Alert archive / Iowa / Tornado Warnings in 2022

Tornado Warning 3, NWS La Crosse, WI

April 12, 2022Howard County, Mitchell County, Iowa; Fillmore County, Mower County, Minnesota

NWS La Crosse, WI issued this tornado warning at Apr 12, 2022, 10:37 PM CDT for Howard County, Mitchell County, Iowa; Fillmore County, Mower County, Minnesota. It was in force for 23 min. 6 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 12, 2022, 10:37 PM CDT (03:37 UTC)
Expired
Apr 12, 2022, 11:00 PM CDT
In force
23 min
Issued by
NWS La Crosse, WI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Howard County, IA, Mitchell County, IA, Fillmore County, MN, Mower County, MN

The radar

The La Crosse radar (KARX), 127 km from the middle of the area, began a volume at 03:41 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

TimeReportWhereRemark
Apr 12, 10:42 PM CDTHAIL 1Taopi, MN
Apr 12, 10:44 PM CDTTORNADOTaopi, MN*** 2 INJ *** EF-2. THIS TORNADO FORMED SOUTHWEST OF TAOPI AND QUICKLY INTENSIFIED CAUSING SIGNIFICANT DAMAGE TO THE SMALL TOWN. MOST BUILDINGS WERE DAMAGED AND SEVERAL WERE DESTROYED. SEVERAL CARS WERE ALSO TOSSED. A TOTAL OF 2 INJURIES WERE REPORTED AND SEVE
Apr 12, 10:44 PM CDTTORNADOTaopi, MN*** 2 INJ *** THIS TORNADO FORMED SOUTHWEST OF TAOPI AND QUICKLY INTENSIFIED CAUSING SIGNIFICANT DAMAGE TO THE SMALL TOWN. MOST BUILDINGS WERE DAMAGED AND SEVERAL WERE DESTROYED. SEVERAL CARS WERE ALSO TOSSED. A TOTAL OF 2 INJURIES WERE REPORTED AND SEVERAL FA
Apr 12, 10:48 PM CDTTSTM WND DMG1 Sw Taopi, MNROOF DAMAGE TO RESIDENCE JUST SOUTHWEST OF TOWN. POSSIBLE TORNADO.
Apr 12, 10:48 PM CDTTSTM WND DMGTaopi, MNANOTHER REPORT OF HOME DAMAGE IN TOWN
Apr 12, 10:48 PM CDTTSTM WND DMGTaopi, MN*** 2 INJ *** CORRECTS PREVIOUS TSTM WND DMG REPORT FROM TAOPI. HOUSE SLID OFF FOUNDATION, ROOFS OFF HOUSES IN AND AROUND TOWN. GRAIN BINS DESTROYED. HIGH TRANSMISSION POWER LINES SNAPPED. DAMAGE TRACK SEVERAL MILES LONG GOES THROUGH THE WESTERN SIDE OF TOWN.

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.

IssuedProductOfficeLasted
Apr 12, 7:54 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.6 hours before the alert went out and 168 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2022-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2022-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 710 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
992 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
710 m²/s²
0-3 km storm-relative helicity
827 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

062 
WFUS53 KARX 130337
TORARX
IAC089-131-MNC045-099-130400-
/O.NEW.KARX.TO.W.0003.220413T0337Z-220413T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
1037 PM CDT Tue Apr 12 2022

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  Northeastern Mitchell County in north central Iowa...
  Northwestern Howard County in northeastern Iowa...
  Southeastern Mower County in southeastern Minnesota...
  Southwestern Fillmore County in southeastern Minnesota...

* Until 1100 PM CDT.
    
* At 1037 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Stacyville, or 11 miles north of Osage,
  moving northeast at 35 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...
  Adams around 1050 PM CDT.
  Le Roy around 1100 PM CDT.

Other locations impacted by this tornadic thunderstorm include Lake
Louise State Park, Chester, Meyer, Taopi, County Roads 4 And 3,
Johnsburg and County Roads 4 And 8.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4338 9284 4347 9290 4371 9253 4349 9236
TIME...MOT...LOC 0337Z 242DEG 31KT 4345 9277 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Skow
2 follow-up statements
269 
WWUS53 KARX 130346
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1046 PM CDT Tue Apr 12 2022

IAC089-131-MNC045-099-130400-
/O.CON.KARX.TO.W.0003.000000T0000Z-220413T0400Z/
Mitchell IA-Howard IA-Mower MN-Fillmore MN-
1046 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
NORTHEASTERN MITCHELL...NORTHWESTERN HOWARD...SOUTHEASTERN MOWER AND
SOUTHWESTERN FILLMORE COUNTIES...
    
At 1046 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Adams, or 16 miles southeast of Austin, moving
northeast at 50 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...
  Le Roy around 1050 PM CDT.

Other locations impacted by this tornadic thunderstorm include Lake
Louise State Park, Chester, Meyer, Taopi, County Roads 4 And 3,
County Roads 4 And 8 and Bailey.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4342 9272 4356 9277 4371 9253 4349 9236
TIME...MOT...LOC 0346Z 221DEG 44KT 4356 9267 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Skow
325 
WWUS53 KARX 130354
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1054 PM CDT Tue Apr 12 2022

IAC089-131-MNC045-130403-
/O.CAN.KARX.TO.W.0003.000000T0000Z-220413T0400Z/
Mitchell IA-Howard IA-Fillmore MN-
1054 PM CDT Tue Apr 12 2022

...THE TORNADO WARNING FOR NORTHEASTERN MITCHELL...NORTHWESTERN
HOWARD AND SOUTHWESTERN FILLMORE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for southeastern
Minnesota.

LAT...LON 4352 9264 4360 9271 4363 9266 4371 9253
      4365 9249 4361 9246
TIME...MOT...LOC 0353Z 222DEG 36KT 4361 9261 

$$

MNC099-130400-
/O.CON.KARX.TO.W.0003.000000T0000Z-220413T0400Z/
Mower MN-
1054 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
SOUTHEASTERN MOWER COUNTY...
    
At 1053 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Adams, or 18 miles east of Austin, 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Mower County, including the following locations...
County Roads 4 And 8 and Taopi.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4352 9264 4360 9271 4363 9266 4371 9253
      4365 9249 4361 9246
TIME...MOT...LOC 0353Z 222DEG 36KT 4361 9261 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Skow

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 8:30 PM CDTSevere Thunderstorm Warning Considerable damage threatARXFloyd, Mitchell60 min
Apr 12, 8:46 PM CDTTornado WarningARXFloyd44 min
Apr 12, 9:08 PM CDTTornado WarningARXMitchell37 min
Apr 12, 9:26 PM CDTSevere Thunderstorm Warning Considerable damage threatARXHoward, Mitchell49 min
Apr 12, 9:56 PM CDTSevere Thunderstorm WarningARXHoward, Mitchell49 min
Apr 12, 10:18 PM CDTSevere Thunderstorm WarningARXMitchell42 min
Apr 12, 10:26 PM CDTFlash Flood WarningARXMitchell3 hr
Apr 12, 10:30 PM CDTSevere Thunderstorm WarningARXChickasaw, Floyd, Howard, Mitchell60 min
Apr 12, 11:07 PM CDTTornado Warning Tornado observedARXHoward, Mitchell23 min
Apr 12, 11:15 PM CDTSevere Thunderstorm WarningARXChickasaw, Fayette, Howard, Winneshiek45 min
Apr 12, 11:27 PM CDTTornado WarningARXHoward, Winneshiek17 min
Apr 12, 11:51 PM CDTSevere Thunderstorm WarningARXAllamakee, Winneshiek39 min
Apr 13, 12:32 AM CDTSpecial Weather StatementARXClayton28 min
Apr 13, 2:30 PM CDTWind AdvisoryARXAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more29 hr
Apr 12, 11:02 PM CDTTornado WarningARXFillmore, Mower28 min
Apr 12, 11:19 PM CDTSevere Thunderstorm Warning Considerable damage threatARXFillmore, Houston, Olmsted, Winona41 min
Apr 12, 11:23 PM CDTTornado WarningARXFillmore, Olmsted, Winona37 min
Apr 12, 11:43 PM CDTSevere Thunderstorm WarningARXFillmore, Houston, Winona47 min
Apr 13, 2:02 AM CDTRiver Flood WarningARXOlmsted, Winona7 hr

Nearby

Tornado Warnings in Iowa, 2022Tornado Warnings in Minnesota, 2022Every tornado warning in 2022Tornadoes in 2022

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.