Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 34, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 23, 2021, 8:05 PM CDT for 4 counties in South Dakota. It was in force for 40 min. 3 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
- Jun 23, 2021, 8:05 PM CDT (01:05 UTC)
- Expired
- Jun 23, 2021, 8:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Aurora County, SD, Brule County, SD, Charles Mix County, SD, Douglas County, SD
The radar
The Sioux Falls radar (KFSD), 157 km from the middle of the area, began a volume at 01:04 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 |
|---|---|---|---|
| Jun 23, 8:12 PM CDT | HAIL 1 | 2 Sse Stickney, SD | ESTIMATED 50 MPH WINDS WITH THE QUARTER SIZE HAIL. |
| Jun 23, 8:23 PM CDT | HAIL 0.7 | Stickney, SD | |
| Jun 23, 8:23 PM CDT | HAIL 0.88 | Stickney, SD | DIME TO NICKEL SIZE HAIL REPORTED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.1 hours before the alert went out and 158 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.
- Mixed-layer CAPE
- 350 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 3369 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
414
WUUS53 KFSD 240105
SVRFSD
SDC003-015-023-043-240145-
/O.NEW.KFSD.SV.W.0034.210624T0105Z-210624T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
805 PM CDT Wed Jun 23 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southern Aurora County in south central South Dakota...
Northwestern Charles Mix County in south central South Dakota...
Northwestern Douglas County in south central South Dakota...
Southeastern Brule County in south central South Dakota...
* Until 845 PM CDT.
* At 805 PM CDT, a severe thunderstorm was located near Aurora
Center, or 17 miles southwest of Plankinton, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
New Holland around 815 PM CDT.
Aurora Center around 820 PM CDT.
Harrison around 830 PM CDT.
Corsica and Stickney around 845 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4341 9890 4359 9888 4364 9833 4339 9833
TIME...MOT...LOC 0105Z 266DEG 19KT 4352 9870
HAIL...1.00IN
WIND...60MPH
$$
Kalin1 follow-up statement
158
WWUS53 KFSD 240123
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
823 PM CDT Wed Jun 23 2021
SDC015-023-240133-
/O.CAN.KFSD.SV.W.0034.000000T0000Z-210624T0145Z/
Charles Mix SD-Brule SD-
823 PM CDT Wed Jun 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHARLES MIX AND
SOUTHEASTERN BRULE COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4341 9865 4361 9863 4364 9833 4339 9833
TIME...MOT...LOC 0123Z 266DEG 26KT 4353 9850
$$
SDC003-043-240145-
/O.CON.KFSD.SV.W.0034.000000T0000Z-210624T0145Z/
Aurora SD-Douglas SD-
823 PM CDT Wed Jun 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHEASTERN AURORA AND NORTHWESTERN DOUGLAS COUNTIES...
At 823 PM CDT, a severe thunderstorm was located near Aurora Center,
or 12 miles south of Plankinton, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Corsica.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4341 9865 4361 9863 4364 9833 4339 9833
TIME...MOT...LOC 0123Z 266DEG 26KT 4353 9850
HAIL...1.00IN
WIND...60MPH
$$
KalinThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 7:12 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 46 min |
| Jun 23, 7:46 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas, Hutchinson | 44 min |
| Jun 23, 8:20 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Clay, Davison, Douglas, Hanson and 3 more | 55 min |
| Jun 23, 8:36 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas, Hutchinson | 18 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2021Every severe thunderstorm warning in 2021
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.