Alert archive / South Dakota / Tornado Warnings in 2006

Tornado Warning 35, NWS Sioux Falls, SD

September 16, 2006McCook County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Sep 16, 2006, 6:12 PM CDT for McCook County, South Dakota. It was in force for 33 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: Sep 16, 2006, 6:12 PM CDT (23:12 UTC)
Expired: Sep 16, 2006, 6:45 PM CDT
In force: 33 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

County McCook County, SD

The radar

The Sioux Falls radar (KFSD), 58 km from the middle of the area, began a volume at 23:14 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
Sep 16, 6:20 PM CDT	HAIL 1	5 Ne Salem, SD
Sep 16, 6:28 PM CDT	HAIL 1	8 N Montrose, 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
Sep 16, 1:53 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.2 hours before the alert went out and 153 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: 561 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 481 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 92 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 162312
TORFSD
SDC087-162345-
/O.NEW.KFSD.TO.W.0035.060916T2312Z-060916T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
612 PM CDT SAT SEP 16 2006

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  MCCOOK COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 645 PM CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  SOUTHWEST OF SALEM...OR ABOUT 25 MILES NORTHWEST OF PARKER...MOVING
  NORTHEAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
   MONTROSE AROUND 620 PM CDT...

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE WARNED AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR NORTHEAST NEBRASKA AND SOUTHEASTERN SOUTH DAKOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR NORTHWEST
IOWA AND SOUTHWEST MINNESOTA.

LAT...LON 4369 9762 4353 9760 4360 9713 4384 9713
      4385 9736 4379 9754

$$

BT

3 follow-up statements

000 
WWUS53 KFSD 162318
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
617 PM CDT SAT SEP 16 2006

SDC087-162345-
/O.CON.KFSD.TO.W.0035.000000T0000Z-060916T2345Z/
MCCOOK SD-
617 PM CDT SAT SEP 16 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR MCCOOK
COUNTY...

AT 617 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 4 MILES SOUTHEAST OF
SALEM...OR ABOUT 22 MILES NORTHWEST OF PARKER...MOVING NORTHEAST AT
55 MPH.

NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO INDICATE STRONG 
ROTATION WITH THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING 
FOR NORTHEAST NEBRASKA AND SOUTHEASTERN SOUTH DAKOTA.

LAT...LON 4369 9762 4353 9760 4360 9713 4384 9713
      4385 9736 4379 9754

$$
BT

000 
WWUS53 KFSD 162333
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
632 PM CDT SAT SEP 16 2006

SDC087-162345-
/O.CON.KFSD.TO.W.0035.000000T0000Z-060916T2345Z/
MCCOOK SD-
632 PM CDT SAT SEP 16 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR MCCOOK
COUNTY...

AT 632 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES NORTH OF
MONTROSE...OR ABOUT 16 MILES SOUTH OF MADISON...MOVING NORTHEAST AT
55 MPH.

AT 620 PM...TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZED HAIL 5 
MILES NORTHEAST OF SALEM.  

ROTATION DETECTED BY THE RADAR HAS DECREASED RECENTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING 
FOR NORTHEAST NEBRASKA AND SOUTHEASTERN SOUTH DAKOTA. 

LAT...LON 4369 9762 4353 9760 4360 9713 4384 9713
      4385 9736 4379 9754

$$
BT

000 
WWUS53 KFSD 162339
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
640 PM CDT SAT SEP 16 2006

SDC087-162350-
/O.EXP.KFSD.TO.W.0035.000000T0000Z-060916T2345Z/
MCCOOK SD-
640 PM CDT SAT SEP 16 2006

...THE TORNADO WARNING FOR MCCOOK COUNTY EXPIRES AT 645 PM CDT...

THE STORM HAS EXITED THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR NORTHEAST NEBRASKA AND SOUTHEASTERN SOUTH DAKOTA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR NORTHWEST
IOWA AND SOUTHWEST MINNESOTA.

LAT...LON 4369 9762 4353 9760 4360 9713 4384 9713
      4385 9736 4379 9754

$$
BT

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 8:35 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Yankton	25 min
Sep 15, 10:51 PM CDT	Flash Flood Warning	FSD	Yankton	114 min
Sep 16, 1:37 AM CDT	Flash Flood Warning	FSD	Yankton	83 min
Sep 16, 4:35 AM CDT	Wind Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	13 hr
Sep 16, 3:03 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	27 min
Sep 16, 3:31 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson	44 min
Sep 16, 3:46 PM CDT	Tornado Warning	FSD	Hanson, McCook	29 min
Sep 16, 4:12 PM CDT	Tornado Warning	FSD	McCook, Minnehaha	48 min
Sep 16, 4:32 PM CDT	Tornado Warning	FSD	Lake, Moody	43 min
Sep 16, 4:40 PM CDT	Severe Thunderstorm Warning	FSD	Brule	35 min
Sep 16, 4:48 PM CDT	Tornado Warning	FSD	Brookings	42 min
Sep 16, 4:52 PM CDT	Tornado Warning	FSD	Charles Mix, Gregory	38 min
Sep 16, 5:08 PM CDT	Severe Thunderstorm Warning	FSD	McCook	37 min
Sep 16, 5:15 PM CDT	Tornado Warning	FSD	Aurora, Brule, Jerauld	45 min
Sep 16, 5:18 PM CDT	Tornado Warning	FSD	Moody	42 min
Sep 16, 5:23 PM CDT	Tornado Warning	FSD	Charles Mix, Douglas	37 min
Sep 16, 5:33 PM CDT	Tornado Warning	FSD	Hutchinson	28 min
Sep 16, 5:37 PM CDT	Severe Thunderstorm Warning	FSD	Lake	26 min
Sep 16, 5:44 PM CDT	Tornado Warning	FSD	Sanborn	31 min
Sep 16, 5:49 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	56 min
Sep 16, 5:52 PM CDT	Severe Thunderstorm Warning	FSD	Moody	23 min
Sep 16, 6:08 PM CDT	Tornado Warning	FSD	Moody	37 min
Sep 16, 6:10 PM CDT	Tornado Warning	FSD	Beadle, Kingsbury	50 min
Sep 16, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Lake	33 min
Sep 16, 6:58 PM CDT	Tornado Warning	FSD	Kingsbury	17 min

Nearby

Tornado Warnings in South Dakota, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.