Hart, Minnesota Weather Forecast Discussion

621
FXUS63 KARX 262343
AFDARX
Area Forecast Discussion
National Weather Service La Crosse WI
643 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 /00Z TAFS THROUGH 00Z SUNDAY/...
Issued at 624 PM CDT Fri Sep 26 2025
High confidence in mostly VFR conditions through the 27.00Z TAF
period. Low confidence in IFR ceilings/visibilities affecting
smaller airports locally in central Wisconsin early Saturday
morning.
Most notable forecast impact will be a quick clockwise wind
shift through Saturday morning, initially south-southwest
becoming north-northwest and northwest by the afternoon. While
haven`t included wind gusts at either TAF site, wind prone
airports west of the Mississippi River may require addition of
gusts by late Saturday morning.
SUNDAY THROUGH TUESDAY... A drier airmass limits fog impacts
outside of the Wisconsin River Valley Sunday morning. Potential
for river valley fog will return Monday morning and Tuesday
morning.
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.
&&
$$
DISCUSSION...Boyne
AVIATION...JAR

NWS ARX Office Area Forecast Discussion