Severe Thunderstorms over the Plains, Heavy Rain Threat Continues over Portions of the Mississippi Valley

Heavy rainfall with localized flooding will remain possible over portions of the Mississippi Valley and the Plains through midweek. In addition, severe thunderstorms will be possible over the southern and central Plains. Some of the storms could contain damaging winds and large hail.
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Last Update: 253 AM PDT Thu Aug 17 2017

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17NM SW San Francisco CA

Marine Zone Forecast


Synopsis: PZZ500-171615- 253 AM PDT Thu Aug 17 2017 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Light variable winds through the day as an east Pacific ridge builds inland to the north while a weak trough lingers just to the south. Expect increasing northwest winds beginning late tomorrow and lasting through the weekend as the ridge strengthens further. $$

Today
W winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 11 seconds. Patchy fog in the morning.
Tonight
SW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 13 seconds. Patchy fog after midnight.
Fri
SW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 12 seconds. Patchy fog in the morning.
Fri Night
SW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 12 seconds. Patchy fog after midnight.
Sat
W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 11 seconds. Swell S 3 ft. Patchy fog in the morning. Patchy fog after midnight.
Sun
S winds 5 to 15 kt. Wind waves 1 to 3 ft...becoming 2 ft or less. NW swell 6 to 8 ft. Patchy fog.
Mon
SW winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft. Patchy fog. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...combined seas 3 to 4 ft with a dominant swell period of 10 seconds. across the bar...combined seas 4 to 5 ft with a dominant swell period of 10 seconds. Maximum ebb current of 0.8 knots at 12:24 pm thursday and 1.8 knots at 12:18 am friday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Combined seas 3 to 4 ft with a dominant swell period of 10 seconds. ACROSS THE BAR...Combined seas 4 to 5 ft with a dominant swell period of 10 seconds. Maximum ebb current of 0.8 knots at 12:24 PM Thursday and 1.8 knots at 12:18 AM Friday.
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ABOUT THIS FORECAST

Last Update: 253 AM PDT Thu Aug 17 2017
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