Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 23, 2012Pope County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 23, 2012, 2:49 PM CDT for Pope County, Minnesota. It was in force for 41 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 23, 2012, 2:49 PM CDT (19:49 UTC)
Expired
Aug 23, 2012, 3:30 PM CDT
In force
41 min
Issued by
NWS Twin Cities, MN

County Pope County, MN

The radar

The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 19:50 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, 7.8 hours before the alert went out and 145 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 2012-08-23Temperature 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 2012-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
2118 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
158 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.

458 
WWUS83 KMPX 231949
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
249 PM CDT THU AUG 23 2012

MNZ041-042-048-049-055-057-232030-
DOUGLAS-KANDIYOHI-POPE-STEARNS-SWIFT-TODD-
249 PM CDT THU AUG 23 2012

...THUNDERSTORMS MOVING WEST CENTRAL AND CENTRAL MINNESOTA...

AT 246 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 16 MILES SOUTH OF GLENWOOD...OR 27 MILES SOUTHWEST OF
SAUK CENTRE. THIS STORM WAS MOVING NORTHEAST AT 25 MPH.

HAIL UP TO DIME SIZE...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  GILCHRIST.
  SEDAN.
  BROOTEN.
  NEW LONDON.
  PADUA.
  ELROSA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4576 9530 4578 9475 4528 9476 4531 9535
      4548 9546
TIME...MOT...LOC 1949Z 245DEG 20KT 4543 9528

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 11:16 AM CDTSpecial Weather StatementMPXSwift29 min
Aug 23, 11:30 AM CDTSpecial Weather StatementMPXSwift45 min
Aug 23, 12:30 PM CDTSpecial Weather StatementMPXPope, Stevens, Swift60 min
Aug 23, 1:07 PM CDTSevere Thunderstorm WarningMPXPope, Stevens53 min
Aug 23, 2:50 PM CDTAreal Flood AdvisoryMPXPope, Stevens, Swift3 hr
Aug 23, 5:03 PM CDTSpecial Weather StatementMPXWright27 min
Aug 23, 6:06 PM CDTSevere Thunderstorm WarningMPXRedwood54 min
Aug 23, 6:31 PM CDTSpecial Weather StatementMPXIsanti, Kanabec, Mille Lacs44 min
Aug 23, 6:46 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs44 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.