Alert archive / South Dakota / Tornado Warnings in 2013

Tornado Warning 7, NWS Sioux Falls, SD

June 21, 2013Beadle County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 21, 2013, 2:07 PM CDT for Beadle County, South Dakota. It was in force for 38 min. 1 report 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 21, 2013, 2:07 PM CDT (19:07 UTC)
Expired: Jun 21, 2013, 2:45 PM CDT
In force: 38 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Beadle County, SD

The radar

The Aberdeen radar (KABR), 102 km from the middle of the area, began a volume at 19:08 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 21, 2:40 PM CDT	TSTM WND GST 65	4 Nw Yale, 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 21, 9:09 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 1:58 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.1 hours before the alert went out and 46 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: 267 J/kg
Mixed-layer CIN: -511 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -71 m²/s²
0-3 km storm-relative helicity: -66 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.

876 
WFUS53 KFSD 211907
TORFSD
SDC005-211945-
/O.NEW.KFSD.TO.W.0007.130621T1907Z-130621T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
207 PM CDT FRI JUN 21 2013

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 245 PM CDT

* AT 205 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 9 MILES EAST OF HITCHCOCK...AND MOVING
  SOUTHEAST AT 25 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL BE NEAR...
  YALE AROUND 245 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4464 9794 4460 9785 4451 9785 4439 9797
      4461 9838 4464 9834
TIME...MOT...LOC 1908Z 304DEG 20KT 4463 9820

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

BT

2 follow-up statements

180 
WWUS53 KFSD 211920
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
220 PM CDT FRI JUN 21 2013

SDC005-211945-
/O.CON.KFSD.TO.W.0007.000000T0000Z-130621T1945Z/
BEADLE SD-
220 PM CDT FRI JUN 21 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN BEADLE COUNTY
UNTIL 245 PM CDT...

AT 216 PM CDT...A CONFIRMED TORNADO WAS LOCATED 12 MILES WEST OF
CARPENTER...AND MOVING EAST AT 15 MPH.

HAZARD...DAMAGING TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD WITH THIS STORM 
NEAR HITCHCOCK.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

THIS TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
BEADLE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4464 9794 4460 9785 4451 9785 4439 9797
      4461 9838 4464 9834
TIME...MOT...LOC 1920Z 276DEG 14KT 4462 9813

TORNADO...OBSERVED
HAIL...1.75IN

$$

BT

142 
WWUS53 KFSD 211948
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
248 PM CDT FRI JUN 21 2013

SDC005-211959-
/O.EXP.KFSD.TO.W.0007.000000T0000Z-130621T1945Z/
BEADLE SD-
248 PM CDT FRI JUN 21 2013

...THE TORNADO WARNING FOR NORTHEASTERN BEADLE COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4464 9794 4460 9785 4451 9785 4439 9797
      4461 9838 4464 9834
TIME...MOT...LOC 1920Z 276DEG 14KT 4462 9813

$$

BT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 1:40 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Brule, Jerauld	50 min
Jun 21, 1:56 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	49 min
Jun 21, 2:12 PM CDT	Flash Flood Watch	FSD	Beadle, Brookings, Davison, Hanson, Kingsbury, Lake and 7 more	17 hr
Jun 21, 2:17 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	28 min
Jun 21, 2:30 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Kingsbury, Miner, Sanborn	45 min
Jun 21, 2:48 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Jerauld, McCook, Miner and 1 more	27 min
Jun 21, 2:53 PM CDT	Tornado Warning	FSD	Beadle, Kingsbury	37 min
Jun 21, 3:03 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Brookings, Kingsbury, Lake, Miner, Moody and 1 more	42 min
Jun 21, 3:40 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner, Moody	50 min
Jun 21, 4:23 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Moody	37 min

Nearby

Tornado Warnings in South Dakota, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.