Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 138, NWS Twin Cities, MN

June 10, 2012Carver County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 2012, 8:39 PM CDT for Carver County, Sibley County, Minnesota. It was in force for 36 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, 8:39 PM CDT (01:39 UTC)
Expired: Jun 10, 2012, 9:15 PM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Carver County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 29 km from the middle of the area, began a volume at 01:41 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, 1.7 hours before the alert went out and 27 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.

083 
WUUS53 KMPX 110139
SVRMPX
MNC019-143-110215-
/O.NEW.KMPX.SV.W.0138.120611T0139Z-120611T0215Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...

* UNTIL 915 PM CDT

* AT 837 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
  WEST OF BELLE PLAINE...OR ABOUT 11 MILES NORTH OF LE SUEUR...AND
  MOVING NORTHEAST AT 50 MPH.  NICKEL SIZE HAIL MAY ALSO ACCOMPANY
  THESE DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  GREEN ISLE...
  ARLINGTON...
  HAMBURG...
  NORWOOD/YOUNG AMERICA...
  COLOGNE...
  MAYER...
  WACONIA...
  VICTORIA...
  WATERTOWN...

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 4454 9392 4461 9410 4472 9403 4474 9401
      4476 9401 4498 9386 4497 9378 4489 9376
      4489 9362 4460 9387 4459 9389
TIME...MOT...LOC 0139Z 214DEG 41KT 4464 9387
WIND...HAIL 60MPH 0.88IN

$$

1 follow-up statement

908 
WWUS53 KMPX 110207
SVSMPX

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

MNC019-143-110222-
/O.EXP.KMPX.SV.W.0138.000000T0000Z-120611T0215Z/
CARVER MN-SIBLEY MN-
907 PM CDT SUN JUN 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SIBLEY AND CARVER
COUNTIES WILL EXPIRE AT 915 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4454 9392 4461 9410 4472 9403 4474 9401
      4476 9401 4498 9386 4497 9378 4489 9376
      4489 9362 4460 9387 4459 9389
TIME...MOT...LOC 0207Z 214DEG 41KT 4490 9362

$$

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, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Steele	45 min
Jun 10, 8:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington	58 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.