Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 63, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 23, 2021, 10:42 PM CDT for Day County, Marshall County, Roberts County, South Dakota. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2021, 10:42 PM CDT (03:42 UTC)
- Expired
- Jul 23, 2021, 11:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Day County, SD, Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 95 km from the middle of the area, began a volume at 03:45 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 23, 7:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 3.7 hours before the alert went out and 121 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
- 3002 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1613 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.9
The text
As transmitted.
404 WUUS53 KABR 240342 SVRABR SDC037-091-109-240415- /O.NEW.KABR.SV.W.0063.210724T0342Z-210724T0415Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Aberdeen SD 1042 PM CDT Fri Jul 23 2021 The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Southwestern Roberts County in northeastern South Dakota... Northeastern Day County in northeastern South Dakota... Southeastern Marshall County in northeastern South Dakota... * Until 1115 PM CDT. * At 1042 PM CDT, a severe thunderstorm was located over Buffalo Lakes, or 11 miles west of Sisseton, moving east at 25 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Long Hollow Housing around 1055 PM CDT. Other locations in the path of this severe thunderstorm include Sisseton, Agency Village, Dakota Connection & Casino and Finley Heights Housing. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4551 9743 4576 9731 4574 9682 4542 9705 TIME...MOT...LOC 0342Z 287DEG 20KT 4562 9728 HAIL...0.75IN WIND...60MPH $$ SD
1 follow-up statement
602
WWUS53 KABR 240404
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
1104 PM CDT Fri Jul 23 2021
SDC091-240414-
/O.CAN.KABR.SV.W.0063.000000T0000Z-210724T0415Z/
Marshall SD-
1104 PM CDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
northeastern South Dakota.
LAT...LON 4574 9682 4542 9705 4550 9738 4556 9736
4556 9723 4576 9723
TIME...MOT...LOC 0404Z 287DEG 20KT 4558 9711
$$
SDC037-109-240415-
/O.CON.KABR.SV.W.0063.000000T0000Z-210724T0415Z/
Roberts SD-Day SD-
1104 PM CDT Fri Jul 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR SOUTHWESTERN ROBERTS AND NORTHEASTERN DAY COUNTIES...
At 1104 PM CDT, a severe thunderstorm was located over Agency
Village, or near Sisseton, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Agency Village, Dakota Connection & Casino and Finley Heights
Housing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4574 9682 4542 9705 4550 9738 4556 9736
4556 9723 4576 9723
TIME...MOT...LOC 0404Z 287DEG 20KT 4558 9711
HAIL...0.75IN
WIND...60MPH
$$
SDThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 8:14 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 46 min |
| Jul 23, 8:42 PM CDT | Special Weather Statement | ABR | Corson | 33 min |
| Jul 23, 9:27 PM CDT | Special Weather Statement | ABR | Marshall | 33 min |
| Jul 23, 9:47 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson | 43 min |
| Jul 23, 10:06 PM CDT | Special Weather Statement | ABR | Walworth | 24 min |
| Jul 23, 10:29 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 46 min |
| Jul 23, 10:31 PM CDT | Severe Thunderstorm Warning | ABR | Brown, McPherson | 44 min |
| Jul 23, 10:40 PM CDT | Special Weather Statement | ABR | Potter, Walworth | 50 min |
| Jul 23, 10:54 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Potter, Sully, Walworth | 51 min |
| Jul 23, 11:13 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 35 min |
| Jul 23, 11:17 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 30 min |
| Jul 23, 11:54 PM CDT | Special Weather Statement | ABR | Marshall | 36 min |
| Jul 24, 12:43 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.