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: 947 PM EDT Fri Aug 18 2017

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Miami - South Florida Local Forecast Office

36NM E Bal Harbour FL

Marine Zone Forecast


Synopsis: Light to moderate east-southeast flow will continue over the local South Florida waters tonight and early Saturday, before increasing Saturday evening as a tropical wave moves through the region. Seas are forecast to build to 4 feet by Sunday night for Atlantic waters. Cautionary conditions will be possible at times on Sunday lasting through early next week.

Isolated to scattered showers and storms are expected over the local waters tonight, becoming more numerous on Saturday and through much of next week as the unsettled pattern continues.

.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.

Rest Of Tonight
East southeast winds 10 to 15 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a moderate chop. Isolated showers after midnight.
Saturday
East winds 5 to 10 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A slight chance of thunderstorms in the morning. A chance of showers through the day. A chance of thunderstorms in the afternoon.
Saturday Night
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 3 seconds. Intracoastal waters a moderate chop. Showers likely in the evening. A chance of thunderstorms through the night. A chance of showers after midnight.
Sunday
East southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Period 5 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Sunday Night
East southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Intracoastal waters choppy in exposed areas. A slight chance of showers.
Monday
East winds around 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Monday Night
East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Tuesday
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. Showers likely and a chance of thunderstorms.
Tuesday Night And Wednesday
South southeast winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers likely and a chance of thunderstorms.
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ABOUT THIS FORECAST

Last Update: 947 PM EDT Fri Aug 18 2017
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