Alert archive / Wisconsin / Tornado Warnings in 2021

Tornado Warning 1, NWS La Crosse, WI

June 29, 2021Crawford County, Wisconsin; Allamakee County, Iowa

NWS La Crosse, WI issued this tornado warning at Jun 29, 2021, 3:25 PM CDT for Crawford County, Wisconsin; Allamakee County, Iowa. It was in force for 65 min. 2 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: Jun 29, 2021, 3:25 PM CDT (20:25 UTC)
Expired: Jun 29, 2021, 4:30 PM CDT
In force: 65 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Allamakee County, IA, Crawford County, WI

The radar

The La Crosse radar (KARX), 76 km from the middle of the area, began a volume at 20:24 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 29, 4:04 PM CDT	FUNNEL CLOUD	4 Sw Eastman, WI
Jun 29, 4:38 PM CDT	FUNNEL CLOUD	3 N Wauzeka, WI	REPORTED AT HUSHER WAYSIDE PARK.

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.4 hours before the alert went out and 176 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: 403 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

819 
WFUS53 KARX 292025
TORARX
IAC005-WIC023-292130-
/O.NEW.KARX.TO.W.0001.210629T2025Z-210629T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
325 PM CDT Tue Jun 29 2021

The National Weather Service in La Crosse has issued a

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

* Until 430 PM CDT.
    
* At 325 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Harpers Ferry, or 10 miles northwest of Prairie Du
  Chien, moving east at 10 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...
  Harpers Ferry around 400 PM CDT.

Other locations impacted by this tornadic thunderstorm include County
Roads A 52 And X 52, Highway 35 And County D, Waterville, Eastman,
Harris Ridge, Limery Ridge and Petersburg.

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 4308 9132 4324 9137 4337 9085 4311 9078
      4311 9080 4310 9081 4308 9118
TIME...MOT...LOC 2025Z 266DEG 10KT 4317 9126 

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

$$

JSB

9 follow-up statements

008 
WWUS53 KARX 292038
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
338 PM CDT Tue Jun 29 2021

IAC005-WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Allamakee IA-Crawford WI-
338 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
SOUTHEASTERN ALLAMAKEE AND CENTRAL CRAWFORD COUNTIES...
    
At 333 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Harpers Ferry, or 9 miles northwest of Prairie Du
Chien, moving east at 10 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...
  Harpers Ferry around 355 PM CDT.


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 4308 9132 4324 9137 4337 9085 4311 9078
      4311 9080 4310 9081 4308 9118
TIME...MOT...LOC 2033Z 266DEG 10KT 4317 9123 

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

$$

JSB

644 
WWUS53 KARX 292039
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
339 PM CDT Tue Jun 29 2021

IAC005-WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Allamakee IA-Crawford WI-
339 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
SOUTHEASTERN ALLAMAKEE AND CENTRAL CRAWFORD COUNTIES...
    
At 339 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Harpers Ferry, or 8 miles north of Prairie Du Chien,
moving east at 10 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...
  Harpers Ferry around 350 PM CDT.

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 4325 9131 4337 9085 4311 9078 4311 9080
      4310 9081 4308 9122
TIME...MOT...LOC 2039Z 272DEG 11KT 4316 9120 

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

$$

JSB

882 
WWUS53 KARX 292049
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
349 PM CDT Tue Jun 29 2021

IAC005-WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Allamakee IA-Crawford WI-
349 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
SOUTHEASTERN ALLAMAKEE AND CENTRAL CRAWFORD COUNTIES...
    
At 348 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Harpers Ferry, or 8 miles north of Prairie Du Chien,
moving east at 10 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Allamakee and central Crawford Counties, including the
following locations... Highway 35 And County D, Seneca, Eastman,
Highway 27 And County F, Steuben, Harris Ridge and Petersburg.

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 4320 9122 4332 9084 4311 9078 4311 9090
      4309 9118
TIME...MOT...LOC 2048Z 266DEG 10KT 4316 9116 

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

$$

JSB

953 
WWUS53 KARX 292055
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
355 PM CDT Tue Jun 29 2021

IAC005-292104-
/O.CAN.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Allamakee IA-
355 PM CDT Tue Jun 29 2021

...THE TORNADO WARNING FOR SOUTHEASTERN ALLAMAKEE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4313 9118 4315 9115 4317 9114 4319 9112
      4320 9112 4323 9107 4325 9106 4332 9084
      4311 9078 4311 9090 4309 9118
TIME...MOT...LOC 2054Z 264DEG 10KT 4315 9112 

$$

WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
355 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CRAWFORD COUNTY...
    
At 354 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Harpers Ferry, or 7 miles north of Prairie Du Chien,
moving east at 10 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.

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 4313 9118 4315 9115 4317 9114 4319 9112
      4320 9112 4323 9107 4325 9106 4332 9084
      4311 9078 4311 9090 4309 9118
TIME...MOT...LOC 2054Z 264DEG 10KT 4315 9112 

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

$$

JSB

144 
WWUS53 KARX 292103
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
403 PM CDT Tue Jun 29 2021

WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
403 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CRAWFORD COUNTY...
    
At 403 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Harpers Ferry, or 7 miles north of Prairie Du Chien,
moving east at 10 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.

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 4313 9117 4315 9115 4317 9114 4319 9112
      4320 9112 4323 9107 4327 9083 4311 9078
      4311 9090
TIME...MOT...LOC 2103Z 266DEG 10KT 4315 9109 

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

$$

JSB

438 
WWUS53 KARX 292110
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
410 PM CDT Tue Jun 29 2021

WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
410 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CRAWFORD COUNTY...
        
At 408 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Harpers Ferry, or 8 miles northeast of Prairie Du
Chien, moving east at 10 mph.

HAZARD...Tornado.

SOURCE...Eastman Fire Department reported a funnel cloud southwest 
         of Eastman.

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.

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 4313 9117 4315 9115 4317 9114 4319 9112
      4320 9112 4323 9107 4327 9083 4311 9078
      4311 9090
TIME...MOT...LOC 2108Z 266DEG 10KT 4315 9107 

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

$$

JSB

938 
WWUS53 KARX 292119
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
419 PM CDT Tue Jun 29 2021

WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
419 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CRAWFORD COUNTY...
    
At 418 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southeast of Harpers Ferry, or 9 miles northeast
of Prairie Du Chien, moving east at 10 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.

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 9098 4313 9104 4318 9104 4320 9100
      4327 9083 4311 9078 4311 9090
TIME...MOT...LOC 2118Z 266DEG 10KT 4315 9103 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JSB

829 
WWUS53 KARX 292123
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
423 PM CDT Tue Jun 29 2021

WIC023-292130-
/O.CON.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
423 PM CDT Tue Jun 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CRAWFORD COUNTY...
    
At 423 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles east of Harpers Ferry, or 11 miles northeast of
Prairie Du Chien, moving east at 15 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.

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 4313 9098 4316 9101 4319 9098 4324 9082
      4311 9078 4311 9090
TIME...MOT...LOC 2123Z 270DEG 15KT 4315 9096 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JSB

648 
WWUS53 KARX 292127
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
427 PM CDT Tue Jun 29 2021

WIC023-292137-
/O.EXP.KARX.TO.W.0001.000000T0000Z-210629T2130Z/
Crawford WI-
427 PM CDT Tue Jun 29 2021

...THE TORNADO WARNING FOR CENTRAL CRAWFORD COUNTY WILL EXPIRE AT 430
PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 4313 9098 4316 9101 4319 9098 4324 9082
      4311 9078 4311 9090
TIME...MOT...LOC 2127Z 266DEG 10KT 4315 9095 

$$

JSB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 12:28 PM CDT	Areal Flood Advisory	ARX	Crawford	53 min
Jun 29, 1:21 PM CDT	Flash Flood Warning	ARX	Crawford	3 hr
Jun 29, 1:31 PM CDT	Special Weather Statement	ARX	Buffalo, Clark	59 min
Jun 29, 2:29 PM CDT	Special Weather Statement	ARX	Clark	31 min
Jun 29, 3:22 PM CDT	Areal Flood Advisory	ARX	Crawford	68 min
Jun 29, 4:29 PM CDT	Special Weather Statement	ARX	La Crosse	31 min
Jun 29, 4:59 PM CDT	Special Weather Statement	ARX	La Crosse, Monroe	61 min
Jun 29, 5:50 PM CDT	Special Weather Statement	ARX	Juneau	55 min
Jun 29, 2:50 PM CDT	Special Weather Statement	ARX	Allamakee	40 min

Nearby

Tornado Warnings in Wisconsin, 2021 Tornado Warnings in Iowa, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.