Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 151, NWS Aberdeen, SD

August 28, 2021Brown County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 28, 2021, 7:09 AM CDT for Brown County, South Dakota. It was in force for 16 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, 7:09 AM CDT (12:09 UTC)
Expired: Aug 28, 2021, 7:25 AM CDT
In force: 16 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Brown County, SD

The radar

The Aberdeen radar (KABR), 49 km from the middle of the area, began a volume at 12:08 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, 7:15 AM CDT	HAIL 1	4 Nnw Houghton, 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, 7:08 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 0.2 hours before the alert went out and 109 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: 9 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 1540 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 558 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

432 
WUUS53 KABR 281209
SVRABR
SDC013-281245-
/O.NEW.KABR.SV.W.0151.210828T1209Z-210828T1245Z/

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

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Northeastern Brown County in northeastern South Dakota...

* Until 745 AM CDT.

* At 709 AM CDT, a severe thunderstorm was located near Sand Lake
  Wildlife Refuge, or 15 miles southeast of Ellendale, moving
  northeast at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Hecla around 720 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4589 9798 4571 9838 4581 9847 4594 9825
      4594 9798
TIME...MOT...LOC 1209Z 233DEG 40KT 4583 9834 

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

$$

Lueck

1 follow-up statement

331 
WWUS53 KABR 281225
SVSABR

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

SDC013-281235-
/O.CAN.KABR.SV.W.0151.000000T0000Z-210828T1245Z/
Brown SD-
725 AM CDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BROWN COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However small hail is
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until noon CDT for
northeastern South Dakota.

LAT...LON 4589 9798 4571 9838 4581 9847 4594 9825
      4594 9798
TIME...MOT...LOC 1224Z 233DEG 40KT 4594 9813 

$$

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, 3:19 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	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, 7:24 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.