525
FXUS63 KARX 282322
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
622 PM CDT Tue Apr 28 2026

.KEY MESSAGES...

- Cool for the remainder of the week with a few passing rounds
  of sprinkles.

- The risk for frost expands southward through the latter part
  of the week with near to below sub-freezing temperatures
  expected for much of the area Friday and Saturday mornings.

- Warming back up to near average for the weekend.

&&

.DISCUSSION...
Issued at 1200 PM CDT Tue Apr 28 2026

Rest of the Week: Cool and Drier

Broad longwave troughing with multiple embedded shortwaves
resides over the north-central U.S. through the remainder of the
week, keeping a continued fetch of polar air in place and
temperatures roughly 10 degrees below normal. Several of these
aforementioned undulations bring short rounds of clouds and
light showers, the first passing through tonight and the second
during the afternoon on Wednesday. The potential for light
showers dot the forecast for the rest of the week, but given the
weakness of the forcing, it is tough to pin down any further
specifics other than they will be quite light and of little to
no impact.

The risk for any frost tonight should be minimal given the
passing mid to high clouds from our first shortwave, with the
potential for frost and subfreezing temperatures spreading
southward for the rest of the week. Lows for early Friday and
Saturday mornings will likely necessitate widespread
frost/freeze headlines for the region.

Warming up for the Weekend

The pattern shifts for the upcoming weekend, allowing for a
Pacific airmass to build in and temperatures to creep closer to
normal. However, a look into next week shows some signal for a
return to below normal temperatures (highs in the 50s), but with
the region lingering on the inflection point between the
longwave trough and ridge, there is modest spread between the
various ensemble groups and no strong consensus on how
temperatures will unfold at this point.

&&

.AVIATION /00Z TAFS THROUGH 00Z THURSDAY/...
Issued at 616 PM CDT Tue Apr 28 2026

VFR conditions are highly likely (95%) to prevail over the next
24 hours with perhaps a bit of MVFR ceilings east of the
Mississippi around 12z. Winds will be consistently out of the
northwest with some gusts to around 25 knots during the
afternoon hours.

&&

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

&&

$$

DISCUSSION...Skow
AVIATION...Ferguson

NWS ARX Office Area Forecast Discussion