Area Forecast Discussion
Issued by NWS Kansas City/Pleasant Hill, MO

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059
FXUS63 KEAX 010746
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
246 AM CDT SUN MAY 1 2016

.Discussion...
Issued at 245 AM CDT SUN MAY 1 2016

Upper-level low pressure continues to spin across the Central Plains
this morning...with latest surface obs showing an inverted trough
extending northwest across our area from parent low pressure now
centered just north of STL. Fcst models all in general agreement
that lgt shwrs will develop later this morning as weak frontogenesis
combines with increased forcing for ascent as the upper low inches
closer to the area. Best chances for measurable precip will reside
along and north of Route 36 based on expected frontogenesis
maximum...however a few stray shwrs down to I-70 cannot be ruled out
completely. In any event however...all precip should remain light
considering the absence of any instability. As this upper low tracks
east...expect developing cold air advection today as flow becomes
more northwesterly as the day progresses. This combined with abundant
cloud cover should lead to noticeably cooler temps today with many
places north of I-70 struggling to reach the 60 degree mark. Precip
chances should come to an end by late this afternoon with a return of
dry weather overnight as weak sfc high pressure temporarily noses
into the area. Overnight lows should fall into the lower to middle
40s across much of the forecast area.

Weak wave now seen over the Desert Southwest will lift northeast
through the day on Monday...with continued cold temps aloft
combining with weak synoptic scale forcing to result in instability
shwrs once again. For now...best area of concentrated rainfall will
reside well south across Arklatex region which will be better
positioned for Gulf moisture entrainment. Regardless...model signal
has been consistent in recent days and a slgt chc mention seems
warranted. Pretty much the same story on Tuesday as another weak wave
passes south over the area in northwest flow aloft. Instability shwrs
again look possible across the eastern zones and have added a slgt
chc mention for now.

Beyond this...a period of dry weather can be expected through the
duration of the work week as a strong omega block develops across the
Nation`s Heartland. From this vantage point...hard to believe much in
the way of any significant precip can be expected through the start
of next weekend as riding takes up position directly over the Plains.
With heights building aloft...expect a warming trend with mid/upper
70s likely both Saturday and Sunday. Along with the warmer
temps...latest model runs hint the strong ridge will begin to
breakdown by Saturday as weak shortwave energy begins sliding through
the upper Miss Vly. This could result in developing shwrs/storms
both Saturday afternoon and Sunday.

&&

.Aviation...(For the 00Z TAFS through 00Z Sunday Evening)
Issued at 627 PM CDT SAT APR 30 2016

VFR conds will prevail thru tonight will sct-bkn cigs around 4kft.
Tomorrow morning a sfc trof will sink thru the terminals bringing
MVFR cigs btn 1-2kft. The NAM also suggests the potential for fog
reducing vsbys to 1-2SM however, it is the only model that does so.
Consequently, have kept fog formation out of the TAF at this time
but will continue to monitor. MVFR cigs will lift to 2-3kft around
17Z-19Z with the potential for further lifting to low-end VFR by the
end of the TAF pd. Winds will be out of the west blw 10kts thru
tomorrow morning before veering to the NW around 10kts tomorrow
afternoon.


&&

.EAX Watches/Warnings/Advisories...
KS...None.
MO...None.
&&

$$

Discussion...32
Aviation...73



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