Alert archive / South Dakota / Tornado Warnings in 2014

Tornado Warning 31, NWS Sioux Falls, SD

June 17, 2014Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 17, 2014, 10:58 PM CDT for Minnehaha County, South Dakota. It was in force for 32 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 17, 2014, 10:58 PM CDT (03:58 UTC)
Expired: Jun 17, 2014, 11:30 PM CDT
In force: 32 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 26 km from the middle of the area, began a volume at 03:58 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 17, 11:00 PM CDT	TORNADO	1 Sw Humboldt, 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 17, 6:48 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 4.0 hours before the alert went out and 179 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: 1177 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1299 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

033 
WFUS53 KFSD 180358
TORFSD
SDC099-180430-
/O.NEW.KFSD.TO.W.0031.140618T0358Z-140618T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1058 PM CDT TUE JUN 17 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA...

* UNTIL 1130 PM CDT

* AT 1055 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A 
  TORNADO WAS LOCATED JUST SOUTH OF HUMBOLDT...AND MOVING NORTHWEST
  AT 10 MPH.

  HAZARD...TORNADO AND HALF DOLLAR 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.

* THIS DANGEROUS STORM WILL BE NEAR...
  HUMBOLDT AROUND 1110 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4359 9699 4356 9705 4357 9712 4369 9713
      4368 9699
TIME...MOT...LOC 0358Z 144DEG 8KT 4362 9708

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

CHAPMAN

3 follow-up statements

741 
WWUS53 KFSD 180403
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1103 PM CDT TUE JUN 17 2014

SDC099-180430-
/O.CON.KFSD.TO.W.0031.000000T0000Z-140618T0430Z/
MINNEHAHA SD-
1103 PM CDT TUE JUN 17 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL MINNEHAHA
COUNTY UNTIL 1130 PM CDT...

AT 1100 PM CDT...A CONFIRMED TORNADO WAS LOCATED JUST SOUTHWEST OF 
HUMBOLDT...AND MOVING NORTHWEST AT 10 MPH.

HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

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 TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF WEST CENTRAL
MINNEHAHA COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4359 9699 4356 9705 4357 9712 4369 9713
      4368 9699
TIME...MOT...LOC 0404Z 142DEG 8KT 4363 9710

TORNADO...OBSERVED
HAIL...1.25IN

$$

CHAPMAN

260 
WWUS53 KFSD 180412
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1112 PM CDT TUE JUN 17 2014

SDC099-180430-
/O.CON.KFSD.TO.W.0031.000000T0000Z-140618T0430Z/
MINNEHAHA SD-
1112 PM CDT TUE JUN 17 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL MINNEHAHA
COUNTY UNTIL 1130 PM CDT...

AT 1110 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR HUMBOLDT...AND MOVING NORTHWEST AT 20 MPH.

HAZARD...TORNADO AND HALF DOLLAR 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.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF WEST CENTRAL 
MINNEHAHA COUNTY TO THE WEST NORTHWEST OF HUMBOLDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4362 9705 4361 9709 4361 9712 4369 9713
      4368 9699
TIME...MOT...LOC 0412Z 154DEG 16KT 4367 9712

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

CHAPMAN

874 
WWUS53 KFSD 180415
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1115 PM CDT TUE JUN 17 2014

SDC099-180425-
/O.CAN.KFSD.TO.W.0031.000000T0000Z-140618T0430Z/
MINNEHAHA SD-
1115 PM CDT TUE JUN 17 2014

...THE TORNADO WARNING FOR WEST CENTRAL MINNEHAHA COUNTY IS
CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.

LAT...LON 4362 9705 4361 9709 4361 9712 4369 9713
      4368 9699
TIME...MOT...LOC 0415Z 154DEG 16KT 4368 9713

$$

CHAPMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	49 min
Jun 17, 9:44 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	46 min
Jun 17, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	McCook	52 min
Jun 17, 10:28 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	47 min
Jun 17, 10:30 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	45 min
Jun 17, 10:33 PM CDT	Tornado Warning	FSD	Minnehaha	27 min
Jun 17, 10:41 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Miner	49 min
Jun 17, 10:47 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	43 min
Jun 17, 11:07 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	38 min
Jun 17, 11:20 PM CDT	River Flood Warning	FSD	Lincoln, Minnehaha	63 hr
Jun 17, 11:22 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	53 min
Jun 17, 11:30 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	45 min
Jun 18, 12:03 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook, Turner	42 min
Jun 18, 12:39 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	51 min
Jun 18, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	McCook	49 min
Jun 18, 6:44 PM CDT	Tornado Warning	FSD	Jerauld	46 min
Jun 18, 6:59 PM CDT	Tornado Warning Tornado observed	FSD	Aurora, Brule, Jerauld	31 min

Nearby

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