Heavy Rain and Mountain Snow For the West Coast; Lake Effect Snow in the Great Lakes

A series of Pacific storms will deliver multiple rounds of heavy rain and mountain snow Wednesday into the Thanksgiving holiday weekend. There is an elevated concern for flash flooding, mudslides and debris flows near wildfire burn scars in California. A weak storm system will cross the Great Lakes Wednesday with accumulating Lake Effect snow.
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Last Update: 251 PM PST Tue Nov 20 2018

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19NM W San Francisco CA

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON...
Synopsis: PZZ500-211115- 251 PM PST Tue Nov 20 2018 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Southerly winds will steadily strengthen across the waters tonight into early tomorrow ahead of an approaching storm system. The strongest winds are expected to arrive in conjunction with the frontal passage through early Wednesday. Localized occasional gale force gusts will be possible near the frontal boundary. Winds ease Thursday but a different storm system will once again strengthen southerly winds Thursday night. Light mixed swell through the rest of the day, with a longer period northwesterly swell train arriving tonight into Wednesday. $$

Rest Of Today
SE winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 10 seconds and SW around 2 ft at 15 seconds. Hazy. A slight chance of rain.
Tonight
SE winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 1 to 3 ft at 17 seconds and SW around 2 ft at 14 seconds. A chance of rain.
Wed
S winds 15 to 25 kt with gusts up to 35 kt. Wind waves 4 to 7 ft. W swell 1 to 4 ft at 17 seconds and S around 2 ft at 14 seconds. Rain and a slight chance of thunderstorms.
Wed Night
SW winds 10 to 15 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 3 to 7 ft at 15 seconds and S around 2 ft at 12 seconds. Showers likely and a slight chance of thunderstorms.
Thanksgiving Day
SW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 14 seconds and S around 2 ft at 12 seconds. A chance of rain.
Thu Night
S winds 15 to 20 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 6 to 11 ft at 13 seconds and S around 2 ft at 12 seconds. Rain.
Fri
W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 11 ft and S around 2 ft. Rain.
Sat
NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 6 to 9 ft and S around 2 ft. winds and wind waves higher in and near thunderstorms. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...combined seas 2 to 4 ft with a dominant period of 11 seconds. across the bar...combined seas 3 to 5 ft with a dominant period of 11 seconds. Maximum ebb current of 1.7 knots at 02:25 am wednesday and 3.6 knots at 02:37 pm wednesday.
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Last Update: 251 PM PST Tue Nov 20 2018
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