Heavy Lake Effect Snow and Bitterly Cold Temperatures
A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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19NM S San Francisco CA
Marine Point Forecast[NOTICE]
Last Update: 2:24 am PST Feb 11, 2016
Forecast Valid: 12pm PST Feb 11, 2016-6pm PST Feb 17, 2016
NORTHWEST WINDS WILL INCREASE THROUGH THE WEEKEND WITH THE EXCEPTION OF THE NORTHERN OUTER WATERS WHERE SOUTHWEST WINDS WILL PREVAIL. A LARGE LONG PERIOD NORTHWEST SWELL WILL BEGIN TO MOVE INTO THE AREA TODAY AND PERSIST INTO THE WEEKEND. THIS LARGE SWELL WILL RESULT IN VERY LARGE BREAKING WAVES NEAR OFFSHORE REEFS AND SAND BARS.
.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...COMBINED SEAS 4 TO 6 FEET AT 12 SECONDS...INCREASING TO 6 TO 8 FEET AT 20 SECONDS. ACROSS THE BAR...COMBINED SEAS 5 TO 7 FEET AT 12 SECONDS... INCREASING TO 7 TO 9 FEET AT 20 SECONDS...OCCASIONAL BREAKERS TO 15 FEET BEGINNING THIS EVENING. MAXIMUM EBB CURRENT OF 3.1 KNOTS AT 06:13 PM THURSDAY THIS EVENING AND 3.1 KNOTS AT 06:43 AM FRIDAY MORNING.
- This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
- The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.