Area Forecast Discussion

758
FXUS63 KLSX 010505
AFDLSX

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
1105 PM CST Wed Dec 31 2025

.KEY MESSAGES...

- A cold front will move through the area tonight. Scattered
  sprinkles or flurries will be possible, mainly across Northeast
  Missouri and west central Illinois.

- Temperatures will remain near normal through the weekend. Warmer
  temperatures are expected next week. However, exactly how much
  warmer remains uncertain.


&&

.SHORT TERM...  (Through Late Thursday Afternoon)
Issued at 201 PM CST Wed Dec 31 2025

The Mississippi Valley remains in northwest flow aloft with a mid-
upper level long wave trough over the eastern U.S. and a ridge over
the west.  A short wave is moving into the Great Lakes Region this
afternoon, and will continue to rotate southeast around a stacked
low over the Hudson Bay.  The surface reflection of the wave is
dragging a cold front through the Upper Midwest at this time, and
short range guidance shows the front moving into northern Missouri
and central Illinois between 04-06Z.  The front continues into
southern Missouri and Kentucky on New Year`s Day where it is
expected to stall and remain nearly stationary through Thursday
night.  Short range guidance is hinting there could be some
flurries/sprinkles forced by modest frontogenesis behind the front
tonight.  However, limited moisture makes any accumulating precip
extremely unlikely (

NWS LSX Office Area Forecast Discussion