Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 3, 20126 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 3, 2012, 11:01 PM CDT for 6 counties in Minnesota. It was in force for 44 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 3, 2012, 11:01 PM CDT (04:01 UTC)
Expired
Aug 3, 2012, 11:45 PM CDT
In force
44 min
Issued by
NWS Twin Cities, MN

Counties Blue Earth County, MN, Faribault County, MN, Freeborn County, MN, Martin County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 102 km from the middle of the area, began a volume at 04:02 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 00:00Z, 4.0 hours before the alert went out and 102 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 00:00Z on 2012-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 576 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2012-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
576 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1840 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
257 m²/s²
Significant tornado parameter
0.1
Supercell composite
7.5

Open this sounding in Storm Lab

The text

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

192 
WWUS83 KMPX 040401
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1101 PM CDT FRI AUG 3 2012

MNZ076>078-082>085-091>093-040445-
BLUE EARTH-FARIBAULT-FREEBORN-GOODHUE-LE
SUEUR-MARTIN-RICE-STEELE-WASECA-WATONWAN-
1101 PM CDT FRI AUG 3 2012

...THUNDERSTORMS MOVING INTO/DEVELOPING OVER BLUE EARTH...
FARIBAULT...FREEBORN...GOODHUE...LE SUEUR...MARTIN...RICE...STEELE...
WASECA AND WATONWAN COUNTIES THROUGH 1145 PM CDT...

AT 1058 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF
KILKENNY TO 3 MILES NORTHEAST OF JANESVILLE TO 3 MILES EAST OF
MAPLETON TO 5 MILES SOUTHWEST OF WINNEBAGO. THESE STORMS WERE MOVING
EAST AT 40 MPH.

WINDS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  JANESVILLE.
  ALBERT LEA.
  FAIRMONT.
  MAPLETON.
  WASECA.
  WELLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 4350 9486 4387 9486 4415 9397 4429 9383
      4430 9285 4419 9283 4419 9304 4349 9305
TIME...MOT...LOC 0401Z 262DEG 35KT 4428 9356 4416 9364
          4392 9385 4372 9419

$$
SPD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:14 PM CDTSpecial Weather StatementMPXChippewa, Lac qui Parle, Swift, Yellow Medicine46 min
Aug 3, 7:37 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine53 min
Aug 3, 8:20 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Renville, Swift, Yellow Medicine55 min
Aug 3, 8:26 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope, Stevens49 min
Aug 3, 9:01 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood, Renville, Yellow Medicine59 min
Aug 3, 9:07 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Meeker, Pope, Renville, Stearns and 2 more53 min
Aug 3, 9:47 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, McLeod, Nicollet, Redwood, Renville and 1 more58 min
Aug 3, 9:52 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Renville, Sherburne, Stearns, Wright38 min
Aug 3, 10:25 PM CDTSpecial Weather StatementMPXAnoka, Carver, Hennepin, McLeod, Sherburne, Wright65 min
Aug 3, 10:29 PM CDTSpecial Weather StatementMPXLe Sueur, Nicollet, Rice, Scott61 min
Aug 3, 10:39 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin36 min
Aug 3, 10:44 PM CDTSevere Thunderstorm WarningMPXAnoka, Benton, Isanti, Mille Lacs, Sherburne, Wright46 min
Aug 3, 10:54 PM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Hennepin, Sherburne, Wright25 min
Aug 3, 11:06 PM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Chisago, Dakota, Hennepin, Ramsey and 2 more39 min
Aug 3, 11:12 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Isanti33 min
Aug 3, 11:18 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice, Scott, Washington42 min
Aug 3, 11:38 PM CDTSevere Thunderstorm WarningMPXChisago, Washington67 min
Aug 3, 11:44 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Washington61 min
Aug 4, 12:19 AM CDTSpecial Weather StatementMPXBrown26 min
Aug 4, 1:13 AM CDTSpecial Weather StatementMPXMartin47 min
Aug 4, 1:25 AM CDTSevere Thunderstorm WarningMPXFaribault, Martin65 min
Aug 4, 4:28 AM CDTSpecial Weather StatementMPXFaribault47 min
Aug 4, 12:43 AM CDTSpecial Weather StatementMPXBarron, Chippewa, Dunn, Eau Claire, Pepin, Rusk62 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.