Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 136, NWS Twin Cities, MN

June 10, 2012Le Sueur County, Scott County, Steele County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 2012, 8:29 PM CDT for Le Sueur County, Scott County, Steele County, Minnesota. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 10, 2012, 8:29 PM CDT (01:29 UTC)
Expired: Jun 10, 2012, 9:14 PM CDT
In force: 45 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 65.0 mph

Counties Le Sueur County, MN, Scott County, MN, Steele County, MN

The radar

The Minneapolis radar (KMPX), 48 km from the middle of the area, began a volume at 01:32 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.

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 10, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.5 hours before the alert went out and 48 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: 282 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 2269 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 273 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

039 
WUUS53 KMPX 110129
SVRMPX
MNC079-139-147-110230-
/O.NEW.KMPX.SV.W.0136.120611T0129Z-120611T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
829 PM CDT SUN JUN 10 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  EASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
  EXTREME NORTHWESTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 930 PM CDT

* AT 827 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING DAMAGING WINDS OF 65 MPH. THIS STORM WAS LOCATED NEAR
  KILKENNY...OR ABOUT 16 MILES SOUTHEAST OF LE SUEUR...AND MOVING
  NORTHEAST AT 50 MPH.  NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE
  DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  KILKENNY...
  LE CENTER...
  ST HENRY...
  WATERVILLE...
  ELYSIAN...
  MONTGOMERY...
  NEW PRAGUE...
  NEW MARKET...
  ELKO...
  CREDIT RIVER...
  PRIOR LAKE...
  SAVAGE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4419 9359 4421 9349 4420 9331 4422 9353
      4454 9353 4454 9328 4464 9332 4479 9332
      4479 9339 4449 9367 4450 9376 4436 9380
      4420 9374
TIME...MOT...LOC 0129Z 216DEG 43KT 4438 9359
WIND...HAIL 65MPH 0.88IN

$$

2 follow-up statements

317 
WWUS53 KMPX 110202
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
902 PM CDT SUN JUN 10 2012

MNC079-147-110217-
/O.CAN.KMPX.SV.W.0136.000000T0000Z-120611T0230Z/
LE SUEUR MN-STEELE MN-
902 PM CDT SUN JUN 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR STEELE AND LE SUEUR COUNTIES
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF 
THE WARNED AREA.

LAT...LON 4454 9361 4479 9339 4478 9338 4479 9337
      4479 9332 4463 9332 4454 9328 4454 9353
      4455 9358
TIME...MOT...LOC 0202Z 216DEG 43KT 4470 9326

$$

MNC139-110230-
/O.CON.KMPX.SV.W.0136.000000T0000Z-120611T0230Z/
SCOTT MN-
902 PM CDT SUN JUN 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN SCOTT
COUNTY UNTIL 930 PM CDT...

AT 900 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH.  THIS
STORM WAS LOCATED NEAR LAKEVILLE...OR 20 MILES SOUTH OF
MINNEAPOLIS...MOVING NORTHEAST AT 50 MPH. NICKEL SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4454 9361 4479 9339 4478 9338 4479 9337
      4479 9332 4463 9332 4454 9328 4454 9353
      4455 9358
TIME...MOT...LOC 0202Z 216DEG 43KT 4470 9326
WIND...HAIL 60MPH 0.88IN

$$

031 
WWUS53 KMPX 110214
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
914 PM CDT SUN JUN 10 2012

MNC139-110228-
/O.CAN.KMPX.SV.W.0136.000000T0000Z-120611T0230Z/
SCOTT MN-
914 PM CDT SUN JUN 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SCOTT COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4454 9361 4479 9339 4478 9338 4479 9337
      4479 9332 4463 9332 4454 9328 4454 9353
      4455 9358
TIME...MOT...LOC 0213Z 216DEG 43KT 4480 9315

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 7:07 PM CDT	Special Weather Statement	MPX	Le Sueur, Nicollet, Scott, Sibley	53 min
Jun 10, 7:35 PM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Kanabec, Ramsey	55 min
Jun 10, 7:35 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	40 min
Jun 10, 7:41 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	49 min
Jun 10, 7:54 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Isanti	36 min
Jun 10, 7:55 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet, Scott, Sibley	50 min
Jun 10, 7:59 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Wright	46 min
Jun 10, 8:18 PM CDT	Tornado Warning	MPX	Carver, Le Sueur, Scott, Sibley	42 min
Jun 10, 8:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington	58 min
Jun 10, 8:39 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Sibley	36 min
Jun 10, 8:42 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	63 min
Jun 10, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	36 min
Jun 10, 8:50 PM CDT	Special Weather Statement	MPX	Isanti	40 min
Jun 10, 9:29 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti, Washington	61 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.