Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 8, 20124 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 8, 2012, 3:48 AM CDT for 4 counties in Minnesota. It was in force for 42 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 8, 2012, 3:48 AM CDT (08:48 UTC)
Expired
Aug 8, 2012, 4:30 AM CDT
In force
42 min
Issued by
NWS Twin Cities, MN

Counties Chippewa County, MN, Lac qui Parle County, MN, Redwood County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 154 km from the middle of the area, began a volume at 08:47 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, 8.8 hours before the alert went out and 173 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 2012-08-08Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2012-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 square meters per square second.193958Sfc1 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
2394 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
-37 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.

652 
WWUS83 KMPX 080848
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
348 AM CDT WED AUG 8 2012

MNZ054>057-064-065-073-080930-
CHIPPEWA-KANDIYOHI-LAC QUI PARLE-REDWOOD-RENVILLE-SWIFT-YELLOW
MEDICINE-
348 AM CDT WED AUG 8 2012

...THUNDERSTORMS MOVING OVER CHIPPEWA...KANDIYOHI...LAC QUI PARLE...
REDWOOD...RENVILLE...SWIFT AND YELLOW MEDICINE COUNTIES THROUGH 
430 AM CDT...

AT 348 AM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 6 MILES EAST OF MADISON...OR 10 MILES SOUTHWEST OF
MILAN. THIS STORM WAS MOVING EAST AT 30 MPH.

PEA SIZE HAIL...WINDS UP TO 45 MPH...AND HEAVY DOWNPOURS ARE EXPECTED
WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4522 9622 4520 9612 4527 9613 4526 9504
      4419 9512 4419 9555 4422 9560 4462 9562
      4463 9631
TIME...MOT...LOC 0848Z 291DEG 26KT 4502 9607

$$
DWE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 4:31 PM CDTSpecial Weather StatementMPXSteele44 min
Aug 8, 4:43 PM CDTSevere Thunderstorm WarningMPXFreeborn46 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.