Alert archive / Wisconsin / Tornado Warnings in 2008

Tornado Warning 4, NWS La Crosse, WI

May 2, 2008Monroe County, Vernon County, Wisconsin

NWS La Crosse, WI issued this tornado warning at May 2, 2008, 4:10 PM CDT for Monroe County, Vernon County, Wisconsin. It was in force for 23 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
May 2, 2008, 4:10 PM CDT (21:10 UTC)
Expired
May 2, 2008, 4:33 PM CDT
In force
23 min
Issued by
NWS La Crosse, WI
Area
Storm-based polygon

Counties Monroe County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 29 km from the middle of the area, began a volume at 21:11 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.2 hours before the alert went out and 233 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, Green Bay/Straub, WI at 12:00Z on 2008-05-02Temperature 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, Green Bay/Straub, WI at 12:00Z on 2008-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
589 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
148 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.

000 
WFUS53 KARX 022110
TORARX
WIC081-123-022200-
/O.NEW.KARX.TO.W.0004.080502T2110Z-080502T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
410 PM CDT FRI MAY 2 2008

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL VERNON COUNTY IN SOUTHWEST WISCONSIN...
  SOUTHWESTERN MONROE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 500 PM CDT

* AT 407 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR BLOOMINGDALE...OR ABOUT NEAR VIROQUA...MOVING NORTH AT
  24 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WESTBY AND BLOOMINGDALE AROUND 415 PM...
  JERSEY VALLEY COUNTY PARK AROUND 420 PM...
  NEWRY AROUND 425 PM...
  CASHTON AROUND 430 PM...
  PORTLAND AROUND 435 PM...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS

CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR A STURDY BUILDING. AS A
LAST RESORT...LAY FLAT IN A DITCH AND COVER YOUR HEAD.

LAT...LON 4385 9091 4386 9074 4361 9078 4361 9086
TIME...MOT...LOC 2110Z 178DEG 21KT 4363 9082

$$

BINAU
3 follow-up statements
000 
WWUS53 KARX 022122
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
420 PM CDT FRI MAY 2 2008

WIC081-123-022200-
/O.CON.KARX.TO.W.0004.000000T0000Z-080502T2200Z/
MONROE WI-VERNON WI-
420 PM CDT FRI MAY 2 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTH
CENTRAL VERNON AND SOUTHWESTERN MONROE COUNTIES...

AT 416 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE ROTATION ASSOCIATED WITH A THUNDERSTORM. THIS ROTATION WAS 
LOCATED NEAR JERSEY VALLEY COUNTY PARK...OR ABOUT 9 MILES NORTH OF 
VIROQUA...MOVING NORTH AT 24 MPH. THE ROTATION HAD WEAKENED 
CONSIDERABLY IN THE PAST 10 MINUTES...BUT THIS IS STILL A DANGEROUS 
STORM CAPABLE OF A TORNADO.

* THE TORNADO WILL BE NEAR...
  NEWRY AROUND 425 PM...
  CASHTON AND PORTLAND AROUND 430 PM...
 

PLEASE REPORT ANY SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT OFFICE
AND TELL THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4385 9091 4386 9074 4361 9078 4361 9086
TIME...MOT...LOC 2120Z 178DEG 21KT 4370 9082

$$

BINAU
000 
WWUS53 KARX 022129
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
428 PM CDT FRI MAY 2 2008

WIC123-022138-
/O.CAN.KARX.TO.W.0004.000000T0000Z-080502T2200Z/
VERNON WI-
428 PM CDT FRI MAY 2 2008

...THE TORNADO WARNING FOR NORTH CENTRAL VERNON COUNTY IS
CANCELLED...

ROTATION WITH THE THUNDERSTORM WEAKENED CONSIDERABLY AND MOVED OUT 
OF THE COUNTY.

LAT...LON 4373 9080 4373 9088 4375 9089 4384 9091
      4385 9090 4385 9087 4386 9080
TIME...MOT...LOC 2128Z 178DEG 21KT 4375 9082

$$

WIC081-022200-
/O.CON.KARX.TO.W.0004.000000T0000Z-080502T2200Z/
MONROE WI-
428 PM CDT FRI MAY 2 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
SOUTHWESTERN MONROE COUNTY...

AT 425 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SOME ROTATION. THIS ROTATION WAS LOCATED NEAR PORTLAND...OR 
ABOUT 12 MILES NORTH OF VIROQUA...MOVING NORTH AT 24 MPH. THIS STORM 
CONTINUES TO WEAKEN...BUT ROTATION CONTINUES TO BE INDICATED.

* THE POSSIBLE TORNADO WILL BE NEAR...
  HIGHWAY 33 AND COUNTY Y AROUND 435 PM...

PLEASE REPORT ANY SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT OFFICE
AND TELL THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4373 9080 4373 9088 4375 9089 4384 9091
      4385 9090 4385 9087 4386 9080
TIME...MOT...LOC 2128Z 178DEG 21KT 4375 9082

$$

BINAU
000 
WWUS53 KARX 022133
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
432 PM CDT FRI MAY 2 2008

WIC081-022142-
/O.CAN.KARX.TO.W.0004.000000T0000Z-080502T2200Z/
MONROE WI-
432 PM CDT FRI MAY 2 2008

...THE TORNADO WARNING FOR SOUTHWESTERN MONROE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THIS WARNING HAS WEAKENED AND NO LONGER 
APPEARS CAPABLE OF PRODUCING SEVERE WEATHER. ROTATION WEAKENED 
RAPIDLY AS IT MOVED INTO MONROE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA UNTIL 10 PM.

LAT...LON 4373 9080 4373 9088 4375 9089 4384 9091
      4385 9090 4385 9087 4386 9080
TIME...MOT...LOC 2132Z 178DEG 21KT 4377 9082

$$

BINAU

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 5:04 PM CDTSevere Thunderstorm WarningARXGrant41 min

Nearby

Tornado Warnings in Wisconsin, 2008Every tornado warning in 2008Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.