Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 22, 20125 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 22, 2012, 3:07 PM CDT for 5 counties in Minnesota. It was in force for 38 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
Aug 22, 2012, 3:07 PM CDT (20:07 UTC)
Expired
Aug 22, 2012, 3:45 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Isanti County, MN, Mille Lacs County, MN, Morrison County, MN, Sherburne County, MN

The radar

The Minneapolis radar (KMPX), 154 km from the middle of the area, began a volume at 20:09 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2012-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2012-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2248 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
107 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.

728 
WWUS83 KMPX 222007
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
307 PM CDT WED AUG 22 2012

MNZ042>045-049>052-059-222045-
BENTON-ISANTI-KANABEC-MILLE
LACS-MORRISON-SHERBURNE-STEARNS-TODD-WRIGHT-
307 PM CDT WED AUG 22 2012

...THUNDERSTORMS MOVING OVER CENTRAL MINNESOTA...

AT 300 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES SOUTHWEST OF 
STAPLES...TO 3 MILES EAST OF LITTLE FALLS...TO 8 MILES NORTH OF ELK 
RIVER. THESE STORMS WERE MOVING NORTHEAST AT 15 MPH.

SOME TOWNS AFFECTED BY THE STORMS INCLUDE...LITTLE FALLS...CUSHING...
FOLEY...ST CLOUD...PRINCETON AND ZIMMERMAN. 

HAIL UP TO DIME SIZE AND HEAVY DOWNPOURS ARE EXPECTED WITH THESE
STORMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 4631 9455 4634 9443 4630 9435 4627 9433
      4623 9438 4616 9436 4617 9391 4614 9384
      4553 9312 4529 9400 4588 9447 4624 9510
      4636 9472 4636 9466
TIME...MOT...LOC 2005Z 245DEG 14KT 4623 9487 4598 9427
          4546 9355

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 12:07 PM CDTSpecial Weather StatementMPXCarver, McLeod53 min
Aug 22, 1:06 PM CDTSpecial Weather StatementMPXCarver, Hennepin, Scott, Wright54 min
Aug 22, 1:13 PM CDTSevere Thunderstorm WarningMPXMeeker, Wright47 min
Aug 22, 2:01 PM CDTSpecial Weather StatementMPXHennepin, Sherburne59 min
Aug 22, 3:11 PM CDTSpecial Weather StatementMPXAnoka, Dakota, Hennepin, Ramsey, Washington79 min
Aug 22, 3:22 PM CDTSpecial Weather StatementMPXMcLeod, Meeker53 min

Nearby

Special Weather Statements in Minnesota, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.