Alert archive / Wisconsin / Tornado Warnings in 2017

Tornado Warning 10, NWS La Crosse, WI

June 11, 2017Clark County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jun 11, 2017, 8:32 PM CDT for Clark County, Wisconsin. It was in force for 13 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: Jun 11, 2017, 8:32 PM CDT (01:32 UTC)
Expired: Jun 11, 2017, 8:45 PM CDT
In force: 13 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Clark County, WI

The radar

The La Crosse radar (KARX), 137 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 11, 8:01 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.5 hours before the alert went out and 189 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: 428 J/kg
Mixed-layer CIN: -274 J/kg
Mixed-layer LCL: 1257 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 452 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

764 
WFUS53 KARX 120132
TORARX
WIC019-120145-
/O.NEW.KARX.TO.W.0010.170612T0132Z-170612T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
832 PM CDT SUN JUN 11 2017

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  Northeastern Clark County in central Wisconsin...

* Until 845 PM CDT
    
* At 832 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Owen, or 15 miles south of Medford, moving east at
  65 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Abbotsford, Abbotsford, Dorchester and Dorchester around 840 PM 
  CDT. 

Other locations impacted by this tornadic thunderstorm include Colby,
Curtiss and Atwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4488 9032 4486 9053 4496 9057 4502 9031
TIME...MOT...LOC 0132Z 252DEG 56KT 4492 9044 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CA

2 follow-up statements

648 
WWUS53 KARX 120139
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
839 PM CDT SUN JUN 11 2017

WIC019-120145-
/O.CON.KARX.TO.W.0010.000000T0000Z-170612T0145Z/
Clark WI-
839 PM CDT SUN JUN 11 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHEASTERN CLARK COUNTY...
    
At 838 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Abbotsford, or 13 miles south of Medford, moving
east at 65 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Clark County, including the following locations: Colby
and Curtiss.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4491 9032 4489 9044 4496 9046 4502 9031
TIME...MOT...LOC 0138Z 252DEG 56KT 4495 9030 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CA

502 
WWUS53 KARX 120142
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
842 PM CDT SUN JUN 11 2017

WIC019-120152-
/O.EXP.KARX.TO.W.0010.000000T0000Z-170612T0145Z/
Clark WI-
842 PM CDT SUN JUN 11 2017

...THE TORNADO WARNING FOR NORTHEASTERN CLARK COUNTY WILL EXPIRE AT
845 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 300 AM CDT for
central Wisconsin.

LAT...LON 4491 9032 4489 9044 4496 9046 4502 9031
TIME...MOT...LOC 0142Z 252DEG 56KT 4496 9024 

$$

CA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:32 PM CDT	Special Weather Statement	ARX	Taylor	43 min
Jun 11, 7:40 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	65 min
Jun 11, 8:03 PM CDT	Severe Thunderstorm Warning	ARX	Clark	42 min
Jun 11, 9:07 PM CDT	Special Weather Statement	ARX	Eau Claire	23 min
Jun 11, 9:17 PM CDT	Special Weather Statement	ARX	Taylor	28 min
Jun 11, 9:58 PM CDT	Areal Flood Advisory	ARX	Taylor	3 hr
Jun 11, 10:05 PM CDT	Special Weather Statement	ARX	Taylor	25 min
Jun 11, 11:20 PM CDT	Special Weather Statement	ARX	Jackson	25 min
Jun 12, 3:02 PM CDT	Special Weather Statement	ARX	Buffalo, Trempealeau	58 min
Jun 12, 3:37 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, La Crosse, Trempealeau	38 min
Jun 12, 4:05 PM CDT	Special Weather Statement	ARX	Jackson, Monroe	55 min
Jun 12, 4:17 PM CDT	Areal Flood Advisory	ARX	La Crosse	58 min
Jun 12, 4:38 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Juneau, Monroe	52 min
Jun 12, 4:58 PM CDT	Special Weather Statement	ARX	Juneau	47 min
Jun 12, 5:16 PM CDT	Special Weather Statement	ARX	Adams	44 min
Jun 12, 5:52 PM CDT	Special Weather Statement	ARX	Grant	53 min

Nearby

Tornado Warnings in Wisconsin, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.