Area Forecast Discussion
Issued by NWS St. Louis, MO

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 49 50
FXUS63 KLSX 142322

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
622 PM CDT Wed Mar 14 2018

.SHORT TERM...  (Through Late Thursday Afternoon)
Issued at 221 PM CDT Wed Mar 14 2018

Surface ridge to move off tonight as frontal boundary sinks south
across region. Front to stall out just south of I-70 corridor late
Thursday. Dry and mild weather to persist through Thursday.

Lows tonight will be in the low 30s to low 40s. As for highs on
Thursday, will depend on where the frontal boundary is. For now have
highs ranging from the low 50s far north to around 70 far south.


.LONG TERM...  (Thursday Night through Next Wednesday)
Issued at 221 PM CDT Wed Mar 14 2018

With cold front stalled over southern Missouri Thursday night, will
see several rounds of showers and a few storms develop and spread
across region, especially during the day on Friday. Some mixed
precipitation is possible over northeast MO/west central &
southwestern IL Friday morning, but little or no accumulation
expected. The best chances for storms will be over portions of
central and southern Missouri. With the clouds, precip and position
of frontal boundary, temps will remain colder than normal on Friday
with highs only in the low 40s to mid 50s.

As system exits to the east early Saturday morning, precipitation to
come to an end. So should see a dry St. Patrick`s day across the
region. Highs will range from the upper 40s far north to the mid 60s
far south. Temps be a bit above normal by Sunday with highs in
the mid 50s to low 60s.

Next chance for rain to begin moving in Sunday afternoon, as a
system lifts eastward out of the Central Plains. Some decent
instability with this system, so some thunderstorms possible,
mainly along and south of I-70 through Monday afternoon. Colder
air to filter in behind system, so will see rain briefly mix with
snow late Monday night through Tuesday morning before ending.
Cooler, near normal temps expected for the first part of the work



.AVIATION...  (For the 00z TAFs through 00z Thursday Evening)
Issued at 608 PM CDT Wed Mar 14 2018

VFR and dry thru the period. Swly to wly winds will back slightly
and diminish after sunset. A LLJ will increase over the area
tonight. LLWS will diminish late tonight into Thurs morning from
north to south as a weak front pushes into the region. Expect SHRA
to develop Thurs evening beyond the TAF period.





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