Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 3, 2021, 5:35 PM MDT for 4 counties in South Dakota. It was in force for 40 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
- Jul 3, 2021, 5:35 PM MDT (23:35 UTC)
- Expired
- Jul 3, 2021, 6:15 PM MDT
- In force
- 40 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Corson County, SD, Dewey County, SD, Potter County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 157 km from the middle of the area, began a volume at 23:36 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 |
|---|---|---|---|
| Jul 3, 5:40 PM MDT | HAIL 1 | 7 Wnw Swan Creek Rec Ar, SD | HAIL LASTED FOR HALF AN HOUR, SOME UP TO QUARTER SIZE TOWARDS THE END. RADAR ESTIMATED TIME. |
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 12:00Z, 11.6 hours before the alert went out and 164 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1879 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
704
WUUS53 KABR 032335
SVRABR
SDC031-041-107-129-040015-
/O.NEW.KABR.SV.W.0046.210703T2335Z-210704T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
635 PM CDT Sat Jul 3 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Southeastern Corson County in north central South Dakota...
Northwestern Potter County in north central South Dakota...
Northeastern Dewey County in north central South Dakota...
Southwestern Walworth County in north central South Dakota...
* Until 715 PM CDT/615 PM MDT/.
* At 635 PM CDT/535 PM MDT/, a severe thunderstorm was located over
Blackfoot, or 14 miles south of Mobridge, moving east at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Swan Creek Rec Area and New Everets Resort.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4517 10052 4550 10056 4550 10025 4518 10020
TIME...MOT...LOC 2335Z 258DEG 11KT 4533 10041
HAIL...1.25IN
WIND...60MPH
$$
SD2 follow-up statements
676
WWUS53 KABR 032347
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
647 PM CDT Sat Jul 3 2021
SDC031-032356-
/O.CAN.KABR.SV.W.0046.000000T0000Z-210704T0015Z/
Corson SD-
647 PM CDT Sat Jul 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CORSON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4518 10020 4517 10052 4547 10056 4547 10034
4550 10036 4550 10025
TIME...MOT...LOC 2346Z 258DEG 11KT 4534 10036
$$
SDC041-107-129-040015-
/O.CON.KABR.SV.W.0046.000000T0000Z-210704T0015Z/
Potter SD-Dewey SD-Walworth SD-
647 PM CDT Sat Jul 3 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM
CDT/615 PM MDT/ FOR NORTHWESTERN POTTER...NORTHEASTERN DEWEY AND
SOUTHWESTERN WALWORTH COUNTIES...
At 646 PM CDT/546 PM MDT/, a severe thunderstorm was located over
northeastern Lake Oahe, or 14 miles south of Mobridge, moving east at
15 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
New Everets Resort, Swan Creek Rec Area, Blackfoot and Lake Oahe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4518 10020 4517 10052 4547 10056 4547 10034
4550 10036 4550 10025
TIME...MOT...LOC 2346Z 258DEG 11KT 4534 10036
HAIL...1.50IN
WIND...60MPH
$$
SD343
WWUS53 KABR 040001
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
701 PM CDT Sat Jul 3 2021
SDC107-040010-
/O.CAN.KABR.SV.W.0046.000000T0000Z-210704T0015Z/
Potter SD-
701 PM CDT Sat Jul 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN POTTER COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4525 10021 4525 10026 4523 10026 4520 10028
4519 10027 4518 10028 4517 10052 4547 10056
4547 10034 4550 10036 4550 10025
TIME...MOT...LOC 0000Z 257DEG 7KT 4545 10036
$$
SDC041-129-040015-
/O.CON.KABR.SV.W.0046.000000T0000Z-210704T0015Z/
Dewey SD-Walworth SD-
701 PM CDT Sat Jul 3 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM
CDT/615 PM MDT/ FOR NORTHEASTERN DEWEY AND SOUTHWESTERN WALWORTH
COUNTIES...
At 700 PM CDT/600 PM MDT/, a severe thunderstorm was located near New
Everets Resort, or 7 miles southeast of Mobridge, moving east at 10
mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
New Everets Resort, Swan Creek Rec Area, Blackfoot and Lake Oahe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4525 10021 4525 10026 4523 10026 4520 10028
4519 10027 4518 10028 4517 10052 4547 10056
4547 10034 4550 10036 4550 10025
TIME...MOT...LOC 0000Z 257DEG 7KT 4545 10036
HAIL...1.50IN
WIND...60MPH
$$
SDThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 1:57 AM MDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 15 hr |
| Jul 3, 4:05 PM MDT | Special Weather Statement | ABR | Jones | 25 min |
| Jul 3, 4:36 PM MDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 39 min |
| Jul 3, 4:42 PM MDT | Special Weather Statement | ABR | Dewey | 33 min |
| Jul 3, 5:10 PM MDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 50 min |
| Jul 3, 5:29 PM MDT | Special Weather Statement | ABR | Walworth | 31 min |
| Jul 3, 5:57 PM MDT | Severe Thunderstorm Warning | ABR | Jones | 33 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.