Flash Flood Watches in Southeast and Tennessee Valley; Critical Fire Weather in California; Severe Weather in Upper Midwest

Flash flood watches are in effect today in parts of the Southeast and Tennessee Valley from organized areas of heavy to excessive rainfall. Meanwhile, critical fire weather conditions are likely across northern California with offshore winds and dry conditions. Finally, a strong cold front will produce severe thunderstorms across the Upper to Mid Mississippi Valley.
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Last Update: 856 AM PDT Mon Sep 20 2021

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Los Angeles/Oxnard, CA Local Forecast Office

49NM SW Santa Maria CA

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON...
Synopsis: PZZ600-202230- 856 AM PDT Mon Sep 20 2021 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 15Z, or 8 AM PDT, a 1029 MB surface high was centered 700 NM NW of Point Conception and a 1027 MB high was in Nevada. A 1011 MB thermal low was just S of Las Vegas. The high will expand into the Great Basin today and Tuesday. $$

Today
Northwestern portion, NW winds 15 to 20 kt. Elsewhere, NW winds 5 to 10 kt. Combined seas 8 to 10 ft dominant period 11 seconds.
Tonight
NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. NW swell 6 to 7 ft at 12 seconds. Patchy fog after midnight.
Tue
SE winds 5 to 10 kt in the morning, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 6 ft at 12 seconds. Patchy fog in the morning.
Tue Night
Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 5 ft at 11 seconds. Patchy fog after midnight.
Wed
NW winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 4 to 5 ft at 11 seconds. Patchy fog in the morning.
Wed Night
NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 4 to 6 ft at 11 seconds. Patchy fog after midnight.
Thu
NW winds 15 to 20 kt. Combined seas 5 to 7 ft. Patchy fog.
Fri
W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
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ABOUT THIS FORECAST

Last Update: 856 AM PDT Mon Sep 20 2021
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