Alert archive / Wisconsin / Tornado Warnings in 2026

Tornado Warning 46, NWS La Crosse, WI

June 17, 2026Crawford County, Wisconsin; Allamakee County, Iowa

NWS La Crosse, WI issued this tornado warning at Jun 17, 2026, 5:04 PM CDT for Crawford County, Wisconsin; Allamakee County, Iowa. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 17, 2026, 5:04 PM CDT (22:04 UTC)
Expired: Jun 17, 2026, 5:45 PM CDT
In force: 41 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Allamakee County, IA, Crawford County, WI

The radar

The La Crosse radar (KARX), 79 km from the middle of the area, began a volume at 22:07 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 17, 5:17 PM CDT	TORNADO	3 N Eastman, WI	Report of 4 power poles snapped in vicinity of a radar tornadic debris signature.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this tornado warning; the first came 13 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 1:17 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.1 hours before the alert went out and 173 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2165 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

131 
WFUS53 KARX 172204
TORARX
IAC005-WIC023-172245-
/O.NEW.KARX.TO.W.0046.260617T2204Z-260617T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
504 PM CDT Wed Jun 17 2026

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  East central Allamakee County in northeastern Iowa...
  Central Crawford County in southwestern Wisconsin...

* Until 545 PM CDT.

* At 504 PM CDT, a tornado producing storm was located near Harpers
  Ferry, or 8 miles south of Lansing, moving east at 45 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic storm will be near...
  Harpers Ferry around 510 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Wauzeka, Eastman, Highway 27 And County F, Plugtown, Steuben, Harris
Ridge, and Highways 60 And 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4322 9123 4326 9106 4323 9067 4317 9067
      4317 9069 4316 9070 4314 9073 4312 9074
      4311 9080 4309 9083 4309 9084 4308 9085
      4306 9091
TIME...MOT...LOC 2204Z 291DEG 37KT 4323 9122 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

Skow

6 follow-up statements

134 
WWUS53 KARX 172211
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
511 PM CDT Wed Jun 17 2026

IAC005-WIC023-172245-
/O.CON.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Allamakee IA-Crawford WI-
511 PM CDT Wed Jun 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR EAST
CENTRAL ALLAMAKEE AND CENTRAL CRAWFORD COUNTIES...

At 510 PM CDT, a confirmed large and extremely dangerous tornado was
located near Harpers Ferry, or 11 miles southeast of Lansing, moving
east at 50 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

The tornado will be near...
  Boscobel around 535 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Highway 27 And County F, Plugtown, Steuben, Harris Ridge, Highways 60
And 61, Maple Ridge, and Lynxville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4326 9106 4323 9067 4317 9067 4317 9069
      4316 9070 4314 9073 4312 9074 4311 9080
      4309 9083 4323 9120
TIME...MOT...LOC 2210Z 274DEG 42KT 4323 9110 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...<.75 IN

$$

Skow

535 
WWUS53 KARX 172216
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
516 PM CDT Wed Jun 17 2026

IAC005-172226-
/O.CAN.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Allamakee IA-
516 PM CDT Wed Jun 17 2026

...THE TORNADO WARNING FOR EAST CENTRAL ALLAMAKEE COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
northeastern Iowa...and southwestern Wisconsin.

&&

LAT...LON 4319 9110 4324 9107 4324 9106 4326 9106
      4323 9067 4317 9067 4317 9069 4316 9070
      4314 9073 4313 9074 4312 9076 4311 9080
      4309 9083
TIME...MOT...LOC 2216Z 281DEG 40KT 4321 9102 

$$

WIC023-172245-
/O.CON.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Crawford WI-
516 PM CDT Wed Jun 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR CENTRAL
CRAWFORD COUNTY...

At 516 PM CDT, a confirmed large and extremely dangerous tornado was
located near Harpers Ferry, or 13 miles northeast of Prairie Du
Chien, moving east at 45 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

The tornado will be near...
  Boscobel around 530 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Highway 27 And County F, Plugtown, Steuben, Harris Ridge, Highways 60
And 61, Maple Ridge, and Lynxville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4319 9110 4324 9107 4324 9106 4326 9106
      4323 9067 4317 9067 4317 9069 4316 9070
      4314 9073 4313 9074 4312 9076 4311 9080
      4309 9083
TIME...MOT...LOC 2216Z 281DEG 40KT 4321 9102 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...<.75 IN

$$

Skow

677 
WWUS53 KARX 172222
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
522 PM CDT Wed Jun 17 2026

WIC023-172245-
/O.CON.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Crawford WI-
522 PM CDT Wed Jun 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR EAST
CENTRAL CRAWFORD COUNTY...

At 522 PM CDT, a confirmed large and extremely dangerous tornado was
located 10 miles east of Harpers Ferry, or 14 miles northeast of
Prairie Du Chien, moving east at 45 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

The tornado will be near...
  Boscobel around 530 PM CDT.

Other locations impacted by this tornadic thunderstorm include Maple
Ridge, Plugtown, Steuben, Boydtown, Harris Ridge, Highways 60 And 61,
and Crowley Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4316 9102 4324 9100 4323 9067 4317 9067
      4317 9069 4316 9070 4314 9073 4313 9074
      4312 9076 4311 9080 4309 9083
TIME...MOT...LOC 2222Z 283DEG 40KT 4319 9094 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...<.75 IN

$$

Skow

105 
WWUS53 KARX 172228
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
528 PM CDT Wed Jun 17 2026

WIC023-172245-
/O.CON.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Crawford WI-
528 PM CDT Wed Jun 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR EAST
CENTRAL CRAWFORD COUNTY...

At 527 PM CDT, a confirmed tornado was located 8 miles west of
Boscobel, or 16 miles northeast of Prairie Du Chien, moving east at
40 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Boscobel around 535 PM CDT.

Other locations impacted by this tornadic thunderstorm include Maple
Ridge, Plugtown, Steuben, Boydtown, Harris Ridge, Highways 60 And 61,
and Easter Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4314 9092 4322 9091 4323 9067 4317 9067
      4317 9069 4316 9070 4314 9073 4313 9074
      4312 9076 4311 9080
TIME...MOT...LOC 2227Z 289DEG 37KT 4318 9086 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

Skow

526 
WWUS53 KARX 172234
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
534 PM CDT Wed Jun 17 2026

WIC023-172245-
/O.CON.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Crawford WI-
534 PM CDT Wed Jun 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR EAST
CENTRAL CRAWFORD COUNTY...

At 534 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Boscobel, or 20 miles northeast of Prairie Du Chien,
moving east at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation. This storm has a history of 
         producing at least one long tracked tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Boscobel around 540 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Boydtown, Maple Ridge, Highways 60 And 61, Easter Rock, and Steuben.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4312 9085 4320 9085 4321 9067 4317 9067
      4317 9069 4316 9070 4314 9073 4313 9074
      4312 9076 4311 9080
TIME...MOT...LOC 2234Z 286DEG 38KT 4316 9077 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Skow

334 
WWUS53 KARX 172242
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
542 PM CDT Wed Jun 17 2026

WIC023-172252-
/O.EXP.KARX.TO.W.0046.000000T0000Z-260617T2245Z/
Crawford WI-
542 PM CDT Wed Jun 17 2026

...THE TORNADO WARNING FOR EAST CENTRAL CRAWFORD 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.

A Tornado Watch remains in effect until 900 PM CDT for southwestern
Wisconsin.

&&

LAT...LON 4312 9085 4320 9085 4321 9067 4317 9067
      4317 9069 4316 9070 4314 9073 4313 9074
      4312 9076 4311 9080
TIME...MOT...LOC 2242Z 291DEG 37KT 4313 9068 

$$

Skow

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this tornado warning went out at Jun 17, 2:05 PM CDT, 2 hours 59 minutes earlier. Its key messages:

Scattered showers and storms this afternoon into the evening. Some of these storms could be severe. Large hail and damaging winds will continue to be the main threats with the tornado threat dependent on amount of destabilization.
Periodic showers and storms from Thursday into early next week with high temperatures remaining in the 70s for most locations.

Area forecast discussion, Jun 17, 2:05 PM CDT, 2 hours 59 minutes before

Area Forecast Discussion
National Weather Service La Crosse WI
205 PM CDT Wed Jun 17 2026

.KEY MESSAGES...

- Scattered showers and storms this afternoon into the evening.
  Some of these storms could be severe. Large hail and damaging
  winds will continue to be the main threats with the tornado
  threat dependent on amount of destabilization.

- Periodic showers and storms from Thursday into early next
  week with high temperatures remaining in the 70s for most
  locations.

&&

.DISCUSSION...
Issued at 205 PM CDT Wed Jun 17 2026

Today: Scattered Showers and Storms

The initial round of storms this morning largely stayed south of the
forecast area with many locations seeing little to no rain. The
majority of the rain fell north of I-94 and our far southern
counties within our CWA. Much of the forecast area has remained dry
through much of the morning. As we head into through the afternoon a
surface low and associated cold front currently over central
Minnesota will move southeastward over our area. This will help to
bring scattered showers and storms through the afternoon and
evening. There remains a potential for severe thunderstorms to
occur. With cooler temperatures aloft and strong deep layer shear,
around 45 to 60 kts of 0-6km shear, large hail and damaging winds
will be possible with any stronger storm. A couple of tornadoes
could also be possible given the amount of surface vorticity right
along the front and the 1000 to 1500 J/kg of SBCAPE. All
precipitation chances end later this evening as the low shifts off to
the east. With the heavy rain staying well to our south this
morning, the flooding potential has decreased a bit. There still
remains some potential for localized flooding due to repeated storms
or a heavier storm over a given location. Our current forecasted QPF
is between 0.2 to 0.5" for areas in southeast Minnesota and areas
along and north of I-90 in Wisconsin. Areas in northeast Iowa and
far southwest Wisconsin are generally under 0.25", but this could
change as there is a little uncertainty on how far southeast the
stronger storms will go.

Thursday: Spotty Showers and Storms

Northwest flow over the area with weak moisture advection will be in
place for Thursday. A weak theta-e boundary moves from northwest to
southeast across the forecast area during the afternoon. With around
300 to 600 J/kg of MUCAPE, there is a low chance (15 to 25%) for
showers and storms to form during the afternoon along this boundary.
The last couple of runs from CAMs continue to show increased
coverage in these showers and storms so would not be surprised if
PoP chances increase for the afternoon.

Friday-Early Next Week: Periodic Shower and Storm Chances

Primarily northwest to west flow aloft continues through at least
early next week. Another shortwave moves down into the Upper Midwest
on Friday increasing rain chances for the afternoon. The latest LREF
has a 60 to 75% chance for measurable rain to occur across the
forecast area. The next chance for rain is for Saturday night into
Sunday, however this has continued to gradually shift southward. The
LREF has around a 40 to 55% chance for measurable rain for areas
south of I-90. After a brief break from the rain chances on Monday
due to shortwave ridging, another shortwave trough moves down on
Tuesday bringing another chance for rain. Temperatures through the
forecast period remain mostly in the 70s for highs and 50s for
lows.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1250 PM CDT Wed Jun 17 2026

Widespread MVFR ceilings persist through the afternoon with
pockets of IFR ceilings during the evening and overnight hours,
mainly at higher elevation locations. A line of showers and
storms move through this afternoon, decreasing in intensity in
the evening. These ceilings last through the overnight and lift
through the morning on Thursday. Current southerly winds as of
midday veer to the west and northwest behind the front bringing
these storms with gusts of 20-30kts in its wake. These winds
slowly decrease overnight to 5-10kts by Thursday morning.

&&

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

&&

DISCUSSION...Cecava
AVIATION...Skow

Hazardous weather outlook, Jun 17, 8:50 AM CDT, 8 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
850 AM CDT Wed Jun 17 2026

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-181800-
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-
850 AM CDT Wed Jun 17 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 will be possible this afternoon and evening with
the potential for all hazards including large hail, damaging
winds, a few tornadoes, and heavy rainfall leading to localized
flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

No action needed.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 5:33 PM CDT	Tornado Warning	ARX	Grant, Richland	30 min
Jun 17, 4:50 PM CDT	Tornado Warning	ARX	Allamakee	25 min

Nearby

Tornado Warnings in Wisconsin, 2026 Tornado Warnings in Iowa, 2026 Every tornado warning in 2026 Tornadoes in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.