Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 78, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2021, 8:54 PM CDT for Clark County, Codington County, South Dakota. It was in force for 51 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
- Jul 25, 2021, 8:54 PM CDT (01:54 UTC)
- Expired
- Jul 25, 2021, 9:45 PM CDT
- In force
- 51 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Clark County, SD, Codington County, SD
The radar
The Aberdeen radar (KABR), 102 km from the middle of the area, began a volume at 01:55 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 25, 9:02 PM CDT | HAIL 1.75 | Wallace, SD | |
| Jul 25, 9:07 PM CDT | HAIL 1 | Florence, SD | VERIFIED BY SOCIAL MEDIA PHOTOS. TIME ESTIMATED. |
| Jul 25, 9:07 PM CDT | HAIL 1.25 | 5 N Florence, SD | TIME ESTIMATED. |
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, 1.9 hours before the alert went out and 92 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
- 1771 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 2015 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 380 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 31.3
The text
As transmitted.
975
WUUS53 KABR 260154
SVRABR
SDC025-029-260245-
/O.NEW.KABR.SV.W.0078.210726T0154Z-210726T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
854 PM CDT Sun Jul 25 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Northeastern Clark County in northeastern South Dakota...
Codington County in northeastern South Dakota...
* Until 945 PM CDT.
* At 853 PM CDT, a severe thunderstorm was located over Wallace, or
16 miles northeast of Clark, moving east at 35 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Grass Lake around 900 PM CDT.
Florence and Medicine Lake around 905 PM CDT.
Other locations in the path of this severe thunderstorm include
Watertown, Dakota Sioux Casino, Watertown City Park, Rauville,
Waverly and South Shore.
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 4493 9761 4515 9762 4515 9689 4514 9688
4493 9688
TIME...MOT...LOC 0153Z 268DEG 32KT 4505 9749
HAIL...1.25IN
WIND...<50MPH
$$
Parkin3 follow-up statements
881
WWUS53 KABR 260206
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
906 PM CDT Sun Jul 25 2021
SDC025-260215-
/O.CAN.KABR.SV.W.0078.000000T0000Z-210726T0245Z/
Clark SD-
906 PM CDT Sun Jul 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLARK COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4497 9745 4515 9748 4515 9689 4514 9688
4493 9688
TIME...MOT...LOC 0205Z 268DEG 32KT 4505 9733
$$
SDC029-260245-
/O.CON.KABR.SV.W.0078.000000T0000Z-210726T0245Z/
Codington SD-
906 PM CDT Sun Jul 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR NORTHERN CODINGTON COUNTY...
At 905 PM CDT, a severe thunderstorm was located over Florence, or 12
miles northwest of Watertown, moving east at 35 mph.
HAZARD...Golf ball size hail.
SOURCE...Radar indicated. At 902 pm, golf ball size hail was
reported in Wallace.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
Locations impacted include...
Dakota Sioux Casino, Rauville, Waverly and South Shore.
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 4497 9745 4515 9748 4515 9689 4514 9688
4493 9688
TIME...MOT...LOC 0205Z 268DEG 32KT 4505 9733
HAIL...1.75IN
WIND...<50MPH
$$
Parkin734
WWUS53 KABR 260229
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
929 PM CDT Sun Jul 25 2021
SDC029-260245-
/O.CON.KABR.SV.W.0078.000000T0000Z-210726T0245Z/
Codington SD-
929 PM CDT Sun Jul 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR NORTHEASTERN CODINGTON COUNTY...
At 927 PM CDT, a severe thunderstorm was located near Waverly, or 11
miles northeast of Watertown, moving east at 35 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated. At 907 pm, half dollar size hail was
reported 5 miles north of Florence.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Rauville, South Shore, Waverly and Dakota Sioux Casino.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Aberdeen.
&&
LAT...LON 4497 9714 4515 9719 4515 9689 4514 9688
4493 9688
TIME...MOT...LOC 0227Z 268DEG 32KT 4506 9704
HAIL...1.25IN
WIND...<50MPH
$$
Parkin877
WWUS53 KABR 260240
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
940 PM CDT Sun Jul 25 2021
SDC029-260250-
/O.EXP.KABR.SV.W.0078.000000T0000Z-210726T0245Z/
Codington SD-
940 PM CDT Sun Jul 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CODINGTON COUNTY
WILL EXPIRE AT 945 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.
LAT...LON 4497 9714 4515 9719 4515 9689 4514 9688
4493 9688
TIME...MOT...LOC 0240Z 268DEG 32KT 4506 9691
$$
ParkinThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:03 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Hyde | 42 min |
| Jul 25, 7:30 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 36 min |
| Jul 25, 8:11 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 49 min |
| Jul 26, 3:41 AM CDT | Heat Advisory | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more | 15 hr |
| Jul 26, 3:41 AM CDT | Heat Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 18 more | 41 hr |
| Jul 26, 4:00 AM CDT | Special Weather Statement | ABR | Corson | 30 min |
| Jul 26, 4:05 AM CDT | Severe Thunderstorm Warning | ABR | Corson | 28 min |
| Jul 26, 7:12 AM CDT | Special Weather Statement | ABR | Day | 18 min |
| Jul 26, 8:35 AM CDT | Special Weather Statement | ABR | Walworth | 25 min |
| Jul 26, 9:03 AM CDT | Special Weather Statement | ABR | Walworth | 27 min |
| Jul 26, 9:43 AM CDT | Severe Thunderstorm Warning | ABR | Walworth | 32 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.