Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 161, NWS Aberdeen, SD

August 30, 2021Hughes County, Lyman County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 30, 2021, 11:14 PM CDT for Hughes County, Lyman County, South Dakota. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 30, 2021, 11:14 PM CDT (04:14 UTC)
Expired: Aug 30, 2021, 11:34 PM CDT
In force: 20 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hughes County, SD, Lyman County, SD

The radar

The Aberdeen radar (KABR), 177 km from the middle of the area, began a volume at 04:16 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 30, 9:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 4.2 hours before the alert went out and 132 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: 205 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1953 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

016 
WUUS53 KABR 310414
SVRABR
SDC065-085-310445-
/O.NEW.KABR.SV.W.0161.210831T0414Z-210831T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
1114 PM CDT Mon Aug 30 2021

The National Weather Service in Aberdeen has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hughes County in central South Dakota...
  North central Lyman County in central South Dakota...

* Until 1145 PM CDT.

* At 1113 PM CDT, a severe thunderstorm was located near Joe Creek
  Rec Area, or 8 miles west of Lower Brule, moving north 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...
  Joe Creek Rec Area around 1130 PM CDT.

Other locations in the path of this severe thunderstorm include West
Bend Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4403 9982 4425 9980 4423 9968 4422 9966
      4422 9963 4419 9957 4418 9956 4401 9971
TIME...MOT...LOC 0413Z 193DEG 14KT 4407 9975 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Lueck

1 follow-up statement

382 
WWUS53 KABR 310434
SVSABR

Severe Weather Statement
National Weather Service Aberdeen SD
1134 PM CDT Mon Aug 30 2021

SDC065-085-310444-
/O.CAN.KABR.SV.W.0161.000000T0000Z-210831T0445Z/
Hughes SD-Lyman SD-
1134 PM CDT Mon Aug 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUGHES AND NORTH
CENTRAL LYMAN COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled.  However small hail, 
gusty winds and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
central South Dakota.

LAT...LON 4403 9982 4425 9980 4423 9968 4422 9966
      4422 9963 4419 9957 4418 9956 4401 9971
TIME...MOT...LOC 0432Z 193DEG 14KT 4415 9972 

$$

Lueck

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 11:10 PM CDT	Severe Thunderstorm Warning	ABR	Jones	25 min
Aug 30, 11:46 PM CDT	Areal Flood Warning	ABR	Lyman	37 min
Aug 31, 12:14 AM CDT	Flash Flood Warning	ABR	Lyman	6 hr
Aug 31, 12:33 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.