Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 73, NWS Aberdeen, SD

July 25, 2021Hughes County, Stanley County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2021, 6:41 PM CDT for Hughes County, Stanley County, South Dakota. It was in force for 25 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: Jul 25, 2021, 6:41 PM CDT (23:41 UTC)
Expired: Jul 25, 2021, 7:06 PM CDT
In force: 25 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Hughes County, SD, Stanley County, SD

The radar

The Aberdeen radar (KABR), 184 km from the middle of the area, began a volume at 23:41 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.7 hours before the alert went out and 144 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2316 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

971 
WUUS53 KABR 252341
SVRABR
SDC065-117-260030-
/O.NEW.KABR.SV.W.0073.210725T2341Z-210726T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
641 PM CDT Sun Jul 25 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Southeastern Stanley County in central South Dakota...
  Southeastern Hughes County in central South Dakota...

* Until 730 PM CDT.

* At 640 PM CDT, a severe thunderstorm was located near Degrey Rec
  Area, or 19 miles southeast of Pierre, moving southeast at 10 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  southeastern Stanley and southeastern Hughes Counties, including
  the following locations... northwestern Lower Brule Reservation.

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 4416 9992 4419 9994 4419 9996 4427 10007
      4428 10001 4424 9976 4413 9987
TIME...MOT...LOC 2340Z 296DEG 8KT 4425 9997 

HAIL...1.50IN
WIND...60MPH
 
$$

Parkin

1 follow-up statement

748 
WWUS53 KABR 260006
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
706 PM CDT Sun Jul 25 2021

SDC065-117-260016-
/O.CAN.KABR.SV.W.0073.000000T0000Z-210726T0030Z/
Stanley SD-Hughes SD-
706 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STANLEY AND
SOUTHEASTERN HUGHES COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4416 9992 4419 9994 4419 9996 4427 10007
      4428 10001 4424 9976 4413 9987
TIME...MOT...LOC 0003Z 296DEG 8KT 4422 9990 

$$

Parkin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 4:33 PM CDT	Special Weather Statement	ABR	Jones	57 min
Jul 25, 5:31 PM CDT	Special Weather Statement	ABR	Hughes	44 min
Jul 25, 5:37 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	14 min
Jul 25, 5:55 PM CDT	Severe Thunderstorm Warning	ABR	Jones	50 min
Jul 25, 6:03 PM CDT	Severe Thunderstorm Warning	ABR	Hughes	29 min
Jul 25, 6:20 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	40 min
Jul 25, 6:24 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	51 min
Jul 25, 6:43 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	22 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.