Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Aberdeen, SD

June 11, 2021Corson County, Dewey County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 11, 2021, 12:02 AM MDT for Corson County, Dewey County, South Dakota. It was in force for 43 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
Jun 11, 2021, 12:02 AM MDT (06:02 UTC)
Expired
Jun 11, 2021, 12:45 AM MDT
In force
43 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Corson County, SD, Dewey County, SD

The radar

The Bismarck radar (KBIS), 158 km from the middle of the area, began a volume at 06:02 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

TimeReportWhereRemark
Jun 11, 12:04 AM MDTTSTM WND GST 5811 S Bullhead, SDTIME ESTIMATED BASED ON RADAR.

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.

IssuedProductOfficeLasted
Jun 10, 8:08 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.0 hours before the alert went out and 159 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1785 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1785 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2484 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.8

Open this sounding in Storm Lab

The text

As transmitted.

142 
WUUS53 KABR 110602
SVRABR
SDC031-041-110645-
/O.NEW.KABR.SV.W.0025.210611T0602Z-210611T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
1202 AM MDT Fri Jun 11 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Central Corson County in north central South Dakota...
  Western Dewey County in north central South Dakota...

* Until 1245 AM MDT.

* At 1201 AM MDT, severe thunderstorms were located along a line
  extending from Walker to Bear Creek, moving east at 30 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Walker around 1205 AM MDT.
  Eagle Butte and South Eagle Butte around 1220 AM MDT.

Other locations in the path of these severe thunderstorms include
Mclaughlin and Parade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4594 10050 4489 10085 4492 10114 4499 10114
      4499 10150 4527 10149 4595 10126
TIME...MOT...LOC 0601Z 271DEG 28KT 4593 10106 4504 10146 

HAIL...0.75IN
WIND...60MPH
 
$$

SD
2 follow-up statements
170 
WWUS53 KABR 110631
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
1231 AM MDT Fri Jun 11 2021

SDC031-041-110645-
/O.CON.KABR.SV.W.0025.000000T0000Z-210611T0645Z/
Corson SD-Dewey SD-
1231 AM MDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM MDT
FOR CENTRAL CORSON AND WESTERN DEWEY COUNTIES...

At 1231 AM MDT, severe thunderstorms were located along a line
extending from 8 miles north of Mclaughlin to near Parade, moving
east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Ridgeview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4594 10050 4489 10085 4492 10114 4499 10114
      4499 10150 4527 10149 4595 10119
TIME...MOT...LOC 0631Z 270DEG 28KT 4593 10076 4504 10116 

HAIL...0.75IN
WIND...60MPH
 
$$

SD
847 
WWUS53 KABR 110643
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
1243 AM MDT Fri Jun 11 2021

SDC031-041-110653-
/O.EXP.KABR.SV.W.0025.000000T0000Z-210611T0645Z/
Corson SD-Dewey SD-
1243 AM MDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CORSON AND WESTERN
DEWEY COUNTIES WILL EXPIRE AT 1245 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 200 AM MDT for
north central South Dakota.

LAT...LON 4594 10050 4489 10085 4492 10114 4499 10114
      4499 10150 4527 10149 4595 10119
TIME...MOT...LOC 0643Z 271DEG 28KT 4593 10064 4504 10104 

$$

SD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 10:06 PM MDTSevere Thunderstorm WarningABRCorson39 min
Jun 11, 12:15 AM MDTSevere Thunderstorm WarningABRDewey, Jones, Stanley45 min
Jun 11, 12:47 AM MDTSpecial Weather StatementABRWalworth43 min
Jun 11, 1:37 AM MDTSevere Thunderstorm WarningABREdmunds, Faulk, McPherson, Potter, Walworth38 min
Jun 11, 1:54 AM MDTSevere Thunderstorm WarningABRFaulk, Potter, Sully36 min
Jun 11, 2:16 AM MDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, McPherson, Potter, Walworth44 min
Jun 11, 2:23 AM MDTSevere Thunderstorm WarningABRBuffalo, Hand, Spink52 min
Jun 11, 2:38 AM MDTSevere Thunderstorm WarningABRBrown, Day, Edmunds, Faulk, McPherson, Marshall and 1 more52 min
Jun 11, 3:16 AM MDTSevere Thunderstorm WarningABRBrown, Clark, Codington, Day, Grant, Marshall and 2 more44 min
Jun 11, 3:49 AM MDTSevere Thunderstorm WarningABRClark, Codington, Grant, Hamlin, Spink41 min
Jun 11, 4:02 AM MDTSevere Thunderstorm WarningABRClark, Codington, Day, Deuel, Grant, Marshall and 1 more43 min
Jun 11, 4:35 AM MDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin40 min
Jun 11, 4:49 AM MDTSevere Thunderstorm WarningABRCodington, Deuel, Grant, Roberts33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.