Sunday, December 7, 2008

First Winter Storm with limited Cold Air

The talked about Arctic outbreak and winter storm will be much weaker then feared. As the energy from the Northern Jet stream and Southern Jet Stream will not phase. This has been the norm for this Fall and if continues will help keep the brutal temperatures and significant snow storms away. With that being said there will be still be a pretty good low pressure that with form in Oklahoma on Monday and move northeast towards Illinois or Indiana by Tuesday night. This will produce lots of rain for the Southern Gulf states north to the Ohio Valley. Some severe weather will be possible Monday night and Tuesday across far southeast Texas into Louisiana and Mississippi. Snow will also begin to fly from the Texas Panhandle northeast to Missouri on Tuesday. Some areas of From the Oklahoma Panhandle throughout southern Kansas to NW Missouri could see 2-4 inches with isolated 6 inch amounts. As strong north winds 30-40mph pull in colder air as temperatures drop during the day. As the area of low pressure pulls to the north it will begin to weaken and become sheared out. So the precipitation will become lighter and scattered in nature towards the Ohio Valley. As with the track of the low pressure, plenty of warm will be drawn north keeping most of the precipitation across the area in the form of rain. Here is the latest GFS computer model for Tuesday Evening. Looking ahead the Arctic air continues to build off to the north but with the lack of blocking it will stay to the north over the next 7 days. So expect a relaxation of the cold air for the East and South this week. As the trough axis shifts from over the Ohio Valley to the west over the Rockies. Still believe towards Christmas the True Siberian Express comes down with one or two major winter storms ahead of the brutal cold air. Still lots of potential in this weather patter so stay tuned as the damn could break at anytime.

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