Alert archive / Wisconsin / Special Weather Statements in 2013

Special Weather Statement, NWS Twin Cities, MN

August 29, 2013Polk County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Aug 29, 2013, 11:35 PM CDT for Polk County, Wisconsin. It was in force for 40 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 29, 2013, 11:35 PM CDT (04:35 UTC)
Expired: Aug 30, 2013, 12:15 AM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN

County Polk County, WI

The radar

The Minneapolis radar (KMPX), 125 km from the middle of the area, began a volume at 04:34 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, 4.6 hours before the alert went out and 127 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 908 J/kg
Mixed-layer CIN: -219 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Aug 29, 10:31 PM CDT, 1 hour 4 minutes earlier.

Area forecast discussion, Aug 29, 10:31 PM CDT, 1 hour 4 minutes before

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Hazardous weather outlook, Aug 29, 10:59 PM CDT, 36 minutes before

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In the hours before

Special weather statement, Aug 29, 7:49 PM CDT, 3 hours 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
749 PM CDT THU AUG 29 2013

WIZ016-300130-
RUSK-
749 PM CDT THU AUG 29 2013

...THUNDERSTORMS DEVELOPING OVER RUSK COUNTY THROUGH 830 PM CDT...

AT 746 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 11 MILES NORTHWEST OF LADYSMITH...OR 16 MILES SOUTHEAST
OF EDGEWATER. THIS STORM WAS MOVING EAST AT 30 MPH.

HAIL UP TO DIME SIZE...WINDS UP TO 50 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  BRUCE.
  LADYSMITH.
  CONRATH.
  RUSK COUNTY AP.
  GLEN FLORA.
  INGRAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4539 9069 4537 9154 4564 9155 4564 9068
TIME...MOT...LOC 0049Z 262DEG 26KT 4557 9124

Special weather statement, Aug 29, 11:35 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:49 PM CDT	Special Weather Statement	MPX	Rusk	41 min
Aug 29, 8:10 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	50 min

Nearby

Special Weather Statements in Wisconsin, 2013 Every special weather statement in 2013

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.