Area Forecast Discussion
Issued by NWS Huntsville, AL

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FXUS64 KHUN 301734 AAC

Area Forecast Discussion...UPDATED
National Weather Service Huntsville AL
1234 PM CDT Fri Sep 30 2016

For 18Z TAFs.


(Issued 1036 AM CDT Fri Sep 30 2016)
The Tennessee Valley continues to remain in a fairly stagnant
synoptic weather pattern. Weak ridging continues closer to home over
much of Alabama. A potent and large upper low continues to rotate
over portions of the Ohio Valley. Unfortunately, the center of the
upper low (thus the stronger lift/more concentrated/deeper moisture
and rainfall) is well north of Southern Middle TN and northern
Alabama. We will see low clouds continue before lifting around noon
or 1 pm, but mostly cloudy conditions should hang around though in
Southern Middle Tennessee this afternoon. However, no precipitation
is expected.

Temperatures, especially west of a line from Winchester to Cullman,
are 2 to 4 degrees cooler than yesterday at 10 am. This is mainly
due to the low clouds that continue and fog earlier this morning. In
addition, low level cold air advection is in place and models
forecast this to continue as the upper moves slightly further east
today. Therefore, lowered high temperatures into the 66 to 72 degree
range, with higher temperatures in northeastern Al (less cloud


For 18Z TAFs: Closed upper level low pressure system over cntrl KY
continues to usher lower MVFR cloud heights ewd across the area this
early Fri afternoon. This system though will gradually lift to the ne
heading into the early evening hrs, thereby allowing cloud bases to
climb just above VFR levels. With just a few/sct mid/high lingering
clouds in place well into the early morning period, VFR conds look
to prevail for the remainder of the forecast period, as sfc flow
becomes predom light/var.





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