Alert archive / Wisconsin / Tornado Warnings in 2017

Tornado Warning 25, NWS La Crosse, WI

July 19, 2017Grant County, Richland County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Jul 19, 2017, 6:59 PM CDT for Grant County, Richland County, Wisconsin. It was in force for 31 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: Jul 19, 2017, 6:59 PM CDT (23:59 UTC)
Expired: Jul 19, 2017, 7:30 PM CDT
In force: 31 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Grant County, WI, Richland County, WI

The radar

The La Crosse radar (KARX), 95 km from the middle of the area, began a volume at 00:02 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 19, 7:00 PM CDT	TSTM WND DMG	1 Sw Blue River, WI	TREES AND POWER LINES DOWN.
Jul 19, 7:00 PM CDT	TSTM WND DMG	1 Wsw Blue River, WI	TREES AND POWER LINES DOWN.
Jul 19, 7:25 PM CDT	TSTM WND DMG	1 Ssw Gotham, WI	TREES AND POWER LINES DOWN.
Jul 19, 7:25 PM CDT	TSTM WND DMG	Gotham, WI	TREES AND POWER LINES DOWN.

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 19, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 12.0 hours before the alert went out and 176 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: 147 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1286 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

092 
WFUS53 KARX 192359
TORARX
WIC043-103-200030-
/O.NEW.KARX.TO.W.0025.170719T2359Z-170720T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
659 PM CDT WED JUL 19 2017

The National Weather Service in La Crosse has issued a

* Tornado Warning for...
  Northeastern Grant County in southwestern Wisconsin...
  Southern Richland County in southwestern Wisconsin...

* Until 730 PM CDT

* At 659 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located 7
  miles west of Muscoda, or 13 miles southwest of Richland Center,
  moving east at 50 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. 

* These dangerous storms will be near...
  Muscoda around 710 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Westport, Excelsior, Lone Rock, Orion and Blue River.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4317 9022 4320 9026 4320 9028 4321 9029
      4321 9035 4320 9043 4313 9043 4314 9066
      4326 9067 4327 9067 4331 9019 4317 9019
TIME...MOT...LOC 2359Z 263DEG 44KT 4320 9057 

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

$$

RRS

3 follow-up statements

153 
WWUS53 KARX 200009
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
709 PM CDT WED JUL 19 2017

WIC043-200018-
/O.CAN.KARX.TO.W.0025.000000T0000Z-170720T0030Z/
Grant WI-
709 PM CDT WED JUL 19 2017

...THE TORNADO WARNING FOR NORTHEASTERN GRANT COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 900 PM CDT for
southwestern Wisconsin.

LAT...LON 4317 9021 4320 9026 4320 9028 4321 9029
      4321 9035 4320 9043 4321 9053 4328 9055
      4331 9019 4317 9019
TIME...MOT...LOC 0008Z 259DEG 34KT 4325 9043 

$$

WIC103-200030-
/O.CON.KARX.TO.W.0025.000000T0000Z-170720T0030Z/
Richland WI-
709 PM CDT WED JUL 19 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTHEASTERN RICHLAND COUNTY...

At 708 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Muscoda, or near Richland Center, moving east at 40 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
southeastern Richland County, including the following locations: Lone
Rock, Orion, Eagle Corners, Sextonville and Gotham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4317 9021 4320 9026 4320 9028 4321 9029
      4321 9035 4320 9043 4321 9053 4328 9055
      4331 9019 4317 9019
TIME...MOT...LOC 0008Z 259DEG 34KT 4325 9043 

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

$$

RRS

163 
WWUS53 KARX 200020
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
720 PM CDT WED JUL 19 2017

WIC103-200030-
/O.CON.KARX.TO.W.0025.000000T0000Z-170720T0030Z/
Richland WI-
720 PM CDT WED JUL 19 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTHEASTERN RICHLAND COUNTY...

At 720 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located 9 miles
northwest of Spring Green, or 10 miles southeast of Richland Center,
moving east at 50 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
southeastern Richland County, including the following locations: Lone
Rock, Twin Bluffs, Sextonville, Gotham and Highway 130 And Count B.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4317 9021 4320 9026 4320 9028 4321 9029
      4321 9033 4323 9035 4330 9034 4331 9019
      4317 9019
TIME...MOT...LOC 0020Z 271DEG 43KT 4324 9023 

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

$$

RRS

694 
WWUS53 KARX 200026
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
726 PM CDT WED JUL 19 2017

WIC103-200036-
/O.EXP.KARX.TO.W.0025.000000T0000Z-170720T0030Z/
Richland WI-
726 PM CDT WED JUL 19 2017

...THE TORNADO WARNING FOR SOUTHEASTERN RICHLAND COUNTY WILL EXPIRE
AT 730 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However strong 
winds are still possible with these thunderstorms.

A severe thunderstorm watch remains in effect until 900 PM CDT for
southwestern Wisconsin.

LAT...LON 4317 9021 4320 9026 4320 9028 4321 9029
      4321 9033 4323 9035 4330 9034 4331 9019
      4317 9019
TIME...MOT...LOC 0026Z 263DEG 44KT 4325 9016 

$$

RRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:18 PM CDT	Special Weather Statement	ARX	Trempealeau	27 min
Jul 18, 9:09 PM CDT	Special Weather Statement	ARX	Juneau	36 min
Jul 19, 5:34 PM CDT	Special Weather Statement	ARX	Crawford, Grant, La Crosse, Vernon	56 min
Jul 19, 6:02 PM CDT	Severe Thunderstorm Warning	ARX	Crawford, Grant, Richland	73 min
Jul 19, 6:16 PM CDT	Areal Flood Advisory	ARX	La Crosse	119 min
Jul 19, 6:48 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Vernon	42 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.