National Weather Service United States Department of Commerce

Severe weather expected for Upper Midwest on Wednesday

A potent storm system will bring a chance of severe thunderstorms to parts of the Upper Midwest on Wednesday and Wednesday night. Very large hail, damaging wind gusts, tornadoes and heavy rain are possible with these storms.
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Last Update: 905 PM PDT TUE SEP 2 2014

View Nearby Observations

Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH LATE WEDNESDAY NIGHT...


  • SynopsisPZZ400-031015- 905 PM PDT TUE SEP 2 2014 SYNOPSIS FOR NORTHERN CALIFORNIA WATERS NORTHERLY WINDS AND SEAS WILL CONTINUE TO INCREASE OVER THE NEXT COUPLE OF DAYS AS THE OFFSHORE HIGH PRESSURE RIDGE STRENGTHENS AND THE INLAND THERMAL LOW PRESSURE TROUGH INTENSIFIES. WINDS AND SEAS WILL BE HIGHEST ACROSS THE OUTER WATERS WHERE A PERIOD OF GALES WILL PERSIST THROUGH EARLY THURSDAY. $$
  • Tonight N winds 10 to 20 kt. Gusts to 35 kt near pt st george. Waves NW 11 ft at 10 seconds. Patchy fog.
  • Wed N winds 15 to 25 kt. Gusts to 35 kt near pt st george. Waves NW 11 ft at 10 seconds...and SW 2 ft at 14 seconds.
  • Wed Night N winds 15 to 25 kt...easing to 10 to 15 kt. Waves NW 13 ft at 10 seconds.
  • Thu N winds 5 to 10 kt. Waves NW 9 ft at 10 seconds.
  • Thu Night W winds 5 to 10 kt. Waves NW 8 ft at 9 seconds.
  • Fri NW winds up to 5 kt. Waves NW 6 ft at 9 seconds...and W 2 ft at 17 seconds.
  • Sat NW winds 5 to 10 kt. Waves NW 5 ft at 8 seconds...and SW 2 ft at 18 seconds.
  • Sun NW winds 5 to 15 kt. Waves NW 7 ft at 8 seconds...and SW 2 ft at 16 seconds.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm
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