Severe Storms Shift into the Lower Mississippi Valley and Lower Ohio Valley Monday

The focus for severe storms will shift to the Lower Mississippi Valley and portions of the Tennessee Valley and Ohio Valley Monday. Damaging winds, hail and an isolated tornado or two will all be possible. Elsewhere, a wintry mix will impact portions of New England while heavy rain and high elevation snow continue in the northwest U.S.
Read More...

Last Update: 254 AM PDT MON MAR 27 2017

View Nearby Observations

17NM SW San Francisco CA

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON PDT TODAY THROUGH

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

NORTHWEST WINDS WILL INCREASE THIS AFTERNOON THROUGH AT LEAST TUESDAY AS A STRONG SURFACE PRESSURE GRADIENT BUILDS ACROSS THE REGION. AT THE SAME TIME, A BUILDING NORTHWEST SWELL WILL PASS THROUGH THE WATERS. TYPICAL GUSTY SPRING TIME NORTHWEST WINDS WILL CONTINUE AT LEAST THROUGH MIDWEEK AND LIKELY THROUGH FRIDAY AS THE NEXT WEATHER SYSTEM WILL LIKELY INCREASE THE SURFACE PRESSURE GRADIENT ONCE AGAIN.

Today
NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 6 to 8 ft at 11 seconds.
Tonight
NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 9 to 11 ft at 11 seconds.
Tue
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 11 seconds.
Tue Night
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 9 to 11 ft at 13 seconds.
Wed
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 15 seconds.
Thu
NW winds 20 to 30 kt. Wind waves 4 to 6 ft. W swell 8 to 10 ft.
Fri
NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 8 to 10 ft. .....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 ft with a dominant swell period of 12 seconds. Maximum ebb current of 1.3 knots at 03:12 am monday and 1.7 knots at 03:18 pm monday.
  Click Map For Detailed Forecast

ABOUT THIS FORECAST

Last Update: 254 AM PDT MON MAR 27 2017
  Forecast Discussion
   

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data