Dangerous Heat Lingers in Southern U.S. And Severe Thunderstorms In The Central U.S.

Heat advisories and excessive heat warnings persist across the Southern U.S. today, including the Dallas, Houston and New Orleans metro areas. Dangerous heat indices with record high temperatures are expected, especially in Texas. Meanwhile, a strong cold front moving through the Central U.S. will produce severe thunderstorms from the Upper Mississippi Valley to the south-central High Plains.
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Last Update: 901 AM EDT Tue Jul 14 2020

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Jacksonville, FL Local Forecast Office

9NM E Marineland FL

Marine Zone Forecast


Synopsis: Weak troughing will remain situated just north of the Georgia waters through midweek, resulting in prevailing offshore winds during the overnight and morning hours that will shift to onshore during the afternoon. Scattered showers and thunderstorms will be possible through midweek, especially during the afternoon and evening hours in the near shore waters. High pressure will then build over the Canadian Maritime region late this week and will slowly expand down the southeastern seaboard, shifting winds to a prevailing onshore direction through the weekend. An easterly wave may cross our local waters on Saturday, potentially increasing shower and thunderstorm coverage throughout our local waters.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of Jul 14, 2020 at 1200 UTC...

59 nautical miles east of Flagler Beach. 72 nautical miles east southeast of Saint Augustine Beach. 67 nautical miles east northeast of Jacksonville Beach. 71 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

Rest Of Today
West winds 5 to 10 knots becoming south southeast in the afternoon. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters smooth. A chance of showers and thunderstorms.
Tonight
South southwest winds 5 to 10 knots becoming west after midnight. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers and thunderstorms.
Wednesday
Northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Wednesday Night
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Thursday
East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Thursday Night Through Saturday
East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Showers and thunderstorms likely.
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ABOUT THIS FORECAST

Last Update: 901 AM EDT Tue Jul 14 2020
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