856 
FXUS63 KLSX 041736
AFDLSX

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
1236 PM CDT Sat Apr 4 2020

.SHORT TERM...  (Through Late Sunday Afternoon)
Issued at 223 AM CDT Sat Apr 4 2020

Despite surface ridge building into the region today, post frontal 
showers will linger across portions of east central/southeast 
Missouri and southwestern Illinois, though rainfall amounts will be 
on the light side. Otherwise, it will be rather chilly with highs 
only in the upper 40s to mid 50s.

Surface ridge will be overhead tonight with partial clearing 
and another cold night in store with lows in the mid 30s to mid 40s.

Surface ridge will move off to the east on Sunday with warmer 
southerly winds returning to the region. Could see some sunshine 
with highs in the low to mid 60s.

Byrd

.LONG TERM...  (Sunday Night through Friday)
Issued at 223 AM CDT Sat Apr 4 2020

With decent upper level ridging overhead will see temperatures 
moderate through mid week. Highs will be in the 70s to near 80 
degrees Monday through Wednesday. Otherwise, still expect several 
rounds of showers and some storms across the region Monday through 
Tuesday night as a warm front lifts north across the area on Monday 
followed by a cold front that will move through by Tuesday night. 

Once cold front moves through, temperatures will be a bit below 
normal Thursday and Friday. As for precipitation chances, extended
models have some differences in timing, strength and placement 
with system that will finally eject out of the southwestern U.S. 
with several rounds of activity possible Wednesday night through 
Friday.

Byrd

&&

.AVIATION...  (For the 18z TAFs through 18z Sunday Afternoon)
Issued at 1220 PM CDT Sat Apr 4 2020

Low clouds with IFR/MVFR ceilings will continue to linger at all 
of the terminals through the afternoon into the early evening 
before ceilings finally improve to VFR by mid-late evening. 
Northerly winds are expected to become light tonight and veer 
easterly by tomorrow morning.

SPECIFICS FOR KSTL: 

Clouds with low MVFR clouds will continue to linger through the
afternoon before ceilings finally improve to VFR by mid evening.
There is some possibility that ceilings will fall below 1000FT 
AGL between 18-24Z this afternoon, though this risk was not high
enough at this point to include in the TAF. Northerly winds are 
expected to become light tonight and veer easterly by tomorrow 
morning.

Britt

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

$$

WFO LSX