Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Sioux Falls, SD

April 5, 2021Moody County, South Dakota; Pipestone County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 5, 2021, 7:39 PM CDT for Moody County, South Dakota; Pipestone County, Minnesota. It was in force for 36 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
Apr 5, 2021, 7:39 PM CDT (00:39 UTC)
Expired
Apr 5, 2021, 8:15 PM CDT
In force
36 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Pipestone County, MN, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 43 km from the middle of the area, began a volume at 00:40 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

TimeReportWhereRemark
Apr 5, 7:45 PM CDTHAIL 17 E Flandreau, SD

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 00:00Z, 0.7 hours before the alert went out and 183 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2021-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2021-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -70 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3053 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
-70 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

713 
WUUS53 KFSD 060039
SVRFSD
MNC117-SDC101-060115-
/O.NEW.KFSD.SV.W.0002.210406T0039Z-210406T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
739 PM CDT Mon Apr 5 2021

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Western Pipestone County in southwestern Minnesota...
  Southeastern Moody County in east central South Dakota...

* Until 815 PM CDT.

* At 739 PM CDT, a severe thunderstorm was located near Trent, or 12
  miles west of Pipestone, moving east at 30 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...
  Jasper around 750 PM CDT.
  Pipestone and Pipestone National Monument around 805 PM CDT.
  Trosky around 810 PM CDT.

Other locations impacted by this severe thunderstorm include Ihlen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4385 9672 4401 9671 4414 9626 4386 9622
TIME...MOT...LOC 0039Z 261DEG 25KT 4395 9654 

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

SG
2 follow-up statements
830 
WWUS53 KFSD 060102
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
802 PM CDT Mon Apr 5 2021

SDC101-060112-
/O.CAN.KFSD.SV.W.0002.000000T0000Z-210406T0115Z/
Moody SD-
802 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MOODY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4386 9644 4409 9644 4414 9626 4386 9622
TIME...MOT...LOC 0102Z 249DEG 29KT 4405 9627 

$$

MNC117-060115-
/O.CON.KFSD.SV.W.0002.000000T0000Z-210406T0115Z/
Pipestone MN-
802 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR WESTERN PIPESTONE COUNTY...

At 802 PM CDT, a severe thunderstorm was located near Pipestone
National Monument, or near Pipestone, moving east at 35 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 remain over mainly rural areas of
western Pipestone County, including the following locations... Ihlen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4386 9644 4409 9644 4414 9626 4386 9622
TIME...MOT...LOC 0102Z 249DEG 29KT 4405 9627 

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

SG
966 
WWUS53 KFSD 060107
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
807 PM CDT Mon Apr 5 2021

MNC117-060116-
/O.EXP.KFSD.SV.W.0002.000000T0000Z-210406T0115Z/
Pipestone MN-
807 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PIPESTONE COUNTY WILL
EXPIRE AT 815 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
this thunderstorm.

LAT...LON 4386 9644 4409 9644 4414 9626 4386 9622
TIME...MOT...LOC 0106Z 261DEG 25KT 4405 9625 

$$

SG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 7:03 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha27 min
Apr 5, 7:49 PM CDTSevere Thunderstorm WarningFSDHutchinson, Turner26 min
Apr 5, 8:44 PM CDTSevere Thunderstorm WarningFSDMinnehaha31 min
Apr 5, 9:04 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha, Turner26 min
Apr 5, 9:27 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha33 min
Apr 5, 9:48 PM CDTSevere Thunderstorm WarningFSDMinnehaha27 min
Apr 6, 9:39 AM CDTSevere Thunderstorm WarningFSDCharles Mix, Gregory10 min
Apr 5, 10:07 PM CDTSevere Thunderstorm WarningFSDNobles, Rock53 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2021Severe Thunderstorm Warnings in Minnesota, 2021Every 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.