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September 19, 2012

Second surge of cold air / frost/freezes and severe weather

by craig1
  • Frost/Freezes for Upper Midwest and Great Lakes
  • Scattered flurries for northern Minnesota
  • Possible severe thunderstorms for the northeastern United States
  • Cooler High Temperatures from the northern plains east to the northeast

GFS valid Saturday;

NAM valid Saturday;

 

As you can see both models have a rather strong trough digging south into the upper midwest and Ohio Valley with the 850mb freezing lining through northern Iowa. Area’s north of that are expecting to see frost/freezes Friday and Saturday night mainly from northern Iowa and southern Wisconsin on north. Also another thing to note that more thunderstorms will be likely across the northeastern United States along the rather strong cold front. Once again severe thunderstorms capeable of damaging winds will be most likely.

Temperatures Friday Night;

Saturday Night Temps;

 

So until next time…….have a great day!

-Craig

 

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