Thursday, November 3, 2011

Rain and Storms to Move in for Later Today. Another Cooldown for the Weekend

Our vigorous storm system is currently crossing MO with an attending cold front.  As the day progresses, it will gradually become cloudy with showers moving into the region later today with some potential for thunderstorms as we are dealing with plenty of low level convergence/ upper level jet divergence and plenty of moist flow to work with.  Considering the combination of some instability, healthy low level shear, and the focus area for the development of a triple point system, the system can make for what could be a QLCS type of setup during the early morning period.  In this case, this does mean that any storms that do develop have the chance to get a bit of an attitude with a few isolated tornadoes possible but I'm not expecting this to be anything major.  If one were to spin up, it will likely be quite weak and short-lived.  As the cold front passes during the early part of Friday, backside moisture with significant cooling could allow some snow to fall at the highest peaks across the Apps.  Eventually the upper level low that will be sitting on top of the Carolinas will pull away with the surface low and cold front later Friday and allow clearing to kick in.

Ridging will build in as we get into early next week, pushing our temperatures slightly above normal regarding highs (thinking mid 60s to around 70).  Back west, another system will develop and appears that it may be in similar fashion to the one that's getting ready to come through the Southeast.  Surface cold front with plenty of low-level shear and low instability but this appears to have a better chance to produce some severe weather across the MS Valley and areas east, dumping a good bit of rain for the folks over there.  Timing will need to be watched and see if that can materialize successfully  That should progress over to our area during the mid period next week and bring with it more chances for showers and thunderstorms.  Ahead of the front, highs will continue to range in the 60s to around 70, maybe low 70s for some. 

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