Alert archive / Wisconsin / Tornado Warnings in 2013

Tornado Warning 24, NWS La Crosse, WI

July 22, 2013Trempealeau County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jul 22, 2013, 5:24 PM CDT for Trempealeau County, Wisconsin. It was in force for 36 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: Jul 22, 2013, 5:24 PM CDT (22:24 UTC)
Expired: Jul 22, 2013, 6:00 PM CDT
In force: 36 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

County Trempealeau County, WI

The radar

The La Crosse radar (KARX), 30 km from the middle of the area, began a volume at 22:25 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
Jul 22, 5:51 PM CDT	HAIL 1	Trempealeau, WI	FACEBOOK POST.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 22, 3:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.4 hours before the alert went out and 195 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: 2407 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 602 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.1

Open this sounding in Storm Lab

The text

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

264 
WFUS53 KARX 222224
TORARX
WIC121-222300-
/O.NEW.KARX.TO.W.0024.130722T2224Z-130722T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
524 PM CDT MON JUL 22 2013

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 520 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR BLUFF SIDING  
      IN SOUTHWEST TREMPEALEAU...AND MOVING EAST AT 20 MPH.

  HAZARD...DAMAGING TORNADO.

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
           LIKELY.

* THE TORNADO WILL BE NEAR...
  TREMPEALEAU AROUND 530 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4410 9145 4404 9133 4402 9134 4399 9132
      4399 9143 4401 9145 4402 9155 4404 9157
TIME...MOT...LOC 2223Z 275DEG 17KT 4403 9148

TORNADO...OBSERVED
HAIL...<.75IN

$$

BAUMGARDT

2 follow-up statements

213 
WWUS53 KARX 222234
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
534 PM CDT MON JUL 22 2013

WIC121-222300-
/O.CON.KARX.TO.W.0024.000000T0000Z-130722T2300Z/
TREMPEALEAU WI-
534 PM CDT MON JUL 22 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN TREMPEALEAU
COUNTY UNTIL 600 PM CDT...

AT 529 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR TREMPEALEAU...AND MOVING EAST AT 20 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

SOURCE...AT 520 PM WEATHER SPOTTERS REPORTED A ROTATING WALL CLOUD 
         AND A FUNNEL CLOUD.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHWESTERN
TREMPEALEAU COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4407 9146 4404 9134 4400 9133 4399 9133
      4399 9143 4401 9145 4402 9152 4405 9155
TIME...MOT...LOC 2234Z 278DEG 17KT 4402 9141

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

RRS

875 
WWUS53 KARX 222240
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
540 PM CDT MON JUL 22 2013

WIC121-222249-
/O.CAN.KARX.TO.W.0024.000000T0000Z-130722T2300Z/
TREMPEALEAU WI-
540 PM CDT MON JUL 22 2013

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

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN 
EFFECT FOR THE AREA UNTIL 6 PM FOR MAINLY LARGE HAIL. 

THERE IS STILL FREQUENT LIGHTNING AND HEAVY RAIN. 


LAT...LON 4407 9146 4404 9134 4400 9133 4399 9133
      4399 9143 4401 9145 4402 9152 4405 9155
TIME...MOT...LOC 2239Z 278DEG 17KT 4402 9138

$$

BAUMGARDT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 4:30 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	60 min
Jul 22, 5:14 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	61 min
Jul 22, 5:14 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse	61 min
Jul 22, 5:25 PM CDT	Severe Thunderstorm Warning	ARX	Trempealeau	35 min
Jul 22, 6:39 PM CDT	Severe Thunderstorm Warning	ARX	Vernon	36 min

Nearby

Tornado Warnings in Wisconsin, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.