Alert archive / Wisconsin / Tornado Warnings in 2001

Tornado Warning 11, NWS La Crosse, WI

June 18, 2001Trempealeau County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jun 18, 2001, 8:29 PM CDT for Trempealeau County, Wisconsin. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 18, 2001, 8:29 PM CDT (01:29 UTC)
Expired: Jun 18, 2001, 9:00 PM CDT
In force: 31 min
Issued by: NWS La Crosse, WI
Area: Whole counties

County Trempealeau County, WI

The radar

The La Crosse radar (KARX), 55 km from the middle of the area, began a volume at 01:30 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 18, 7:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.5 hours before the alert went out and 188 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: 2360 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1718 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KARX 190131
TORLSE

WIC121-190200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
829 PM CDT MON JUN 18 2001

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

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

* UNTIL 900 PM CDT

* AT 829 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A TORNADO NEAR STRUM.  SPOTTERS REPORT A FUNNEL OVER               
  STRUM...3 OR ABOUT 12 MILES EAST OF   MONDOVI...MOVING NORTHEAST   
  AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE...
  NEAR OSSEO AT 840 PM CDT...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
NOT BE OCCURRING WHEN THE WARNING IS ISSUED...BUT ONE IS EXPECTED TO
DEVELOP. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...TAKE COVER
IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR!
2
PLEASE REPORT ANY SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT OFFICE
AND TELL THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

$$

BAUMGARDT

LAT...LON 4461 9157 4445 9146 4452 9116 4460 9117

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:43 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	62 min
Jun 18, 8:04 PM CDT	Severe Thunderstorm Warning	ARX	Clark	56 min
Jun 18, 8:36 PM CDT	Severe Thunderstorm Warning	ARX	Taylor	54 min
Jun 18, 10:03 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	42 min
Jun 18, 10:25 PM CDT	Severe Thunderstorm Warning	ARX	Trempealeau	35 min
Jun 18, 10:55 PM CDT	Severe Thunderstorm Warning	ARX	Vernon	65 min
Jun 18, 11:33 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	57 min

Nearby

Tornado Warnings in Wisconsin, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.