What a nice day it was! Highs in the 50s made for another Spring preview day around the region, but don't expect anymore of those for a while. As a disturbance passes well to our north tomorrow, cooler air will filter in. We won't even reach 40 degrees tomorrow, so it's time to get those heavy coats out again, just in time for New Year's Eve! A little snow is possible on Thursday night, but I'm hard pressed to find good moisture to support more a bit of snow shower activity. Any lingering moisture on Friday morning could change to rain.
The next major chance of precipitation happens on Saturday night into Sunday as a low passes to our south. This will most likely be all rain because of warm air coming up from the Gulf. There's a possibility that we could see a brief changeover to snow on the very tail end of this system, but I'm not banking on that with the current moisture allotment on the GFS.
Now, to the good stuff. Over the course of today, the GFS has had an area of low pressure tracking through Central Kentucky on Tuesday, giving us rain with a little snow on the backside. With each consecutive run of the model today (0z, 6z, 12z, and 18z), the track has been shifting eastward. The most current run, the 18z, has this low going far enough east to give us a snowstorm. While this is exciting, I still want to see a consistency before I rest on a snow solution. If the next 0z and 6z models have the track that the 18z had, then I'm game. With so much cold air coming in to the region due to a ridge developing over Greenland, it'll be interesting to see how the models handle this system this week into this weekend. In any case, get ready for the coldest air we've seen in quite some time as that Greenland ridge allows a polar vortex to drop into the Eastern US next week.
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