Alert archive / South Dakota / Tornado Warnings in 2009

Tornado Warning 20, NWS Sioux Falls, SD

June 16, 20095 counties in South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 16, 2009, 8:10 PM CDT for 5 counties in South Dakota. It was in force for 35 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, 8:10 PM CDT (01:10 UTC)
Expired: Jun 16, 2009, 8:45 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon

Counties Bon Homme County, SD, Clay County, SD, Hutchinson County, SD, Turner County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 01:13 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

Time	Report	Where	Remark
Jun 16, 8:28 PM CDT	TORNADO	1 Nw Mission Hill, SD
Jun 16, 8:31 PM CDT	TSTM WND GST 60	1 Se Irene, SD	IN ADDITION TO 60 MPH WIND GUSTS, NICKEL SIZE HAIL WAS REPORTED.
Jun 16, 8:55 PM CDT	HAIL 0.88	Utica, 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.

Issued	Product	Office	Lasted
Jun 16, 4:16 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.2 hours before the alert went out and 207 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: 264 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1545 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 170110
TORFSD
SDC009-027-067-125-135-170145-
/O.NEW.KFSD.TO.W.0020.090617T0110Z-090617T0145Z/

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA
  NORTHWESTERN CLAY COUNTY IN SOUTHEAST SOUTH DAKOTA
  SOUTHEASTERN HUTCHINSON COUNTY IN SOUTHEAST SOUTH DAKOTA
  SOUTHWESTERN TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA
  YANKTON COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 845 PM CDT

* AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO. THESE
  DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM SCOTLAND
  TO MAYFIELD TO IRENE...AND MOVING SOUTHEAST AT 25 MPH.

* THESE TORNADIC STORMS WILL BE NEAR...
   IRENE AROUND 815 PM CDT...
   LESTERVILLE AROUND 820 PM CDT...
   WAKONDA AROUND 830 PM CDT...
   UTICA...VOLIN AROUND 835 PM CDT...
   MISSION HILL...YANKTON AROUND 845 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR CONTINUES TO INDICATE MULTIPLE CIRCULATIONS ALONG THE 
LEADING EDGE OF THIS STORM. THIS STROM IS CAPABLE OF PRODUCING BRIEF 
TORNADOES ALONG THE LEADING EDGE OF THIS STORM.

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.

IN ADDITION TO THE TORNADO...THIS STORM IS EXPECTED TO PRODUCE
GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS WELL
AWAY FROM THE STORM CENTER.

&&

LAT...LON 4313 9786 4337 9757 4303 9706 4285 9729
      4286 9731 4286 9737 4286 9741 4285 9744
TIME...MOT...LOC 0109Z 313DEG 22KT 4312 9762 4307 9737
          4309 9719

$$

BT

2 follow-up statements

000 
WWUS53 KFSD 170121
SVSFSD

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

SDC009-027-067-125-135-170145-
/O.CON.KFSD.TO.W.0020.000000T0000Z-090617T0145Z/
TURNER SD-HUTCHINSON SD-YANKTON SD-BON HOMME SD-CLAY SD-
821 PM CDT TUE JUN 16 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN CLAY...NORTHEASTERN BON HOMME...YANKTON...SOUTHEASTERN
HUTCHINSON AND SOUTHWESTERN TURNER COUNTIES...

AT 818 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF TORNADO PRODUCING STORMS. THESE TORNADO PRODUCING
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LESTERVILLE TO
MAYFIELD TO IRENE...MOVING SOUTHEAST AT 25 MPH.

TORNADO PRODUCING STORMS WILL BE NEAR...
WAKONDA AROUND 825 PM CDT...
UTICA AND VOLIN AROUND 835 PM CDT...
MISSION HILL AROUND 845 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AT 817 PM...A WELL DEFINED WALL CLOUD WAS REPORTED FOUR MILES 
SOUTHWEST OF IRENE...MOVING EAST. 

NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO INDICATE 
MULTIPLE AREAS OF CIRCULATION ALONG THE LEADING EDGE OF THIS STORM.  
IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER IMMEDIATELY. 

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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 SOUTHEAST SOUTH DAKOTA.

&&

LAT...LON 4313 9786 4337 9757 4303 9706 4285 9729
      4286 9731 4286 9737 4286 9741 4285 9744
TIME...MOT...LOC 0119Z 313DEG 22KT 4308 9756 4303 9731
          4305 9713

$$

BT

000 
WWUS53 KFSD 170130
SVSFSD

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

SDC009-027-067-125-135-170145-
/O.CON.KFSD.TO.W.0020.000000T0000Z-090617T0145Z/
TURNER SD-HUTCHINSON SD-YANKTON SD-BON HOMME SD-CLAY SD-
830 PM CDT TUE JUN 16 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN CLAY...NORTHEASTERN BON HOMME...YANKTON...SOUTHEASTERN
HUTCHINSON AND SOUTHWESTERN TURNER COUNTIES...

...THIS IS A DANGEROUS STORM...IF YOU ARE IN THE PATH OF THIS STORM 
TAKE SHELTER NOW....

AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF TORNADO PRODUCING STORMS. THESE TORNADO PRODUCING
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LESTERVILLE TO VOLIN
TO WAKONDA...MOVING SOUTHEAST AT 25 MPH.

TORNADO PRODUCING STORMS WILL BE NEAR...
UTICA AND VOLIN AROUND 835 PM CDT...
MISSION HILL AROUND 845 PM CDT...

AT 828 PM...MEDIA REPORTED A TORNADO NINE MILES NORTH OF YANKTON.

MULTIPLE CIRCULATIONS HAVE BEEN DEPICTED WITH THIS STORM.  IF YOU 
ARE IN THE PATH OF THIS STORM...SEEK SHELTER IN THE CENTER PORTIONS 
OF A STURDY BUILDING. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

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 SOUTHEAST SOUTH DAKOTA.

&&

LAT...LON 4313 9786 4337 9757 4303 9706 4285 9729
      4286 9731 4286 9737 4286 9741 4285 9744
TIME...MOT...LOC 0128Z 313DEG 22KT 4304 9751 4299 9726
          4301 9708

$$


BT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Hutchinson, McCook	48 min
Jun 16, 7:39 PM CDT	Tornado Warning	FSD	Hutchinson, Turner, Yankton	36 min
Jun 16, 8:36 PM CDT	Tornado Warning	FSD	Bon Homme, Clay, Turner, Yankton	24 min
Jun 16, 8:58 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Yankton	32 min
Jun 16, 9:05 PM CDT	Tornado Warning	FSD	Bon Homme, Clay, Yankton	25 min
Jun 16, 9:27 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union, Yankton	48 min
Jun 16, 9:55 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	50 min
Jun 16, 10:47 PM CDT	Severe Thunderstorm Warning	FSD	Union	43 min
Jun 17, 3:59 AM CDT	Dense Fog Advisory	FSD	Lake, Lincoln, Minnehaha, Moody	5 hr
Jun 17, 5:43 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	47 min
Jun 17, 5:54 PM CDT	Tornado Warning	FSD	Gregory	36 min
Jun 17, 6:31 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	44 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.