Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 68, NWS Aberdeen, SD

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

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2021, 5:37 PM CDT for Hughes County, Stanley County, South Dakota. It was in force for 14 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, 5:37 PM CDT (22:37 UTC)
Expired: Jul 25, 2021, 5:51 PM CDT
In force: 14 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hughes County, SD, Stanley County, SD

The radar

The Aberdeen radar (KABR), 193 km from the middle of the area, began a volume at 22:39 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, 5:42 PM CDT	HAIL 1.75	1 Nne Pierre, SD	QUARTER TO GOLF BALL SIZE HAIL REPORTED ON SOCIAL MEDIA WITH PHOTO. TIME ESTIMATED.

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, 10.6 hours before the alert went out and 163 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.

705 
WUUS53 KABR 252237
SVRABR
SDC065-117-252315-
/O.NEW.KABR.SV.W.0068.210725T2237Z-210725T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
537 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...
  Northwestern Hughes County in central South Dakota...

* Until 615 PM CDT/515 PM MDT/.

* At 537 PM CDT/437 PM MDT/, a severe thunderstorm was located over
  Fort Pierre, moving east 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...
  Pierre around 540 PM CDT.

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.

If on or near Lake Oahe, get away from the water and move indoors or 
inside a vehicle. Remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 4433 10043 4441 10047 4446 10011 4425 10010
TIME...MOT...LOC 2237Z 269DEG 16KT 4437 10037 

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

Parkin

1 follow-up statement

869 
WWUS53 KABR 252251
SVSABR

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

SDC065-117-252301-
/O.CAN.KABR.SV.W.0068.000000T0000Z-210725T2315Z/
Stanley SD-Hughes SD-
551 PM CDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STANLEY AND
NORTHWESTERN HUGHES COUNTIES IS CANCELLED...
                
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 has been cancelled.

LAT...LON 4433 10043 4441 10047 4446 10011 4425 10010
TIME...MOT...LOC 2249Z 269DEG 16KT 4437 10028 

$$

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, 5:55 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, 6:41 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.