Alert archive / Iowa / Tornado Warnings in 2022

Tornado Warning 13, NWS Quad Cities, IA

May 25, 2022Des Moines County, Louisa County, Iowa

NWS Quad Cities, IA issued this tornado warning at May 25, 2022, 6:40 PM CDT for Des Moines County, Louisa County, Iowa. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 25, 2022, 6:40 PM CDT (23:40 UTC)
Expired: May 25, 2022, 7:15 PM CDT
In force: 35 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Des Moines County, IA, Louisa County, IA

The radar

The Quad Cities radar (KDVN), 85 km from the middle of the area, began a volume at 23:40 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.7 hours before the alert went out and 90 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: 667 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

364 
WFUS53 KDVN 252340
TORDVN
IAC057-115-260015-
/O.NEW.KDVN.TO.W.0013.220525T2340Z-220526T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
640 PM CDT Wed May 25 2022

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Northwestern Des Moines County in southeastern Iowa...
  Southeastern Louisa County in southeastern Iowa...

* Until 715 PM CDT.
    
* At 640 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Big Hollow Recreation Area, or 11 miles northwest
  of Burlington, moving north at 35 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...
  Mediapolis, Kossuth and Yarmouth around 650 PM CDT.
  Garland and Northfield around 655 PM CDT.
  Morning Sun, Marsh and Elrick Junction around 700 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Amber, Virginia Grove Recreation Area and Wapello.

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 4089 9114 4092 9133 4117 9136 4118 9105
TIME...MOT...LOC 2340Z 181DEG 28KT 4094 9125 

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

$$

DC

3 follow-up statements

791 
WWUS53 KDVN 252352
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
652 PM CDT Wed May 25 2022

IAC057-115-260015-
/O.CON.KDVN.TO.W.0013.000000T0000Z-220526T0015Z/
Des Moines IA-Louisa IA-
652 PM CDT Wed May 25 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR NORTH
CENTRAL DES MOINES AND SOUTHEASTERN LOUISA COUNTIES...
    
At 652 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Garland, or 8 miles south of Wapello, moving north
at 35 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...
  Morning Sun around 655 PM CDT.
  Amber, Elrick Junction and Virginia Grove Recreation Area around 
  700 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Toolesboro and Wapello.

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 4101 9113 4102 9132 4117 9136 4118 9105
TIME...MOT...LOC 2352Z 182DEG 29KT 4106 9122 

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

$$

DC

658 
WWUS53 KDVN 260000
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
700 PM CDT Wed May 25 2022

IAC057-260009-
/O.CAN.KDVN.TO.W.0013.000000T0000Z-220526T0015Z/
Des Moines IA-
700 PM CDT Wed May 25 2022

...THE TORNADO WARNING FOR NORTH CENTRAL DES MOINES COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled.

LAT...LON 4108 9112 4108 9131 4117 9132 4118 9117
      4117 9111
TIME...MOT...LOC 2359Z 181DEG 28KT 4111 9121 

$$

IAC115-260015-
/O.CON.KDVN.TO.W.0013.000000T0000Z-220526T0015Z/
Louisa IA-
700 PM CDT Wed May 25 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR SOUTH
CENTRAL LOUISA COUNTY...
    
At 659 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Amber, or near Wapello, moving north at 30 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...
  Wapello around 710 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 4108 9112 4108 9131 4117 9132 4118 9117
      4117 9111
TIME...MOT...LOC 2359Z 181DEG 28KT 4111 9121 

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

$$

DC

666 
WWUS53 KDVN 260006
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
706 PM CDT Wed May 25 2022

IAC115-260016-
/O.EXP.KDVN.TO.W.0013.000000T0000Z-220526T0015Z/
Louisa IA-
706 PM CDT Wed May 25 2022

...THE TORNADO WARNING FOR SOUTH CENTRAL LOUISA COUNTY WILL EXPIRE AT
715 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 4108 9112 4108 9131 4117 9132 4118 9117
      4117 9111
TIME...MOT...LOC 0006Z 181DEG 28KT 4116 9121 

$$

DC

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 5:57 PM CDT	Special Weather Statement	DVN	Des Moines, Lee	33 min
May 25, 6:27 PM CDT	Tornado Warning	DVN	Des Moines	18 min
May 25, 6:30 PM CDT	Tornado Warning	DVN	Henry	15 min
May 25, 6:42 PM CDT	Tornado Warning	DVN	Henry, Louisa, Washington	17 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.