Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 142, NWS Aberdeen, SD

August 28, 2021Brown County, Edmunds County, McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 28, 2021, 3:19 AM CDT for Brown County, Edmunds County, McPherson County, South Dakota. It was in force for 26 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 28, 2021, 3:19 AM CDT (08:19 UTC)
Expired: Aug 28, 2021, 3:45 AM CDT
In force: 26 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Brown County, SD, Edmunds County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 31 km from the middle of the area, began a volume at 08:21 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 28, 3:25 AM CDT	HAIL 1	4 N Cravens Corner, SD

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 28, 2:32 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.3 hours before the alert went out and 75 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: 650 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1212 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

772 
WUUS53 KABR 280819
SVRABR
SDC013-045-089-280845-
/O.NEW.KABR.SV.W.0142.210828T0819Z-210828T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
319 AM CDT Sat Aug 28 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Northeastern Edmunds County in north central South Dakota...
  West central Brown County in northeastern South Dakota...
  Southeastern McPherson County in north central South Dakota...

* Until 345 AM CDT.

* At 318 AM CDT, a severe thunderstorm was located near Plainview
  Colony, or near Ipswich, moving east at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Deerfield Colony around 325 AM CDT.
  Long Lake Colony around 330 AM CDT.
  Wetonka and Mina Lake Rec Area around 335 AM CDT.

Other locations in the path of this severe thunderstorm include
Richmond Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4545 9855 4544 9914 4557 9914 4568 9860
TIME...MOT...LOC 0818Z 252DEG 40KT 4553 9902 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Lueck

1 follow-up statement

600 
WWUS53 KABR 280836
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
336 AM CDT Sat Aug 28 2021

SDC089-280846-
/O.CAN.KABR.SV.W.0142.000000T0000Z-210828T0845Z/
McPherson SD-
336 AM CDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MCPHERSON 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 800 AM CDT for
north central and northeastern South Dakota.

LAT...LON 4545 9855 4544 9914 4550 9913 4561 9858
TIME...MOT...LOC 0836Z 252DEG 40KT 4559 9874 

$$

SDC013-045-280845-
/O.CON.KABR.SV.W.0142.000000T0000Z-210828T0845Z/
Edmunds SD-Brown SD-
336 AM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR NORTHEASTERN EDMUNDS AND WEST CENTRAL BROWN COUNTIES...

At 336 AM CDT, a severe thunderstorm was located over Wetonka, or 15
miles northwest of Aberdeen, moving east at 45 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
  Richmond Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4545 9855 4544 9914 4550 9913 4561 9858
TIME...MOT...LOC 0836Z 252DEG 40KT 4559 9874 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Lueck

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 1:14 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	31 min
Aug 28, 1:44 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	46 min
Aug 28, 2:05 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Walworth	40 min
Aug 28, 2:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Edmunds, Walworth	66 min
Aug 28, 2:49 AM CDT	Special Weather Statement	ABR	Corson	26 min
Aug 28, 3:36 AM CDT	Special Weather Statement	ABR	Campbell	24 min
Aug 28, 3:42 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Edmunds	47 min
Aug 28, 3:57 AM CDT	Special Weather Statement	ABR	Campbell	33 min
Aug 28, 4:12 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown, Spink	63 min
Aug 28, 4:15 AM CDT	Special Weather Statement	ABR	Campbell	30 min
Aug 28, 4:24 AM CDT	Special Weather Statement	ABR	Walworth	36 min
Aug 28, 4:51 AM CDT	Severe Thunderstorm Warning	ABR	Dewey	39 min
Aug 28, 5:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown, Clark, Codington, Day, Spink	65 min
Aug 28, 5:29 AM CDT	Special Weather Statement	ABR	Dewey	16 min
Aug 28, 5:56 AM CDT	Special Weather Statement	ABR	Walworth	34 min
Aug 28, 6:08 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Potter, Walworth	37 min
Aug 28, 6:15 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Codington, Day, Grant	60 min
Aug 28, 6:40 AM CDT	Special Weather Statement	ABR	Potter	35 min
Aug 28, 6:55 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk	35 min
Aug 28, 6:57 AM CDT	Special Weather Statement	ABR	Brown	33 min
Aug 28, 7:01 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Grant	44 min
Aug 28, 7:09 AM CDT	Severe Thunderstorm Warning	ABR	Brown	16 min
Aug 28, 7:24 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	36 min
Aug 28, 7:43 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	30 min
Aug 28, 7:53 AM CDT	Special Weather Statement	ABR	Brown	37 min
Aug 28, 8:24 AM CDT	Special Weather Statement	ABR	Day	36 min
Aug 28, 8:26 AM CDT	Severe Thunderstorm Warning	ABR	Day, Grant, Roberts	30 min
Aug 28, 8:27 AM CDT	Special Weather Statement	ABR	Roberts	48 min
Aug 28, 8:42 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Grant, Roberts	33 min
Aug 28, 8:50 AM CDT	Tornado Warning	ABR	Grant, Roberts	25 min
Aug 28, 9:14 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	31 min
Aug 28, 9:31 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Grant, Roberts	44 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.