Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Aberdeen, SD

August 22, 2021Edmunds County, McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 22, 2021, 4:33 PM CDT for Edmunds County, McPherson County, South Dakota. It was in force for 42 min. 1 report 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 22, 2021, 4:33 PM CDT (21:33 UTC)
Expired: Aug 22, 2021, 5:15 PM CDT
In force: 42 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Damage threat: Considerable
Hail: 2.0 in
Wind: 60.0 mph

Counties Edmunds County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 63 km from the middle of the area, began a volume at 21:34 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 22, 4:33 PM CDT	TSTM WND DMG	5 Nne Roscoe, SD	DELAYED REPORT. SMALL OUTBUILDING DESTROYED BY WIND. RELAYED VIA SOCIAL MEDIA WITH PHOTO. ESTIMATED TIME.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 22, 3:36 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 9.6 hours before the alert went out and 99 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1388 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

880 
WUUS53 KABR 222133
SVRABR
SDC045-089-222215-
/O.NEW.KABR.SV.W.0098.210822T2133Z-210822T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
433 PM CDT Sun Aug 22 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  North central Edmunds County in north central South Dakota...
  Eastern McPherson County in north central South Dakota...

* Until 515 PM CDT.

* At 432 PM CDT, a severe thunderstorm was located over Roscoe, or 15
  miles west of Ipswich, moving northeast at 45 mph.

  HAZARD...Two inch hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Leola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4540 9935 4548 9944 4590 9909 4575 9878
TIME...MOT...LOC 2132Z 217DEG 38KT 4549 9933 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Lueck

3 follow-up statements

339 
WWUS53 KABR 222150
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
450 PM CDT Sun Aug 22 2021

SDC045-222159-
/O.CAN.KABR.SV.W.0098.000000T0000Z-210822T2215Z/
Edmunds SD-
450 PM CDT Sun Aug 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL EDMUNDS 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 900 PM CDT for
north central South Dakota.

LAT...LON 4575 9878 4559 9906 4560 9922 4587 9903
TIME...MOT...LOC 2149Z 217DEG 39KT 4564 9912 

$$

SDC089-222215-
/O.CON.KABR.SV.W.0098.000000T0000Z-210822T2215Z/
McPherson SD-
450 PM CDT Sun Aug 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR EASTERN MCPHERSON COUNTY...

At 449 PM CDT, a severe thunderstorm was located 7 miles northwest of
Plainview Colony, or 14 miles north of Ipswich, moving northeast 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.

Locations impacted include...
Leola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4575 9878 4559 9906 4560 9922 4587 9903
TIME...MOT...LOC 2149Z 217DEG 39KT 4564 9912 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Lueck

794 
WWUS53 KABR 222202
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
502 PM CDT Sun Aug 22 2021

SDC089-222215-
/O.CON.KABR.SV.W.0098.000000T0000Z-210822T2215Z/
McPherson SD-
502 PM CDT Sun Aug 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHEASTERN MCPHERSON COUNTY...

At 502 PM CDT, a severe thunderstorm was located near Leola, or 21
miles north of Ipswich, moving northeast 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...
Leola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4577 9882 4569 9903 4573 9913 4587 9903
TIME...MOT...LOC 2202Z 217DEG 38KT 4575 9900 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Lueck

126 
WWUS53 KABR 222213
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
513 PM CDT Sun Aug 22 2021

SDC089-222223-
/O.EXP.KABR.SV.W.0098.000000T0000Z-210822T2215Z/
McPherson SD-
513 PM CDT Sun Aug 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCPHERSON COUNTY
WILL EXPIRE AT 515 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
north central South Dakota.

Remember, a Severe Thunderstorm Warning still remains in effect for
northeastern McPherson County until 530 PM CDT. 

LAT...LON 4577 9882 4569 9903 4573 9913 4587 9903
TIME...MOT...LOC 2213Z 217DEG 38KT 4583 9892 

$$

Lueck

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 22, 8:02 AM CDT	Special Weather Statement	ABR	Jones	43 min
Aug 22, 3:40 PM CDT	Special Weather Statement	ABR	Deuel	20 min
Aug 22, 4:19 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter	41 min
Aug 22, 5:03 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	13 min
Aug 22, 5:21 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	39 min
Aug 22, 5:25 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo	37 min
Aug 22, 5:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown	50 min
Aug 22, 5:50 PM CDT	Special Weather Statement	ABR	Edmunds	25 min
Aug 22, 6:11 PM CDT	Severe Thunderstorm Warning	ABR	Brown	49 min
Aug 22, 6:14 PM CDT	Severe Thunderstorm Warning Destructive damage threat	ABR	Day, Marshall	46 min
Aug 22, 6:27 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	48 min
Aug 22, 6:54 PM CDT	Tornado Warning	ABR	Spink	15 min
Aug 22, 6:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Day, Marshall, Roberts	24 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2021 Every 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.