Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS Aberdeen, SD

June 8, 2021Corson County, Dewey County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 8, 2021, 7:25 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 50 min. 3 reports 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 8, 2021, 7:25 PM MDT (01:25 UTC)
Expired
Jun 8, 2021, 8:15 PM MDT
In force
50 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Corson County, SD, Dewey County, SD

The radar

The Bismarck radar (KBIS), 152 km from the middle of the area, began a volume at 01:25 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 8, 7:39 PM MDTTSTM WND GST 641 Ne Timber Lake, SDMESONET STATION 293 TIMBER LAKE (SDDOT).
Jun 8, 7:49 PM MDTHAIL 1Timber Lake, SD
Jun 8, 7:54 PM MDTTSTM WND GST 721 Ne Timber Lake, SDMESONET STATION 293 TIMBER LAKE (SDDOT).

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

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.4 hours before the alert went out and 153 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 2021-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 113 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2021-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.1939Sfc1 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
113 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
2317 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

801 
WUUS53 KABR 090125
SVRABR
SDC031-041-090215-
/O.NEW.KABR.SV.W.0019.210609T0125Z-210609T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
725 PM MDT Tue Jun 8 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Southeastern Corson County in north central South Dakota...
  North central Dewey County in north central South Dakota...

* Until 815 PM MDT.

* At 725 PM MDT, a severe thunderstorm was located near Timber Lake,
  or 29 miles north of Eagle Butte, moving northeast at 20 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.

* This severe thunderstorm will be near...
  Timber Lake around 735 PM MDT.

Other locations in the path of this severe thunderstorm include
Glencross and Spring Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 4534 10119 4545 10123 4558 10094 4540 10082
TIME...MOT...LOC 0125Z 243DEG 16KT 4542 10115 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Lueck
2 follow-up statements
271 
WWUS53 KABR 090155
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
755 PM MDT Tue Jun 8 2021

SDC031-041-090215-
/O.CON.KABR.SV.W.0019.000000T0000Z-210609T0215Z/
Corson SD-Dewey SD-
755 PM MDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM MDT
FOR SOUTHEASTERN CORSON AND NORTH CENTRAL DEWEY COUNTIES...

At 755 PM MDT, a severe thunderstorm was located near Spring Lake, or
24 miles south of Mclaughlin, moving northeast at 20 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...
  Glencross and Spring Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 4536 10108 4549 10107 4556 10093 4540 10082
TIME...MOT...LOC 0155Z 243DEG 16KT 4548 10098 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Lueck
609 
WWUS53 KABR 090208
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
808 PM MDT Tue Jun 8 2021

SDC031-041-090217-
/O.EXP.KABR.SV.W.0019.000000T0000Z-210609T0215Z/
Corson SD-Dewey SD-
808 PM MDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CORSON AND NORTH
CENTRAL DEWEY COUNTIES WILL EXPIRE AT 815 PM MDT...
                
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 will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 4536 10108 4549 10107 4556 10093 4540 10082
TIME...MOT...LOC 0207Z 243DEG 16KT 4550 10092 

$$

Lueck

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 6:17 PM MDTSevere Thunderstorm WarningABRCorson, Dewey43 min
Jun 8, 6:22 PM MDTFlash Flood WarningABRCorson3 hr
Jun 8, 6:44 PM MDTFlash Flood WarningABRCorson, Dewey3 hr
Jun 8, 6:44 PM MDTSpecial Weather StatementABRCorson31 min
Jun 8, 7:02 PM MDTSpecial Weather StatementABRCorson28 min
Jun 8, 7:11 PM MDTSevere Thunderstorm WarningABRCorson, Dewey49 min
Jun 8, 7:21 PM MDTTornado Warning Tornado observedABRCorson, Dewey24 min
Jun 8, 7:44 PM MDTTornado WarningABRCorson16 min
Jun 8, 8:11 PM MDTSpecial Weather StatementABRCorson34 min
Jun 8, 8:28 PM MDTSevere Thunderstorm WarningABRDewey47 min
Jun 8, 9:12 PM MDTSevere Thunderstorm WarningABRDewey36 min
Jun 8, 9:33 PM MDTFlash Flood Warning Considerable damage threatABRCorson, Dewey8 hr
Jun 8, 10:54 PM MDTSevere Thunderstorm WarningABRCorson, Dewey66 min
Jun 8, 11:58 PM MDTSevere Thunderstorm WarningABRDewey, Jones, Stanley37 min
Jun 9, 12:03 AM MDTSpecial Weather StatementABRCorson, Dewey57 min
Jun 9, 12:40 AM MDTSpecial Weather StatementABRJones, Stanley65 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.