Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS Aberdeen, SD

July 23, 2021Campbell County, Edmunds County, McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 23, 2021, 9:47 PM CDT for Campbell County, Edmunds County, McPherson County, South Dakota. It was in force for 43 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
Jul 23, 2021, 9:47 PM CDT (02:47 UTC)
Expired
Jul 23, 2021, 10:30 PM CDT
In force
43 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Campbell County, SD, Edmunds County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 89 km from the middle of the area, began a volume at 02:49 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
Jul 23, 10:00 PM CDTTSTM WND DMG3 Nw Long Lake, SDROOF PEELED OFF OUT BUILDING.
Jul 23, 10:01 PM CDTTSTM WND GST 7510 Wnw Long Lake, SDRADAR ESTIMATED TIME.
Jul 23, 10:14 PM CDTTSTM WND GST 631 Ese Eureka, 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.

IssuedProductOfficeLasted
Jul 23, 7:02 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.8 hours before the alert went out and 126 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, Aberdeen, SD at 00:00Z on 2021-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3002 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, Aberdeen, SD at 00:00Z on 2021-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 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
3002 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1613 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.4
Supercell composite
6.9

Open this sounding in Storm Lab

The text

As transmitted.

468 
WUUS53 KABR 240247
SVRABR
SDC021-045-089-240330-
/O.NEW.KABR.SV.W.0060.210724T0247Z-210724T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
947 PM CDT Fri Jul 23 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Northwestern Edmunds County in north central South Dakota...
  Eastern Campbell County in north central South Dakota...
  McPherson County in north central South Dakota...

* Until 1030 PM CDT.

* At 946 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles southwest of Ashley to 8 miles south of
  Artas, moving southeast at 55 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Eureka around 955 PM CDT.
  Long Lake around 1000 PM CDT.
  Hillsview around 1005 PM CDT.

Other locations in the path of these severe thunderstorms include
Hosmer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4594 9872 4589 9873 4546 9932 4556 9971
      4559 9971 4559 9984 4569 10022 4581 10000
      4594 9984
TIME...MOT...LOC 0246Z 294DEG 47KT 4595 9943 4576 9985 

HAIL...0.88IN
WIND...60MPH
 
$$

Lueck
1 follow-up statement
349 
WWUS53 KABR 240308
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
1008 PM CDT Fri Jul 23 2021

SDC021-045-089-240330-
/O.CON.KABR.SV.W.0060.000000T0000Z-210724T0330Z/
Edmunds SD-Campbell SD-McPherson SD-
1008 PM CDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR NORTHWESTERN EDMUNDS...SOUTHEASTERN CAMPBELL AND MCPHERSON
COUNTIES...

At 1008 PM CDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Long Lake to near Hillsview,
moving east at 55 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
  Forbes and Spring Creek Colony.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4594 9872 4589 9873 4566 9904 4550 9946
      4556 9971 4559 9971 4559 9984 4567 10015
      4579 9981 4594 9947
TIME...MOT...LOC 0308Z 288DEG 46KT 4591 9908 4572 9950 

HAIL...0.88IN
WIND...60MPH
 
$$

Lueck

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:14 PM CDTSevere Thunderstorm WarningABRCorson46 min
Jul 23, 8:42 PM CDTSpecial Weather StatementABRCorson33 min
Jul 23, 9:27 PM CDTSpecial Weather StatementABRMarshall33 min
Jul 23, 10:06 PM CDTSpecial Weather StatementABRWalworth24 min
Jul 23, 10:29 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds, McPherson46 min
Jul 23, 10:31 PM CDTSevere Thunderstorm WarningABRBrown, McPherson44 min
Jul 23, 10:40 PM CDTSpecial Weather StatementABRPotter, Walworth50 min
Jul 23, 10:42 PM CDTSevere Thunderstorm WarningABRDay, Marshall, Roberts33 min
Jul 23, 10:54 PM CDTSevere Thunderstorm WarningABREdmunds, Faulk, Potter, Sully, Walworth51 min
Jul 23, 11:13 PM CDTSevere Thunderstorm WarningABRRoberts35 min
Jul 23, 11:17 PM CDTSevere Thunderstorm WarningABRBrown, Marshall30 min
Jul 23, 11:54 PM CDTSpecial Weather StatementABRMarshall36 min
Jul 24, 12:43 AM CDTSevere Thunderstorm WarningABRRoberts47 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.