Alert archive / South Dakota / Tornado Warnings in 2012

Tornado Warning 12, NWS Aberdeen, SD

June 17, 2012Big Stone County, Minnesota; Grant County, Roberts County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jun 17, 2012, 7:48 PM CDT for Big Stone County, Minnesota; Grant County, Roberts County, South Dakota. It was in force for 27 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: Jun 17, 2012, 7:48 PM CDT (00:48 UTC)
Expired: Jun 17, 2012, 8:15 PM CDT
In force: 27 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon

Counties Big Stone County, MN, Grant County, SD, Roberts County, SD

The radar

The Aberdeen radar (KABR), 166 km from the middle of the area, began a volume at 00:49 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, 7:50 PM CDT	TSTM WND DMG	2 Ne Big Stone City, MN	CRAMERS RESORT - POWER LINES DOWN... TREES DOWN... GARAGE DAMAGED
Jun 17, 8:00 PM CDT	TSTM WND DMG	8 E Ortonville, MN	12 -15 POWER POLES SNAPPED

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, 3:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.8 hours before the alert went out and 169 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: 985 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 1934 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

860 
WFUS53 KABR 180048
TORABR
MNC011-SDC051-109-180115-
/O.NEW.KABR.TO.W.0012.120618T0048Z-120618T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
748 PM CDT SUN JUN 17 2012

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BIG STONE COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHEASTERN GRANT COUNTY IN NORTHEAST SOUTH DAKOTA...
  EXTREME SOUTHEASTERN ROBERTS COUNTY IN NORTHEAST SOUTH DAKOTA...

* UNTIL 815 PM CDT

* AT 745 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR ORTONVILLE...AND MOVING EAST AT 40 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  CORRELL AROUND 805 PM CDT...

THIS WARNING INCLUDES HIGHWAY 12 BETWEEN MILE MARKERS 395 AND 399.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4519 9618 4521 9622 4522 9628 4525 9632
      4525 9641 4526 9644 4523 9645 4524 9654
      4542 9648 4537 9611 4519 9610
TIME...MOT...LOC 0049Z 284DEG 35KT 4531 9636

$$
FOWLE

2 follow-up statements

071 
WWUS53 KABR 180058
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
758 PM CDT SUN JUN 17 2012

MNC011-SDC051-109-180115-
/O.CON.KABR.TO.W.0012.000000T0000Z-120618T0115Z/
BIG STONE MN-ROBERTS SD-GRANT SD-
758 PM CDT SUN JUN 17 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN GRANT...
EXTREME SOUTHEASTERN ROBERTS AND SOUTHEASTERN BIG STONE COUNTIES
UNTIL 815 PM CDT...

AT 754 PM CDT...THE PUBLIC REPORTED A TORNADO.  THIS TORNADO WAS
LOCATED NEAR ODESSA...OR 8 MILES EAST OF ORTONVILLE...MOVING EAST AT
40 MPH.

SIGNIFICANT DAMAGE HAS BEEN REPORTED ON BIG STONE LAKE AND IN THE 
TOWN OR ORTONVILLE. 

THE TORNADO WILL BE NEAR...
  CORRELL AROUND 805 PM CDT...

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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR WEST CENTRAL MINNESOTA AND NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4519 9618 4521 9622 4522 9628 4525 9632
      4525 9641 4526 9644 4523 9645 4524 9653
      4527 9653 4542 9648 4537 9611 4519 9610
TIME...MOT...LOC 0058Z 284DEG 35KT 4526 9624

$$
FOWLE

776 
WWUS53 KABR 180113
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
813 PM CDT SUN JUN 17 2012

MNC011-SDC051-109-180123-
/O.EXP.KABR.TO.W.0012.000000T0000Z-120618T0115Z/
BIG STONE MN-ROBERTS SD-GRANT SD-
813 PM CDT SUN JUN 17 2012

...THE TORNADO WARNING FOR NORTHEASTERN GRANT...EXTREME SOUTHEASTERN
ROBERTS AND SOUTHEASTERN BIG STONE COUNTIES WILL EXPIRE AT 815 PM
CDT/715 PM MDT/...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR THE AREA.  GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH 
THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR WEST CENTRAL MINNESOTA AND NORTHEASTERN SOUTH DAKOTA.

LAT...LON 4519 9618 4521 9622 4522 9628 4525 9632
      4525 9641 4526 9644 4523 9645 4524 9653
      4527 9653 4542 9648 4537 9611 4519 9610
TIME...MOT...LOC 0113Z 284DEG 35KT 4522 9604

$$
MF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:02 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	43 min
Jun 17, 7:18 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone, Traverse	27 min
Jun 17, 7:25 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	50 min
Jun 17, 8:11 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	58 min
Jun 17, 7:24 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin	51 min
Jun 17, 8:05 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin	40 min
Jun 17, 8:11 PM CDT	Tornado Warning	ABR	Codington, Deuel, Hamlin	34 min
Jun 17, 8:45 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant	30 min

Nearby

Tornado Warnings in South Dakota, 2012 Tornado Warnings in Minnesota, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.