Alert archive / Wisconsin / Tornado Warnings in 2017

Tornado Warning 12, NWS La Crosse, WI

June 28, 2017Grant County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jun 28, 2017, 5:40 PM CDT for Grant County, Wisconsin. It was in force for 35 min. 4 reports 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: Jun 28, 2017, 5:40 PM CDT (22:40 UTC)
Expired: Jun 28, 2017, 6:15 PM CDT
In force: 35 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Grant County, WI

The radar

The La Crosse radar (KARX), 110 km from the middle of the area, began a volume at 22:40 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
Jun 28, 5:45 PM CDT	TSTM WND GST 58	1 N Lancaster, WI
Jun 28, 5:54 PM CDT	TSTM WND GST 63	3 Ne Lancaster, WI	ON COUNTY RD A.
Jun 28, 6:00 PM CDT	TSTM WND DMG	1 W Livingston, WI	ROOF BLOWN OFF BARN. VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
Jun 28, 6:03 PM CDT	TSTM WND GST 78	3 Nw Livingston, WI

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
Jun 28, 2:53 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.7 hours before the alert went out and 144 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: 134 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 1152 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

278 
WFUS53 KARX 282240
TORARX
WIC043-282315-
/O.NEW.KARX.TO.W.0012.170628T2240Z-170628T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
540 PM CDT WED JUN 28 2017

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  East central Grant County in southwestern Wisconsin...

* Until 615 PM CDT
    
* At 539 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Lancaster, moving east at 45 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...
  Fennimore around 550 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Preston, Arthur, Montfort, Livingston and Mount Ida.

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 4284 9079 4301 9080 4306 9043 4281 9043
TIME...MOT...LOC 2239Z 270DEG 37KT 4292 9075 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

AJ

2 follow-up statements

514 
WWUS53 KARX 282248
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
548 PM CDT WED JUN 28 2017

WIC043-282315-
/O.CON.KARX.TO.W.0012.000000T0000Z-170628T2315Z/
Grant WI-
548 PM CDT WED JUN 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR EAST
CENTRAL GRANT COUNTY...
    
At 546 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Stitzer, or near Fennimore, moving east at 45 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. At 545 PM, the Stitzer Fire 
         Department reported observing a funnel cloud with this 
         storm. 

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
east central Grant County, including the following locations:
Preston, Arthur, Montfort, Livingston and Mount Ida.

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 4284 9079 4301 9080 4306 9043 4281 9043
TIME...MOT...LOC 2246Z 270DEG 37KT 4292 9065 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

AJ

717 
WWUS53 KARX 282311
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
611 PM CDT WED JUN 28 2017

WIC043-282320-
/O.EXP.KARX.TO.W.0012.000000T0000Z-170628T2315Z/
Grant WI-
611 PM CDT WED JUN 28 2017

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

To report severe weather, contact your nearest law enforcement 
agency. They will relay your report to the National Weather Service 
La Crosse.

A tornado watch remains in effect until 1000 PM CDT for southwestern 
Wisconsin.

LAT...LON 4284 9079 4301 9080 4306 9043 4281 9043
TIME...MOT...LOC 2310Z 270DEG 37KT 4292 9033 

$$

AJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 4:34 PM CDT	Special Weather Statement	ARX	Crawford, Grant	56 min
Jun 28, 4:44 PM CDT	Special Weather Statement	ARX	Buffalo, Clark, Jackson, Taylor, Trempealeau	61 min
Jun 28, 5:09 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	51 min
Jun 28, 5:11 PM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant	64 min
Jun 28, 5:36 PM CDT	Severe Thunderstorm Warning	ARX	Grant	54 min
Jun 28, 5:57 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	78 min
Jun 28, 6:28 PM CDT	Special Weather Statement	ARX	Grant	62 min
Jun 28, 6:31 PM CDT	Special Weather Statement	ARX	Grant	59 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.