Sunday, December 14, 2008

***Major Winter Storm***

I used my AFD as it will be easier on me...


Once again this AFD will focus on the major winter storm plowing through the area...No time for longer term forecast discussion...
Current Conditions.
Wide range in temps this morning...Single digits in Far Northwestern and Western part of our MN area...With 20s and 30s across the rest of the FA....Rain/sleet in our far Southern areas this early morning...Snow across the rest of the area...Short on the current conditions....
SFC Analysis...
991 area of low pressure over Southwest IA with a cold front bisecting the FA..For the most part the front is through our MN FA...The front is now just pushing into our Northwest areas of WI...
Today through tonight...
The deep low pressure is forecasted to move into South Central/Northern IA this morning by 18z today the low is forecasted to be over Southeast MN by 00z Monday the low is forecasted to be over North Central WI...The low is tapping plenty of Gulf Moisture Which is evident on the WV...The Low will slam a cold front through our WI FA today...Temps will drop through out the day across the whole FA,already showing that in the SFC OBS this morning.....The NWS has issued a winter storm warning for the rest of WI FA...The Counties now in the warning are,Burnnett,Washburn,and Sawyer...Just as I thought yesterday...I still think Polk,Barron,and Rusk Counties will see more snow than I have forecasted attm...Cold air aloft has been hanging on rather strong across these areas,Though SFC temps did get warmer yesterday than I though...With SFC temps forecasted to fall through out the day,and the storm track just to the South than just to the East of the said Counties...I would except to more snowfall here...Right now I have a total forecasted snow/sleet amounts of 2 to 5 inches...Thinking is that is on the low side....Rest of the WI and MN FA will get plowed with snow amounts from 8 to 19 inches...I would not be shocked to see some 2 foot reports...Winds are going to become a problem as pressure gradients increase...Winds today through tonight should be in the 15 to 25 MPH range with gusts from 30 to 40 MPH...This will cause blowing and drifting on the snow...Blizzard conditions will be a thing we will have to watch for...Windchills will be getting out of hand also...