Alert archive / South Dakota / Tornado Warnings in 2009

Tornado Warning 11, NWS Sioux Falls, SD

June 16, 2009Beadle County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 16, 2009, 3:57 PM CDT for Beadle County, South Dakota. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 16, 2009, 3:57 PM CDT (20:57 UTC)
Expired
Jun 16, 2009, 4:13 PM CDT
In force
16 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon

County Beadle County, SD

The radar

The Aberdeen radar (KABR), 128 km from the middle of the area, began a volume at 20:57 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.0 hours before the alert went out and 319 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, Bismarck Municip, ND at 12:00Z on 2009-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 416 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 12:00Z on 2009-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 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
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 162057
TORFSD
SDC005-162130-
/O.NEW.KFSD.TO.W.0011.090616T2057Z-090616T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
357 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

* UNTIL 430 PM CDT

* AT 357 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO 12 MILES
  SOUTH OF WESSINGTON...OR 21 MILES SOUTHEAST OF MILLER. DOPPLER
  RADAR SHOWED THIS TORNADO MOVING SOUTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL BEADLE COUNTY THROUGH 410 PM CDT

THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY ISSUED FOR THE WARNED AREA.

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.

&&

LAT...LON 4432 9847 4420 9854 4426 9871 4437 9871
      4438 9871
TIME...MOT...LOC 2057Z 290DEG 19KT 4431 9869

$$
GILLISPIE
1 follow-up statement
000 
WWUS53 KFSD 162113
SVSFSD

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

SDC005-162122-
/O.CAN.KFSD.TO.W.0011.000000T0000Z-090616T2130Z/
BEADLE SD-
413 PM CDT TUE JUN 16 2009

...THE TORNADO WARNING FOR SOUTHWESTERN BEADLE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER 
APPEARED TO BE SEVERE. THERE IS A SECOND CELL TO THE SOUTH OF THIS 
WARNING AREA...ALONG THE BEADLE/JERAULD COUNTY LINE THAT IS STILL 
STRONG AND ROTATING...AND THE TORNADO WARNING FOR THAT CELL REMAINS 
IN EFFECT.

LAT...LON 4432 9847 4420 9854 4426 9871 4437 9871
      4438 9871
TIME...MOT...LOC 2112Z 290DEG 19KT 4428 9859

$$

GILLISPIE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 3:35 PM CDTSevere Thunderstorm WarningFSDBeadle25 min
Jun 16, 3:43 PM CDTTornado WarningFSDBeadle, Jerauld47 min
Jun 16, 4:29 PM CDTTornado WarningFSDBeadle, Jerauld46 min
Jun 16, 4:42 PM CDTSevere Thunderstorm WarningFSDBeadle33 min
Jun 16, 4:43 PM CDTTornado WarningFSDAurora40 min
Jun 16, 5:04 PM CDTTornado WarningFSDJerauld, Sanborn41 min
Jun 16, 5:11 PM CDTTornado WarningFSDAurora, Davison34 min
Jun 16, 5:28 PM CDTSevere Thunderstorm WarningFSDAurora, Davison, Jerauld, Sanborn47 min
Jun 16, 5:41 PM CDTTornado WarningFSDAurora, Davison49 min
Jun 16, 6:08 PM CDTTornado WarningFSDDavison, Douglas, Hanson, Hutchinson52 min
Jun 16, 6:18 PM CDTSevere Thunderstorm WarningFSDAurora, Davison, Jerauld, Sanborn29 min
Jun 16, 6:36 PM CDTTornado WarningFSDDavison, Hanson, Hutchinson39 min
Jun 16, 6:55 PM CDTSevere Thunderstorm WarningFSDDavison, Douglas, Hanson, Hutchinson35 min
Jun 16, 6:58 PM CDTSevere Thunderstorm WarningFSDDavison, Hanson, Miner, Sanborn32 min

Nearby

Tornado Warnings in South Dakota, 2009Every tornado warning in 2009Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.