Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 150, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 30, 2021, 7:57 PM CDT for 4 counties in South Dakota. It was in force for 48 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
- Aug 30, 2021, 7:57 PM CDT (00:57 UTC)
- Expired
- Aug 30, 2021, 8:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hutchinson County, SD, McCook County, SD, Minnehaha County, SD, Turner County, SD
The radar
The Sioux Falls radar (KFSD), 54 km from the middle of the area, began a volume at 01:01 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 |
|---|---|---|---|
| Aug 30, 7:58 PM CDT | HAIL 1 | 6 S Bridgewater, SD | CORRECTS PREVIOUS HAIL REPORT FROM 6 S BRIDGEWATER. MOSTLY PEA SIZED HAIL, BUT A FEW QUARTER SIZED STONES, AND HEAVY RAIN. |
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, 1.0 hours before the alert went out and 183 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
- 205 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1953 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
537
WUUS53 KFSD 310057
SVRFSD
SDC067-087-099-125-310145-
/O.NEW.KFSD.SV.W.0150.210831T0057Z-210831T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
757 PM CDT Mon Aug 30 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southwestern Minnehaha County in southeastern South Dakota...
Southeastern McCook County in southeastern South Dakota...
Turner County in southeastern South Dakota...
Northeastern Hutchinson County in southeastern South Dakota...
* Until 845 PM CDT.
* At 757 PM CDT, a severe thunderstorm was located near Dolton, or 14
miles west of Parker, 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.
* This severe thunderstorm will be near...
Freeman around 800 PM CDT.
Marion and Monroe around 815 PM CDT.
Parker around 830 PM CDT.
Hurley around 840 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4345 9762 4356 9750 4354 9692 4316 9714
TIME...MOT...LOC 0057Z 291DEG 24KT 4344 9743
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BP3 follow-up statements
714
WWUS53 KFSD 310115
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
815 PM CDT Mon Aug 30 2021
SDC087-099-310124-
/O.CAN.KFSD.SV.W.0150.000000T0000Z-210831T0145Z/
Minnehaha SD-McCook SD-
815 PM CDT Mon Aug 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MINNEHAHA AND
SOUTHEASTERN MCCOOK COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4335 9743 4350 9740 4349 9695 4319 9712
TIME...MOT...LOC 0114Z 291DEG 24KT 4340 9728
$$
SDC067-125-310145-
/O.CON.KFSD.SV.W.0150.000000T0000Z-210831T0145Z/
Turner SD-Hutchinson SD-
815 PM CDT Mon Aug 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHERN TURNER AND EAST CENTRAL HUTCHINSON COUNTIES...
At 814 PM CDT, a severe thunderstorm was located over Marion, or 7
miles west of Parker, 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.
This severe storm will be near...
Parker around 830 PM CDT.
Hurley around 840 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.
&&
LAT...LON 4335 9743 4350 9740 4349 9695 4319 9712
TIME...MOT...LOC 0114Z 291DEG 24KT 4340 9728
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BP278
WWUS53 KFSD 310130
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
830 PM CDT Mon Aug 30 2021
SDC067-310139-
/O.CAN.KFSD.SV.W.0150.000000T0000Z-210831T0145Z/
Hutchinson SD-
830 PM CDT Mon Aug 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HUTCHINSON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
LAT...LON 4334 9726 4344 9720 4344 9698 4326 9708
TIME...MOT...LOC 0129Z 291DEG 24KT 4336 9715
$$
SDC125-310145-
/O.CON.KFSD.SV.W.0150.000000T0000Z-210831T0145Z/
Turner SD-
830 PM CDT Mon Aug 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN TURNER COUNTY...
At 829 PM CDT, a severe thunderstorm was located over Parker, 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...
Hurley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Sioux Falls.
&&
LAT...LON 4334 9726 4344 9720 4344 9698 4326 9708
TIME...MOT...LOC 0129Z 291DEG 24KT 4336 9715
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BP402
WWUS53 KFSD 310136
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
836 PM CDT Mon Aug 30 2021
SDC125-310146-
/O.EXP.KFSD.SV.W.0150.000000T0000Z-210831T0145Z/
Turner SD-
836 PM CDT Mon Aug 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TURNER COUNTY
WILL EXPIRE AT 845 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
and gusty winds are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sioux Falls.
LAT...LON 4334 9726 4344 9720 4344 9698 4326 9708
TIME...MOT...LOC 0136Z 291DEG 24KT 4335 9710
$$
BPThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 7:29 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 46 min |
| Aug 30, 11:19 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Sanborn | 41 min |
| Aug 31, 12:00 AM CDT | Flash Flood Warning | FSD | Aurora, Brule | 3 hr |
| Aug 31, 12:05 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas | 40 min |
| Aug 31, 12:15 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson | 45 min |
| Aug 31, 1:26 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Gregory | 49 min |
| Aug 31, 2:14 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 31 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.