Severe Thunderstorm Warning 46, NWS La Crosse, WI

223 
WWUS53 KARX 152114
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
414 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
414 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR CRAWFORD COUNTY...

At 414 PM CDT, a severe thunderstorm was located 8 miles east of
Harpers Ferry, or 11 miles northeast of Prairie Du Chien, moving east
at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Boscobel around 430 PM CDT.

Other locations impacted by this severe thunderstorm include Highway
35 And County D, Eastman, Horrigan Ridge, Plugtown, Mount Zion,
Harris Ridge, and Highways 60 And 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4315 9115 4320 9112 4325 9106 4331 9111
      4333 9114 4335 9114 4338 9067 4317 9067
      4317 9069 4312 9074 4311 9080 4308 9085
      4306 9091 4306 9094 4303 9098 4301 9116
TIME...MOT...LOC 2114Z 264DEG 35KT 4317 9099 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

828 
WWUS53 KARX 152117
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
417 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
417 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR CRAWFORD COUNTY...

At 417 PM CDT, a severe thunderstorm was located 9 miles east of
Harpers Ferry, or 12 miles northeast of Prairie Du Chien, moving east
at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Boscobel around 435 PM CDT.

Other locations impacted by this severe thunderstorm include Highway
35 And County D, Eastman, Horrigan Ridge, Plugtown, Mount Zion,
Harris Ridge, and Highways 60 And 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4315 9115 4320 9112 4325 9106 4331 9111
      4333 9114 4335 9114 4338 9067 4317 9067
      4317 9069 4312 9074 4311 9080 4308 9085
      4306 9091 4306 9094 4303 9098 4301 9116
TIME...MOT...LOC 2117Z 263DEG 34KT 4318 9097 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

170 
WWUS53 KARX 152123
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
423 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
423 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR CENTRAL CRAWFORD COUNTY...

At 423 PM CDT, a severe thunderstorm was located 10 miles west of
Boscobel, or 15 miles northeast of Prairie Du Chien, moving east at
40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Boscobel around 430 PM CDT.

Other locations impacted by this severe thunderstorm include Eastman,
Horrigan Ridge, Plugtown, Mount Zion, Harris Ridge, Highways 60 And
61, and Fairview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4313 9104 4319 9102 4325 9099 4330 9100
      4333 9099 4336 9100 4338 9067 4317 9067
      4317 9069 4312 9074 4311 9080 4308 9085
      4306 9091 4306 9094 4303 9098 4302 9110
TIME...MOT...LOC 2123Z 264DEG 35KT 4319 9089 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

684 
WWUS53 KARX 152130
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
430 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
430 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR EASTERN CRAWFORD COUNTY...

At 425 PM CDT, a severe thunderstorm was located 8 miles west of
Boscobel, or 17 miles northeast of Prairie Du Chien, moving east at
40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Boscobel around 430 PM CDT.

Other locations impacted by this severe thunderstorm include Wauzeka,
Horrigan Ridge, Plugtown, Steuben, Highway 131 And County B, Mount
Zion, and Harris Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4314 9101 4323 9096 4336 9093 4338 9067
      4317 9067 4317 9069 4312 9074 4311 9080
      4308 9085 4306 9091 4306 9094 4303 9098
      4303 9103
TIME...MOT...LOC 2125Z 264DEG 35KT 4319 9085 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

362 
WWUS53 KARX 152130 RRA
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
430 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
430 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR EASTERN CRAWFORD COUNTY...

At 430 PM CDT, a severe thunderstorm was located near Boscobel, or 19
miles northeast of Prairie Du Chien, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Boscobel around 435 PM CDT.

Other locations impacted by this severe thunderstorm include Wauzeka,
Horrigan Ridge, Plugtown, Steuben, Mount Zion, Harris Ridge, and
Highways 60 And 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4312 9097 4321 9093 4332 9093 4338 9067
      4317 9067 4317 9069 4312 9074 4311 9080
      4308 9085 4306 9091 4306 9094 4303 9098
      4303 9103
TIME...MOT...LOC 2130Z 263DEG 34KT 4319 9081 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

226 
WWUS53 KARX 152139
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
439 PM CDT Wed Apr 15 2026

WIC023-152200-
/O.CON.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
439 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR SOUTHEASTERN CRAWFORD COUNTY...

At 439 PM CDT, a severe thunderstorm was located near Boscobel, or 17
miles southwest of Richland Center, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southeastern Crawford County, including the following locations...
Wauzeka, Horrigan Ridge, Plugtown, Steuben, Mount Zion, Harris Ridge,
and Highways 60 And 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4311 9091 4320 9088 4332 9080 4338 9067
      4317 9067 4317 9069 4312 9074 4311 9080
      4308 9085 4306 9091 4306 9094 4303 9098
      4303 9103
TIME...MOT...LOC 2139Z 263DEG 34KT 4320 9069 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JSB

023 
WWUS53 KARX 152143
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
443 PM CDT Wed Apr 15 2026

WIC023-152152-
/O.CAN.KARX.SV.W.0046.000000T0000Z-260415T2200Z/
Crawford WI-
443 PM CDT Wed Apr 15 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CRAWFORD COUNTY
IS CANCELLED...

The severe thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been 
cancelled.

&&

LAT...LON 4311 9091 4320 9088 4332 9080 4338 9067
      4317 9067 4317 9069 4312 9074 4311 9080
      4308 9085 4306 9091 4306 9094 4303 9098
      4303 9103
TIME...MOT...LOC 2139Z 264DEG 35KT 4320 9065 

$$

JSB

Area Forecast Discussion
National Weather Service La Crosse WI
128 PM CDT Wed Apr 15 2026

.KEY MESSAGES...

- Another round of strong to severe storms possible today and
  tonight, primarily affecting northeast Iowa into southwest
  Wisconsin with potentially damaging wind and large hail.
  Isolated tornado threat cannot be ruled out.

- Break in storms and rainfall expected Thursday with a line of
  severe storms possible Friday afternoon and night. While it
  remains too far out to nail down details, all hazards look
  possible with enhanced forcing and an unstable airmass in
  place.

&&

.DISCUSSION...
Issued at 121 PM CDT Wed Apr 15 2026

Severe Storms Possible Again Today

Another day, another chance for severe weather to impact the
Driftless Region. Early this afternoon an elevated supercell was
moving across Western and Central Iowa, riding a quasi-stationary
boundary north and east along a gradient of MLCAPE. As it's
generally on the cool side of the front, this is expected to
continue to pose more of a large hail threat given steep mid level
lapse rates and sufficient CAPE in the hail growth zone. Further
east across Northeast Iowa and Southwest Wisconsin, lingering cloud
cover and light showers have allowed the area to remain sufficiently
capped and overall stable. As these finally start to move to the
east/northeast, we may see a small window of destabilization.
Latest mesoanalysis trends show meager destabilization before
storms really start to fire later this afternoon as ascent from
an ejecting upper trough across the Central Plains increases
across the area and interacts with the surface boundary.
Moderately strong mid level lapse rates should still promote
between 500-1500 J/kg of MLCAPE, even with the continued cloud
cover. The main threat with any storms would be large to
potentially very large hail. There's also potential for
splitting supercells given the significantly elongated straight
hodographs expected with this activity. The main question will
be how long storms can stay semi-discrete before either lifting
north of the boundary or growing upscale into a cluster as
effective bulk shear between 30-50 kts will promote upscale
growth. These storms will also be effective rainfall producers
as pWats continue to increase with 850 mb moisture transport
into the region. Another 0.5-1.5 inches of precipitation is
expected with across portions of SW and Central Wisconsin, areas
that have already seen ample rainfall and flooding over the
past couple of days. Have issued a Flood Watch for this area
starting at 4 pm and continuing through 7 am tomorrow morning as
areal flooding may form with exacerbation to already ongoing
areal/river flooding expected.

Even More Severe Weather Friday

After a brief reprieve from severe storms Thursday, we re-enter
the severe weather fray on Friday. A deep trough over the
Rockies is expected to start sliding east with ascent out ahead
of it increasing across the southwesterly flow aloft. At the
surface a family of lows will stretch south from the Dakotas
into the Central Plains and Colorado Rockies with a cold front
connecting them. A broad warm sector will develop across the
Mississippi Valley ahead of this cold front which will allow for
convective development Friday afternoon as ascent aloft
increases locally and interacts with the eastward moving cold
front. A highly unstable air mass should be in place with
forecast instability in the 2000-3000 J/kg range. Effective
shear will be ample enough to support initial supercellular
development before upscale growth occurs and forms a more linear
structure. A 40-60 kt jet in the 850-700 mb layer will also
help to promote low/mid level hodograph curvature and strength,
increasing the potential for tornadoes with the supercells. The
main question will be how far north can the moisture and more
ample instability make it ahead of storm initiation with greater
uncertainty in northward extent. Far southern portions of NE
Iowa are currently in a Day 3 Enhanced Risk (level 3/5) with the
rest of the local area in a level 2 Slight Risk.

Much Cooler This Weekend, Snow Chances??

Behind this cold front, cold air advection will be rather strong
given the tight pressure gradient behind the departing surface low
(moving northeast into Ontario). With the strong cooling expected in
the wake of the front, any post frontal precipitation may
potentially turn to a rain snow mix Friday night into Saturday as
lows drop into the low to mid 30s. No accumulations are expected as
surface temperatures will remain quite warm after the stretch of 70+
degree temperatures we've seen as of late. Any snow should melt on
contact pretty quickly. Precipitation will gradually come to an
end through the day with high temperatures in the 40s, 20-30+
degrees cooler from Friday. Beyond Saturday, it looks like a dry
forecast with temperatures warming back into the 50s and 60s by
mid week - a much welcomed relief after an active week of
severe weather!

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1216 PM CDT Wed Apr 15 2026

Scattered showers and storms will be mainly found south of
Interstate 94 corridor. Confidence on the northern extent of
these storms were not high enough to include them in the KRST
TAF at this time. As far as KLSE, confidence was a bit higher
so they were included in the TAF.

For late tonight, fog will likely develop. However, there is
still plenty of uncertainty on how dense it will be, so just
added some MVFR fog for now.

&&

.HYDROLOGY...
Issued at 121 PM CDT Wed Apr 15 2026

A Flood Watch has been issued for Southwestern Wisconsin and
portions of West Central Wisconsin as yet another round of showers
and thunderstorms is set to impact the region. With additional .5-
1.5 inches of QPF expected from this activity, areal and river
flooding is expected to worsen. The main basins of concern look
to be the Kickapoo, the Yellow (WI), Lemonweir, and Wisconsin
Rivers as these areas have already been hit hard over this past
week. Major flooding is either already occurring or expected to
occur for the Yellow River at Necedah, Castle Rock Dam on the
Wisconsin River, and the Lemonweir River in New Lisbon.
Flooding along the Lemonweir has already lead to some road
closures in portions of Juneau and Monroe counties with
additional rain likely to exacerbate ongoing problems.
Additional rainfall is also expected Friday as a line of storms
moves through the entire area, again impacting portions of SW
and WC Wisconsin. QPF totals with that system remain a bit more
uncertain - though another 0.5 -1.5 inches certainly looks
possible.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Flood Watch through Thursday morning for WIZ042>044-053>055-
     061.
MN...None.
IA...None.

&&

DISCUSSION...Barendse
AVIATION...Boyne
HYDROLOGY...Barendse

Hazardous Weather Outlook
National Weather Service La Crosse WI
419 AM CDT Wed Apr 15 2026

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-161330-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
419 AM CDT Wed Apr 15 2026

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...Today and Tonight

Severe storms could affect parts of the area this afternoon and
evening, mainly over northeast Iowa and southwest Wisconsin.
Large hail of 2 inches in diameter or greater, damaging winds of
60 to 70 mph, and locally heavy rain will be the main impacts.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The threat for severe weather returns for Friday as a line of
storms moves through the region. How far north along this line the
severe weather threat extends and the exact hazards will be
refined in the coming days.

.SPOTTER INFORMATION STATEMENT...

Spotter reports may be needed this afternoon and again Friday
afternoon.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

KDS

Preliminary Local Storm Report
National Weather Service La Crosse WI
1015 AM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0737 AM     Flood            2 ESE Wyeville          44.02N 90.35W
04/15/2026                   Monroe             WI   Emergency Mngr

            Water from Lemonweir River over the roadway
            at County Rd PP and Excelsior. Road is
            closed.

&&

JAW

Preliminary Local Storm Report
National Weather Service La Crosse WI
230 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0229 PM     Flood            Plainville              43.71N 89.82W
04/15/2026                   Adams              WI   Emergency Mngr

            Increased flows on Wisconsin River has water
            surrounding homes and water over part of the
            road on Gem Ct approx 12mi downstream of
            Castle Rock Dam.

&&

Preliminary Local Storm Report
National Weather Service La Crosse WI
233 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     Flood            3 SW Adams              43.93N 89.87W
04/15/2026                   Adams              WI   Emergency Mngr

            Delayed report, time of incident unknown.
            15th ln road is closed due to two culverts
            collapsing.

&&

Preliminary Local Storm Report
National Weather Service La Crosse WI
248 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0557 PM     Hail             Millston                44.19N 90.64W
04/14/2026  M2.50 Inch       Jackson            WI   Public

            Corrects previous hail report from Millston.
            Photo provided via social media. Corrected
            for time of hailfall.

&&

APF