Alert archive / Wisconsin / Tornado Warnings in 2026
Tornado Warning 29, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Apr 17, 2026, 4:07 PM CDT for Grant County, Wisconsin. It was in force for 38 min. 3 reports 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
- Apr 17, 2026, 4:07 PM CDT (21:07 UTC)
- Expired
- Apr 17, 2026, 4:45 PM CDT
- In force
- 38 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Grant County, WI
The radar
The La Crosse radar (KARX), 121 km from the middle of the area, began a volume at 21:12 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 |
|---|---|---|---|
| Apr 17, 4:22 PM CDT | HAIL 0.88 | 2 Se Lancaster, WI | Nickel size hail at Sheriffs office southeast of Lancaster. |
| Apr 17, 4:22 PM CDT | HAIL 0.88 | 2 Se Lancaster, WI | Nickel size hail at Sheriffs office southeast of Lancaster. |
| Apr 17, 4:45 PM CDT | TSTM WND DMG | 2 Wnw Montfort, WI | Hog barn damaged, verified by satellite. Time estimated via radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 17, 12:40 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 327 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2301 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 188 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
395
WFUS53 KARX 172107
TORARX
WIC043-172145-
/O.NEW.KARX.TO.W.0029.260417T2107Z-260417T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
407 PM CDT Fri Apr 17 2026
The National Weather Service in La Crosse has issued a
* Tornado Warning for...
Southeastern Grant County in southwestern Wisconsin...
* Until 445 PM CDT.
* At 407 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Balltown, or 9 miles southwest of Lancaster,
moving northeast at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
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...
Lancaster around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Preston, Arthur, Montfort, Potosi, Livingston, Union, and Stitzer.
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 4275 9086 4310 9043 4273 9042 4266 9082
TIME...MOT...LOC 2107Z 230DEG 36KT 4272 9079
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Ferguson3 follow-up statements
672
WWUS53 KARX 172116
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
416 PM CDT Fri Apr 17 2026
WIC043-172145-
/O.CON.KARX.TO.W.0029.000000T0000Z-260417T2145Z/
Grant WI-
416 PM CDT Fri Apr 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR EAST
CENTRAL GRANT COUNTY...
At 416 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lancaster, moving northeast at 40 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Lancaster around 420 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Rockville, Annaton, Arthur, Montfort, Lancaster Municipal Airport,
Livingston, and Union.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4280 9077 4305 9043 4278 9043 4272 9072
TIME...MOT...LOC 2116Z 241DEG 35KT 4279 9070
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Ferguson840
WWUS53 KARX 172128
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
428 PM CDT Fri Apr 17 2026
WIC043-172145-
/O.CON.KARX.TO.W.0029.000000T0000Z-260417T2145Z/
Grant WI-
428 PM CDT Fri Apr 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR EAST
CENTRAL GRANT COUNTY...
At 428 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lancaster, moving northeast at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
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 thunderstorm will remain over mainly rural areas of
east central Grant County, including the following locations...
Annaton, Arthur, Montfort, Union, Livingston, and Centerville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4285 9043 4279 9063 4287 9068 4305 9043
TIME...MOT...LOC 2128Z 227DEG 25KT 4286 9059
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Ferguson839 WWUS53 KARX 172142 SVSARX Severe Weather Statement National Weather Service La Crosse WI 442 PM CDT Fri Apr 17 2026 WIC043-172152- /O.EXP.KARX.TO.W.0029.000000T0000Z-260417T2145Z/ Grant WI- 442 PM CDT Fri Apr 17 2026 ...THE TORNADO WARNING FOR EAST CENTRAL GRANT COUNTY WILL EXPIRE AT 445 PM CDT... The storm which prompted the warning has moved out of the area. Therefore, the warning will be allowed to expire. However, heavy rain is still possible with this thunderstorm. A Tornado Watch remains in effect until 800 PM CDT for southwestern Wisconsin. && LAT...LON 4285 9043 4279 9063 4287 9068 4305 9043 TIME...MOT...LOC 2142Z 230DEG 36KT 4294 9046 $$ Ferguson
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 11:06 AM CDT | River Flood Warning | ARX | Crawford | 22 hr |
| Apr 17, 1:23 PM CDT | Special Weather Statement | ARX | Grant | 37 min |
| Apr 17, 2:03 PM CDT | Special Weather Statement | ARX | Grant, Richland | 27 min |
| Apr 17, 2:36 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 39 min |
| Apr 17, 2:41 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 36 min |
| Apr 17, 2:45 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 30 min |
| Apr 17, 2:50 PM CDT | Tornado Warning | ARX | Taylor | 40 min |
| Apr 17, 2:57 PM CDT | Tornado Warning | ARX | Richland | 18 min |
| Apr 17, 2:58 PM CDT | Tornado Warning | ARX | Clark, Jackson | 35 min |
| Apr 17, 3:07 PM CDT | Tornado Warning | ARX | Buffalo, Trempealeau | 38 min |
| Apr 17, 3:10 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Jackson, Juneau, Monroe | 50 min |
| Apr 17, 3:39 PM CDT | Tornado Warning | ARX | Buffalo, Trempealeau | 51 min |
| Apr 17, 3:41 PM CDT | Tornado Warning | ARX | Buffalo, Trempealeau | 49 min |
| Apr 17, 3:48 PM CDT | Tornado Warning | ARX | Crawford, Vernon | 42 min |
| Apr 17, 4:05 PM CDT | Tornado Warning | ARX | Jackson, Trempealeau | 40 min |
| Apr 17, 4:09 PM CDT | Tornado Warning | ARX | Jackson, Trempealeau | 51 min |
| Apr 17, 4:30 PM CDT | Tornado Warning | ARX | Clark | 27 min |
| Apr 17, 4:35 PM CDT | Tornado Warning | ARX | Clark, Jackson | 40 min |
| Apr 17, 4:54 PM CDT | Tornado Warning | ARX | Adams, Juneau | 18 min |
| Apr 17, 4:58 PM CDT | Special Weather Statement | ARX | Grant | 32 min |
| Apr 17, 5:13 PM CDT | Tornado Warning | ARX | Clark | 33 min |
| Apr 17, 5:24 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 51 min |
| Apr 17, 5:30 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 28 min |
| Apr 17, 5:37 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 38 min |
Nearby
Tornado Warnings in Wisconsin, 2026Every tornado warning in 2026Tornadoes 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.