Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 38, NWS La Crosse, WI

June 17, 2021La Crosse County, Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 17, 2021, 9:58 PM CDT for La Crosse County, Trempealeau County, Wisconsin. It was in force for 47 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
Jun 17, 2021, 9:58 PM CDT (02:58 UTC)
Expired
Jun 17, 2021, 10:45 PM CDT
In force
47 min
Issued by
NWS La Crosse, WI
Area
Storm-based polygon
Hail
1.5 in
Wind
50.0 mph

Counties La Crosse County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 24 km from the middle of the area, began a volume at 03:02 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

TimeReportWhereRemark
Jun 17, 9:59 PM CDTTSTM WND GST 502 Wsw Galesville, WI
Jun 17, 9:59 PM CDTHAIL 0.752 Wsw Galesville, WI
Jun 17, 10:30 PM CDTHAIL 22 W Centerville, WI
Jun 17, 10:40 PM CDTTSTM WND GST 602 Wsw Galesville, WI
Jun 17, 10:46 PM CDTHAIL 0.75Stevenstown, WI
Jun 17, 10:53 PM CDTHAIL 1.75Trempealeau, 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.

IssuedProductOfficeLasted
Jun 17, 3:50 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.0 hours before the alert went out and 206 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2021-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 61 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2021-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
61 J/kg
Mixed-layer CIN
-387 J/kg
Mixed-layer LCL
1555 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

960 
WUUS53 KARX 180258
SVRARX
WIC063-121-180345-
/O.NEW.KARX.SV.W.0038.210618T0258Z-210618T0345Z/

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

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Northern La Crosse County in west central Wisconsin...
  Southeastern Trempealeau County in west central Wisconsin...

* Until 1045 PM CDT.

* At 958 PM CDT, a severe thunderstorm was located over Galesville,
  or 13 miles southeast of Arcadia, moving east at 25 mph.

  HAZARD...Ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles.

* This severe thunderstorm will be near...
  Holmen around 1025 PM CDT.
  Bangor around 1045 PM CDT.

Other locations impacted by this severe thunderstorm include Camp
Decorah, Perrot State Park, Stevenstown, Highway 162 And County T,
Council Bay, Burr Oak and Highway 162 And County E E.

This includes Interstate 90 in Wisconsin between mile markers 17 and
20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4399 9143 4400 9144 4402 9152 4416 9145
      4411 9115 4407 9115 4407 9091 4387 9091
TIME...MOT...LOC 0258Z 290DEG 23KT 4408 9139 

HAIL...1.50IN
WIND...<50MPH
 
$$

JSB
2 follow-up statements
865 
WWUS53 KARX 180307
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1007 PM CDT Thu Jun 17 2021

WIC063-121-180345-
/O.CON.KARX.SV.W.0038.000000T0000Z-210618T0345Z/
La Crosse WI-Trempealeau WI-
1007 PM CDT Thu Jun 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR NORTHERN LA CROSSE AND SOUTHEASTERN TREMPEALEAU COUNTIES...

At 1005 PM CDT, a severe thunderstorm was located over Galesville, or
15 miles southeast of Arcadia, moving east at 25 mph.

HAZARD...Quarter size hail. At 959 PM, a NWS employee reported 50 
         mph winds and dime size hail in Galesville.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Holmen around 1020 PM CDT.
  Bangor around 1045 PM CDT.

Other locations impacted by this severe thunderstorm include Camp
Decorah, Perrot State Park, Stevenstown, Highway 162 And County T,
Council Bay, Burr Oak and Highway 162 And County E E.

This includes Interstate 90 in Wisconsin between mile markers 17 and
20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4399 9143 4400 9144 4402 9152 4416 9145
      4411 9115 4407 9115 4407 9091 4387 9091
TIME...MOT...LOC 0305Z 290DEG 23KT 4406 9133 

HAIL...1.00IN
WIND...<50MPH
 
$$

JSB
413 
WWUS53 KARX 180336
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1036 PM CDT Thu Jun 17 2021

WIC063-121-180345-
/O.CON.KARX.SV.W.0038.000000T0000Z-210618T0345Z/
La Crosse WI-Trempealeau WI-
1036 PM CDT Thu Jun 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR NORTHERN LA CROSSE AND SOUTHEASTERN TREMPEALEAU COUNTIES...

At 1036 PM CDT, a severe thunderstorm was located near North Bend, or
13 miles north of La Crosse, moving east at 50 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.

This severe storm will be near...
  Bangor around 1050 PM CDT.

Other locations impacted by this severe thunderstorm include Camp
Decorah, Perrot State Park, Stevenstown, Highway 162 And County T,
Council Bay, Burr Oak and Highway 162 And County E E.

This includes Interstate 90 in Wisconsin between mile markers 17 and
20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4399 9143 4400 9144 4402 9152 4416 9145
      4411 9115 4407 9115 4407 9091 4387 9091
TIME...MOT...LOC 0336Z 288DEG 42KT 4401 9115 

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

JSB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 7:24 PM CDTSevere Thunderstorm WarningARXClark40 min
Jun 17, 7:39 PM CDTSpecial Weather StatementARXJackson36 min
Jun 17, 7:54 PM CDTSevere Thunderstorm WarningARXClark, Jackson20 min
Jun 17, 8:27 PM CDTSevere Thunderstorm WarningARXBuffalo48 min
Jun 17, 8:52 PM CDTSevere Thunderstorm WarningARXBuffalo, Jackson, Trempealeau38 min
Jun 17, 8:56 PM CDTSevere Thunderstorm WarningARXTrempealeau64 min
Jun 17, 9:09 PM CDTSevere Thunderstorm WarningARXBuffalo51 min
Jun 17, 9:23 PM CDTSevere Thunderstorm WarningARXJackson, Trempealeau37 min
Jun 17, 9:34 PM CDTSpecial Weather StatementARXClark, Jackson41 min
Jun 17, 10:22 PM CDTSevere Thunderstorm WarningARXBuffalo, Trempealeau53 min
Jun 17, 10:46 PM CDTSevere Thunderstorm WarningARXLa Crosse, Monroe, Trempealeau44 min
Jun 17, 11:14 PM CDTSevere Thunderstorm WarningARXVernon25 min
Jun 17, 11:15 PM CDTAreal Flood AdvisoryARXBuffalo, La Crosse, Monroe, Trempealeau97 min
Jun 17, 11:28 PM CDTSpecial Weather StatementARXJuneau, Monroe47 min
Jun 17, 11:56 PM CDTSevere Thunderstorm WarningARXAdams, Juneau34 min
Jun 18, 12:26 AM CDTSpecial Weather StatementARXVernon34 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021Every 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.