Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 115, NWS La Crosse, WI

December 15, 2021Taylor County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Dec 15, 2021, 9:17 PM CST for Taylor County, Wisconsin. It was in force for 43 min. 1 report 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, 9:17 PM CST (03:17 UTC)
Expired: Dec 15, 2021, 10:00 PM CST
In force: 43 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Taylor County, WI

The radar

The La Crosse radar (KARX), 164 km from the middle of the area, began a volume at 03:17 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, 9:50 PM CST	TSTM WND DMG	Medford, WI	MANY TREES AND POWER LINES REPORTED DOWN ACROSS THE COUNTY, ESPECIALLY THE SOUTHERN HALF.

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, 3.3 hours before the alert went out and 192 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.

149 
WUUS53 KARX 160317
SVRARX
WIC119-160400-
/O.NEW.KARX.SV.W.0115.211216T0317Z-211216T0400Z/

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

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Taylor County in north central Wisconsin...

* Until 1000 PM CST.

* At 917 PM CST, severe thunderstorms were located along a line
  extending from near Cornell to 6 miles south of Loyal, moving
  northeast at 80 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Rib Lake around 955 PM CST.

Other locations impacted by these severe thunderstorms include Wood
Lake, Polley, The Mondeaux Flowage, Highway 13 And County Road M,
Stetsonville, Perkinstown and County Roads A And E.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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


&&

LAT...LON 4512 9004 4512 9020 4503 9020 4503 9092
      4538 9092 4538 9004
TIME...MOT...LOC 0317Z 205DEG 69KT 4521 9118 4464 9048 

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

110 
WWUS53 KARX 160355
SVSARX

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

WIC119-160405-
/O.EXP.KARX.SV.W.0115.000000T0000Z-211216T0400Z/
Taylor WI-
955 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR TAYLOR COUNTY WILL EXPIRE AT
1000 PM CST...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 4512 9004 4512 9020 4503 9020 4503 9092
      4538 9092 4538 9004
TIME...MOT...LOC 0355Z 270DEG 69KT 4573 9070 4516 9000 

$$

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, 9:28 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

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.