Locally Heavy Rainfall Possible Over the Four Corners; Critical Fire Weather Conditions in the Great Basin

Monsoon moisture will result in locally heavy showers and thunderstorms over the Four Corners region, which could lead to flash flooding. While, critical fire weather threats are expected for much of the Great Basin, from dry and windy conditions. Finally, Tropical Cyclone Humberto remains well offshore of the Southeast, but rip currents and heavy surf are expected from Florida to the Carolinas.
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Last Update: 938 AM EDT Sun Sep 15 2019

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Miami - South Florida Local Forecast Office

11NM W Marco Island FL

Marine Zone Forecast


Synopsis: Swells produced by Tropical Storm Humberto in the Atlantic will cause hazardous marine conditions to develop starting as soon as tonight. Showers and thunderstorms continue to be possible through the week, although the chances should be on a downward trend after the beginning of the week.

.GULF STREAM HAZARDS...Seas are forecast to build to 7 feet by Monday and increase to around 9 feet by Wednesday due to a northerly swell.

The approximate location of the west wall of the Gulf Stream as of Sep 14, 2019 at 1200 UTC...

11 nautical miles southeast of Fowey Rocks. 14 nautical miles east southeast of Port Everglades. 7 nautical miles east southeast of Lake Worth. 9 nautical miles northeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Rest Of Today
South winds 5 to 10 knots becoming west. Seas less than 2 feet. Period 1 second increasing to 2 seconds. Bay and inland waters a light chop. Slight chance of showers in the morning. Slight chance of thunderstorms. Chance of showers.
Tonight
West northwest winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Slight chance of showers late in the evening. Slight chance of thunderstorms through the night. Chance of showers after midnight.
Monday
West northwest winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Chance of showers and slight chance of thunderstorms.
Monday Night
North northwest winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Slight chance of showers and thunderstorms late in the evening.
Tuesday
Northwest winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop.
Tuesday Night
North northeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop.
Wednesday
North northeast winds 5 to 15 knots. Seas less than 2 feet. Bay and inland waters a light chop. Slight chance of showers and thunderstorms.
Wednesday Night
Northeast winds 10 to 15 knots nearshore and northeast around 15 knots offshore. Seas around 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms late in the evening, then slight chance of showers and thunderstorms after midnight.
Thursday
Northeast winds 10 to 20 knots. Seas around 2 feet. Bay and inland waters a moderate chop. Chance of showers and thunderstorms.
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Last Update: 938 AM EDT Sun Sep 15 2019
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