Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 8, 2012Steele County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 8, 2012, 4:31 PM CDT for Steele County, Minnesota. It was in force for 44 min. 3 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: Aug 8, 2012, 4:31 PM CDT (21:31 UTC)
Expired: Aug 8, 2012, 5:15 PM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN

County Steele County, MN

What was reported inside it

Time	Report	Where	Remark
Aug 8, 4:55 PM CDT	TSTM WND DMG	3 Ssw Glenville, MN	TREE DOWN IN FRONT YARD.
Aug 8, 4:55 PM CDT	HAIL 0.75	3 Ssw Glenville, MN	HAILED FOR FIVE MINUTES.
Aug 8, 5:05 PM CDT	TSTM WND GST 57	10 S Albert Lea, MN	MEASURED BY MNDOT ROAD WEATHER STATION ALONG INTERSTATE 35 AND JUST NORTH OF THE STATE LINE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.5 hours before the alert went out and 122 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1632 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 150 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.

482 
WWUS83 KMPX 082131
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
431 PM CDT WED AUG 8 2012

MNZ085-093-082215-
FREEBORN-STEELE-
431 PM CDT WED AUG 8 2012

...STRONG THUNDERSTORMS DEVELOPING OVER FREEBORN AND STEELE COUNTIES 
THROUGH 515 PM CDT...

AT 428 PM CDT...RADAR INDICATED THAT SEVERAL CLUSTERS OF 
THUNDERSTORMS WERE RAPIDLY DEVELOPING ALONG A LINE EXTENDING FROM 
MEDFORD TO 3 MILES SOUTHEAST OF BLOOMING PRAIRIE TO 4 MILES 
SOUTHWEST OF GLENVILLE. THESE STORMS WERE MOVING EAST AT 10 MPH.

HAIL UP TO DIME SIZE...WINDS UP TO 30 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND HEAVY DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BLOOMING PRAIRIE.
  BIXBY.
  MERTON.
  MOLAND.
  LONDON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 4381 9325 4419 9340 4420 9304 4351 9304
      4349 9318 4350 9347
TIME...MOT...LOC 2131Z 257DEG 10KT 4417 9321 4384 9301
          4353 9332

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 3:48 AM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Redwood, Yellow Medicine	42 min
Aug 8, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	46 min

Nearby

Special Weather Statements in Minnesota, 2012 Every special weather statement 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.