Alert archive / South Dakota / Tornado Warnings in 2022

Tornado Warning 3, NWS Sioux Falls, SD

May 11, 2022Bon Homme County, Hutchinson County, Yankton County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at May 11, 2022, 2:36 PM CDT for Bon Homme County, Hutchinson County, Yankton County, South Dakota. It was in force for 24 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 11, 2022, 2:36 PM CDT (19:36 UTC)
Expired: May 11, 2022, 3:00 PM CDT
In force: 24 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Bon Homme County, SD, Hutchinson County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 90 km from the middle of the area, began a volume at 19:35 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 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

Aberdeen, SD (KABR), launched 12:00Z, 7.6 hours before the alert went out and 211 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: 2158 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

530 
WFUS53 KFSD 111936
TORFSD
SDC009-067-135-112000-
/O.NEW.KFSD.TO.W.0003.220511T1936Z-220511T2000Z/

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

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Northeastern Bon Homme County in southeastern South Dakota...
  Northwestern Yankton County in southeastern South Dakota...
  Southeastern Hutchinson County in southeastern South Dakota...

* Until 300 PM CDT.
    
* At 235 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles northwest of Utica, or 13 miles east of
  Tyndall, moving north at 30 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...
  Scotland around 250 PM CDT.

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

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4299 9756 4299 9768 4324 9776 4324 9747
TIME...MOT...LOC 1935Z 179DEG 25KT 4306 9761 

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

$$

SST

2 follow-up statements

403 
WWUS53 KFSD 111946
SVSFSD

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

SDC009-067-135-112000-
/O.CON.KFSD.TO.W.0003.000000T0000Z-220511T2000Z/
Bon Homme SD-Yankton SD-Hutchinson SD-
246 PM CDT Wed May 11 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM CDT FOR
NORTHEASTERN BON HOMME...NORTHWESTERN YANKTON AND SOUTHEASTERN
HUTCHINSON COUNTIES...
    
At 246 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Scotland, or 16 miles northeast of Tyndall, moving
north at 30 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.

Locations impacted include...
  Menno.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4308 9753 4308 9770 4324 9776 4324 9747
TIME...MOT...LOC 1946Z 179DEG 25KT 4314 9761 

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

$$

SST

760 
WWUS53 KFSD 111955
SVSFSD

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

SDC009-067-135-112004-
/O.EXP.KFSD.TO.W.0003.000000T0000Z-220511T2000Z/
Bon Homme SD-Yankton SD-Hutchinson SD-
255 PM CDT Wed May 11 2022

...THE TORNADO WARNING FOR NORTHEASTERN BON HOMME...NORTHWESTERN
YANKTON AND SOUTHEASTERN HUTCHINSON COUNTIES WILL EXPIRE AT 300 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 small hail
and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until 900 PM CDT for southeastern
South Dakota.

LAT...LON 4308 9753 4308 9770 4324 9776 4324 9747
TIME...MOT...LOC 1954Z 179DEG 25KT 4320 9761 

$$

SST

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:06 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	24 min
May 11, 7:20 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	40 min
May 11, 7:39 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Turner, Yankton	40 min
May 11, 9:29 AM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner, Minnehaha	31 min
May 11, 10:12 AM CDT	Severe Thunderstorm Warning	FSD	Lake	33 min
May 11, 10:24 AM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	36 min
May 11, 3:11 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Minnehaha, Moody	49 min
May 11, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, McCook, Turner	45 min

Nearby

Tornado Warnings in South Dakota, 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.