Severe Thunderstorms Possible for the Great Lakes into Ohio Valley; Heavy to Excessive Rainfall Over the Southern Plains

Severe thunderstorms will race along a cold front from the Upper Mississippi Valley into the Great Lakes and Ohio Valley with the main threat being damaging winds. The tail end of this front will possibly produce heavy to excessive rainfall across the southern Plains into the Lower Mississippi Valley through Saturday. Finally, Major-to-record river flooding continues across the Carolinas.
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Last Update: 836 PM PDT Thu Sep 20 2018

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14NM WSW San Francisco CA

Marine Zone Forecast


Synopsis: PZZ500-211630- 836 PM PDT Thu Sep 20 2018 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Winds will decrease overnight and become light southerly along the coast as a thermal trough shifts offshore. High pressure will rebuild over the eastern Pacific Sunday resulting in the return of northwest winds. $$

Tonight
NW winds 5 to 15 kt. Wind waves 3 to 4 ft this evening...becoming 2 ft or less. NW swell around 3 ft at 8 seconds.
Fri
S winds 5 to 15 kt. Wind waves 3 to 4 ft. NW swell 3 to 4 ft at 8 seconds. Patchy fog.
Fri Night
W winds up to 10 kt. Wind waves 2 ft or less. NW swell around 3 ft at 8 seconds. Patchy fog.
Sat
W winds 5 to 15 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell around 3 ft at 8 seconds.
Sat Night
NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. NW swell 3 to 5 ft at 9 seconds.
Sun
NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 6 ft. NW swell around 3 ft.
Sun Night
NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 6 ft. NW swell 3 to 4 ft.
Mon
NW winds up to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Tue
NW winds up to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...combined seas 5 to 7 ft with a dominant period of 10 seconds. across the bar...combined seas 6 to 8 ft with a dominant period of 10 seconds. Maximum ebb current of 1.7 knots at 01:37 am friday and 2 knots at 02:07 pm friday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Combined seas 5 to 7 ft with a dominant period of 10 seconds. ACROSS THE BAR...Combined seas 6 to 8 ft with a dominant period of 10 seconds. Maximum ebb current of 1.7 knots at 01:37 AM Friday and 2 knots at 02:07 PM Friday.
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ABOUT THIS FORECAST

Last Update: 836 PM PDT Thu Sep 20 2018
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