481
FXUS63 KARX 081023
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
523 AM CDT Wed Oct 8 2025

.KEY MESSAGES...

- Widespread frost is expected in north-central and central
  Wisconsin tonight. Elsewhere there will be patchy frost.

- Scattered showers possible Thursday Night.

- Additional showers and storms will be possible early next
  week.

&&

.DISCUSSION...
Issued at 216 AM CDT Wed Oct 8 2025

Tonight - Frost Potential

A high pressure system over the Great Lakes and eastern Ontario
will result in another night of clear skies and unseasonably
cool temperatures. Low temperatures on Wednesday morning will be
mainly in the 30s across the Upper Mississippi River Valley. The
coldest temperatures (lower and mid-30s) will be found in
central and north-central Wisconsin. This will result in
widespread frost in these locations. Elsewhere there will be
patchy frost.

Thursday Night - Scattered Showers

On Thursday night, 08.00z models continue to show that a cold
front will move southeast through the Upper Mississippi River
Valley. There is just enough surface moisture convergence along
the front for scattered showers (20-40 percent chance of
occurrence)  to develop. Rainfall amounts will be less than a
tenth of an inch

Sunday into Tuesday - More Showers Possible and Maybe a Few
Storms

The operational models are in general agreement that the 500 mb
ridge of the Upper Mississippi River Valley will flatten early
next week. As this occurs, shortwave troughs will eject out of
the western US longwave trough. Each of these shortwave will
bring with them a chance of showers and maybe some storms.

Southwest winds will continue to bring unseasonably warm
temperatures into the region. High temperatures will range from
the mid-60s to lower 70s. This is around 10 degrees warmer than
normal.

&&

.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/...
Issued at 523 AM CDT Wed Oct 8 2025

Aside from early morning valley fog today in the Wisconsin
River and a few Mississippi River tributaries, look for VFR
conditions for the rest of the TAF period. Light northeasterly
winds of less than 5 kts this morning veer to the east/southeast
and increase to 5-10G15 kts for tonight, mainly west of the
Mississippi River.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Frost Advisory until 9 AM CDT this morning for WIZ032-033-
     041>044-053-055.
     Freeze Warning until 9 AM CDT this morning for WIZ017-029-034.
MN...Frost Advisory until 9 AM CDT this morning for MNZ079-086>088.
IA...None.

&&

$$

DISCUSSION...Boyne
AVIATION...Skow