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

31NM 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 10 to 15 knots becoming south in the afternoon. Seas 2 to 3 feet with a dominant period 6 seconds. Chance of showers and slight chance of thunderstorms in the afternoon.
Tonight
Southwest winds 10 to 15 knots becoming west after midnight. Seas 2 to 3 feet with a dominant period 4 seconds. Slight chance of showers and thunderstorms in the evening.
Wednesday
West winds 10 to 15 knots becoming east 5 to 10 knots in the afternoon. Seas 2 to 3 feet with a dominant period 9 seconds. Slight chance of showers in the morning. Slight chance of thunderstorms. Chance of showers in the afternoon.
Wednesday Night
Southeast winds 10 knots becoming southwest after midnight. Seas 2 feet. Chance of showers and slight chance of thunderstorms.
Thursday
Southwest winds 5 to 10 knots becoming south in the afternoon. Seas 2 to 3 feet. Chance of showers in the morning. Slight chance of thunderstorms. Showers likely in the afternoon.
Thursday Night
South winds 10 to 15 knots. Seas 2 to 3 feet. Chance of showers and slight chance of thunderstorms.
Friday
South winds 5 to 10 knots. Seas 2 to 3 feet. Chance of showers and thunderstorms.
Friday Night
South winds 10 to 15 knots. Seas 3 to 4 feet. Chance of showers and thunderstorms.
Saturday
Southwest winds 5 to 10 knots becoming south in the afternoon. Seas 2 to 3 feet. Chance of showers and thunderstorms.
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ABOUT THIS FORECAST

Last Update: 315 AM EDT Tue Aug 16 2022
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