Severe Thunderstorm Warning 47, NWS La Crosse, WI

081 
WWUS53 KARX 152223
SVSARX

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

WIC043-152245-
/O.CON.KARX.SV.W.0047.000000T0000Z-260415T2245Z/
Grant WI-
523 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EAST CENTRAL GRANT COUNTY...

At 523 PM CDT, a severe thunderstorm was located near Fennimore, or
near Lancaster, moving east at 45 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 east
central Grant County, including the following locations... Preston,
Annaton, Arthur, Montfort, Mount Ida, Livingston, and Klondyke
Secluded Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 9083 4301 9084 4303 9043 4280 9043
TIME...MOT...LOC 2223Z 269DEG 41KT 4291 9066 

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

$$

JSB

981 
WWUS53 KARX 152229
SVSARX

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

WIC043-152245-
/O.CON.KARX.SV.W.0047.000000T0000Z-260415T2245Z/
Grant WI-
529 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EAST CENTRAL GRANT COUNTY...

At 529 PM CDT, a severe thunderstorm was located near Fennimore, or 7
miles northeast of Lancaster, moving east at 45 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 east
central Grant County, including the following locations... Preston,
Annaton, Arthur, Montfort, Mount Ida, Livingston, and Klondyke
Secluded Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 9083 4301 9084 4303 9043 4280 9043
TIME...MOT...LOC 2229Z 267DEG 38KT 4292 9060 

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

$$

JSB

416 
WWUS53 KARX 152232
SVSARX

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

WIC043-152245-
/O.CON.KARX.SV.W.0047.000000T0000Z-260415T2245Z/
Grant WI-
532 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EAST CENTRAL GRANT COUNTY...

At 531 PM CDT, a severe thunderstorm was located near Fennimore, or 8
miles northeast of Lancaster, moving east at 45 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 east
central Grant County, including the following locations... Preston,
Annaton, Arthur, Montfort, Livingston, Union, and Stitzer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4285 9075 4297 9067 4302 9074 4303 9043
      4280 9043
TIME...MOT...LOC 2231Z 267DEG 38KT 4292 9057 

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

$$

JSB

840 
WWUS53 KARX 152235
SVSARX

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

WIC043-152245-
/O.CON.KARX.SV.W.0047.000000T0000Z-260415T2245Z/
Grant WI-
535 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR EAST CENTRAL GRANT COUNTY...

At 535 PM CDT, a severe thunderstorm was located 7 miles southeast of
Fennimore, or 10 miles northeast of Lancaster, moving east at 45 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 east
central Grant County, including the following locations... Preston,
Annaton, Arthur, Montfort, Livingston, Union, and Stitzer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 9069 4294 9063 4302 9066 4303 9043
      4280 9043
TIME...MOT...LOC 2235Z 267DEG 38KT 4293 9052 

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

$$

JSB

838 
WWUS53 KARX 152243
SVSARX

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

WIC043-152252-
/O.EXP.KARX.SV.W.0047.000000T0000Z-260415T2245Z/
Grant WI-
543 PM CDT Wed Apr 15 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GRANT COUNTY WILL
EXPIRE AT 545 PM CDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 4284 9069 4294 9063 4302 9066 4303 9043
      4280 9043
TIME...MOT...LOC 2242Z 269DEG 41KT 4293 9043 

$$

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
419 PM CDT Wed Apr 15 2026

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

0417 PM     Hail             3 N Eastman             43.20N 91.02W
04/15/2026  M0.25 Inch       Crawford           WI   Public

&&

jar

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

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

0436 PM     Hail             Wauzeka                 43.09N 90.88W
04/15/2026  E0.25 Inch       Crawford           WI   County Official

&&

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

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

0420 PM     Hail             Seneca                  43.27N 90.96W
04/15/2026  E0.25 Inch       Crawford           WI   Public

            Time estimated via radar.

&&

jar

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

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

0440 PM     Tstm Wnd Gst     4 SSW Clayton           43.33N 90.74W
04/15/2026  E50 MPH          Crawford           WI   County Official

&&

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Special Weather Statement
National Weather Service La Crosse WI
448 PM CDT Wed Apr 15 2026

IAZ030-WIZ054-055-061-152245-
Clayton IA-Richland WI-Crawford WI-Grant WI-
448 PM CDT Wed Apr 15 2026

...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN CLAYTON...GRANT...
RICHLAND AND SOUTHEASTERN CRAWFORD COUNTIES THROUGH 545 PM CDT...

At 447 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles west of Richland Center to near
Boscobel to 7 miles southeast of Prairie Du Chien to 6 miles south of
Garnavillo to Dundee. Movement was east at 25 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Strong thunderstorms will be near...
  Richland Center, Guttenberg, and Bloomington around 455 PM CDT.
  Fennimore around 500 PM CDT.
  Muscoda and Cassville around 505 PM CDT.
  Lancaster around 530 PM CDT.

Other locations impacted by these storms include Arthur, Highway 61
And County T, Montfort, Eagle Corners, Turkey River, Beetown, Bixby
State Park, County Roads K And T, Fairview, and Neptune.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4264 9073 4268 9090 4265 9090 4265 9154
      4279 9130 4297 9113 4309 9081 4344 9058
      4341 9019 4317 9019 4319 9024 4320 9026
      4320 9043 4285 9043 4267 9060 4261 9069
TIME...MOT...LOC 2147Z 282DEG 20KT 4336 9055 4308 9074 4296 9106 4278
9123 4260 9153

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

JSB

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

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

0406 PM     Hail             3 NNW Prairie Du Chien  43.08N 91.15W
04/15/2026  M0.25 Inch       Crawford           WI   Public

            Public report via Facebook comment. Time
            estimated from radar.

&&

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