Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 7, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at May 23, 2021, 11:30 PM CDT for 5 counties in South Dakota. It was in force for 45 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
- May 23, 2021, 11:30 PM CDT (04:30 UTC)
- Expired
- May 24, 2021, 12:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Campbell County, SD, Edmunds County, SD, Faulk County, SD, McPherson County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 81 km from the middle of the area, began a volume at 04:32 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 |
|---|---|---|---|
| May 23, 11:47 PM CDT | TSTM WND GST 59 | 10 Sw Long Lake, SD | MESONET STATION 184 EUREKA (SDDOT). |
| May 23, 11:52 PM CDT | TSTM WND GST 63 | 10 Sw Long Lake, SD | MESONET STATION 184 EUREKA (SDDOT). |
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, 4.5 hours before the alert went out and 116 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
- 407 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 2081 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted.
349
WUUS53 KABR 240430
SVRABR
SDC021-045-049-089-129-240515-
/O.NEW.KABR.SV.W.0007.210524T0430Z-210524T0515Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
1130 PM CDT Sun May 23 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Central Edmunds County in north central South Dakota...
Northeastern Faulk County in north central South Dakota...
Eastern Campbell County in north central South Dakota...
McPherson County in north central South Dakota...
Northeastern Walworth County in north central South Dakota...
* Until 1215 AM CDT.
* At 1129 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Mound City to near Hosmer to
near Pembrook Colony, moving north at 45 mph.
HAZARD...70 mph wind gusts.
SOURCE...Trained weather spotters. At 1117 PM CDT, a 75 mph wind
gust was reported at Bowdle.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Hillsview and Cravens Corner around 1140 PM CDT.
Other locations in the path of these severe thunderstorms include
Artas, New Town Corner, Plainview Colony, Deerfield Colony, Long Lake
and Leola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for damaging winds. People outside should move
immediately to shelter inside a strong building. Stay away from
windows.
&&
LAT...LON 4594 9927 4563 9873 4518 9903 4546 9946
4559 10006 4594 10003
TIME...MOT...LOC 0429Z 189DEG 41KT 4566 9995 4555 9944 4532 9908
HAIL...<.75IN
WIND...70MPH
$$
SRF2 follow-up statements
187
WWUS53 KABR 240451
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
1151 PM CDT Sun May 23 2021
SDC021-049-129-240501-
/O.CAN.KABR.SV.W.0007.000000T0000Z-210524T0515Z/
Faulk SD-Campbell SD-Walworth SD-
1151 PM CDT Sun May 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FAULK...EASTERN
CAMPBELL AND NORTHEASTERN WALWORTH COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4594 9927 4563 9873 4537 9890 4560 9937
4568 9972 4594 9972
TIME...MOT...LOC 0451Z 197DEG 43KT 4602 9964 4579 9928 4556 9892
$$
SDC045-089-240515-
/O.CON.KABR.SV.W.0007.000000T0000Z-210524T0515Z/
Edmunds SD-McPherson SD-
1151 PM CDT Sun May 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR NORTHEASTERN EDMUNDS AND MCPHERSON COUNTIES...
At 1151 PM CDT, severe thunderstorms were located along a line
extending from near Venturia to near New Town Corner to Deerfield
Colony, moving north at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Long Lake and Leola.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4594 9927 4563 9873 4537 9890 4560 9937
4568 9972 4594 9972
TIME...MOT...LOC 0451Z 197DEG 43KT 4602 9964 4579 9928 4556 9892
HAIL...<.75IN
WIND...60MPH
$$
SRF474
WWUS53 KABR 240458
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
1158 PM CDT Sun May 23 2021
SDC045-089-240515-
/O.CON.KABR.SV.W.0007.000000T0000Z-210524T0515Z/
Edmunds SD-McPherson SD-
1158 PM CDT Sun May 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR NORTHEASTERN EDMUNDS AND MCPHERSON COUNTIES...
At 1157 PM CDT, severe thunderstorms were located along a line
extending from near Ashley to near Long Lake to near Long Lake
Colony, moving north at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 1147 PM CDT, a 59 mph wind
gust was reported 10 miles southwest of Long Lake.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Eureka, Leola, Long Lake, Wetonka, Plainview Colony, Long Lake
Colony, Deerfield Colony, Greenway, Cravens Corner, New Town Corner
and Grassland Colony.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4594 9927 4563 9873 4539 9889 4566 9931
4574 9972 4594 9972
TIME...MOT...LOC 0457Z 199DEG 40KT 4596 9941 4581 9914 4558 9878
HAIL...<.75IN
WIND...60MPH
$$
SRFThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:59 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 46 min |
| May 23, 9:37 PM CDT | Special Weather Statement | ABR | Hughes | 23 min |
| May 23, 10:04 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Lyman | 41 min |
| May 23, 10:14 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Faulk, Hand, Hughes, Hyde, Lyman and 2 more | 46 min |
| May 23, 10:46 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Faulk, Hand, Hyde, Potter, Sully | 44 min |
| May 23, 11:06 PM CDT | Special Weather Statement | ABR | Edmunds, Walworth | 24 min |
| May 23, 11:23 PM CDT | Special Weather Statement | ABR | Spink | 37 min |
| May 24, 12:03 AM CDT | Special Weather Statement | ABR | Brown | 42 min |
| May 24, 12:11 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, McPherson, Marshall, Spink | 49 min |
| May 24, 12:14 AM CDT | Special Weather Statement | ABR | Clark, Day | 46 min |
| May 24, 12:55 AM CDT | Special Weather Statement | ABR | Marshall | 35 min |
| May 24, 1:00 AM CDT | Special Weather Statement | ABR | Codington, Deuel, Grant, Hamlin, Roberts | 60 min |
| May 24, 1:17 AM CDT | Special Weather Statement | ABR | Roberts | 43 min |
| May 24, 2:59 PM CDT | Wind Advisory | ABR | Brown, Campbell, Corson, Day, Dewey, Edmunds and 4 more | 28 hr |
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.