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: 350 PM EDT Sun Sep 15 2019

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Jacksonville, FL Local Forecast Office

9NM E Jacksonville Beach FL

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...
Synopsis: Strong north northeast winds and rough seas will continue today between high pressure north of the waters and Tropical Cyclone Humberto to the southeast. Humberto is moving slowly moving north northwest. Humberto is forecast to track north later today and then northeast on Monday. Local mariners should monitor the latest official forecasts from the National Hurricane Center. Another surge of northeast winds will occur late Wednesday through Thursday as strong high pressure builds north of area waters.

.GULF STREAM...

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

40 nautical miles east of Flagler Beach. 53 nautical miles east southeast of Saint Augustine Beach. 69 nautical miles east of Jacksonville Beach. 88 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

Tonight
North northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet subsiding to 5 to 7 feet with occasional seas up to 9 feet after midnight. Dominant period 10 seconds. Inland waters choppy. A chance of showers and thunderstorms.
Monday
North winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Inland waters choppy. A chance of showers and thunderstorms.
Monday Night
North winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Inland waters a moderate chop.
Tuesday
North northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Inland waters a moderate chop.
Tuesday Night
Northeast winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Inland waters a light chop.
Wednesday
Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of thunderstorms.
Wednesday Night
Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. A chance of showers and a slight chance of thunderstorms.
Thursday And Thursday Night
East northeast winds 20 to 25 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Showers likely and a slight chance of thunderstorms.
Friday
East northeast winds around 15 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Showers likely.
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Last Update: 350 PM EDT Sun Sep 15 2019
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