Alert archive / South Dakota / Tornado Warnings in 2009

Tornado Warning 12, NWS Sioux Falls, SD

June 16, 2009Beadle County, Jerauld County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 16, 2009, 4:29 PM CDT for Beadle County, Jerauld County, South Dakota. It was in force for 46 min. 3 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: Jun 16, 2009, 4:29 PM CDT (21:29 UTC)
Expired: Jun 16, 2009, 5:15 PM CDT
In force: 46 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon

Counties Beadle County, SD, Jerauld County, SD

The radar

The Aberdeen radar (KABR), 144 km from the middle of the area, began a volume at 21:29 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
Jun 16, 4:42 PM CDT	HAIL 1.75	11 Nw Wessington Spring, SD	IN ADDITION TO THE GOLFBALL SIZE HAIL, WINDS WERE GUSTING TO 50-60 MPH.
Jun 16, 4:55 PM CDT	HAIL 0.75	6 Nw Wessington Springs, SD
Jun 16, 5:10 PM CDT	HAIL 1.5	Wessington Springs, SD	IN ADDITION TO WALNUT SIZE HAIL, 1.21 INCH OF RAIN FELL WITH THIS STORM.

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
Jun 16, 4:16 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.5 hours before the alert went out and 330 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: 416 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 115 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 162129
TORFSD
SDC005-073-162215-
/O.NEW.KFSD.TO.W.0012.090616T2129Z-090616T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
429 PM CDT TUE JUN 16 2009

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 515 PM CDT

* AT 427 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES. THIS
  DANGEROUS STORM WAS LOCATED 9 MILES SOUTHEAST OF DANFORTH...OR 27
  MILES SOUTHEAST OF MILLER...AND MOVING SOUTHEAST AT 25 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
   WESSINGTON SPRINGS AROUND 455 PM CDT...

TWO TO THREE INCH DIAMETER HAIL HAS BEEN REPORTED 1 MILE EAST OF 
COTTONWOOD LAKE WITH THIS STORM. IF YOU ARE IN THE PATH OF THE 
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 4417 9839 4400 9869 4420 9886 4421 9884
      4420 9872 4426 9870
TIME...MOT...LOC 2128Z 311DEG 20KT 4417 9873

$$

GILLISPIE

2 follow-up statements

000 
WWUS53 KFSD 162148
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
448 PM CDT TUE JUN 16 2009

SDC005-073-162215-
/O.CON.KFSD.TO.W.0012.000000T0000Z-090616T2215Z/
JERAULD SD-BEADLE SD-
448 PM CDT TUE JUN 16 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHWESTERN BEADLE AND NORTHERN JERAULD COUNTIES...

AT 447 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH VERY STRONG STRONG ROTATION. THIS TORNADO 
WAS LOCATED JUST NORTHWEST OF WESSINGTON SPRINGS...OR 27 MILES 
SOUTHWEST OF HURON...MOVING SOUTHEAST AT 15 MPH.

THE TORNADO WILL BE NEAR...
WESSINGTON SPRINGS AROUND 500 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING
FOR SOUTHEASTERN SOUTH DAKOTA.

&&

LAT...LON 4417 9839 4400 9869 4420 9886 4421 9884
      4420 9872 4426 9870
TIME...MOT...LOC 2147Z 305DEG 15KT 4411 9862

$$

GILLISPIE

000 
WWUS53 KFSD 162214
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
514 PM CDT TUE JUN 16 2009

SDC005-073-162223-
/O.EXP.KFSD.TO.W.0012.000000T0000Z-090616T2215Z/
JERAULD SD-BEADLE SD-
514 PM CDT TUE JUN 16 2009

...THE TORNADO WARNING FOR SOUTHWESTERN BEADLE AND NORTHERN JERAULD
COUNTIES EXPIRES AT 515 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE IN THIS 
AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING
FOR SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4417 9839 4400 9869 4420 9886 4421 9884
      4420 9872 4426 9870
TIME...MOT...LOC 2213Z 305DEG 15KT 4405 9850

$$

GILLISPIE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 3:35 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	25 min
Jun 16, 3:43 PM CDT	Tornado Warning	FSD	Beadle, Jerauld	47 min
Jun 16, 3:57 PM CDT	Tornado Warning	FSD	Beadle	16 min
Jun 16, 4:42 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	33 min
Jun 16, 4:43 PM CDT	Tornado Warning	FSD	Aurora	40 min
Jun 16, 5:04 PM CDT	Tornado Warning	FSD	Jerauld, Sanborn	41 min
Jun 16, 5:11 PM CDT	Tornado Warning	FSD	Aurora, Davison	34 min
Jun 16, 5:28 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Jerauld, Sanborn	47 min
Jun 16, 5:41 PM CDT	Tornado Warning	FSD	Aurora, Davison	49 min
Jun 16, 6:08 PM CDT	Tornado Warning	FSD	Davison, Douglas, Hanson, Hutchinson	52 min
Jun 16, 6:18 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Jerauld, Sanborn	29 min
Jun 16, 6:36 PM CDT	Tornado Warning	FSD	Davison, Hanson, Hutchinson	39 min
Jun 16, 6:55 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Douglas, Hanson, Hutchinson	35 min
Jun 16, 6:58 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	32 min

Nearby

Tornado Warnings in South Dakota, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.