The Seasons First Upper Level Low

Our first Fall/winter ULL system will become cuttoff and park itself over the Ohio Valley region towards the end of the week. If it were later in the season this would have been a snow maker in the TN valley region, but since it's still early fall and temps are still relatively mild.... we will have to settle for the beneficial rain.

I do expect some exciting weather out of this system somewhere in the eastern US.... but as with all upper level systems, trying to pin that down will drive you nutty. I wouldn't rule out a strong to severe T-storm somewhere in the TN valley but with the packed in cloud cover...this system will be nothing to write home about.

After this stubborn ULL pulls away, the troff over the eastern US will deepen and temps will begin to fall with the NW flow winds becoming dominant. Might have to break out a jacket for the first time this season... as lows could briefly drop down into the high 40's in the east TN valley and low 40's to high 30's in the higher elevated areas... if skies become clear enough for radiational cooling to take place.

Toot