National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS63 KLSX 041706
AFDLSX

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
1106 AM CST Tue Mar 4 2014

.SHORT TERM:  (Through Late This Afternoon)
Issued at 248 AM CST Tue Mar 4 2014

Weak shortwave to exit region this morning with most of energy
skirting to our north. Clouds associated with shortwave to move out
by midday most locations. However, as next system approaches, mid
and high clouds to begin returning to the region late this
afternoon. As for highs today, slow warmup to persist with highs in
the 30s.

Byrd

.LONG TERM:  (Tonight through Monday)
Issued at 248 AM CST Tue Mar 4 2014

00z model runs a bit slower with next system, so backed off on
pops even more for tonight as well as on Wednesday. Best chances
on Wednesday will be over northeast MO and west central IL. Then
as system slides through Wednesday night, light snow to spread to
the south and east but best chances remain over central/northeast
MO as well as west central IL. System to continue weakening and
exiting forecast area by daybreak on Thursday.

Lows tonight will be in the low teens to low 20s with the coldest
temps over the eastern Ozarks where there is still some
ice/sleet/snow cover. Highs on Wednesday will be in the low 30s to
low 40s and lows Wednesday night will be in the upper teens to mid
20s.

Slow warming trend to persist as southerly flow returns to the region
with highs warming up into the mid 40s to mid 50s by Friday.

Next weather system to move in Friday night and persist through
Saturday before tapering off Saturday night. With the warmer
temperatures over the region, precipitation will be a mix of rain
and snow. Temperatures will drop off a little on Saturday but remain
in the mid 30s to upper 40s.

Then surface ridge builds in drying things out for the last half of
the weekend and into early next week. Temperatures to rebound once
again and will be in the 50s by Monday.

Byrd

&&

.AVIATION:  (For the 18z TAFs through 18z Wednesday Afternoon)
Issued at 1102 AM CST Tue Mar 4 2014

VFR through the period with increasing coverage of mid and high
clouds ahead of an approaching shortwave. Just beyond the end of
the valid TAF period, some light snow across southern IA and
central IL could clip KUIN. Southerly winds become easterly
towards the end of the valid TAF period.

Specifics for KSTL: VFR through the period with increasing
coverage of high clouds ahead of an approaching shortwave.

Kanofsky

&&

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

$$

WFO LSX