Excessive Heat Continues today for Portions of Central and Eastern U.S.; Change in Weather Pattern this Week

Dangerous heat and humidity continues today from portions of the Plains to the East Coast. A cold front will bring lower temperatures, and potential for strong to severe thunderstorms with damaging winds and heavy rain that could produce flash flooding to the Central and Eastern U.S. through early this week. High pressure shifts West this week with building heat and monsoonal moisture.
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Last Update: 407 PM EDT Sun Jul 21 2019

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Miami - South Florida Local Forecast Office

11NM W Marco Island FL

Marine Zone Forecast


Synopsis: Generally light to occasionally moderate east to southeast winds are expected to prevail over the coastal waters through early in the upcoming week, with winds becoming more southerly to southwesterly into mid-week. Wave heights are expected to range from around 1 to 2 feet. Chances for showers and thunderstorms will persist through Monday, and then increase Monday night into mid-week. Lightning, locally gusty winds, and heavy rain should be the primary concerns with this activity.

.GULF STREAM HAZARDS...None.

The approximate location of the west wall of the Gulf Stream as of Jul 20, 2019 at 1200 UTC...

8 nautical miles southeast of Fowey Rocks. 11 nautical miles east of Port Everglades. 9 nautical miles east southeast of Lake Worth. 14 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Tonight
East winds around 5 knots nearshore and east southeast around 10 knots offshore. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight.
Monday
East southeast winds 5 to 10 knots becoming south southwest in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. Slight chance of thunderstorms in the morning. Chance of showers. Chance of thunderstorms in the afternoon.
Monday Night
East winds 5 knots. Seas less than 1 foot. Period 2 seconds. Bay and inland waters smooth. Slight chance of showers in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight.
Tuesday
South southeast winds 5 knots becoming southwest in the afternoon. Seas less than 1 foot. Period 1 second. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Tuesday Night
Southwest winds 5 knots nearshore and southwest 5 to 10 knots offshore. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Wednesday
West southwest winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Wednesday Night And Thursday
West southwest winds 5 to 10 knots. Seas around 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Thursday Night
Nearshore, southeast winds 5 knots. Offshore, south southwest winds 5 to 10 knots becoming south southeast in the morning. Seas around 2 feet. Bay and inland waters a light chop. Slight chance of showers and thunderstorms.
Friday
Nearshore, southeast winds 5 knots. Offshore, east southeast winds around 5 knots in the morning becoming variable winds less than 5 knots, then becoming north northeast around 5 knots in the evening. Seas less than 2 feet. Bay and inland waters smooth. Showers and thunderstorms likely.
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ABOUT THIS FORECAST

Last Update: 407 PM EDT Sun Jul 21 2019
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