Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 283, NWS Twin Cities, MN

August 13, 2008Pierce County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 13, 2008, 3:38 PM CDT for Pierce County, Wisconsin. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 13, 2008, 3:38 PM CDT (20:38 UTC)
Expired: Aug 13, 2008, 4:11 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

County Pierce County, WI

The radar

The Minneapolis radar (KMPX), 86 km from the middle of the area, began a volume at 20:40 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.

What was reported inside it

Time	Report	Where	Remark
Aug 13, 3:41 PM CDT	HAIL 1	8 W Ellsworth, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.6 hours before the alert went out and 89 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: 178 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1447 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: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 132038
SVRMPX
WIC093-132130-
/O.NEW.KMPX.SV.W.0283.080813T2038Z-080813T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
338 PM CDT WED AUG 13 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN AND CENTRAL PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 430 PM CDT

* AT 336 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
  THIS STORM WAS LOCATED 5 MILES NORTH OF DIAMOND BLUFF...OR ABOUT
  7 MILES WEST OF ELLSWORTH...AND MOVING EAST AT 20 MPH.

* SOME LOCATIONS INCLUDE...
  HAGER CITY...
  ELLSWORTH...
  BAY CITY...
  MAIDEN ROCK...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

LAT...LON 4456 9230 4458 9254 4459 9255 4463 9264
      4464 9264 4471 9273 4480 9269 4477 9220
TIME...MOT...LOC 2038Z 279DEG 17KT 4473 9262

$$

TDK

2 follow-up statements

000 
WWUS53 KMPX 132053
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
353 PM CDT WED AUG 13 2008

WIC093-132130-
/O.CON.KMPX.SV.W.0283.000000T0000Z-080813T2130Z/
PIERCE WI-
352 PM CDT WED AUG 13 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT 
FOR CENTRAL AND SOUTHERN PIERCE COUNTY...

AT 341 PM CDT...ONE INCH SIZE HAIL WAS REPORTED 8 MILES WEST OF 
ELLSWORTH.

AT 348 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
OF 60 MPH.  THE SEVERE STORM WAS LOCATED 4 MILES NORTHEAST OF DIAMOND
BLUFF...AND MOVING EAST TO SOUTHEAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE HAGER CITY...ESDAILE...DIAMOND
BLUFF...MAIDEN ROCK...ELLSWORTH AND BAY CITY.  

PREPARE IMMEDIATELY FOR DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER 
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.  VERY 
HEAVY RAIN WILL ALSO OCCUR.

LAT...LON 4456 9230 4457 9241 4458 9242 4458 9253
      4459 9254 4463 9264 4469 9269 4476 9264
      4477 9220
TIME...MOT...LOC 2052Z 279DEG 17KT 4469 9254

$$

TDK

000 
WWUS53 KMPX 132111
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
411 PM CDT WED AUG 13 2008

WIC093-132125-
/O.CAN.KMPX.SV.W.0283.000000T0000Z-080813T2130Z/
PIERCE WI-
408 PM CDT WED AUG 13 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL AND SOUTHERN PIERCE 
COUNTY IS CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED SIGNIFICANTLY 
JUST NORTH OF THE RED WING AIRPORT. THEREFORE...THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.  THE STORM WAS MOVING 
SOUTHEAST TOWARD MAIDEN ROCK AND BAY CITY...WHERE BRIEF GUSTY WINDS 
AND LIGHTNING STRIKES ARE STILL POSSIBLE. BOATERS BETWEEN HAGER CITY 
AND MAIDEN ROCK SHOULD HEAD FOR SHORE. 

ONE INCH HAIL DID FALL AT 341 PM 8 MILES WEST OF ELLSWORTH.


LAT...LON 4456 9230 4457 9241 4458 9242 4458 9253
      4459 9254 4464 9263 4469 9269 4476 9264
      4477 9220
TIME...MOT...LOC 2108Z 298DEG 15KT 4462 9250

$$

TDK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 3:37 AM CDT	Dense Fog Advisory	MPX	Barron, Dunn, Pepin, Pierce, Polk, Saint Croix	5 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2008 Every severe thunderstorm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.