Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

August 9, 2012Wabasha County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 9, 2012, 1:59 PM CDT for Wabasha County, Minnesota. It was in force for 31 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 9, 2012, 1:59 PM CDT (18:59 UTC)
Expired
Aug 9, 2012, 2:30 PM CDT
In force
31 min
Issued by
NWS Twin Cities, MN

County Wabasha County, MN

The radar

The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 19:01 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, 7.0 hours before the alert went out and 119 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 2012-08-09Temperature 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 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -74 square meters per square second.1939587897Sfc1 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
921 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-74 m²/s²
0-3 km storm-relative helicity
-25 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.

210 
WWUS83 KMPX 091859
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
159 PM CDT THU AUG 9 2012

MNZ078-WIZ024-026-091930-
GOODHUE-PEPIN-PIERCE-
159 PM CDT THU AUG 9 2012

...THUNDERSTORMS MOVING INTO/DEVELOPING OVER GOODHUE...PEPIN AND
PIERCE COUNTIES THROUGH 230 PM CDT...

AT 156 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 4 MILES EAST OF MAIDEN ROCK. THIS STORM WAS MOVING SOUTH
AT 25 MPH.

HAIL UP TO NICKEL SIZE AND WINDS UP TO 30 MPH ARE EXPECTED WITH THIS
STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  MAIDEN ROCK.
  STOCKHOLM.
  PEPIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 4442 9213 4443 9221 4445 9225 4445 9236
      4465 9234 4463 9209 4440 9209 4440 9211
TIME...MOT...LOC 1859Z 003DEG 23KT 4455 9222

$$

CLF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 4:07 PM CDTSpecial Weather StatementMPXGoodhue53 min
Aug 9, 1:34 PM CDTSpecial Weather StatementMPXBarron, Rusk56 min
Aug 9, 3:06 PM CDTSpecial Weather StatementMPXChippewa, Dunn39 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.