Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 310731
AFDLSX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
231 AM CDT Sun May 31 2015

.DISCUSSION:
Issued at 226 AM CDT Sun May 31 2015

Area still under the influence of a broad upper level trof that
encompasses the center of the CONUS. This combined with cold
advection behind the front has left the area feeling more like early
spring rather than late May. General pattern trend the next few
days will be for the trof to cutoff into an upper level low as it
progresses into the southeast CONUS. Meanwhile, upper level
ridging will begin to build from the southern Plains into the
middle and upper Mississippi River Valley. So, after a cool and
cloudy day to end the weekend, temperatures will begin to slowly
moderate back to normal early next week. Above normal temperatures
are expected by the end of the week and next weekend. Chances of
precipitation should be limited until the end of next weekend when
the next cold front is progged by both the ECWMF and GFS to move
across the region.

CVKING

&&

.AVIATION:  (For the 06z TAFs through 06z Sunday Night)
Issued at 1056 PM CDT Sat May 30 2015

Most of the showers on the backside of the surface low over
southwest IN have dissipated, but drizzle was occurring across
much of the area late this evening.  At least patchy drizzle and
fog will continue late night, particularly for the St Louis metro
area. The cloud ceilings around 1000 feet will continue for the
late night and early morning hours, possibly dropping to around
500 feet. The cloud ceiling should rise into the MVFR catagory by
late Sunday morning. The gusty nly surface wind will veer around
to a nely direction by Sunday afternoon or evening as the surface
low moves northeastward into the OH Valley region with surface
ridging extending from the northern Plains and Great lakes region
south into MO.

Specifics for KSTL: Drizzle and fog along with cloud ceilings of
500-1000 feet will continue late tonight.  The cloud ceiling will
rise to around 2000 feet Sunday afternoon. The gusty nly surface
wind will veer around to a nely direction by Sunday evening. The
cloud ceiilng may lower to around 1000 feet Sunday night.

GKS

&&

.PRELIMINARY POINT TEMPS/POPS:
Saint Louis     67  54  71  58 /   5   5   5   5
Quincy          66  49  70  53 /   5   0   5   5
Columbia        66  52  70  55 /   5   5   5   5
Jefferson City  67  53  71  56 /   5   5   5   5
Salem           67  54  70  56 /  10  10   5   5
Farmington      66  52  69  54 /  10  10  10   5

&&

.LSX WATCHES/WARNINGS/ADVISORIES:
MO...NONE.
IL...NONE.
&&

$$

WFO LSX





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