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FXUS63 KEAX 011126

626 AM CDT Mon Sep 1 2014

Issued at 351 AM CDT MON SEP 1 2014

A line of storms and trailing stratiform will continue to shift east
this morning, and should generally clear out of the northern 2/3rds
of the forecast area shortly after sunrise. The southern edge of the
line may trail a bit along the northern edge of the low level jet,
possibly allowing showers and storms to linger along our southern
border through late morning.

This morning`s storms will most likely leave one or more outflow
boundaries across central MO for this afternoon, and the synoptic
cold front currently in southeast Nebraska will also drift southward
today and stall north of the Ozarks. These boundaries could serve as
a focus for afternoon convection, especially as a weak shortwave
trough passes overhead during the afternoon and early evening hours.
The strength of any storms that develop will depend on how much
clearing occurs and thus how much instability can build today, but
at least a few strong to severe storms are possible along the cold
front or any of the lingering outflow boundaries, mainly south of
I-70. Deep layer shear values will increase into the 40-50 kt range
by mid afternoon across central MO, supporting organized convection
should any robust updrafts develop in our CWA. Damaging winds and
large hail are both possible with any stronger storms that develop.
As the shortwave trough pushes southeast later this afternoon into
the evening, the cold front and any other lingering boundaries will
be driven southeast out of the forecast area for the later evening
and overnight hours.

Quiet conditions and near to slightly below normal temperatures are
expected for Tuesday with the front remaining south of the forecast
area; however, developing lee side low pressure and resultant south
southwest flow at low levels will help drive the boundary back north
for Wednesday, bringing another chance of scattered storms and above
normal temperatures back into the CWA. Strong/severe storms are not
expected due to lacking focus for convection and fairly weak flow

Warm temperatures will continue for Thursday, then a much stronger
cold front is expected to dive southward into the region on Friday
or Friday night. Showers and storms are expected from late Thursday
night through Saturday morning in association with this system, and
temperatures should drop significantly by the weekend in its wake.
Highs Saturday and Sunday may only top out in the mid 70s as 850
temperatures drop into the 7 to 10 C range, and dry conditions are
anticipated behind the front for the remainder of Saturday through
the end of the forecast period.


.AVIATION...(For the 12Z TAFS through 12Z Tuesday Morning)
Issued at 626 AM CDT MON SEP 1 2014

Showers and isolated thunderstorms will gradually exit the area over
the next few hours, and associated 10-12 kft ceilings will follow
behind by late morning to early afternoon. Scattered to broken
stratus with bases around 1500 ft across far northwest MO will also
slide east and gradually mix out this morning, possibly impacting
KSTJ but likely staying north of KMCI and KMKC. Otherwise, scattered
cumulus with bases around 3-4 kft will develop this afternoon, and a
few scattered storms are possible across central MO during the late
afternoon and evening hours. Most storms should stay south of the
terminals, but a stray storm may develop in the vicinity of KC. Winds
will gradually turn to the west and then northwest before becoming
light and variable this evening, and some patchy fog is possible by
early Tuesday morning especially at KSTJ.





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