Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 71, NWS Aberdeen, SD

July 25, 2021Hand County, Hyde County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2021, 6:20 PM CDT for Hand County, Hyde County, South Dakota. It was in force for 40 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: Jul 25, 2021, 6:20 PM CDT (23:20 UTC)
Expired: Jul 25, 2021, 7:00 PM CDT
In force: 40 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hand County, SD, Hyde County, SD

The radar

The Aberdeen radar (KABR), 137 km from the middle of the area, began a volume at 23:21 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

Time	Report	Where	Remark
Jul 25, 6:32 PM CDT	HAIL 1.75	7 W Miller Dale Colony, SD

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 88 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.

596 
WUUS53 KABR 252320
SVRABR
SDC059-069-260000-
/O.NEW.KABR.SV.W.0071.210725T2320Z-210726T0000Z/

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

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Southern Hand County in central South Dakota...
  Southeastern Hyde County in central South Dakota...

* Until 700 PM CDT.

* At 619 PM CDT, a severe thunderstorm was located 8 miles northeast
  of Stephan, or 11 miles south of Highmore, moving east at 40 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...
  Miller Dale Colony, Sunshine Bible Academy and Pleasant Valley 
  Country Church.

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 4430 9948 4447 9948 4449 9878 4423 9879
TIME...MOT...LOC 2319Z 269DEG 36KT 4436 9939 

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

Parkin

2 follow-up statements

829 
WWUS53 KABR 252348
SVSABR

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

SDC069-252356-
/O.CAN.KABR.SV.W.0071.000000T0000Z-210726T0000Z/
Hyde SD-
648 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HYDE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4427 9922 4448 9921 4449 9878 4423 9879
TIME...MOT...LOC 2346Z 269DEG 36KT 4436 9901 

$$

SDC059-260000-
/O.CON.KABR.SV.W.0071.000000T0000Z-210726T0000Z/
Hand SD-
648 PM CDT Sun Jul 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHERN HAND COUNTY...

At 646 PM CDT, a severe thunderstorm was located over Sunshine Bible
Academy, or 10 miles south of Miller, moving east at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated. At 632 pm, golfball size hail was reported 
         7 miles south southwest of Ree Heights.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pleasant Valley Country Church, Miller Dale Colony, Sunshine Bible
Academy and Vayland.

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 4427 9922 4448 9921 4449 9878 4423 9879
TIME...MOT...LOC 2346Z 269DEG 36KT 4436 9901 

HAIL...1.25IN
WIND...60MPH
 
$$

Parkin

127 
WWUS53 KABR 252357
SVSABR

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

SDC059-260007-
/O.EXP.KABR.SV.W.0071.000000T0000Z-210726T0000Z/
Hand SD-
657 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HAND COUNTY WILL
EXPIRE AT 700 PM CDT...
                
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 small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 4427 9922 4448 9921 4449 9878 4423 9879
TIME...MOT...LOC 2357Z 269DEG 36KT 4436 9889 

$$

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, 6:24 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	51 min
Jul 25, 6:41 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	25 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.