Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Aberdeen, SD

June 11, 2021Dewey County, Jones County, Stanley County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 11, 2021, 12:15 AM MDT for Dewey County, Jones County, Stanley County, South Dakota. It was in force for 45 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: Jun 11, 2021, 12:15 AM MDT (06:15 UTC)
Expired: Jun 11, 2021, 1:00 AM MDT
In force: 45 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Dewey County, SD, Jones County, SD, Stanley County, SD

The radar

The Rapid City radar (KUDX), 173 km from the middle of the area, began a volume at 06:18 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
Jun 10, 8:08 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 6.3 hours before the alert went out and 179 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: 1559 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 2700 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 15.0

Open this sounding in Storm Lab

The text

As transmitted.

081 
WUUS53 KABR 110615
SVRABR
SDC041-075-117-110700-
/O.NEW.KABR.SV.W.0026.210611T0615Z-210611T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
115 AM CDT Fri Jun 11 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Northern Jones County in central South Dakota...
  Stanley County in central South Dakota...
  Southern Dewey County in north central South Dakota...

* Until 200 AM CDT/100 AM MDT/.

* At 114 AM CDT/1214 AM MDT/, severe thunderstorms were located along
  a line extending from near South Eagle Butte to near Nowlin, moving
  east at 50 mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Draper.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage near Philip. SEEK SHELTER NOW inside a sturdy structure 
and stay away from windows! To report severe weather, contact your 
nearest law enforcement agency. They will send your report to the 
National Weather Service office in Aberdeen.

&&

LAT...LON 4394 10107 4417 10105 4417 10116 4499 10114
      4500 10139 4501 10045 4483 10046 4477 10052
      4477 10061 4483 10069 4480 10073 4478 10073
      4471 10061 4458 10064 4454 10052 4449 10057
      4446 10058 4444 10055 4446 10047 4388 10049
TIME...MOT...LOC 0614Z 272DEG 44KT 4495 10121 4399 10123 

HAIL...0.75IN
WIND...70MPH
 
$$

Parkin

1 follow-up statement

782 
WWUS53 KABR 110657
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
157 AM CDT Fri Jun 11 2021

SDC041-075-117-110706-
/O.EXP.KABR.SV.W.0026.000000T0000Z-210611T0700Z/
Jones SD-Stanley SD-Dewey SD-
157 AM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JONES...STANLEY AND
SOUTHERN DEWEY COUNTIES WILL EXPIRE AT 200 AM CDT/100 AM MDT/...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT/200 AM
MDT/ for central and north central South Dakota.

LAT...LON 4394 10107 4417 10105 4417 10116 4499 10114
      4500 10139 4501 10045 4483 10046 4477 10052
      4477 10061 4483 10069 4480 10073 4478 10073
      4471 10061 4458 10064 4454 10052 4449 10057
      4446 10058 4444 10055 4446 10047 4388 10049
TIME...MOT...LOC 0656Z 272DEG 44KT 4493 10051 4397 10053 

$$

Parkin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 10:06 PM MDT	Severe Thunderstorm Warning	ABR	Corson	39 min
Jun 11, 12:02 AM MDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	43 min
Jun 11, 12:47 AM MDT	Special Weather Statement	ABR	Walworth	43 min
Jun 11, 1:37 AM MDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, McPherson, Potter, Walworth	38 min
Jun 11, 1:54 AM MDT	Severe Thunderstorm Warning	ABR	Faulk, Potter, Sully	36 min
Jun 11, 2:16 AM MDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, McPherson, Potter, Walworth	44 min
Jun 11, 2:23 AM MDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Spink	52 min
Jun 11, 2:38 AM MDT	Severe Thunderstorm Warning	ABR	Brown, Day, Edmunds, Faulk, McPherson, Marshall and 1 more	52 min
Jun 11, 3:16 AM MDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Marshall and 2 more	44 min
Jun 11, 3:49 AM MDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Grant, Hamlin, Spink	41 min
Jun 11, 4:02 AM MDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Deuel, Grant, Marshall and 1 more	43 min
Jun 11, 4:35 AM MDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	40 min
Jun 11, 4:49 AM MDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Roberts	33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.