Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 116, NWS La Crosse, WI

December 15, 2021Clark County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Dec 15, 2021, 9:28 PM CST for Clark County, Wisconsin. It was in force for 16 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: Dec 15, 2021, 9:28 PM CST (03:28 UTC)
Expired: Dec 15, 2021, 9:44 PM CST
In force: 16 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Clark County, WI

The radar

The La Crosse radar (KARX), 129 km from the middle of the area, began a volume at 03:32 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
Dec 15, 5:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.5 hours before the alert went out and 196 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.

712 
WUUS53 KARX 160328
SVRARX
WIC019-160400-
/O.NEW.KARX.SV.W.0116.211216T0328Z-211216T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
928 PM CST Wed Dec 15 2021

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Northern Clark County in central Wisconsin...

* Until 1000 PM CST.

* At 928 PM CST, severe thunderstorms were located along a line
  extending from near Thorp to near Loyal, moving northeast at 60
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Colby around 935 PM CST.
  Abbotsford and Dorchester around 940 PM CST.

Other locations impacted by these severe thunderstorms include County
K And Capital Road, Curtiss, Sterling Avenue And Starks Road, Colby,
Atwood, Withee and County O And Sterling Avenue.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For your protection move to an interior room on the lowest floor of a
building.


&&

LAT...LON 4478 9032 4478 9072 4503 9088 4503 9031
TIME...MOT...LOC 0328Z 224DEG 54KT 4504 9078 4480 9042 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Rieck

1 follow-up statement

068 
WWUS53 KARX 160344 RRA
SVSARX

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

WIC019-160354-
/O.CAN.KARX.SV.W.0116.000000T0000Z-211216T0400Z/
Clark WI-
944 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CLARK COUNTY IS
CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

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

LAT...LON 4478 9032 4478 9072 4503 9088 4503 9031
TIME...MOT...LOC 0342Z 224DEG 54KT 4518 9060 4494 9024 

$$

Rieck

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, 9:07 PM CST	Tornado Warning	ARX	Clark	38 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, 9:32 PM CST	Tornado Warning	ARX	Clark, Taylor	28 min
Dec 15, 9:33 PM CST	Severe Thunderstorm Warning	ARX	Adams, Juneau	72 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.