Alert archive / South Dakota / Tornado Warnings in 2015

Tornado Warning 16, NWS Sioux Falls, SD

July 6, 2015McCook County, Turner County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jul 6, 2015, 12:23 AM CDT for McCook County, Turner County, South Dakota. It was in force for 24 min. 2 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: Jul 6, 2015, 12:23 AM CDT (05:23 UTC)
Expired: Jul 6, 2015, 12:47 AM CDT
In force: 24 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties McCook County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 41 km from the middle of the area, began a volume at 05:23 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
Jul 6, 12:24 AM CDT	TORNADO	3 S Dolton, SD	GRAVESTONES TOPPLED
Jul 6, 12:33 AM CDT	TSTM WND DMG	Marion, SD	3 INCH DIAMETER TREE BRANCHES DOWN

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
Jul 5, 7:42 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 185 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: 1725 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1201 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

084 
WFUS53 KFSD 060523
TORFSD
SDC087-125-060600-
/O.NEW.KFSD.TO.W.0016.150706T0523Z-150706T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1223 AM CDT MON JUL 6 2015

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN TURNER COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
  SOUTHEASTERN MCCOOK COUNTY IN SOUTHEASTERN SOUTH DAKOTA...

* UNTIL 100 AM CDT
    
* AT 1223 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER DOLTON...OR 11 MILES WEST OF PARKER...
  MOVING EAST AT 30 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 BE NEAR...
  MARION AROUND 1230 AM CDT.
  MONROE AROUND 1240 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9713 4343 9706 4340 9740 4346 9740
      4354 9716
TIME...MOT...LOC 0523Z 257DEG 25KT 4345 9736 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

CHAPMAN

2 follow-up statements

020 
WWUS53 KFSD 060532
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1232 AM CDT MON JUL 6 2015

SDC087-060540-
/O.CAN.KFSD.TO.W.0016.000000T0000Z-150706T0600Z/
MCCOOK SD-
1232 AM CDT MON JUL 6 2015

...THE TORNADO WARNING FOR SOUTHEASTERN MCCOOK COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS...BEEN CANCELLED. WIND 
GUSTS TO 50 MPH ARE LIKELY IN AREAS NEAR CANISTOTA AND LAKE 
VERMILLION THROUGH 100 AM CDT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4350 9713 4343 9706 4341 9732 4347 9734
      4349 9723
TIME...MOT...LOC 0530Z 269DEG 31KT 4345 9726 

$$

SDC125-060600-
/O.CON.KFSD.TO.W.0016.000000T0000Z-150706T0600Z/
TURNER SD-
1232 AM CDT MON JUL 6 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR
NORTHWESTERN TURNER COUNTY...
    
AT 1230 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A 
TORNADO WAS LOCATED NEAR MARION...OR 7 MILES NORTHWEST OF 
PARKER...MOVING EAST AT 35 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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF 
NORTHWESTERN TURNER COUNTY BETWEEN MONROE AND MARION...PASSING 
TOWARD AREAS NORTH OF PARKER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9713 4343 9706 4341 9732 4347 9734
      4349 9723
TIME...MOT...LOC 0530Z 269DEG 31KT 4345 9726 

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

$$

CHAPMAN

522 
WWUS53 KFSD 060547
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1247 AM CDT MON JUL 6 2015

SDC125-060556-
/O.CAN.KFSD.TO.W.0016.000000T0000Z-150706T0600Z/
TURNER SD-
1247 AM CDT MON JUL 6 2015

...THE TORNADO WARNING FOR NORTHWESTERN TURNER COUNTY IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO. 
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER...GUSTY WINDS 
UP TO 50 MPH ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4350 9713 4343 9706 4341 9732 4347 9734
      4349 9723
TIME...MOT...LOC 0544Z 257DEG 25KT 4343 9700 

$$

CHAPMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 9:02 PM CDT	Flash Flood Watch	FSD	Aurora, Bon Homme, Brookings, Brule, Charles Mix, Clay and 16 more	8 hr
Jul 5, 9:12 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	48 min
Jul 5, 10:00 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	45 min
Jul 5, 11:23 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	37 min
Jul 5, 11:53 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, McCook	37 min
Jul 6, 12:18 AM CDT	Flash Flood Warning	FSD	Aurora, Davison, Hanson, Hutchinson, McCook	3 hr
Jul 6, 12:20 AM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	25 min
Jul 6, 12:54 AM CDT	Tornado Warning	FSD	Minnehaha	23 min
Jul 6, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Union	49 min
Jul 6, 2:15 AM CDT	Flash Flood Warning	FSD	Lake, McCook, Minnehaha, Moody	3 hr
Jul 6, 9:06 AM CDT	River Flood Warning	FSD	Moody	7 days
Jul 6, 9:06 AM CDT	River Flood Warning	FSD	Minnehaha	58 hr
Jul 6, 1:21 PM CDT	River Flood Warning	FSD	Minnehaha	7 days

Nearby

Tornado Warnings in South Dakota, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.