Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS La Crosse, WI

May 25, 2021Buffalo County, Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at May 25, 2021, 4:50 PM CDT for Buffalo County, Trempealeau County, Wisconsin. It was in force for 40 min. 6 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: May 25, 2021, 4:50 PM CDT (21:50 UTC)
Expired: May 25, 2021, 5:30 PM CDT
In force: 40 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Buffalo County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 49 km from the middle of the area, began a volume at 21:51 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
May 25, 4:56 PM CDT	TSTM WND GST 60	3 S Arcadia, WI	1 TO 2 INCH LIMBS DOWN. TORRENTIAL RAIN.
May 25, 4:57 PM CDT	TSTM WND DMG	Arcadia, WI	TREES DAMAGE AND SEMI TRAILERS FLIPPED
May 25, 4:57 PM CDT	TSTM WND DMG	Arcadia, WI	TREES DAMAGE AND SEMI TRAILERS FLIPPED.
May 25, 4:57 PM CDT	TSTM WND DMG	Arcadia, WI	SEVERAL LIGHT POLES AT SPEEDWAY BLOWN DOWN. ABOUT A DOZEN TREES DOWN IN MEMORIAL PARK AND OTHER TREES BLOWN DOWN IN THE DOWNTOWN AREA. ONE MOBILE HOME WAS BLOWN OFF FOUNDATION ON NORTH SIDE OF TOWN. ESTIMATED STRAIGHT LINE WIND DAMAGE.
May 25, 4:59 PM CDT	TSTM WND DMG	Arcadia, WI	NUMEROUS TREES DOWN AROUND COUNTY, SOME ON HOMES AND POWER LINES. ONE MOBILE HOME FLIPPED.
May 25, 4:59 PM CDT	TSTM WND GST 60	Arcadia, 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
May 25, 2:53 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.8 hours before the alert went out and 277 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: 96 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

671 
WUUS53 KARX 252150
SVRARX
WIC011-121-252230-
/O.NEW.KARX.SV.W.0019.210525T2150Z-210525T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
450 PM CDT Tue May 25 2021

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Southeastern Buffalo County in west central Wisconsin...
  Trempealeau County in west central Wisconsin...

* Until 530 PM CDT.

* At 449 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles northwest of Arcadia to near Fountain City
  to Rollingstone, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Arcadia around 500 PM CDT.
  Independence around 505 PM CDT.
  Whitehall around 510 PM CDT.
  Blair around 520 PM CDT.
  Galesville around 530 PM CDT.

Other locations impacted by these severe thunderstorms include
Highway 95 And County D, Waumandee, Czechville, Merrick State Park,
Highway 95 And County G, Dodge and Beach Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4420 9180 4440 9161 4442 9117 4425 9117
      4425 9115 4412 9115 4406 9130 4406 9163
      4410 9168 4410 9171 4413 9173 4413 9175
      4416 9180 4418 9183
TIME...MOT...LOC 2149Z 265DEG 33KT 4430 9160 4417 9167 4409 9185 

HAIL...1.00IN
WIND...60MPH
 
$$

Wetenkamp

3 follow-up statements

100 
WWUS53 KARX 252158
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
458 PM CDT Tue May 25 2021

WIC011-121-252230-
/O.CON.KARX.SV.W.0019.000000T0000Z-210525T2230Z/
Buffalo WI-Trempealeau WI-
458 PM CDT Tue May 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SOUTHEASTERN BUFFALO AND TREMPEALEAU COUNTIES...

At 457 PM CDT, severe thunderstorms were located along a line
extending from near Whitehall to Arcadia to near Rollingstone, moving
east at 45 mph.

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

SOURCE...Trained weather spotters.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Whitehall around 505 PM CDT.
  Blair around 520 PM CDT.
  Galesville around 525 PM CDT.

Other locations impacted by these severe thunderstorms include
Highway 95 And County D, Waumandee, Czechville, Merrick State Park,
Highway 95 And County G, Dodge and Beach Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4420 9180 4440 9161 4442 9117 4425 9117
      4425 9115 4412 9115 4406 9130 4406 9163
      4410 9168 4410 9171 4413 9173 4413 9175
      4416 9180 4418 9183
TIME...MOT...LOC 2157Z 259DEG 39KT 4437 9136 4423 9149 4410 9177 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Wetenkamp

471 
WWUS53 KARX 252206
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
506 PM CDT Tue May 25 2021

WIC011-121-252230-
/O.CON.KARX.SV.W.0019.000000T0000Z-210525T2230Z/
Buffalo WI-Trempealeau WI-
506 PM CDT Tue May 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SOUTHEASTERN BUFFALO AND TREMPEALEAU COUNTIES...

At 504 PM CDT, severe thunderstorms were located along a line
extending from Whitehall to near Arcadia to Fountain City, moving
east at 40 mph.

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

SOURCE...Trained weather spotters reported 60 mph winds in the 
         Arcadia area at 459 PM.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Whitehall around 510 PM CDT.
  Blair around 525 PM CDT.

Other locations impacted by these severe thunderstorms include
Highway 95 And County D, Highway 95 And County G, Dodge, Beach
Corners, Marshland, Thimble Park and Highway 95 And County C.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for damaging winds. People outside should move 
to a shelter, inside a strong building and away from windows.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4420 9167 4440 9153 4442 9117 4425 9117
      4425 9115 4412 9115 4406 9130 4406 9163
      4410 9168 4410 9169 4412 9169 4415 9167
      4416 9167 4418 9166
TIME...MOT...LOC 2204Z 265DEG 33KT 4437 9130 4423 9143 4410 9171 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Wetenkamp

059 
WWUS53 KARX 252225
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
525 PM CDT Tue May 25 2021

WIC011-121-252234-
/O.EXP.KARX.SV.W.0019.000000T0000Z-210525T2230Z/
Buffalo WI-Trempealeau WI-
525 PM CDT Tue May 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUFFALO AND
TREMPEALEAU COUNTIES WILL EXPIRE AT 530 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
west central Wisconsin.

LAT...LON 4420 9167 4440 9153 4442 9117 4425 9117
      4425 9115 4412 9115 4406 9130 4406 9163
      4410 9168 4410 9169 4412 9169 4415 9167
      4416 9167 4418 9166
TIME...MOT...LOC 2224Z 265DEG 33KT 4438 9105 4425 9118 4412 9146 

$$

Wetenkamp

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 3:45 PM CDT	Severe Thunderstorm Warning	ARX	Buffalo	60 min
May 25, 4:06 PM CDT	Severe Thunderstorm Warning	ARX	Taylor	54 min
May 25, 4:47 PM CDT	Special Weather Statement	ARX	Trempealeau	28 min
May 25, 5:01 PM CDT	Severe Thunderstorm Warning	ARX	Taylor	44 min
May 25, 5:11 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	64 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.