Carpenter, Iowa Weather Forecast Discussion

332
FXUS63 KARX 261748
AFDARX
Area Forecast Discussion
National Weather Service La Crosse WI
1248 PM CDT Fri Sep 26 2025
.KEY MESSAGES...
- High pressure will provide dry weather through much of next
  week. As a result, the forecast is dry with enhanced chances
  of warmer-than-normal temperatures.
&&
.DISCUSSION...
Issued at 1236 PM CDT Fri Sep 26 2025
Tonight and Saturday
A 500 mb shortwave trough will move through the region late tonight
and Saturday morning. This system will have little moisture to work
with, so other than a wind shift there will no impact to the
sensible weather. With increasing winds and shallow boundary layer
moisture tonight, the fog potential looks very low. Low
temperatures tonight will be in the 50s tonight and high
temperatures will range from the mid-70s to lower 80s.
Saturday night through Thursday
In the wake of the system tonight and Saturday, a 500 mb ridge of
high pressure will build across the Upper Mississippi River Valley
and eventually the Canadian Prairies. If Imelda comes into the
southeast United Sates early next week, a Rex Block would gradually
develop. This will keep the forecast dry through this time period.
Even if does not develop, the strong 500 mb ridge will keep the area
dry. High temperatures will range from the mid-70s to lower 80s for
this time period. Currently, the high temperatures for
Wednesday and Thursday are in the lower and mid-70s. If these
trends continue, these temperatures will have to be eventually
raised into the 75th percentile which ranges from the mid-70s to
lower 80s.
&&
.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1225 PM CDT Fri Sep 26 2025
Confidence is high that VFR conditions and mostly clear skies will
prevail through the period with perhaps an exception along and
east of an MDZ-LNR line where some IFR/LIFR stratus could occur
around 12z Saturday. Otherwise, low level winds should be high
enough to prevent a recurrence of the fog/stratus problems of
the past several nights, including within river valleys.
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.
&&
$$
DISCUSSION...Boyne
AVIATION...Ferguson

NWS ARX Office Area Forecast Discussion