Alert archive / Iowa / Tornado Warnings in 2022

Tornado Warning 21, NWS Des Moines, IA

April 12, 20224 counties in Iowa

NWS Des Moines, IA issued this tornado warning at Apr 12, 2022, 6:54 PM CDT for 4 counties in Iowa. It was in force for 51 min. 5 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, 6:54 PM CDT (23:54 UTC)
Expired: Apr 12, 2022, 7:45 PM CDT
In force: 51 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Observed
Damage threat: Considerable
Hail: 1.5 in

Counties Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 125 km from the middle of the area, began a volume at 23:57 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 12, 6:56 PM CDT	HAIL 1	2 Nne Bode, IA	DIME SIZED HAIL OCCURRED SHORTLY BEFORE QUARTER SIZE HAIL FELL.
Apr 12, 7:15 PM CDT	TSTM WND DMG	1 S Lu Verne, IA	12-15 POLES DOWN SOUTH OF LUVERNE. TIME ESTIMATED BY RADAR.
Apr 12, 7:28 PM CDT	TSTM WND GST 60	3 Ssw Corwith, IA	PERSONAL WEATHER STATION.
Apr 12, 7:37 PM CDT	HAIL 1.75	Kanawha, IA	TIME ESTIMATED FROM RADAR.
Apr 12, 7:51 PM CDT	TSTM WND DMG	Kanawha, IA	CORRECTS PREVIOUS TIME FOR TSTM WND DMG REPORT FROM KANAWHA. TREES DOWN IN KANAWHA.

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 12, 5:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 223 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: 2105 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 298 m²/s²
0-3 km storm-relative helicity: 309 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

245 
WFUS53 KDMX 122354
TORDMX
IAC081-091-109-197-130045-
/O.NEW.KDMX.TO.W.0021.220412T2354Z-220413T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
654 PM CDT Tue Apr 12 2022

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Northern Wright County in north central Iowa...
  Southeastern Kossuth County in north central Iowa...
  Southwestern Hancock County in north central Iowa...
  Humboldt County in north central Iowa...

* Until 745 PM CDT.

* At 654 PM CDT, a confirmed large and extremely dangerous tornado
  was located 7 miles northeast of Dakota City, moving northeast at
  40 mph.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

  HAZARD...Damaging tornado.

  SOURCE...Weather spotters 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.

* Locations impacted include...
  Clarion, Dakota City, Humboldt, Belmond, Britt, Elm Lake, Kanawha,
  Goldfield, Gilmore City, Livermore, Corwith, Bode, Lu Verne,
  Renwick, Thor, Rowan, Goodell, Rutland, Bradgate and St. Joseph.

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 4288 9350 4274 9350 4265 9444 4281 9444
      4316 9381
TIME...MOT...LOC 2354Z 234DEG 37KT 4282 9414 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...1.50 IN

$$

Krull

4 follow-up statements

151 
WWUS53 KDMX 130005
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
705 PM CDT Tue Apr 12 2022

IAC081-091-109-197-130045-
/O.CON.KDMX.TO.W.0021.000000T0000Z-220413T0045Z/
Wright IA-Kossuth IA-Hancock IA-Humboldt IA-
705 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHERN
WRIGHT...SOUTHEASTERN KOSSUTH...SOUTHWESTERN HANCOCK AND NORTHERN
HUMBOLDT COUNTIES...
    
At 705 PM CDT, a large and extremely dangerous tornado was located 12
miles northeast of Dakota City, moving northeast at 50 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar indicated rotation.

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.

Locations impacted include...
Humboldt, Belmond, Britt, Elm Lake, Kanawha, Livermore, Corwith,
Bode, Lu Verne, Renwick, Goodell, Rutland, St. Joseph, Hardy,
Hutchins, Belmond Municipal Airport and Humboldt Municipal Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is developing. 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 4288 9350 4277 9350 4273 9437 4283 9440
      4316 9381
TIME...MOT...LOC 0005Z 238DEG 41KT 4287 9405 

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...1.50 IN

$$

Krull

040 
WWUS53 KDMX 130017
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
717 PM CDT Tue Apr 12 2022

IAC081-091-109-197-130045-
/O.CON.KDMX.TO.W.0021.000000T0000Z-220413T0045Z/
Wright IA-Kossuth IA-Hancock IA-Humboldt IA-
717 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHERN
WRIGHT...SOUTHEASTERN KOSSUTH...SOUTHWESTERN HANCOCK AND NORTHEASTERN
HUMBOLDT COUNTIES...
    
At 716 PM CDT, a severe thunderstorm capable of producing a tornado
was located 15 miles southwest of Britt, or 15 miles southeast of
Algona, moving northeast at 50 mph.

HAZARD...Tornado and half dollar 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.

Locations impacted include...
  Britt.

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 4288 9350 4283 9350 4274 9423 4292 9424
      4316 9381
TIME...MOT...LOC 0016Z 235DEG 44KT 4293 9400 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN

$$

Krull

548 
WWUS53 KDMX 130022
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
722 PM CDT Tue Apr 12 2022

IAC081-091-109-197-130045-
/O.CON.KDMX.TO.W.0021.000000T0000Z-220413T0045Z/
Wright IA-Kossuth IA-Hancock IA-Humboldt IA-
722 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHERN
WRIGHT...SOUTHEASTERN KOSSUTH...SOUTHWESTERN HANCOCK AND NORTHEASTERN
HUMBOLDT COUNTIES...
    
At 722 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles southwest of Britt, or 17 miles southeast of
Algona, moving northeast at 45 mph.

HAZARD...Tornado and golf ball 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.

Locations impacted include...
Belmond, Britt, Kanawha, Livermore, Corwith, Lu Verne, Renwick,
Goodell, Hardy, Hutchins and Belmond Municipal Airport.

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 4288 9350 4283 9350 4275 9417 4295 9418
      4316 9381
TIME...MOT...LOC 0022Z 234DEG 37KT 4297 9392 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

Krull

148 
WWUS53 KDMX 130035
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
735 PM CDT Tue Apr 12 2022

IAC091-109-130044-
/O.CAN.KDMX.TO.W.0021.000000T0000Z-220413T0045Z/
Kossuth IA-Humboldt IA-
735 PM CDT Tue Apr 12 2022

...THE TORNADO WARNING FOR SOUTHEASTERN KOSSUTH AND NORTHEASTERN
HUMBOLDT 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 1000 PM CDT for north central
Iowa.

LAT...LON 4288 9350 4281 9396 4307 9397 4316 9381
TIME...MOT...LOC 0034Z 240DEG 47KT 4295 9383 

$$

IAC081-197-130045-
/O.CON.KDMX.TO.W.0021.000000T0000Z-220413T0045Z/
Wright IA-Hancock IA-
735 PM CDT Tue Apr 12 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHERN
WRIGHT AND SOUTHWESTERN HANCOCK COUNTIES...
    
At 734 PM CDT, a confirmed tornado was located 10 miles south of
Britt, or 15 miles north of Clarion, moving northeast at 55 mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Weather spotters 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.

Locations impacted include...
Britt, Kanawha, Corwith, Goodell and Hutchins. 

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 4288 9350 4281 9396 4307 9397 4316 9381
TIME...MOT...LOC 0034Z 240DEG 47KT 4295 9383 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

Krull

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 10:24 AM CDT	Wind Advisory	DMX	Boone, Calhoun, Carroll, Cerro Gordo, Crawford, Emmet and 16 more	4 hr
Apr 12, 5:00 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Sac	45 min
Apr 12, 5:36 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	24 min
Apr 12, 5:46 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Kossuth, Palo Alto, Pocahontas	44 min
Apr 12, 5:52 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	23 min
Apr 12, 5:59 PM CDT	Tornado Warning	DMX	Calhoun, Humboldt, Pocahontas	31 min
Apr 12, 6:23 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	DMX	Humboldt, Kossuth, Pocahontas	52 min
Apr 12, 6:38 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto, Pocahontas	37 min
Apr 12, 6:48 PM CDT	Tornado Warning	DMX	Pocahontas	27 min

Nearby

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