Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 42, NWS La Crosse, WI

June 17, 2021Adams County, Juneau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 17, 2021, 11:56 PM CDT for Adams County, Juneau County, Wisconsin. It was in force for 34 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: Jun 17, 2021, 11:56 PM CDT (04:56 UTC)
Expired: Jun 18, 2021, 12:30 AM CDT
In force: 34 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Adams County, WI, Juneau County, WI

The radar

The La Crosse radar (KARX), 104 km from the middle of the area, began a volume at 04:56 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
Jun 17, 10:01 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.9 hours before the alert went out and 167 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: 52 J/kg
Mixed-layer CIN: -285 J/kg
Mixed-layer LCL: 1895 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 397 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

031 
WUUS53 KARX 180456
SVRARX
WIC001-057-180530-
/O.NEW.KARX.SV.W.0042.210618T0456Z-210618T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
1156 PM CDT Thu Jun 17 2021

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Southern Juneau County in central Wisconsin...
  Southeastern Adams County in central Wisconsin...

* Until 1230 AM CDT.

* At 1156 PM CDT, a severe thunderstorm was located near Mauston,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Mauston around 1200 AM CDT.

Other locations impacted by this severe thunderstorm include County
Roads B And P, Dells Timberland Campground, County Roads B And K,
Johnson Hill, Lyndon Station, Stand Rock Campground and Big Spring.

This includes Interstate 90/94 between mile markers 65 and 86.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4364 8980 4369 9031 4388 9031 4381 8960
      4364 8960
TIME...MOT...LOC 0456Z 282DEG 48KT 4379 9017 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Kurz

2 follow-up statements

350 
WWUS53 KARX 180507
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1207 AM CDT Fri Jun 18 2021

WIC001-057-180530-
/O.CON.KARX.SV.W.0042.000000T0000Z-210618T0530Z/
Juneau WI-Adams WI-
1207 AM CDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR SOUTHEASTERN JUNEAU AND SOUTHEASTERN ADAMS COUNTIES...

At 1207 AM CDT, a severe thunderstorm was located near Mauston,
moving east at 60 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
southeastern Juneau and southeastern Adams Counties, including the
following locations... Arrowhead Resort Campground, County Roads B
And P, Dells Timberland Campground, K And L Campground, County Roads
B And K, Highway 23 And County G and Lyndon Station.

This includes Interstate 90/94 between mile markers 69 and 86.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4367 9013 4385 9004 4381 8960 4364 8960
      4364 8980
TIME...MOT...LOC 0507Z 284DEG 51KT 4375 8998 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Kurz

080 
WWUS53 KARX 180522
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1222 AM CDT Fri Jun 18 2021

WIC001-057-180531-
/O.EXP.KARX.SV.W.0042.000000T0000Z-210618T0530Z/
Juneau WI-Adams WI-
1222 AM CDT Fri Jun 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JUNEAU AND
SOUTHEASTERN ADAMS COUNTIES WILL EXPIRE AT 1230 AM CDT...
    
The severe thunderstorm which prompted the warning will soon move 
out of the warned area. Therefore, the warning will be allowed to 
expire.  However gusty winds are still possible with this 
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
central Wisconsin.

LAT...LON 4367 9013 4385 9004 4381 8960 4364 8960
      4364 8980
TIME...MOT...LOC 0521Z 282DEG 48KT 4371 8975 

$$

Kurz

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:24 PM CDT	Severe Thunderstorm Warning	ARX	Clark	40 min
Jun 17, 7:39 PM CDT	Special Weather Statement	ARX	Jackson	36 min
Jun 17, 7:54 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	20 min
Jun 17, 8:27 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	48 min
Jun 17, 8:52 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Jackson, Trempealeau	38 min
Jun 17, 8:56 PM CDT	Severe Thunderstorm Warning	ARX	Trempealeau	64 min
Jun 17, 9:09 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	51 min
Jun 17, 9:23 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Trempealeau	37 min
Jun 17, 9:34 PM CDT	Special Weather Statement	ARX	Clark, Jackson	41 min
Jun 17, 9:58 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Trempealeau	47 min
Jun 17, 10:22 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo, Trempealeau	53 min
Jun 17, 10:46 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Monroe, Trempealeau	44 min
Jun 17, 11:14 PM CDT	Severe Thunderstorm Warning	ARX	Vernon	25 min
Jun 17, 11:15 PM CDT	Areal Flood Advisory	ARX	Buffalo, La Crosse, Monroe, Trempealeau	97 min
Jun 17, 11:28 PM CDT	Special Weather Statement	ARX	Juneau, Monroe	47 min
Jun 18, 12:26 AM CDT	Special Weather Statement	ARX	Vernon	34 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.