Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Sioux Falls, SD

April 5, 2021Lincoln County, Minnehaha County, Turner County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 5, 2021, 9:04 PM CDT for Lincoln County, Minnehaha County, Turner County, South Dakota. It was in force for 26 min. 6 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
Apr 5, 2021, 9:04 PM CDT (02:04 UTC)
Expired
Apr 5, 2021, 9:30 PM CDT
In force
26 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Lincoln County, SD, Minnehaha County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 14 km from the middle of the area, began a volume at 02:03 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, 9:13 PM CDTHAIL 11 Ne Tea, SDREPORTED VIA MPING.
Apr 5, 9:20 PM CDTHAIL 14 Ene Tea, SDREPORT RECEIVED VIA MPING.
Apr 5, 9:20 PM CDTHAIL 14 Ene Tea, SDREPORT RECEIVED VIA SOCIAL MEDIA.
Apr 5, 9:21 PM CDTHAIL 11 Nne Harrisburg, SD
Apr 5, 9:25 PM CDTHAIL 1.253 E Harrisburg, SD
Apr 5, 9:27 PM CDTHAIL 1.754 Ene Harrisburg, SDLAKE ALVIN AREA. REPORTED VIA SOCIAL MEDIA.

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, 2.1 hours before the alert went out and 206 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.

551 
WUUS53 KFSD 060204
SVRFSD
SDC083-099-125-060230-
/O.NEW.KFSD.SV.W.0005.210406T0204Z-210406T0230Z/

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

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  South central Minnehaha County in southeastern South Dakota...
  Northwestern Lincoln County in southeastern South Dakota...
  Northeastern Turner County in southeastern South Dakota...

* Until 930 PM CDT.

* At 904 PM CDT, a severe thunderstorm was located near Tea, or 10
  miles southwest of Sioux Falls, moving northeast at 30 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Tea around 910 PM CDT.
  Harrisburg around 925 PM CDT.
  Sioux Falls and Lake Alvin State Recreation Area around 930 PM 
  CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4332 9704 4353 9705 4367 9669 4350 9659
      4350 9660 4348 9658 4345 9660 4343 9659
TIME...MOT...LOC 0204Z 246DEG 25KT 4346 9691 

HAIL...1.00IN
WIND...<50MPH
 
$$

SG
2 follow-up statements
858 
WWUS53 KFSD 060214
SVSFSD

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

SDC125-060224-
/O.CAN.KFSD.SV.W.0005.000000T0000Z-210406T0230Z/
Turner SD-
914 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TURNER 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 4335 9690 4354 9692 4367 9669 4350 9659
      4350 9660 4348 9658 4345 9660 4343 9659
TIME...MOT...LOC 0214Z 241DEG 25KT 4346 9681 

$$

SDC083-099-060230-
/O.CON.KFSD.SV.W.0005.000000T0000Z-210406T0230Z/
Minnehaha SD-Lincoln SD-
914 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR SOUTH CENTRAL MINNEHAHA AND NORTHWESTERN LINCOLN COUNTIES...

At 914 PM CDT, a severe thunderstorm was located over Tea, or near
Sioux Falls, moving northeast at 30 mph.

HAZARD...Half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Harrisburg around 925 PM CDT.
  Lake Alvin State Recreation Area around 930 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4335 9690 4354 9692 4367 9669 4350 9659
      4350 9660 4348 9658 4345 9660 4343 9659
TIME...MOT...LOC 0214Z 241DEG 25KT 4346 9681 

HAIL...1.25IN
WIND...<50MPH
 
$$

SG
078 
WWUS53 KFSD 060223
SVSFSD

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

SDC083-099-060230-
/O.CON.KFSD.SV.W.0005.000000T0000Z-210406T0230Z/
Minnehaha SD-Lincoln SD-
923 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR SOUTH CENTRAL MINNEHAHA AND NORTHWESTERN LINCOLN COUNTIES...

At 922 PM CDT, a severe thunderstorm was located over Harrisburg, or
near Sioux Falls, moving northeast at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Public. At 913 PM, quarter sized hail was reported 1 mile 
         northeast of Tea.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Lake Alvin State Recreation Area around 930 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4336 9685 4356 9686 4367 9669 4350 9659
      4350 9660 4348 9658 4345 9660 4343 9659
TIME...MOT...LOC 0222Z 243DEG 26KT 4346 9672 

HAIL...1.00IN
WIND...<50MPH
 
$$

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, 7:39 PM CDTSevere Thunderstorm WarningFSDMoody36 min
Apr 5, 7:49 PM CDTSevere Thunderstorm WarningFSDHutchinson, Turner26 min
Apr 5, 8:44 PM CDTSevere Thunderstorm WarningFSDMinnehaha31 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

Nearby

Severe Thunderstorm Warnings in South Dakota, 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.