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters choppy in exposed areas. A chance of showers and a slight chance of thunderstorms.
Tuesday
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers in the morning. A chance of thunderstorms. Showers likely.
Tuesday Night
Southeast winds 5 to 10 knots along the coast to southeast 10 to 15 knots in the gulf stream. Seas around 2 feet. Intracoastal waters a moderate chop. Showers likely and a chance of thunderstorms.
Wednesday
Southeast winds around 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers and thunderstorms likely.
Wednesday Night And Thursday
South winds 10 to 15 knots. Seas 2 to 3 feet with occasional seas to 5 feet. Intracoastal waters light chop. Showers and thunderstorms likely.
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Last Update: 1019 AM EDT Sun Aug 20 2017
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