Alert archive / Iowa / Tornado Warnings in 2022

Tornado Warning 5, NWS Sioux Falls, SD

May 11, 2022Jackson County, Minnesota; Dickinson County, Osceola County, Iowa

NWS Sioux Falls, SD issued this tornado warning at May 11, 2022, 5:49 PM CDT for Jackson County, Minnesota; Dickinson County, Osceola County, Iowa. It was in force for 26 min. 1 report 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: May 11, 2022, 5:49 PM CDT (22:49 UTC)
Expired: May 11, 2022, 6:15 PM CDT
In force: 26 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Dickinson County, IA, Osceola County, IA, Jackson County, MN

The radar

The Sioux Falls radar (KFSD), 113 km from the middle of the area, began a volume at 22:50 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
May 11, 6:13 PM CDT	TSTM WND GST 65	Lake Park, IA

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
May 11, 1:15 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 209 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: 1699 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

811 
WFUS53 KFSD 112249
TORFSD
IAC059-143-MNC063-112315-
/O.NEW.KFSD.TO.W.0005.220511T2249Z-220511T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
549 PM CDT Wed May 11 2022

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Northeastern Osceola County in northwestern Iowa...
  Northern Dickinson County in northwestern Iowa...
  Southwestern Jackson County in southwestern Minnesota...

* Until 615 PM CDT.
    
* At 548 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Harris, or 15 miles east of Sibley, moving
  northeast at 55 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...
  Lake Park around 555 PM CDT.
  Okoboji around 600 PM CDT.
  Spirit Lake and Orleans around 605 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Lakefield.

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 4331 9551 4339 9560 4370 9516 4348 9491
TIME...MOT...LOC 2248Z 231DEG 47KT 4340 9544 

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

$$

SST

2 follow-up statements

482 
WWUS53 KFSD 112258
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
558 PM CDT Wed May 11 2022

IAC059-143-MNC063-112315-
/O.CON.KFSD.TO.W.0005.000000T0000Z-220511T2315Z/
Osceola IA-Dickinson IA-Jackson MN-
558 PM CDT Wed May 11 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
NORTHEASTERN OSCEOLA...NORTHWESTERN DICKINSON AND SOUTHWESTERN
JACKSON COUNTIES...
    
At 558 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Lake Park, or 10 miles northwest of Spirit Lake,
moving northeast at 55 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.

Locations impacted include...
  Lakefield.

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 4344 9538 4349 9546 4370 9516 4356 9501
TIME...MOT...LOC 2258Z 231DEG 47KT 4348 9530 

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

$$

SST

381 
WWUS53 KFSD 112313
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
613 PM CDT Wed May 11 2022

IAC059-143-MNC063-112323-
/O.EXP.KFSD.TO.W.0005.000000T0000Z-220511T2315Z/
Osceola IA-Dickinson IA-Jackson MN-
613 PM CDT Wed May 11 2022

...THE TORNADO WARNING FOR NORTHEASTERN OSCEOLA...NORTHWESTERN
DICKINSON AND SOUTHWESTERN JACKSON COUNTIES WILL EXPIRE AT 615 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.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until 900 PM CDT for northwestern
Iowa...and southwestern Minnesota.

LAT...LON 4344 9538 4349 9546 4370 9516 4356 9501
TIME...MOT...LOC 2313Z 231DEG 47KT 4359 9511 

$$

SST

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 11:44 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lyon	31 min
May 11, 12:23 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon	37 min
May 11, 12:35 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	10 min
May 11, 4:07 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	23 min
May 11, 5:26 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson, Murray, Nobles	49 min
May 11, 5:36 PM CDT	Tornado Warning	FSD	Cottonwood	24 min
May 11, 5:56 PM CDT	Tornado Warning	FSD	Cottonwood	19 min
May 11, 6:09 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson	36 min
May 11, 6:18 PM CDT	Tornado Warning	FSD	Cottonwood, Jackson	27 min
May 11, 6:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Cottonwood, Jackson	36 min

Nearby

Tornado Warnings in Iowa, 2022 Tornado Warnings in Minnesota, 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.