Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 47, NWS Aberdeen, SD

July 3, 2021Jones County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 3, 2021, 6:57 PM CDT for Jones County, South Dakota. It was in force for 33 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 3, 2021, 6:57 PM CDT (23:57 UTC)
Expired: Jul 3, 2021, 7:30 PM CDT
In force: 33 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Jones County, SD

The radar

The Rapid City radar (KUDX), 164 km from the middle of the area, began a volume at 23:56 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 3, 7:00 PM CDT	HAIL 0.25	2 Nnw Okaton, SD	GUSTY WINDS TO 40 MPH ACCOMPANIED THE HAIL.

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.

Issued	Product	Office	Lasted
Jul 3, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 12.0 hours before the alert went out and 167 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: 444 J/kg
Mixed-layer CIN: -308 J/kg
Mixed-layer LCL: 2214 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

284 
WUUS53 KABR 032357
SVRABR
SDC075-040100-
/O.NEW.KABR.SV.W.0047.210703T2357Z-210704T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
657 PM CDT Sat Jul 3 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Southwestern Jones County in central South Dakota...

* Until 800 PM CDT.

* At 657 PM CDT, a severe thunderstorm was located near Okaton, or 11
  miles west of Murdo, moving southeast 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...
  Okaton around 710 PM CDT.

Other locations in the path of this severe thunderstorm include
Westover.

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 4374 10075 4372 10079 4376 10081 4376 10084
      4378 10088 4380 10088 4379 10090 4383 10093
      4381 10095 4385 10099 4385 10106 4396 10107
      4405 10082 4374 10062 4375 10065 4371 10068
      4373 10070 4371 10073
TIME...MOT...LOC 2357Z 334DEG 14KT 4393 10093 

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

SD

1 follow-up statement

627 
WWUS53 KABR 040030
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
730 PM CDT Sat Jul 3 2021

SDC075-040039-
/O.CAN.KABR.SV.W.0047.000000T0000Z-210704T0100Z/
Jones SD-
730 PM CDT Sat Jul 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JONES COUNTY 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.  However gusty winds are
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
central South Dakota.

Remember, a Severe Thunderstorm Warning still remains in effect for 
in Jones County until 1100 PM CDT.

LAT...LON 4374 10075 4372 10079 4376 10081 4376 10084
      4378 10088 4380 10088 4379 10090 4383 10093
      4381 10095 4385 10099 4385 10106 4396 10107
      4405 10082 4374 10062 4375 10065 4371 10068
      4373 10070 4371 10073
TIME...MOT...LOC 0027Z 334DEG 14KT 4382 10085 

$$

SD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 2:57 AM CDT	Red Flag Warning	ABR	Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more	15 hr
Jul 3, 5:05 PM CDT	Special Weather Statement	ABR	Jones	25 min
Jul 3, 5:36 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	39 min
Jul 3, 5:42 PM CDT	Special Weather Statement	ABR	Dewey	33 min
Jul 3, 6:10 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	50 min
Jul 3, 6:29 PM CDT	Special Weather Statement	ABR	Walworth	31 min
Jul 3, 6:35 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Potter, Walworth	40 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.