Alert archive / South Dakota / Tornado Warnings in 2014

Tornado Warning 35, NWS Sioux Falls, SD

June 18, 2014Jerauld County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 18, 2014, 6:44 PM CDT for Jerauld County, South Dakota. It was in force for 46 min. 4 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 18, 2014, 6:44 PM CDT (23:44 UTC)
Expired
Jun 18, 2014, 7:30 PM CDT
In force
46 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Jerauld County, SD

The radar

The Aberdeen radar (KABR), 151 km from the middle of the area, began a volume at 23:44 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

TimeReportWhereRemark
Jun 18, 6:49 PM CDTTORNADO16 Wsw Wessington Springs, SD
Jun 18, 6:54 PM CDTTORNADO3 E Gann Valley, SDTORNADO ON THE GROUND
Jun 18, 6:54 PM CDTTORNADO15 Wsw Wessington Sprin, SD
Jun 18, 7:02 PM CDTTORNADO10 E Gann Valley, 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.

IssuedProductOfficeLasted
Jun 18, 6:23 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.7 hours before the alert went out and 92 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, Aberdeen, SD at 12:00Z on 2014-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 826 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2014-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
826 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

803 
WFUS53 KFSD 182344
TORFSD
SDC073-190030-
/O.NEW.KFSD.TO.W.0035.140618T2344Z-140619T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
644 PM CDT WED JUN 18 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN JERAULD COUNTY IN CENTRAL SOUTH DAKOTA...

* UNTIL 730 PM CDT

* AT 641 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR GANN VALLEY...AND MOVING NORTHEAST AT 25
  MPH.

  HAZARD...TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF WESTERN
  JERAULD COUNTY.

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.

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

&&

LAT...LON 4419 9857 4394 9886 4394 9893 4417 9894
      4419 9893 4420 9857
TIME...MOT...LOC 2344Z 236DEG 23KT 4404 9894

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

WEISSER
1 follow-up statement
040 
WWUS53 KFSD 182353
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
653 PM CDT WED JUN 18 2014

SDC073-190030-
/O.CON.KFSD.TO.W.0035.000000T0000Z-140619T0030Z/
JERAULD SD-
653 PM CDT WED JUN 18 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN JERAULD COUNTY
UNTIL 730 PM CDT...

AT 650 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR GANN VALLEY...AND MOVING EAST AT 20 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
         LIKELY.

AT 651 PM CDT...A FUNNEL CLUOD WAS REPORTED WITH THIS STORM 9 MILES 
EAST SOUTHEAST OF GANN VALLEY.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF WESTERN JERAULD COUNTY.

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.

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

&&

LAT...LON 4419 9857 4394 9886 4394 9893 4417 9894
      4419 9893 4420 9857
TIME...MOT...LOC 2352Z 275DEG 17KT 4402 9890

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

WEISSER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 9:41 PM CDTSevere Thunderstorm WarningFSDLincoln, Union49 min
Jun 17, 9:44 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha46 min
Jun 17, 9:53 PM CDTSevere Thunderstorm WarningFSDMcCook52 min
Jun 17, 10:28 PM CDTSevere Thunderstorm WarningFSDLincoln47 min
Jun 17, 10:30 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha45 min
Jun 17, 10:33 PM CDTTornado WarningFSDMinnehaha27 min
Jun 17, 10:41 PM CDTSevere Thunderstorm WarningFSDMcCook, Miner49 min
Jun 17, 10:47 PM CDTSevere Thunderstorm WarningFSDHanson, McCook43 min
Jun 17, 10:58 PM CDTTornado WarningFSDMinnehaha32 min
Jun 17, 11:07 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha38 min
Jun 17, 11:20 PM CDTRiver Flood WarningFSDLincoln, Minnehaha63 hr
Jun 17, 11:22 PM CDTSevere Thunderstorm WarningFSDHanson, McCook53 min
Jun 17, 11:30 PM CDTSevere Thunderstorm WarningFSDDavison, Hanson, Miner, Sanborn45 min
Jun 18, 12:03 AM CDTSevere Thunderstorm WarningFSDHanson, McCook, Turner42 min
Jun 18, 12:39 AM CDTSevere Thunderstorm WarningFSDHanson, McCook51 min
Jun 18, 1:11 AM CDTSevere Thunderstorm WarningFSDMcCook49 min
Jun 18, 6:59 PM CDTTornado Warning Tornado observedFSDAurora, Brule, Jerauld31 min

Nearby

Tornado Warnings in South Dakota, 2014Every tornado warning in 2014Tornadoes in 2014

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.