Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS Aberdeen, SD

June 11, 20215 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 11, 2021, 2:37 AM CDT for 5 counties in South Dakota. It was in force for 38 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: Jun 11, 2021, 2:37 AM CDT (07:37 UTC)
Expired: Jun 11, 2021, 3:15 AM CDT
In force: 38 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Edmunds County, SD, Faulk County, SD, McPherson County, SD, Potter County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 76 km from the middle of the area, began a volume at 07:37 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
Jun 11, 2:46 AM CDT	TSTM WND DMG	10 E Eureka, SD	ROOF TORN OR PARTIALLY TORN OFF SHEDS AND GRAIN BIN AUGER TIPPED. RADAR ESTIMATED TIME.
Jun 11, 2:57 AM CDT	HAIL 1	4 Nne Tolstoy, SD
Jun 11, 3:03 AM CDT	HAIL 1	Tolstoy, SD	ABOUT 10 MINUTES OF HAIL. MOSTLY PEA TO DIME SIZED WITH A FEW QUARTERS MIXED IN. RADAR ESTIMATED TIME.

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
Jun 10, 9:08 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 11, 2:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 7.6 hours before the alert went out and 97 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: 1337 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 2725 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

933 
WUUS53 KABR 110737
SVRABR
SDC045-049-089-107-129-110815-
/O.NEW.KABR.SV.W.0027.210611T0737Z-210611T0815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
237 AM CDT Fri Jun 11 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Edmunds County in north central South Dakota...
  Western Faulk County in north central South Dakota...
  Eastern Potter County in north central South Dakota...
  McPherson County in north central South Dakota...
  Southeastern Walworth County in north central South Dakota...

* Until 315 AM CDT.

* At 237 AM CDT, severe thunderstorms were located along a line
  extending from near Venturia to near Bowdle to near Agar, moving
  east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Bowdle around 240 AM CDT.

Other locations in the path of these severe thunderstorms include
Roscoe, Ipswich, Pembrook Colony and Cravens Corner.

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 4544 9891 4489 9947 4490 10015 4537 9970
      4594 9969 4594 9891
TIME...MOT...LOC 0737Z 263DEG 41KT 4598 9966 4538 9966 4485 10019 

HAIL...<.75IN
WIND...60MPH
 
$$

Parkin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 11:06 PM CDT	Severe Thunderstorm Warning	ABR	Corson	39 min
Jun 11, 1:02 AM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	43 min
Jun 11, 1:15 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Jones, Stanley	45 min
Jun 11, 1:47 AM CDT	Special Weather Statement	ABR	Walworth	43 min
Jun 11, 2:54 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Potter, Sully	36 min
Jun 11, 3:16 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, McPherson, Potter, Walworth	44 min
Jun 11, 3:23 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Spink	52 min
Jun 11, 3:38 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Edmunds, Faulk, McPherson, Marshall and 1 more	52 min
Jun 11, 4:16 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Marshall and 2 more	44 min
Jun 11, 4:49 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Grant, Hamlin, Spink	41 min
Jun 11, 5:02 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Deuel, Grant, Marshall and 1 more	43 min
Jun 11, 5:35 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	40 min
Jun 11, 5:49 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Roberts	33 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.