Heavy Rain in the Central Gulf; Wintry in Central Rockies and Northeast

Showers and thunderstorms forming along a stalled front may produce isolated strong to severe thunderstorms and heavy rain that could cause flooding in the Central Gulf. A late season winter storm will continue producing hazardous travel in the Central Rockies and into the High Plains. A coastal storm is bringing wintry conditions and gusty winds to parts of the Northeast.
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Last Update: 938 AM EDT Fri Apr 16 2021

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Jacksonville, FL Local Forecast Office

6NM E Mayport FL

Marine Zone Forecast


Synopsis: A weak cold front will cross our local waters later today. This front will stall over central Florida tonight as weak low pressure develops over the lower Mississippi Valley and moves eastward. This low pressure center will cross southern Georgia on Saturday and will move offshore on Saturday night, with a weak frontal boundary then lingering over the northeast Florida waters through the middle portion of next week as waves of low pressure develop over the northeast Gulf of Mexico and move across north central Florida. Waves of showers and thunderstorms will impact the waters from this weekend through Tuesday. A stronger cold front is then expected to sweep across our area on Wednesday.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of Apr 15, 2021 at 1200 UTC...

59 nautical miles east of Flagler Beach. 64 nautical miles east of Saint Augustine Beach. 74 nautical miles east of Jacksonville Beach. 86 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

Rest Of Today
Northwest to north winds 10 to 15 knots, becoming northeast in the afternoon. Seas 2 to 3 feet with a dominant period 12 seconds. A moderate chop on the intracoastal waters. chance of showers and slight chance of thunderstorms in the afternoon.
Tonight
East winds 5 to 10 knots. Seas 2 to 3 feet with a dominant period 11 seconds. Mostly smooth on the intracoastal waters. Chance of showers and slight chance of thunderstorms.
Saturday
East winds 5 to 10 knots becoming southeast in the afternoon. Seas 2 to 3 feet with a dominant period 11 seconds. A light chop on the intracoastal waters. Showers likely and chance of thunderstorms in the morning, then chance of showers and slight chance of thunderstorms in the afternoon.
Saturday Night
South winds 5 to 10 knots becoming west after midnight. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Chance of showers and slight chance of thunderstorms in the evening, then showers likely and chance of thunderstorms after midnight.
Sunday
Northwest winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Showers likely and chance of thunderstorms.
Sunday Night
West winds 5 to 10 knots. Seas 2 to 3 feet. Chance of showers and slight chance of thunderstorms.
Monday
Northwest winds 5 to 10 knots becoming northeast in the afternoon. Seas 1 to 2 feet. Chance of showers and thunderstorms.
Monday Night
East winds 5 to 10 knots. Seas 1 to 2 feet. Chance of showers and slight chance of thunderstorms.
Tuesday
Northeast winds 10 knots. Seas 1 to 2 feet. Showers likely and chance of thunderstorms.
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Last Update: 938 AM EDT Fri Apr 16 2021
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