Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 281720
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
1220 PM CDT Mon Jul 28 2014

.SHORT TERM: (Today and Tonight)
Issued at 300 AM CDT Mon Jul 28 2014

Surface high pressure currently centered in the northern Plains
will continue to settle southward through the Nation`s midsection
today bringing the first in a string of days of below average
temperatures. There should be a good blow-up of diurnal cu beginning
around mid-morning and dissipating by early evening. Baring some
persistent and unexpected patches of clouds overnight like those
currently across MN, most locations should fall into the 50s for
lows.

Glass

.LONG TERM: (Tuesday through Sunday)
Issued at 300 AM CDT Mon Jul 28 2014

The long wave trof over eastern NOAM will persist with varying degrees
of intensity through the end of the week and into the weekend ahead,
maintaining below average temperatures across the region. Surface
high pressure will continue to dominate on Tuesday although in a
weakening state. Cooling aloft could produce enough instability
for some spotty diurnal showers, however my confidence is not
great enough to mention in the forecast. The surface pressure
pattern during the later half of the week will largely be
dominated by weak high pressure although there could be subtle
wind shifts/pressure trofs passing southward associated with weak
disturbances in the NNW flow aloft. Any precipitation will be
quite spotty and mainly diurnally driven with probabilities too
low to mention, until Friday/Saturday when the odds are slightly
higher. The main baroclinic zone and threat of organized showers
and thunderstorms will remain well southwest/south of the CWA.

Glass

&&

.AVIATION:  (For the 18z TAFs through 18z Tuesday Afternoon)
Issued at 1206 PM CDT Mon Jul 28 2014

Hi pressure will control the weather through Tuesday. VFR flight
conditions and northwest flow will prevail. Expect this
afternoon`s ceilings to clear out by early this evening. Scattered
clouds will likely return Tuesday.

Specifics for KSTL:

VFR flight conditions and northwest flow is expected to continue
through Tuesday. Expect this afternoon`s ceilings to dissipate by
early evening.  Scattered clouds will likely return Tuesday.

Carney

&&

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

$$

WFO LSX






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