Alert archive / South Dakota / Tornado Warnings in 2006

Tornado Warning 19, NWS Sioux Falls, SD

August 24, 2006Beadle County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Aug 24, 2006, 7:11 PM CDT for Beadle County, South Dakota. It was in force for 64 min. 7 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
Aug 24, 2006, 7:11 PM CDT (00:11 UTC)
Expired
Aug 24, 2006, 8:15 PM CDT
In force
64 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

County Beadle County, SD

The radar

The Aberdeen radar (KABR), 124 km from the middle of the area, began a volume at 00:13 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
Aug 24, 7:13 PM CDTTORNADO3 Sw Huron, SD
Aug 24, 7:15 PM CDTTORNADOHuron, SDTORNADO ALONG 21ST STREET ON SOUTH SIDE OF HURON
Aug 24, 7:17 PM CDTFUNNEL CLOUD5 Sw Cavour, SD
Aug 24, 7:22 PM CDTTORNADO4 Se Huron, SDTORNADO ROPED OUT.
Aug 24, 7:33 PM CDTTORNADO6 Sw Cavour, SDLARGE WEDGE TORNADO.
Aug 24, 7:35 PM CDTTORNADO4 Ssw Cavour, SD
Aug 24, 7:38 PM CDTTORNADO4 S Cavour, 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.

IssuedProductOfficeLasted
Aug 24, 5:51 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.2 hours before the alert went out and 63 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 2006-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1638 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2006-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
1638 J/kg
Mixed-layer CIN
-178 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.2
Supercell composite
7.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KFSD 250012
TORFSD
SDC005-250115-
/O.NEW.KFSD.TO.W.0019.060825T0011Z-060825T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
711 PM CDT THU AUG 24 2006

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  BEADLE COUNTY IN EAST CENTRAL SOUTH DAKOTA

* UNTIL 815 PM CDT

* AT 711 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  NORTHEAST OF VIRGIL...OR ABOUT 7 MILES WEST OF HURON...MOVING EAST
  AT 30 MPH.

* THE TORNADO WILL BE NEAR...
   HURON AROUND 720 PM CDT...
   CAVOUR AROUND 735 PM CDT...
   YALE AROUND 740 PM CDT...

DOPPLER RADAR IS CURRENTLY INDICATING NEW CELL DEVELOPMENT ON THE 
LEADING EDGE OF THIS STORM. 


THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$

BT
8 follow-up statements
000 
WWUS53 KFSD 250015
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
713 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
713 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 713 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 5 MILES NORTHEAST OF
VIRGIL...OR ABOUT 3 MILES WEST OF HURON...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
   HURON AROUND 715 PM CDT...
   CAVOUR AROUND 740 PM CDT...
   YALE AROUND 745 PM CDT...

A LARGE TORNADO WAS REPORTED AT 713 BY EMERGENCY MANAGEMENT 3 MILES 
SOUTHWEST OF HURON. 

ADDITIONALY...A SECOND STORM IS DEVELOPING AHEAD OF THIS STORM.  
THIS STORM HAS ALSO HAS THE POTENTIAL TO PRODUCE A TORNADO.  THIS 
STORM IS LOCATED NEAR CAVOUR. 

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$

BT
000 
WWUS53 KFSD 250020
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
717 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
717 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 717 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HURON...MOVING
EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
   CAVOUR AROUND 725 PM CDT...
   YALE AROUND 730 PM CDT...

AT 715 PM..EMERGENCY MANAGEMENT REPORTED A TORNADO NEAR 21ST STREET 
ON THE SOUTHERN EDGE OF HURON.  

AT 717 PM....A RAPIDLY ROTATING WALL CLOUD AND FUNNEL CLOUD WAS 
REPORTED 5 MILES SOUTHWEST OF CAVOUR BY TRAINED WEATHER SPOTTERS.  

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT
000 
WWUS53 KFSD 250027
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
726 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
726 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 726 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 5 MILES SOUTH OF HURON 
MOVING EAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
   CAVOUR AROUND 735 PM CDT...
   YALE AROUND 740 PM CDT...

AT 722 PM...TRAINED WEATHER SPOTTERED REPORTED THAT THE TORNADO HAD 
ROPED OUT.  HOWEVER...A NEW WALL CLOUD AND ASSOCIATED FUNNEL WAS 
DEVELOPING ON THE SOUTHERN EDGE OF THIS STORM. 

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT
000 
WWUS53 KFSD 250032
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
730 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
730 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES SOUTHEAST OF
HURON...MOVING EAST AT 35 MPH.

THE TORNADO WILL BE...
  SOUTH OF CAVOUR AROUND 735 PM CDT...
   
DOPPLER RADAR HAS INDICTAED TWO SEPERATE AREAS OF ROTATION THAT HAVE 
BEEN INCREASING IN INTENSITY...IF YOU LIVE IN THE SOUTHEASTERN 
PORTION OF BEADLE COUNTY...TAKE COVER NOW. THIS IS AN EXTREMELY 
DANGEROUS AND LIFE THREATENING SITUATION. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING 
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR 
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT
000 
WWUS53 KFSD 250037
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
735 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
735 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES SOUTHWEST OF
CAVOUR...OR ABOUT 8 MILES SOUTHEAST OF HURON...MOVING EAST AT 35 MPH.

THE TORNADO WILL BE IN...
   RURAL BEADLE COUNTY...

AT 733 PM...LOCAL MEDIA REPORTED A LARGE TORNADO ON THE GROUND.
THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE 
COVER NOW IF YOU ARE IN SOUTHEASTERN BEADLE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT
000 
WWUS53 KFSD 250041
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
739 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
739 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 739 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES SOUTH OF
CAVOUR...OR ABOUT 10 MILES SOUTHEAST OF HURON...MOVING EAST AT 35
MPH.

THE TORNADO WILL BE NEAR...
  RURAL BEADLE COUNTY THROUGH 750 PM CDT


AT 735 PM...BEADLE COUNTY EM REPORTED A FUNNEL CLOUD 6 MILES SOUTH 
OF CAVOUR.  

AT 735 PM...TRAINED WEATHER SPOTTERS REPORTED A LARGE WEDGE TORNADO 
SOUTH OF CAVOUR. 

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$

BT
000 
WWUS53 KFSD 250046
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
745 PM CDT THU AUG 24 2006

SDC005-250115-
/O.CON.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
745 PM CDT THU AUG 24 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BEADLE
COUNTY...

AT 745 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 9 MILES SOUTHEAST OF
CAVOUR...OR ABOUT 16 MILES SOUTHEAST OF HURON...MOVING EAST AT 30
MPH.


DOPPLER RADAR HAS INIDICATED THAT THE ROTATION SOUTH OF CAVOUR HAS 
WEAKENED...HOWEVER...RADAR HAS INDICATED A SECOND AREA OF ROTATION 
RAPIDLY INCREASING 8 MILES SOUTH OF IROQUOIS. 

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.



A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT
000 
WWUS53 KFSD 250114
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
814 PM CDT THU AUG 24 2006

SDC005-250124-
/O.EXP.KFSD.TO.W.0019.000000T0000Z-060825T0115Z/
BEADLE SD-
814 PM CDT THU AUG 24 2006

...THE TORNADO WARNING FOR BEADLE COUNTY EXPIRES AT 815 PM CDT...

THE STORM HAS EXITED THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CDT THURSDAY EVENING FOR SOUTHWEST MINNESOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING FOR
NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4444 9847 4420 9848 4421 9786 4445 9787

$$
BT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 7:23 PM CDTTornado WarningFSDKingsbury52 min
Aug 24, 8:01 PM CDTTornado WarningFSDMiner36 min
Aug 24, 8:12 PM CDTTornado WarningFSDKingsbury33 min
Aug 24, 8:27 PM CDTSevere Thunderstorm WarningFSDHanson, McCook37 min
Aug 24, 9:25 PM CDTSevere Thunderstorm WarningFSDMinnehaha35 min

Nearby

Tornado Warnings in South Dakota, 2006Every tornado warning in 2006Tornadoes in 2006

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.