Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 121, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 26, 2021, 3:44 AM MDT for Corson County, South Dakota. It was in force for 46 min. 2 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
- Aug 26, 2021, 3:44 AM MDT (09:44 UTC)
- Expired
- Aug 26, 2021, 4:30 AM MDT
- In force
- 46 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Corson County, SD
The radar
The Bismarck radar (KBIS), 117 km from the middle of the area, began a volume at 09:47 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 26, 4:06 AM MDT | TSTM WND GST 56 | 11 S Bullhead, SD | MESONET STATION GRRS2 BULLHEAD 10 S. |
| Aug 26, 4:08 AM MDT | TSTM WND GST 54 | 5 Wnw Mclaughlin, SD | MESONET STATION 205 MCLAUGHLIN (SDDOT). |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.7 hours before the alert went out and 117 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
- 2183 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
284
WUUS53 KABR 260944
SVRABR
SDC031-261045-
/O.NEW.KABR.SV.W.0121.210826T0944Z-210826T1045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
344 AM MDT Thu Aug 26 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Corson County in north central South Dakota...
* Until 445 AM MDT.
* At 344 AM MDT, a severe thunderstorm was located near Black Horse,
or 24 miles west of Mclaughlin, moving east at 45 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.
* This severe thunderstorm will be near...
Bullhead around 400 AM MDT.
Other locations in the path of this severe thunderstorm include
Mclaughlin, Little Eagle, Mahto and Wakpala.
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 Aberdeen.
&&
LAT...LON 4595 10055 4594 10050 4589 10042 4558 10044
4555 10049 4553 10048 4551 10045 4548 10045
4556 10152 4594 10151
TIME...MOT...LOC 0944Z 271DEG 38KT 4573 10130
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TMT3 follow-up statements
657
WWUS53 KABR 261002
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
402 AM MDT Thu Aug 26 2021
SDC031-261045-
/O.CON.KABR.SV.W.0121.000000T0000Z-210826T1045Z/
Corson SD-
402 AM MDT Thu Aug 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM MDT
FOR EASTERN CORSON COUNTY...
At 401 AM MDT, a severe thunderstorm was located near Bullhead, or 12
miles southwest of Mclaughlin, moving east at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mclaughlin, Little Eagle, Mahto and Wakpala.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Aberdeen.
&&
LAT...LON 4595 10055 4594 10050 4589 10042 4558 10044
4555 10049 4553 10048 4551 10045 4548 10045
4554 10127 4594 10126
TIME...MOT...LOC 1001Z 271DEG 38KT 4573 10103
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TMT481
WWUS53 KABR 261020
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
420 AM MDT Thu Aug 26 2021
SDC031-261045-
/O.CON.KABR.SV.W.0121.000000T0000Z-210826T1045Z/
Corson SD-
420 AM MDT Thu Aug 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM MDT
FOR EASTERN CORSON COUNTY...
At 420 AM MDT, a severe thunderstorm was located near Mahto, or 7
miles southeast of Mclaughlin, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mclaughlin, Wakpala, Indian Memorial Rec Area, Mahto, Little Eagle,
Bullhead, Grand River Casino, Kenel, Spring Lake and southeastern
Standing Rock Nation.
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
Aberdeen.
&&
LAT...LON 4595 10055 4594 10050 4589 10042 4558 10044
4555 10049 4553 10048 4551 10045 4548 10045
4553 10110 4594 10108
TIME...MOT...LOC 1020Z 271DEG 38KT 4573 10074
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TMT778
WWUS53 KABR 261030
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
430 AM MDT Thu Aug 26 2021
SDC031-261039-
/O.CAN.KABR.SV.W.0121.000000T0000Z-210826T1045Z/
Corson SD-
430 AM MDT Thu Aug 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CORSON COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Aberdeen.
LAT...LON 4595 10055 4594 10050 4589 10042 4558 10044
4555 10049 4553 10048 4551 10045 4548 10045
4553 10110 4594 10108
TIME...MOT...LOC 1027Z 271DEG 38KT 4573 10059
$$
TMTThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 2:47 AM MDT | Severe Thunderstorm Warning | ABR | Corson | 58 min |
| Aug 26, 4:37 AM MDT | Special Weather Statement | ABR | Campbell, Dewey, Walworth | 53 min |
| Aug 26, 6:19 AM MDT | Special Weather Statement | ABR | Edmunds, Faulk | 26 min |
| Aug 26, 6:47 AM MDT | Severe Thunderstorm Warning | ABR | Faulk, Hand | 43 min |
| Aug 26, 7:01 AM MDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hyde | 44 min |
| Aug 26, 7:11 AM MDT | Severe Thunderstorm Warning | ABR | Faulk, Spink | 49 min |
| Aug 26, 7:18 AM MDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 57 min |
| Aug 26, 7:24 AM MDT | Severe Thunderstorm Warning | ABR | Hand, Spink | 36 min |
| Aug 26, 7:45 AM MDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 45 min |
| Aug 26, 8:14 AM MDT | Severe Thunderstorm Warning | ABR | Roberts | 46 min |
| Aug 26, 8:22 AM MDT | Severe Thunderstorm Warning | ABR | Clark, Hamlin, Spink | 38 min |
| Aug 26, 8:26 AM MDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 49 min |
| Aug 26, 8:50 AM MDT | High Wind Warning | ABR | Brown, Clark, Codington, Day, Deuel, Grant and 4 more | 5 hr |
| Aug 26, 8:57 AM MDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 33 min |
| Aug 26, 8:58 AM MDT | Severe Thunderstorm Warning | ABR | Deuel, Hamlin | 62 min |
| Aug 26, 9:00 AM MDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Hamlin | 60 min |
| Aug 26, 1:37 PM MDT | Severe Thunderstorm Warning | ABR | Roberts | 23 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.