Alert archive / Wisconsin / Tornado Warnings in 2005

Tornado Warning 20, NWS La Crosse, WI

August 18, 2005Trempealeau County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Aug 18, 2005, 2:18 PM CDT for Trempealeau County, Wisconsin. It was in force for 28 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 18, 2005, 2:18 PM CDT (19:18 UTC)
Expired
Aug 18, 2005, 2:46 PM CDT
In force
28 min
Issued by
NWS La Crosse, WI
Area
Counties, with a storm outline in the text

County Trempealeau County, WI

The radar

The La Crosse radar (KARX), 40 km from the middle of the area, began a volume at 19:19 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, 7.3 hours before the alert went out and 191 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 2005-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2005-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939Sfc1 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
13 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
72 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 181918
TORARX
WIC121-182015-
/O.NEW.KARX.TO.W.0020.050818T1918Z-050818T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
218 PM CDT THU AUG 18 2005

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN TREMPEALEAU COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 315 PM CDT

* AT 218 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A TORNADO 5
  MILES WEST OF CENTERVILLE...OR ABOUT 6 MILES EAST OF WINONA. THE
  TORNADO WAS MOVING EAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  TAMARACK AND CENTERVILLE AROUND 225 PM...
  GALESVILLE AROUND 235 PM...
  FRENCHVILLE AND IDUNA AROUND 240 PM...
  ETTRICK AND HIGHWAY 95 AND COUNTY D AROUND 245 PM...
  BEACH CORNERS AND THIMBLE PARK AROUND 250 PM...

A TORNADO IS BEING DETECTED BY RADAR. THIS MEANS THAT A TORNADO MAY
NOT BE OCCURRING WHEN THE WARNING IS ISSUED...BUT ONE IS EXPECTED TO
DEVELOP. 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 4404 9137 4405 9153 4411 9150 4413 9150
      4419 9155 4422 9150 4439 9117 4413 9116

$$

BAUMGARDT
2 follow-up statements
000 
WWUS53 KARX 181930
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
230 PM CDT THU AUG 18 2005

WIC121-182015-
/O.CON.KARX.TO.W.0020.000000T0000Z-050818T2015Z/
TREMPEALEAU WI-
230 PM CDT THU AUG 18 2005

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
TREMPEALEAU COUNTY...

AT 230 PM...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
THUNDERSTORM PRODUCING A TORNADO OVER CENTERVILLE...OR ABOUT 9 MILES
EAST OF WINONA. THE TORNADO WAS MOVING EAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  GALESVILLE AROUND 245 PM...
  FRENCHVILLE AND IDUNA AROUND 250 PM...
  ETTRICK AROUND 255 PM...
  THIMBLE PARK AROUND 305 PM...

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

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

LAT...LON 4404 9138 4403 9150 4411 9150 4413 9150
      4419 9150 4419 9143 4419 9117 4413 9116

$$

BAUMGARDT
000 
WWUS53 KARX 181946
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
245 PM CDT THU AUG 18 2005

WIC121-181955-
/O.CAN.KARX.TO.W.0020.000000T0000Z-050818T2015Z/
TREMPEALEAU WI-
245 PM CDT THU AUG 18 2005

...THE TORNADO WARNING FOR SOUTHERN TREMPEALEAU COUNTY HAS BEEN 
CANCELLED...

THE TORNADO THREAT HAS DIMINISHED. THEREFORE...THE TORNADO WARNING 
FOR SOUTHERN TREMPEALEAU COUNTY HAS BEEN CANCELLED.

ALTHOUGH THE WARNING IS NO LONGER IN EFFECT...STRONG STORMS REMAIN
POSSIBLE. THEREFORE...PERSONS ARE URGED TO STAY TUNED TO YOUR
FAVORITE MEDIA SOURCE FOR THE LATEST WEATHER INFORMATION.

LAT...LON 4404 9138 4403 9150 4411 9150 4413 9150
      4419 9150 4419 9143 4419 9117 4413 9116

$$

BAUMGARDT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 3:45 PM CDTSevere Thunderstorm WarningARXVernon45 min
Aug 18, 4:09 PM CDTSevere Thunderstorm WarningARXRichland66 min
Aug 18, 4:18 PM CDTTornado WarningARXRichland59 min
Aug 18, 4:56 PM CDTTornado WarningARXJuneau39 min
Aug 18, 5:43 PM CDTTornado WarningARXAdams26 min

Nearby

Tornado Warnings in Wisconsin, 2005Every tornado warning in 2005Tornadoes in 2005

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.