Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 8, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at May 24, 2021, 12:11 AM CDT for 5 counties in South Dakota. It was in force for 49 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 24, 2021, 12:11 AM CDT (05:11 UTC)
- Expired
- May 24, 2021, 1:00 AM CDT
- In force
- 49 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brown County, SD, Day County, SD, Marshall County, SD, McPherson County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 28 km from the middle of the area, began a volume at 05:12 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 24, 12:19 AM CDT | TSTM WND GST 58 | 4 Sw Columbia, SD | COLUMBIA 4SW PWS. |
| May 24, 12:35 AM CDT | TSTM WND GST 59 | 7 S Claremont, SD | MESONET STATION GOTS2 GROTON 9 NNE (SD MESONET). |
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, 5.2 hours before the alert went out and 87 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.
305
WUUS53 KABR 240511
SVRABR
SDC013-037-089-091-115-240600-
/O.NEW.KABR.SV.W.0008.210524T0511Z-210524T0600Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
1211 AM CDT Mon May 24 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Northwestern Day County in northeastern South Dakota...
Southwestern Marshall County in northeastern South Dakota...
Brown County in northeastern South Dakota...
Northeastern McPherson County in north central South Dakota...
North central Spink County in northeastern South Dakota...
* Until 100 AM CDT.
* At 1210 AM CDT, severe thunderstorms were located along a line
extending from near Leola to near Aberdeen to near Stratford,
moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 1210 AM CDT, a 58 mph
wind gust was reported the Aberdeen Airport.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Bath and Verdon around 1215 AM CDT.
Ferney and Tacoma Park around 1220 AM CDT.
Columbia, Putney, Forbes and Elm Lake around 1225 AM CDT.
Groton around 1230 AM CDT.
Other locations in the path of these severe thunderstorms include
Andover, Houghton, Sand Lake Wildlife Refuge, Pierpont, Claremont,
Amherst and Langford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4586 9796 4562 9779 4542 9766 4516 9824
4547 9849 4577 9898 4594 9879 4593 9804
TIME...MOT...LOC 0510Z 225DEG 35KT 4577 9885 4552 9844 4527 9824
HAIL...<.75IN
WIND...60MPH
$$
SRF2 follow-up statements
506
WWUS53 KABR 240530
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
1230 AM CDT Mon May 24 2021
SDC089-115-240538-
/O.CAN.KABR.SV.W.0008.000000T0000Z-210524T0600Z/
McPherson SD-Spink SD-
1230 AM CDT Mon May 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCPHERSON AND
NORTH CENTRAL SPINK COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4586 9796 4562 9779 4542 9766 4524 9806
4552 9834 4582 9869 4594 9867 4593 9804
TIME...MOT...LOC 0528Z 237DEG 38KT 4587 9852 4558 9812 4533 9793
$$
SDC013-037-091-240600-
/O.CON.KABR.SV.W.0008.000000T0000Z-210524T0600Z/
Day SD-Marshall SD-Brown SD-
1230 AM CDT Mon May 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHWESTERN DAY...SOUTHWESTERN MARSHALL AND CENTRAL BROWN
COUNTIES...
At 1228 AM CDT, severe thunderstorms were located along a line
extending from near Frederick to near Putney to near Andover, moving
northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 1219 PM CDT, a 58 mph wind
gust was reported 4 miles southwest of Columbia.
IMPACT...Expect damage to roofs, siding, and trees. In addition, the
wind gusts will lead to blowing dust and reduced
visibilities.
Locations impacted include...
Andover, Claremont, Langford, Pierpont and Amherst.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4586 9796 4562 9779 4542 9766 4524 9806
4552 9834 4582 9869 4594 9867 4593 9804
TIME...MOT...LOC 0528Z 237DEG 38KT 4587 9852 4558 9812 4533 9793
HAIL...<.75IN
WIND...60MPH
$$
SRF529
WWUS53 KABR 240546
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
1246 AM CDT Mon May 24 2021
SDC013-037-091-240600-
/O.CON.KABR.SV.W.0008.000000T0000Z-210524T0600Z/
Day SD-Marshall SD-Brown SD-
1246 AM CDT Mon May 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHWESTERN DAY...SOUTHWESTERN MARSHALL AND NORTHEASTERN BROWN
COUNTIES...
At 1246 AM CDT, severe thunderstorms were located along a line
extending from 8 miles east of Ellendale to near Claremont to near
Pierpont, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 1235 AM CDT, a 59 mph wind
gust was reported 7 miles south of Claremont.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Langford, Hecla, Pierpont, Claremont, Andover, Amherst, Sand Lake
Wildlife Refuge and Houghton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4586 9796 4562 9779 4542 9766 4531 9792
4556 9817 4594 9852 4593 9804
TIME...MOT...LOC 0546Z 225DEG 35KT 4598 9836 4569 9796 4544 9777
HAIL...<.75IN
WIND...60MPH
$$
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 23, 11:30 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, Faulk, McPherson, Walworth | 45 min |
| May 24, 12:03 AM CDT | Special Weather Statement | ABR | Brown | 42 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.