Excessive Heat in the Interior West; Monsoon Conditions in the Southwest

Dangerous heat is expected to be in place across portions of California, especially the Central Valley, and across the Interior Northwest into Friday. Heat Advisories will also be in place across the southern Plains into the Lower Mississippi River Valley. Monsoonal showers and thunderstorms may result in flash flooding and debris flows from the Four Corners region and Southwest through Friday.
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Last Update: 315 AM EDT Tue Aug 16 2022

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Jacksonville, FL Local Forecast Office

6NM E Mayport FL

Marine Zone Forecast


Synopsis: A frontal boundary will be stalled over the area through Thursday. This boundary will be the focus for daily rounds of showers and thunderstorms. The front will weaken late in the week, as high pressure builds to the east northeast into the weekend.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of Aug 13, 2022 at 1200 UTC...

57 nautical miles east of Flagler Beach. 72 nautical miles east southeast of Saint Augustine Beach. 82 nautical miles east of Jacksonville Beach. 99 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

Today
Southwest winds 5 to 10 knots becoming south early in the afternoon, then increasing to 10 to 15 knots late in the afternoon. Seas 2 to 3 feet with a dominant period 6 seconds. A moderate chop on the intracoastal waters. Chance of showers and slight chance of thunderstorms in the afternoon.
Tonight
Southwest winds 10 to 15 knots becoming west 5 to 10 knots after midnight. Seas 2 to 3 feet with a dominant period 9 seconds. A light chop on the intracoastal waters. Slight chance of showers and thunderstorms in the evening.
Wednesday
Northwest winds 5 to 10 knots becoming east in the afternoon. Seas 1 to 2 feet with a dominant period 9 seconds. A light chop on the intracoastal waters. Slight chance of thunderstorms in the morning. Chance of showers. Chance of thunderstorms in the afternoon.
Wednesday Night
Southeast winds 5 to 10 knots becoming southwest after midnight. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. Chance of showers in the evening. Slight chance of thunderstorms. Slight chance of showers after midnight.
Thursday
Southwest winds 5 to 10 knots becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. Slight chance of showers and thunderstorms in the morning, then showers likely and chance of thunderstorms in the afternoon.
Thursday Night
South winds 10 knots becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Chance of showers and slight chance of thunderstorms.
Friday
South winds 5 to 10 knots becoming southeast in the afternoon. Seas 2 to 3 feet. Showers likely and chance of thunderstorms.
Friday Night
South winds 5 to 10 knots becoming southwest after midnight. Seas 2 to 3 feet. Chance of showers and thunderstorms.
Saturday
South winds 5 to 10 knots becoming southeast in the afternoon. Seas 2 to 3 feet. Chance of showers and thunderstorms.
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Last Update: 315 AM EDT Tue Aug 16 2022
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