Area Forecast Discussion
Issued by NWS Springfield, MO

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FXUS63 KSGF 261720

1120 AM CST Thu Feb 26 2015

...18Z Aviation Update...

.SHORT TERM...(Today and Tonight)
Issued at 345 AM CST THU FEB 26 2015

After a brief respite from the cold weather, Arctic air has
returned with a vengeance behind a cold front that swept across
the area. Some very light snow or flurries and perhaps a brief
period of freezing drizzle was accompanying this intrusion of
Arctic air. A light dusting of snow of less than an inch is still
possible across central Missouri mainly from the Lake of the
Ozarks region into the eastern Ozarks.

Temperatures will continue to fall into the morning before
leveling off this afternoon. Afternoon temperatures will struggle
to reach 20 degrees. Lows tonight will tumble into the single
digits as the Arctic high builds southward. A steady northerly
wind tonight into early Friday will generate wind chills in the
single digits below zero and may approach 10 below.

.LONG TERM...(Friday through Wednesday)
Issued at 345 AM CST THU FEB 26 2015

Another very cold day is in store for Friday as the Arctic high
pressure system slides to the east. Highs again will struggle
again to climb above 20 degrees.

As been advertised an active weather pattern will develop this weekend
into early next week. The upper pattern will become more zonal as
an upper level trough takes shape out west. A series of disturbances
will eject eastward into the region Saturday and Sunday while a
frontal zone develops. Warm air advection pattern will evolve and
strengthen Saturday and Sunday which will bring gradual warming
initially above the boundary layer and eventually to the surface.

Expect precipitation primarily in the form of snow to develop from
west to east Saturday into Saturday evening. The snow will then
mix with or change to sleet and even some freezing rain later
Saturday night into early Sunday as the warm nose builds north. At
this time there is the potential for light accumulations of snow
and sleet along with minor ice accumulations. Current models prog
temperatures will climb above freezing across most if not all of
the area Sunday changing the precipitation over the rain and

Additional chances of precipitation will continue into early next
week as the upper level trough makes its way eastward. The extent
of warming and the resulting thermal profile remains in question.
However it appears that sufficient warming will take place to keep
most precipitation rain with an occasional wintry mix.

While the confidence level is high that we will see some wintry
weather this weekend there is considerable uncertainty on exact
precipitation types, amounts and timing of transitions. At this
time expect light accumulations of snow, sleet and possibly
freezing rain. This will likely impact travel by Saturday
afternoon into Saturday night and Sunday morning.

Please stay tuned to the latest forecast as we approach the


.AVIATION...(For the 18Z TAFS through 18Z Friday Afternoon)
Issued at 1115 AM CST THU FEB 26 2015

VFR conditions are expected through mid day tomorrow at all
terminals. High pressure will sink south-southeast across the
Missouri River Valley tonight, resulting in northerly winds
becoming northeast with time, and eventually easterly by mid day
tomorrow. Sct high level clouds will remain across the region,
with some mid level clouds beginning to move into far southwestern
Missouri by very late in the TAF period on Friday.




LONG TERM...Foster
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