Alert archive / South Dakota / Tornado Warnings in 2006

Tornado Warning 7, NWS Sioux Falls, SD

May 2, 2006Kingsbury County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at May 2, 2006, 6:20 PM CDT for Kingsbury County, South Dakota. It was in force for 25 min. 2 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: May 2, 2006, 6:20 PM CDT (23:20 UTC)
Expired: May 2, 2006, 6:45 PM CDT
In force: 25 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

County Kingsbury County, SD

The radar

The Sioux Falls radar (KFSD), 106 km from the middle of the area, began a volume at 23:23 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
May 2, 6:23 PM CDT	TORNADO	4 N Lake Preston, SD	DESTROYED HOG FARROWING BARN AND ADJACENT OUTBUILDING. NUMEROUS HOGS KILLED. SEVERAL TREES DOWN.
May 2, 6:25 PM CDT	TORNADO	4 Ne Lake Preston, SD	DEBRIS NOTED WITH ONGOING TORNADO.

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
May 2, 3:06 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 98 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1725 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 022321
TORFSD
SDC077-022345-
/O.NEW.KFSD.TO.W.0007.060502T2320Z-060502T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
620 PM CDT TUE MAY 2 2006

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF
  BADGER...OR ABOUT 26 MILES WEST OF ESTELLINE...MOVING EAST AT 20
  MPH.

* THE TORNADO WILL BE NEAR...
   BADGER AROUND 640 PM CDT...

THE SPOTTER REPORTED A TORNADO ON THE GROUND NEAR ERWIN. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND
SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4441 9714 4437 9735 4437 9743 4436 9744
      4437 9746 4442 9746 4452 9750 4454 9749
      4454 9714

$$

LIEBL

1 follow-up statement

000 
WWUS53 KFSD 022329
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
627 PM CDT TUE MAY 2 2006

SDC077-022345-
/O.CON.KFSD.TO.W.0007.000000T0000Z-060502T2345Z/
KINGSBURY SD-
627 PM CDT TUE MAY 2 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR KINGSBURY
COUNTY...

AT 627 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS 
TORNADO WAS LOCATED 6 MILES SOUTHEAST OF ERWIN...OR ABOUT 24 MILES 
WEST OF ESTELLINE...MOVING EAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
   BADGER AROUND 640 PM CDT...

A TORNADO HAS BEEN CONFIRMED. TAKE COVER IN A STURDY BUILDING NOW.
MOBILE HOMES AND VEHICLES ARE NOT SAFE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA AND NORTHEAST NEBRASKA AND
SOUTHEASTERN SOUTH DAKOTA.

AT 625 PM SPOTTER REPORTED THAT THIS TORNADO HAS DESTROYED A POLE 
BARN SOUTHEAST OF ERWIN.

LAT...LON 4441 9714 4437 9735 4437 9743 4436 9744
      4437 9746 4442 9746 4452 9750 4454 9749
      4454 9714

$$

LIEBL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 4:20 PM CDT	Severe Thunderstorm Warning	FSD	Clay	25 min
May 2, 4:35 PM CDT	Severe Thunderstorm Warning	FSD	Union	25 min
May 2, 4:59 PM CDT	Severe Thunderstorm Warning	FSD	Union	31 min
May 2, 6:35 PM CDT	Tornado Warning	FSD	Brookings	17 min
May 2, 6:41 PM CDT	Tornado Warning	FSD	Kingsbury	8 min

Nearby

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