Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 114, NWS La Crosse, WI

December 15, 2021Grant County, Richland County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Dec 15, 2021, 9:08 PM CST for Grant County, Richland County, Wisconsin. It was in force for 52 min. 8 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, 9:08 PM CST (03:08 UTC)
Expired: Dec 15, 2021, 10:00 PM CST
In force: 52 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Grant County, WI, Richland County, WI

The radar

The La Crosse radar (KARX), 110 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, 9:15 PM CST	TSTM WND GST 50	Blue River, WI
Dec 15, 9:34 PM CST	TSTM WND GST 60	Dickeyville, WI
Dec 15, 9:35 PM CST	TSTM WND GST 60	Platteville, WI
Dec 15, 9:55 PM CST	TSTM WND GST 62	Lone Rock, WI
Dec 15, 9:55 PM CST	TSTM WND GST 68	Platteville, WI
Dec 15, 9:55 PM CST	NON-TSTM WND GST 68	4 Sse Platteville, WI	AWOS STATION KPVB PLATTEVILLE MUNICIPAL AIRPORT.
Dec 15, 10:02 PM CST	TSTM WND GST 66	Lone Rock, WI	CORRECTS PREVIOUS TSTM WND GST REPORT FROM LONE ROCK.
Dec 15, 10:02 PM CST	TSTM WND GST 76	Lone Rock, 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
Dec 15, 5:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.1 hours before the alert went out and 152 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: 229 J/kg
Mixed-layer CIN: -358 J/kg
Mixed-layer LCL: 1061 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 433 m²/s²
0-3 km storm-relative helicity: 496 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

675 
WUUS53 KARX 160308
SVRARX
WIC043-103-160415-
/O.NEW.KARX.SV.W.0114.211216T0308Z-211216T0415Z/

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

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Eastern Grant County in southwestern Wisconsin...
  Richland County in southwestern Wisconsin...

* Until 1015 PM CST.

* At 908 PM CST, severe thunderstorms were located along a line
  extending from near Viroqua to near Bankston, moving east at 50
  mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Dubuque around 920 PM CST.
  Dickeyville around 935 PM CST.
  Cuba City and Hazel Green around 945 PM CST.

Other locations impacted by these severe thunderstorms include
Arthur, Highway 61 And County T, Montfort, Eagle Corners, Highway 80
And County C C, Woodstock and Gillingham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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


&&

LAT...LON 4258 9068 4355 9066 4355 9019 4317 9019
      4321 9029 4320 9043 4251 9042 4251 9064
TIME...MOT...LOC 0308Z 265DEG 42KT 4353 9080 4255 9100 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Rieck

1 follow-up statement

217 
WWUS53 KARX 160400
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1000 PM CST Wed Dec 15 2021

WIC043-103-160410-
/O.CAN.KARX.SV.W.0114.000000T0000Z-211216T0415Z/
Grant WI-Richland WI-
1000 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GRANT AND RICHLAND
COUNTIES 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 southwestern
Wisconsin.

LAT...LON 4258 9068 4355 9066 4355 9019 4317 9019
      4321 9029 4320 9043 4251 9042 4251 9064
TIME...MOT...LOC 0359Z 265DEG 42KT 4358 9001 4260 9023 

$$

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, 9:17 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

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.