Tuesday, February 24, 2009

Forecast

This forecast will focus on Thursday through Friday......
Possible winter storm moving towards the area....
Looking at the ECMWF/CEP model we see a 999 MB low forming over the CO area..This low is than forecasted to head Northeast into Southern WI/far Northern IL by late Thur/early Friday...Track of said low would bring in accumulating snows to my Central and Southern areas....However at the same time ECWMF/CEP is trying to build in a 1037 MB Arctic high pressure into the Northern and Central parts of the FA from Canada....The way it has been all winter if the push of Arctic air can be in place before said low moves Northeast,this shall help keep the low well to our South per Nam model,which I will talk about in awhile....Either way pressure gradients will tighten up between the high towards our North and the low towards our South/Southeast....Looks to be a wind producing system....
Looking at the GFS model...
GFS keeps the low a tad South of ECMWF/CEP model,also has said low much weaker like around 1005 MBS or so...Also has the high stronger around 1042 MBS.....GFS does see eye to eye with ECMWF/CEP on a wind producing system....
NAM model has the low Moving toward the windy City...Both Nam and GFS does paint some light QPF for the area....Winds also show up on NAM....So one thing models do agree on this system will be a wind jammer......What models don't agree on is where the snow band is going to set up as of right now...So if I was to put my neck on the chopping block I would say the Southern areas of the FA would have the best chance at seeing accumulating snows..Point South of Eau Claire....I still have time to watch this,as models get closer to latching onto the final track of said low pressure...Will update when I feel models are in a better agreement on this possible winter storm...Temps will be falling back to below norms right through Monday.....More detailed forecast on the cold temps tonight oe tomorrow morning.....