021 
FXUS63 KARX 281011
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
510 AM CDT Sun Sep 28 2025

.KEY MESSAGES...

- Unseasonably mild conditions through most of the upcoming 
  week with highs mainly in the mid 70s to low 80s. 

- Staying dry, with some low rain chances later next week. 

&&

.DISCUSSION...
Issued at 303 AM CDT Sun Sep 28 2025

Dry and Mild Weather Through Midweek, Low Rain Chances Return Next 
Weekend:

Ridging builds in today as the shortwave trough that came through 
yesterday has exited the region. Mild and dry weather are expected 
through the week. Winds will shift to the southeast this morning and 
stay out of the southeast through most of this week. Ensemble and 
deterministic guidance has this ridge overhead through much of the 
week. As a result, temperatures are forecasted to be 10 to 15 
degrees above normal with some locations approaching 20 degrees 
above normal. This translates into high temperatures mostly in the 
upper 70s to mid 80s. By the end of the week, ensemble guidance 
shifts the ridge axis to the east and most (about 85%) of the 
ensemble members support the ridge flattening out a bit and a 
longwave trough approaching from the west, however the strength and 
timing of this trough are quite uncertain at this time. The ridge 
becoming less amplified will allow for shortwaves to pass through 
and increase rain chances as we head into the weekend.

&&

.AVIATION /12Z TAFS THROUGH 12Z MONDAY/...
Issued at 510 AM CDT Sun Sep 28 2025

CIGS: mostly SKC conditions into Monday.

WX/vsby: river valley fog remains the primary concern for KLSE. 
RAP/HRRR/NAM12 soundings trend too much wind in the near sfc layer 
for any fog/stratus to move off the river and impact KLSE - and will 
continue to follow this for the forecast.

WINDS: light/vrb becoming light south/southeast by mid 
morning...holding there through tonight. 

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.

&&

$$

DISCUSSION...Cecava
AVIATION...Rieck