Periods of wintry precipitation are possible for the mid state
through Monday...
A surface low pressure system over southeastern TX will organize
and track eastward along the Gulf Coast through Saturday. Moisture
will be lifting northward and will be interacting with colder air
over middle TN. The first bout of wintry precipitation will occur
tonight and early Saturday across northern portions of the area,
generally to the north of I-40. A mixture of sleet and snow is
expected. However, amounts will be light and little if any
accumulation is expected. Further south, the precipitation should
fall as rain, primarily.
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A better chance of mixed precipitation will occur Saturday night
across the northwest third of the mid state as well as far
northern areas including the northern Plateau. Rainfall across
this area will change to a mixture of freezing rain and sleet. Ice
accumulation of less than one tenth of an inch is possible.
Further south, the precipitation should fall as rain. The mixed
precipitation will continue into early Sunday morning.
On Sunday night, our cold air depth will begin to increase as an
upper level slug of energy dives southeastward from the mid west.
This will bring a chance of some snowfall to the area. Amounts of
1/2 inch to 1 inch will be possible, with the best chance
occurring to the east of I-65, and in particular the Cumberland
Plateau region.
Note that there is still a great deal of uncertainty with this
winter weather scenario
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