Saturday, January 17, 2009

Updated forecast(longer term) Arctic outbreak on it's way once again!

This update forecast will talk about the upcoming Arctic blast along with a possible snow storm/blizzard....
This will focus on the time frame from Thursday through early next week,as I don't have time to go further out than that right now...
I have already been warning about this Arctic outbreak last week....At first models had the coldest part of the core more to the East/Northeast of the area...Sure it would have still been cold, but not as bad...However I have been noticing a change in each run...The GFS and ECMWF are showing more of a West and South ward trend with this...This would put the coldest core right back over the area..This Arctic out break looks to out last the one we are slowly getting out of.....If trend keep on like they have been this may be colder than the last one...One thing is for sure it looks to be just as cold,and lasting longer...

Now lets talk about a possible snowstorm/blizzard...First I will talk about each model...
Lets start of with ECMWF...Looking at the 00Z run we see the low pressure over Southern WI this would keep the heavy snow in my Central and Southern areas...However looking at the 12Z run...The low pressure is forecasted to move from ND/SD line toward the East/Southeast then Northeast along the Lake MI...This would keep the heavy snow in my Central and Northern areas as the track would work through the LA Crosse area then head Northeast towards Door County....
Lets look at the GFS model.....
Looking at the 06Z run we find the low pressure moving just North of the areas...Hence this will keep the heavy snow well North of the area....However looking at the 12z run...We find the low taken about the same track that the 12z ECMEF has...If that is the case, that would keep the heavy snow in the Central and Northern areas of the FA.....
It is way to early to even try to forecast amounts as this is into late next week.As one can see models still all over the place with this possible system...This is not written in stone in any shape or form...So this has a good chance of not happen either, however it will be something to watch over the next few days.....No matter what takes place the low will be a wind jammer and will also sever to draw more Arctic air back in place..We shall see the first Arctic front Thursday night...With temps going back below zero....

I just seen the Dultuth NWS is hinting at this also...