Severe Thunderstorm Threat Increasing This Week from the High Plains to Gulf Coast

A storm system will move from the Rockies to the East Coast during the next several days bringing a severe thunderstorm threat to many parts of the nation. On Thursday, large hail will be the main threat in the High Plains. By Friday a more widespread threat will develop in the ArkLaTex region where damaging winds, very large hail and tornadoes will be possible.
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Last Update: 847 PM PDT WED MAR 22 2017

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23NM SSW San Francisco CA

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT THURSDAY...

Synopsis: GREATER FARALLONES...AND CORDELL BANK NATIONAL MARINE SANCTUARIES...

HIGH PRESSURE OFF THE SOUTHERN CALIFORNIA COAST WILL WEAKEN TONIGHT RESULTING IN DECREASING NORTHWEST WINDS. THE WINDS WILL BECOME SOUTHERLY AND INCREASE ON THURSDAY A AHEAD OF THE NEXT SYSTEM. WINDS WILL INCREASE DURING THE DAY THURSDAY. WINDS WILL SWITCH TO THE NORTHWEST FRIDAY BUT ANOTHER SYSTEM MAY IMPACT THE WATERS ON SUNDAY.

Tonight
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 13 seconds.
Thu
W winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 to 9 ft at 13 seconds.
Thu Night
S winds 5 to 15 kt...increasing to 15 to 25 kt after midnight. Wind waves 4 to 6 ft. W swell 3 to 5 ft at 13 seconds. Slight chance of rain in the evening, then chance of rain after midnight.
Fri
S winds 20 to 30 kt. Wind waves 5 to 7 ft. W swell 5 to 7 ft at 15 seconds. Rain.
Fri Night
W winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 6 to 8 ft at 14 seconds. Rain likely in the evening, then slight chance of showers after midnight.
Sat
NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 6 to 8 ft.
Sun
W winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 6 to 8 ft. Showers likely, then chance of showers.
Mon
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 6 to 8 ft. Chance of showers. .....san francisco bar/fourfathom bank forecast..... in the deep water channel...combined seas 7 to 9 ft with a dominant swell period of 12 seconds. across the bar...combined seas 8 to 10 feet at 12 seconds. Maximum ebb current of 0.6 knots at 12:36 am thursday and 1.4 knots at 12:00 pm thursday.
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ABOUT THIS FORECAST

Last Update: 847 PM PDT WED MAR 22 2017
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