National Weather Service United States Department of Commerce

Severe storms and heavy rain possible from parts of Plains to Great Lakes on Labor Day

Isolated severe thunderstorms are forecast to develop on Labor Day along and ahead of a cold front from parts of the southern Great Lakes southwestward across Illinois and Missouri into southeast Kansas. Damaging winds, large hail and heavy rainfall will be possible with these storms.
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Last Update: 820 PM PDT SUN AUG 31 2014

View Nearby Observations

Pt. Piedras Blancas to Pt. Sal From 10 NM to 60 NM

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...



  • SynopsisAT 03Z...OR 8 PM PDT...A 1026 MB SURFACE HIGH PRESSURE SYSTEM WAS LOCATED ABOUT 1000 NM W OF PORTLAND AND A 999 MB THERMAL LOW WAS CENTERED SOUTH OF LAS VEGAS. THIS PATTERN WILL RESULT IN MODERATE TO STRONG NW FLOW ACROSS THE OUTER WATERS AND THE NEAR SHORE WATERS NORTH OF POINT CONCEPTION THROUGH AT LEAST LATE TONIGHT. LIGHTER WINDS ARE THEN EXPECTED FOR THE REST OF THE WEEK.
  • Tonight NW winds 20 to 25 kt with gusts to 30 kt...becoming 10 to 20 kt with gusts to 25 kt late. Combined seas 7 to 9 ft dominant period 8 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
  • Mon NW winds 15 to 25 kt in the morning...becoming 10 to 20 kt with local gusts to 25 kt in the afternoon. Strongest western portion. Combined seas 6 to 8 ft dominant period 8 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
  • Mon Night NW winds 10 to 20 kt with local gusts to 25 kt becoming 10 to 15 kt after midnight. Wind waves 2 to 4 ft. NW swell 3 to 4 ft at 9 seconds. Patchy fog after midnight.
  • Tue NW winds 5 to 10 kt...becoming 10 to 15 kt with local gusts to 20 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
  • Tue Night NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 9 seconds. Patchy fog after midnight.
  • Wed NW winds 5 to 10 kt...becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog in the morning.
  • Wed Night W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog after midnight.
  • Thu W winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
  • Fri W winds 5 to 15 kt. Wind waves 2 ft or less. Mixed swell NW 4 ft and S 3 ft. Patchy fog.



Additional Forecasts and Information

Zone Area Forecast for Pt. Piedras Blancas to Pt. Sal From 10 NM to 60 NM
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