Area Forecast Discussion
Issued by NWS St. Louis, MO

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

000
FXUS63 KLSX 252032
AFDLSX

Area Forecast Discussion
National Weather Service Saint Louis MO
232 PM CST Sun Feb 25 2018

.SHORT TERM...  (Through Late Monday Afternoon)
Issued at 230 PM CST Sun Feb 25 2018

Weak surface ridge to slowly slide off to the east through Monday.
In the meantime, an upper level shortwave will under cut the ridge.
However, moisture will be limited so will just see some mid and high
clouds move through tonight. As for temps, lows tonight will be in
the upper 20s to mid 30s. On Monday, warm southerly winds to return
to the region with temps warming up into the upper 50s to low 60s.

Byrd

.LONG TERM...  (Monday Night through Next Sunday)
Issued at 230 PM CST Sun Feb 25 2018

Dry and mild weather to persist through Tuesday with highs by
Tuesday in the low to mid 60s.

Wet pattern to return to region beginning Tuesday night. First in a
series of shortwaves to lift out of the southwestern US into region.
Instability will be limited with just some isolated thunder for
central and southern portions of forecast area through Wednesday
morning, then precip to briefly taper off during the afternoon
hours.

Precip chances ramp back up by Wednesday night as main upper level
shortwave over SW US begins to lift northeast towards region. 12z
GFS and ECMWF remain in decent agreement with associated surface low
moving into central MO by 06z Thursday and rapidly deepen as it
slides northeast through area. Low to quickly drag cold front
through area by midday Thursday with showers and a few thunderstorms
coming to an end. With such deepening of surface low, will see
northwest winds pickup on backside of system. Still possible that we
could get some wrap around precip as well, but for now models are
indicating activity will be just northeast of forecast area.

Beyond that, dry and mild weather for next weekend.

Byrd
&&

.AVIATION...  (For the 18z TAFs through 18z Monday Afternoon)
Issued at 1232 PM CST Sun Feb 25 2018

VFR conditions to persist through forecast period with southwest
winds diminishing and backing to the south.

SPECIFICS FOR KSTL:
VFR conditions to persist through forecast period with southwest
winds diminishing and backing to the south.

Byrd
&&

.PRELIMINARY POINT TEMPS/POPS...
Saint Louis     36  60  39  64 /   0   0   0   0
Quincy          31  58  36  62 /   0   0   0   0
Columbia        32  60  37  64 /   0   0   0   5
Jefferson City  32  61  37  66 /   0   0   0   0
Salem           34  59  36  63 /   0   0   0   0
Farmington      33  60  36  63 /   0   0   0   0

&&

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

$$
WFO LSX



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.