Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 91, NWS La Crosse, WI

August 23, 2011Clark County, Taylor County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 23, 2011, 3:57 PM CDT for Clark County, Taylor County, Wisconsin. It was in force for 63 min. 3 reports 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 23, 2011, 3:57 PM CDT (20:57 UTC)
Expired: Aug 23, 2011, 5:00 PM CDT
In force: 63 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Clark County, WI, Taylor County, WI

The radar

The La Crosse radar (KARX), 133 km from the middle of the area, began a volume at 20:58 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
Aug 23, 4:00 PM CDT	HAIL 1	8 N Stanley, WI
Aug 23, 4:24 PM CDT	HAIL 1.75	Thorp, WI
Aug 23, 4:44 PM CDT	HAIL 1	3 S Thorp, WI

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

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.0 hours before the alert went out and 201 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: 45 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

570 
WUUS53 KARX 232057
SVRARX
WIC019-119-232200-
/O.NEW.KARX.SV.W.0091.110823T2057Z-110823T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
357 PM CDT TUE AUG 23 2011

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CLARK COUNTY IN CENTRAL WISCONSIN...
  SOUTHWESTERN TAYLOR COUNTY IN NORTH CENTRAL WISCONSIN...

* UNTIL 500 PM CDT

* AT 353 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED NEAR COUNTY ROADS F AND H...OR 23 MILES
  NORTHEAST OF CHIPPEWA FALLS...MOVING SOUTHEAST AT 35 MPH. THIS
  STORM CAN PRODUCE LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JUNCTION AROUND 410 PM...
  EIDSVOLD AND LUBLIN AROUND 415 PM...
  THORP AND COUNTY O AND STERLING AVENUE AROUND 420 PM...  
  RESEBURG AROUND 425 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4493 9030 4491 9031 4469 9058 4493 9093
      4519 9093
TIME...MOT...LOC 2057Z 311DEG 31KT 4511 9097
WIND...HAIL 60MPH 1.75IN

$$

BOYNE

5 follow-up statements

243 
WWUS53 KARX 232106
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
406 PM CDT TUE AUG 23 2011

WIC019-119-232200-
/O.CON.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
CLARK WI-TAYLOR WI-
406 PM CDT TUE AUG 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TAYLOR AND NORTHERN CLARK COUNTIES UNTIL 500 PM CDT...

AT 340 PM...THE PUBLIC REPORTED NICKLE SIZE HAIL IN HOLCOMBE 
WISCONSIN WITH THIS SEVERE THUNDERSTORM.

AT 403 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR COUNTY ROADS F AND H...OR 25 MILES
NORTHEAST OF CHIPPEWA FALLS...MOVING SOUTHEAST AT 35 MPH. THIS STORM
CAN PRODUCE LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING
WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EIDSVOLD AND LUBLIN AROUND 415 PM...
  THORP AND COUNTY O AND STERLING AVENUE AROUND 420 PM...
  RESEBURG AROUND 425 PM...
  WITHEE AROUND 430 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4493 9030 4491 9031 4469 9058 4493 9093
      4519 9093
TIME...MOT...LOC 2105Z 311DEG 31KT 4506 9090
WIND...HAIL 60MPH 1.75IN

$$

BOYNE

981 
WWUS53 KARX 232116
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
416 PM CDT TUE AUG 23 2011

WIC019-119-232200-
/O.CON.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
CLARK WI-TAYLOR WI-
416 PM CDT TUE AUG 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TAYLOR AND NORTHERN CLARK COUNTIES UNTIL 500 PM CDT...

AT 400 PM CDT...SPOTTERS REPORTED QUARTER SIZE HAIL ON THE CHIPPEWA 
AND TAYLOR COUNTY LINE NORTH OF STANLEY.

AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM LOCATED NEAR JUNCTION...OR 26 MILES WEST OF 
MEDFORD...MOVING SOUTHEAST AT 40 MPH. THIS STORM CAN PRODUCE LARGE 
DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING WINDS IN EXCESS OF 
60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  THORP AROUND 415 PM...
  RESEBURG AROUND 420 PM...  
  OWEN AND WITHEE AROUND 430 PM... 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4493 9030 4491 9031 4469 9058 4493 9093
      4519 9093
TIME...MOT...LOC 2112Z 312DEG 34KT 4502 9082
WIND...HAIL 60MPH 1.75IN

$$

BOYNE

787 
WWUS53 KARX 232126
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
426 PM CDT TUE AUG 23 2011

WIC019-119-232200-
/O.CON.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
CLARK WI-TAYLOR WI-
426 PM CDT TUE AUG 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TAYLOR AND NORTHERN CLARK COUNTIES UNTIL 500 PM CDT...

AT 424 PM CDT...SPOTTERS REPORTED QUARTER TO GOLF BALL SIZE HAIL IN
THORP.

AT 425 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED NEAR COUNTY O AND STERLING AVENUE...OR 22
MILES SOUTHWEST OF MEDFORD...MOVING SOUTHEAST AT 40 MPH. THIS STORM
CAN PRODUCE LARGE DAMAGING HAIL UP TO GOLF BALL SIZE AND DAMAGING
WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OWEN AND STERLING AVENUE AND STARKS ROAD AROUND 430 PM...
  LONGWOOD AROUND 435 PM...
  GREENWOOD AND ATWOOD AROUND 440 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4493 9030 4491 9031 4469 9058 4493 9093
      4519 9093
TIME...MOT...LOC 2125Z 312DEG 34KT 4493 9069
WIND...HAIL 60MPH 1.75IN

$$

BOYNE

889 
WWUS53 KARX 232134
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
434 PM CDT TUE AUG 23 2011

WIC019-119-232200-
/O.CON.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
CLARK WI-TAYLOR WI-
434 PM CDT TUE AUG 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TAYLOR AND NORTHERN CLARK COUNTIES UNTIL 500 PM CDT...

AT 424 PM CDT...SPOTTERS REPORTED QUARTER TO GOLF BALL SIZE HAIL IN 
THORP.

AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR LONGWOOD...OR 22 MILES SOUTHWEST
OF MEDFORD...MOVING SOUTHEAST AT 40 MPH. THIS STORM CAN PRODUCE LARGE
DAMAGING HAIL UP TO TENNIS BALL SIZE AND DAMAGING WINDS IN EXCESS OF
60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GREENWOOD AND ATWOOD AROUND 440 PM...
  COUNTY K AND CAPITAL ROAD AND HIGHWAY 73 AND 98 AROUND 445 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4493 9030 4491 9031 4469 9058 4493 9093
      4519 9093
TIME...MOT...LOC 2134Z 312DEG 34KT 4487 9060
WIND...HAIL 60MPH 2.50IN

$$

BOYNE

759 
WWUS53 KARX 232139
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
439 PM CDT TUE AUG 23 2011

WIC119-232148-
/O.CAN.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
TAYLOR WI-
439 PM CDT TUE AUG 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TAYLOR COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED SOUTHEAST INTO CLARK 
COUNTY.

LAT...LON 4487 9083 4503 9056 4493 9030 4491 9031
      4469 9058
TIME...MOT...LOC 2138Z 312DEG 34KT 4485 9056

$$

WIC019-232200-
/O.CON.KARX.SV.W.0091.000000T0000Z-110823T2200Z/
CLARK WI-
439 PM CDT TUE AUG 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN CLARK
COUNTY UNTIL 500 PM CDT...

AT 424 PM CDT...SPOTTERS REPORTED QUARTER TO GOLF BALL SIZE HAIL IN 
THORP.

AT 435 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR LONGWOOD...OR 21 MILES NORTH OF
NEILLSVILLE...MOVING SOUTHEAST AT 40 MPH. THIS STORM CAN PRODUCE
LARGE DAMAGING HAIL UP TO TENNIS BALL SIZE AND DAMAGING WINDS IN
EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COUNTY K AND CAPITAL ROAD AND HIGHWAY 73 AND 98 AROUND 445 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE ROOFS...WINDOWS...SIDING AND VEHICLES. DAMAGING
WINDS ARE ALSO EXPECTED...WHICH WILL UPROOT TREES AND DOWN POWER
LINES. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4487 9083 4503 9056 4493 9030 4491 9031
      4469 9058
TIME...MOT...LOC 2138Z 312DEG 34KT 4485 9056
WIND...HAIL 60MPH 2.50IN

$$

BOYNE

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 4:43 PM CDT	Severe Thunderstorm Warning	ARX	Clark	32 min
Aug 23, 4:54 PM CDT	Severe Thunderstorm Warning	ARX	Clark	66 min
Aug 23, 5:18 PM CDT	Tornado Warning	ARX	Clark	16 min
Aug 23, 5:47 PM CDT	Tornado Warning	ARX	Clark, Jackson	35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.