Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 31, NWS Aberdeen, SD

June 11, 20217 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 11, 2021, 3:38 AM CDT for 7 counties in South Dakota. It was in force for 52 min. 4 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, 3:38 AM CDT (08:38 UTC)
Expired: Jun 11, 2021, 4:30 AM CDT
In force: 52 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Brown County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Marshall County, SD, McPherson County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 14 km from the middle of the area, began a volume at 08:37 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, 3:40 AM CDT	TSTM WND GST 80	3 Nw Westport, SD	PWS PEAK WIND GUST. RADAR ESTIMATED TIME.
Jun 11, 3:47 AM CDT	TSTM WND DMG	Hecla, SD	LARGE COTTONWOOD LIMB BROKEN OFF TREE.
Jun 11, 4:15 AM CDT	TSTM WND DMG	4 Wsw Andover, SD	FARM SHOP LOST ROOF. TIME ESTIMATED FROM RADAR.
Jun 11, 4:20 AM CDT	HAIL 1	2 Sse Claremont, SD

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 11, 2:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.6 hours before the alert went out and 49 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.

592 
WUUS53 KABR 110838
SVRABR
SDC013-037-045-049-089-091-115-110930-
/O.NEW.KABR.SV.W.0031.210611T0838Z-210611T0930Z/

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

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Eastern Edmunds County in north central South Dakota...
  Northwestern Day County in northeastern South Dakota...
  Western Marshall County in northeastern South Dakota...
  Brown County in northeastern South Dakota...
  Eastern Faulk County in north central South Dakota...
  Southeastern McPherson County in north central South Dakota...
  Northern Spink County in northeastern South Dakota...

* Until 430 AM CDT.

* At 338 AM CDT, severe thunderstorms were located along a line
  extending from 7 miles west of Hecla to near Rockham, moving east
  at 45 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.

* Severe thunderstorms will be near...
  Sand Lake Wildlife Refuge around 345 AM CDT.
  Hecla around 350 AM CDT.

Other locations in the path of these severe thunderstorms include
Redfield, Ashton, Britton, Frankfort and Kidder.

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 4593 9763 4487 9827 4489 9870 4490 9871
      4490 9910 4594 9856
TIME...MOT...LOC 0838Z 271DEG 37KT 4592 9829 4489 9888 

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

Parkin

1 follow-up statement

758 
WWUS53 KABR 110912
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
412 AM CDT Fri Jun 11 2021

SDC045-049-089-110921-
/O.CAN.KABR.SV.W.0031.000000T0000Z-210611T0930Z/
Edmunds SD-Faulk SD-McPherson SD-
412 AM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN EDMUNDS...EASTERN
FAULK AND SOUTHEASTERN MCPHERSON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 AM CDT for
central and northeastern South Dakota.

LAT...LON 4593 9763 4487 9827 4489 9870 4490 9871
      4490 9868 4593 9815
TIME...MOT...LOC 0911Z 271DEG 37KT 4591 9782 4488 9842 

$$

SDC013-037-091-115-110930-
/O.CON.KABR.SV.W.0031.000000T0000Z-210611T0930Z/
Day SD-Marshall SD-Brown SD-Spink SD-
412 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM CDT
FOR NORTHWESTERN DAY...WESTERN MARSHALL...EASTERN BROWN AND NORTHERN
SPINK COUNTIES...

At 411 AM CDT, severe thunderstorms were located along a line
extending from near Kidder to near Redfield, moving east at 45 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...
  Britton and Kidder.

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 4593 9763 4487 9827 4489 9870 4490 9871
      4490 9868 4593 9815
TIME...MOT...LOC 0911Z 271DEG 37KT 4591 9782 4488 9842 

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

Wise

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, 2:37 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, McPherson, Potter, Walworth	38 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, 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.