Alert archive / Wisconsin / Tornado Warnings in 2021

Tornado Warning 27, NWS La Crosse, WI

December 15, 2021Clark County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Dec 15, 2021, 9:07 PM CST for Clark County, Wisconsin. It was in force for 38 min. 2 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: Dec 15, 2021, 9:07 PM CST (03:07 UTC)
Expired: Dec 15, 2021, 9:45 PM CST
In force: 38 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), 100 km from the middle of the area, began a volume at 03:10 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
Dec 15, 9:21 PM CST	TSTM WND DMG	Neillsville, WI	POWER LINES ACROSS ROAD, TREE DAMAGE, DEBRIS FROM DAMAGED ROOF.
Dec 15, 9:24 PM CST	TSTM WND DMG	Neillsville, WI	TREES AND POWER LINES DOWN ACROSS ROADS, DEBRIS FROM DAMAGE ROOF.

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
Dec 15, 5:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.1 hours before the alert went out and 202 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: 29 J/kg
Mixed-layer CIN: -469 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 689 m²/s²
0-3 km storm-relative helicity: 687 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

826 
WFUS53 KARX 160307
TORARX
WIC019-160345-
/O.NEW.KARX.TO.W.0027.211216T0307Z-211216T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
907 PM CST Wed Dec 15 2021

The National Weather Service in La Crosse has issued a

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

* Until 945 PM CST.

* At 907 PM CST, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located near
  Neillsville, moving northeast at 70 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...
  Loyal and Greenwood around 920 PM CST.

Other locations impacted by this tornadic thunderstorm include County
K And Capital Road, Hog Corners, Mead Lake, Highway 73 And 98,
Wildcat Mound, Tioga and Christie.

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 4484 9032 4442 9061 4442 9062 4448 9080
      4451 9080 4451 9087 4452 9091 4488 9082
      4488 9032
TIME...MOT...LOC 0307Z 213DEG 63KT 4457 9071 

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

$$

Baumgardt

3 follow-up statements

053 
WWUS53 KARX 160314
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
914 PM CST Wed Dec 15 2021

WIC019-160345-
/O.CON.KARX.TO.W.0027.000000T0000Z-211216T0345Z/
Clark WI-
914 PM CST Wed Dec 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR CENTRAL
CLARK COUNTY...

At 913 PM CST, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Neillsville, moving northeast at 80 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...
  Loyal and Greenwood around 920 PM CST.

Other locations impacted by this tornadic thunderstorm include County
K And Capital Road, Hog Corners, Mead Lake, Highway 73 And 98, Tioga,
Christie and Highway 10 And Bald Peak Road.

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 4446 9058 4456 9075 4459 9089 4488 9082
      4488 9032 4484 9032
TIME...MOT...LOC 0313Z 220DEG 68KT 4462 9069 

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

$$

Baumgardt

483 
WWUS53 KARX 160327
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
927 PM CST Wed Dec 15 2021

WIC019-160345-
/O.CON.KARX.TO.W.0027.000000T0000Z-211216T0345Z/
Clark WI-
927 PM CST Wed Dec 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR CENTRAL
CLARK COUNTY...

At 927 PM CST, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Loyal, or 13 miles northeast of Neillsville, moving northeast at 60
mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation. A funnel was reported 3 miles 
         southwest of Spencer. 

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
central Clark County, including the following locations... County K
And Capital Road, Mead Lake, Highway 73 And 98, Sterling Avenue And
Starks Road, Seven Sister Mounds, Riplinger and Unity.

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 4465 9045 4470 9062 4478 9084 4488 9082
      4488 9032 4484 9032
TIME...MOT...LOC 0327Z 214DEG 51KT 4474 9047 

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

$$

Baumgardt

586 
WWUS53 KARX 160337
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
937 PM CST Wed Dec 15 2021

WIC019-160346-
/O.EXP.KARX.TO.W.0027.000000T0000Z-211216T0345Z/
Clark WI-
937 PM CST Wed Dec 15 2021

...THE TORNADO WARNING FOR CENTRAL CLARK COUNTY WILL EXPIRE AT 945 PM
CST...
        
The storm which prompted the warning will have moved out of the area.
Therefore, the warning will be allowed to expire. 

A Tornado Warning remains in effect for the northern part of Calrk 
county until 10 pm. 

A Tornado Watch remains in effect until 1100 PM CST for central
Wisconsin.

LAT...LON 4465 9045 4470 9062 4478 9084 4488 9082
      4488 9032 4484 9032
TIME...MOT...LOC 0336Z 213DEG 63KT 4484 9038 

$$

Baumgardt

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 15, 7:53 PM CST	Severe Thunderstorm Warning Destructive damage threat	ARX	Buffalo, La Crosse, Trempealeau	67 min
Dec 15, 7:58 PM CST	Tornado Warning	ARX	Buffalo, Trempealeau	47 min
Dec 15, 8:01 PM CST	Tornado Warning	ARX	Buffalo	44 min
Dec 15, 8:16 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Crawford, Grant, Vernon	74 min
Dec 15, 8:24 PM CST	Severe Thunderstorm Warning Destructive damage threat	ARX	Clark, Jackson, La Crosse, Monroe, Vernon	81 min
Dec 15, 9:05 PM CST	Severe Thunderstorm Warning	ARX	Clark	25 min
Dec 15, 9:08 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Grant, Richland	52 min
Dec 15, 9:17 PM CST	Severe Thunderstorm Warning	ARX	Taylor	43 min
Dec 15, 9:28 PM CST	Severe Thunderstorm Warning	ARX	Clark	16 min
Dec 15, 9:32 PM CST	Tornado Warning	ARX	Clark, Taylor	28 min
Dec 15, 9:33 PM CST	Severe Thunderstorm Warning	ARX	Adams, Juneau	72 min

Nearby

Tornado Warnings in Wisconsin, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.