Wednesday, October 7, 2009

The forecast for Western/Northwestern WI.

Forecast problems..Well not really problems more so concerns....First off the bat is precip chances,2 out of the gates would be the cold air forecasted to make camp over the area with killing freeze for areas that have not had their killing freeze as of yet...Ok lets try to hash all this out....

CURRENT CONDITIONS....

****No time for current conditions****

SFC ANALYSIS....

This morning we see the 990 MB low pressure now centered over Lake MI..Weak area of high pressure is building into the FA...Also our next storm system is poised just to the NW over Canada with it's attending cold front...What is interesting and could play heck with this forecast is a cut off low pressure over Southern CA ....Will this system merge with a system to form over CA...That is the big question....

TODAY THROUGH TONIGHT.....

We should see this big yellow thing in the sky,don't be alarmed it's just the sun,something we have not see in some time...WAA has already started to kick in with that said today should be warmer than we have see....Temps under partly cloudy skies today should range from the middle 50s North to around 60 in my Southern zones....Lows tonight fall back into the upper 30s to around 40 through out the entire forecast area...

THURSDAY THROUGH FRIDAY....

Cold front is forecasted to race from Western MN into the FA by late Wed night/early Thur morning...Moisture is null with this frontal boundary...Best lift is well North into Northern MN and Canada...So just look for a partly sunny skies through this time frame...Highs on Thur shall range from the upper 40s North to to around 50 Central then bringing up the rear middle 50s South...Computer models do try to bring some rain into the Southern areas along the cold front as some moisture does make it into them areas...So should see cloudy skies down there with a small chance at a few showers,as the upper level low over CA pushes into the Southern Rockies this is forecasted to phase with the system mainly over the Southern FA...We will have to watch this in case rain chances may be needed into my Central areas,for now will them dry...Lows on Thur night fall into the lower 30s up North/Central to the middle 30s South....

FRIDAY NIGHT THROUGH SATURDAY....

A 1022 MB high pressure will be building into the area for Friday so look for a for Mostly to partly sunny skies through out the whole FA..High on Friday will be cold temps in the middle 40s North/Central to upper 40s in my Southern areas....Friday night shows another system/tof moving SE through Canada ...This will be the next shot colder air to over take the FA....Heights do drop off,as colder air makes into the mid-levels....Very cold air to follow this trof/cold front..850 MB temps drop into the range of -8 to 10 or so...GFS/ECMWF not as happy about snow chances as they were,however NAM is more happy about it...Have decide to stay on the same page with snow chances on Friday night into Saturday morning....Will run with all snow as mid/upper levels would support this...Ground temps still warm so no accumulations are forecasted,However would not be shocked to see a few reports of dusting of snow on cars..Either way the whole FA stands a chance at seeing their first snowflakes of the fall...Lows on Friday night fall into the middle to upper 20s across the North...Central areas fall into the middle to upper 20s,while my Southern areas drop into the upper 20s to around 30....Saturday...Will run with moistly sunny skies up North..Central and Southern areas will run with morning light snow.flurries...Highs on Sat will be cold Lower 40s North and Central with middle 40s South...Would not be shocked to see temps stay in the 30s North and Northern parts of the Central areas...Lows Sat night fall into the middle to upper 20s through out the entire FA....