Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 18, NWS Aberdeen, SD

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

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 8, 2021, 7:11 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 49 min. 5 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, 7:11 PM MDT (01:11 UTC)
Expired
Jun 8, 2021, 8:00 PM MDT
In force
49 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Corson County, SD, Dewey County, SD

The radar

The Bismarck radar (KBIS), 139 km from the middle of the area, began a volume at 01:11 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, 7:18 PM MDTTORNADO10 Ne Timber Lake, SDPRELIMINARY INFO. TIME AND LOCATION APPROXIMATED AND BASED ON RADAR/REPORTS. SPOTTER REPORTED A TORNADO.
Jun 8, 7:19 PM MDTTSTM WND GST 581 Ne Timber Lake, SDMESONET STATION 293 TIMBER LAKE (SDDOT).
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, 1.2 hours before the alert went out and 140 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°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 2021-06-09The 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.

903 
WUUS53 KABR 090111
SVRABR
SDC031-041-090200-
/O.NEW.KABR.SV.W.0018.210609T0111Z-210609T0200Z/

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

The National Weather Service in Aberdeen has issued a

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

* Until 800 PM MDT.

* At 711 PM MDT, a severe thunderstorm was located near Spring Lake,
  or 21 miles south of Mclaughlin, moving east at 15 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...
  Glencross around 720 PM MDT.
  Spring Lake around 725 PM MDT.

Other locations in the path of this severe thunderstorm include Trail
City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4543 10108 4561 10108 4572 10072 4543 10069
TIME...MOT...LOC 0111Z 267DEG 12KT 4552 10098 

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

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, 7:21 PM MDTTornado Warning Tornado observedABRCorson, Dewey24 min
Jun 8, 7:25 PM MDTSevere Thunderstorm WarningABRCorson, Dewey50 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.