Alert archive / Wisconsin / Tornado Warnings in 2011

Tornado Warning 5, NWS La Crosse, WI

April 10, 2011Monroe County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Apr 10, 2011, 5:13 PM CDT for Monroe County, Wisconsin. It was in force for 47 min. 4 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
Apr 10, 2011, 5:13 PM CDT (22:13 UTC)
Expired
Apr 10, 2011, 6:00 PM CDT
In force
47 min
Issued by
NWS La Crosse, WI
Area
Storm-based polygon

County Monroe County, WI

The radar

The La Crosse radar (KARX), 51 km from the middle of the area, began a volume at 22:14 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
Apr 10, 5:16 PM CDTHAIL 11 S Sparta, WIAT I-90 EXIT 25
Apr 10, 5:25 PM CDTHAIL 1.757 E Sparta, WIAT HWY 16 AND CTH A
Apr 10, 5:36 PM CDTFUNNEL CLOUD3 Sw Oakdale, WIPOSSIBLE FUNNEL REPORTED BY PUBLIC
Apr 10, 5:40 PM CDTHAIL 2.5Tomah, WIHAIL MEASUREMENTS BETWEEN GOLF BALL AND TENNIS BALL SIZE. WIND GUSTS ALSO ESTIMATED AROUND 70 MPH.

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
Apr 10, 3:19 PM CDTTornado Watch PDSSPC7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.2 hours before the alert went out and 210 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, Green Bay/Straub, WI at 12:00Z on 2011-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 56 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, Green Bay/Straub, WI at 12:00Z on 2011-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
56 J/kg
Mixed-layer CIN
-264 J/kg
Mixed-layer LCL
799 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

675 
WFUS53 KARX 102213
TORARX
WIC081-102300-
/O.NEW.KARX.TO.W.0005.110410T2213Z-110410T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
513 PM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN MONROE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 600 PM CDT

* AT 509 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR HIGHWAY 33 AND COUNTY Y...OR 12 MILES SOUTHWEST OF
  SPARTA...MOVING EAST AT 40 MPH. THIS TORNADO WARNING UPGRADES THE
  PREVIOUS SEVERE THUNDERSTORM WARNING FOR MONROE COUNTY.

* THE TORNADO WILL BE NEAR...
  SPARTA AND CASHTON AROUND 520 PM...
  ST MARYS AND FARMERS VALLEY AROUND 525 PM...
  NORWALK AROUND 530 PM...
  RIDGEVILLE AND OIL CITY AROUND 535 PM...
  TOMAH AND WILTON AROUND 540 PM...
  TUNNEL TRAIL CAMPGROUND AND HOFFMAN CORNERS AROUND 545 PM...
  CLIFTON AND KENDALL AROUND 550 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM SUNDAY EVENING FOR
NORTHEAST IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN.

&&

LAT...LON 4372 9046 4373 9091 4395 9091 4401 9032
      4373 9031
TIME...MOT...LOC 2213Z 264DEG 35KT 4381 9088

$$

DTJ
3 follow-up statements
049 
WWUS53 KARX 102219
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
519 PM CDT SUN APR 10 2011

WIC081-102300-
/O.CON.KARX.TO.W.0005.000000T0000Z-110410T2300Z/
MONROE WI-
519 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN MONROE COUNTY
UNTIL 600 PM CDT...

LOCAL LAW ENFORCEMENT OFFICIALS REPORTED QUARTER SIZE HAIL ONE MILE 
SOUTH OF SPARTA.

AT 514 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
SEVERE THUNDERSTORM WAS LOCATED NEAR HIGHWAY 33 AND COUNTY Y...OR 8
MILES SOUTH OF SPARTA...MOVING EAST AT 40 MPH. IN ADDITION TO A
TORNADO...THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DESTRUCTIVE
WINDS IN EXCESS OF 70 MPH.

* THE TORNADO WILL BE NEAR...
  ST MARYS AND FARMERS VALLEY AROUND 525 PM...
  NORWALK AROUND 530 PM...
  RIDGEVILLE AND JACKSON PASS AROUND 535 PM...
  WILTON AROUND 540 PM...
  TOMAH AND HIGHWAY 131 AND COUNTY A AROUND 545 PM...
  I 90 94 EXIT 48 AND OAKDALE AROUND 550 PM...
  CLIFTON AND MILL BLUFF STATE PARK AROUND 555 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM SUNDAY EVENING FOR
NORTHEAST IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN.

&&

LAT...LON 4372 9046 4373 9091 4395 9091 4401 9032
      4373 9031
TIME...MOT...LOC 2218Z 262DEG 35KT 4383 9082

$$

DTJ
036 
WWUS53 KARX 102234
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
534 PM CDT SUN APR 10 2011

WIC081-102300-
/O.CON.KARX.TO.W.0005.000000T0000Z-110410T2300Z/
MONROE WI-
534 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN MONROE COUNTY
UNTIL 600 PM CDT...

TRAINED SPOTTER REPORTED HALF INCH SIZE HAIL IN TUNNEL CITY.

AT 532 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO LOCATED NEAR JACKSON PASS...OR 7 MILES SOUTHWEST OF TOMAH...
MOVING EAST AT 45 MPH. IN ADDITION TO A TORNADO...THIS STORM CAN 
PRODUCE QUARTER SIZE HAIL AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.

* THE TORNADO WILL BE NEAR...
  TOMAH AND HIGHWAY 131 AND COUNTY A AROUND 540 PM...
  I 90 AND I 94 INTERCHANGE AND KENDALL AROUND 545 PM...
  MILL BLUFF STATE PARK AND I 90 94 EXIT 48 AROUND 550 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM SUNDAY EVENING FOR
NORTHEAST IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN.

&&

LAT...LON 4373 9031 4373 9063 4373 9091 4395 9091
      4401 9032
TIME...MOT...LOC 2234Z 258DEG 37KT 4391 9057

$$

DTJ
089 
WWUS53 KARX 102244
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
544 PM CDT SUN APR 10 2011

WIC081-102300-
/O.CON.KARX.TO.W.0005.000000T0000Z-110410T2300Z/
MONROE WI-
544 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN MONROE COUNTY
UNTIL 600 PM CDT...

AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO LOCATED NEAR I 90 EXIT 43...OR NEAR TOMAH...MOVING EAST AT 45
MPH. IN ADDITION TO A TORNADO...THIS STORM CAN PRODUCE QUARTER SIZE
HAIL AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.

* THE TORNADO WILL BE NEAR...
  MILL BLUFF STATE PARK AROUND 550 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR
AND STAY AWAY FROM WINDOWS! CARS AND MOBILE HOMES SHOULD BE ABANDONED
FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND
COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM SUNDAY EVENING FOR
NORTHEAST IOWA AND SOUTHEAST MINNESOTA AND WESTERN WISCONSIN.

&&

LAT...LON 4373 9031 4373 9063 4373 9091 4395 9091
      4401 9032
TIME...MOT...LOC 2244Z 251DEG 40KT 4395 9042

$$

DTJ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 10:58 AM CDTRiver Flood WarningARXBuffalo, Trempealeau57 hr
Apr 10, 3:46 PM CDTSevere Thunderstorm WarningARXBuffalo29 min
Apr 10, 4:16 PM CDTSevere Thunderstorm WarningARXBuffalo29 min
Apr 10, 4:24 PM CDTSevere Thunderstorm WarningARXBuffalo, Jackson, Trempealeau41 min
Apr 10, 4:32 PM CDTTornado WarningARXLa Crosse, Vernon43 min
Apr 10, 5:03 PM CDTSevere Thunderstorm WarningARXVernon27 min
Apr 10, 5:04 PM CDTSevere Thunderstorm WarningARXJuneau, Monroe26 min
Apr 10, 5:09 PM CDTTornado WarningARXClark, Taylor66 min
Apr 10, 5:39 PM CDTSevere Thunderstorm WarningARXAdams, Jackson, Juneau, Monroe66 min
Apr 10, 5:56 PM CDTSevere Thunderstorm WarningARXAdams, Juneau, Monroe64 min
Apr 10, 6:12 PM CDTTornado WarningARXTaylor33 min
Apr 10, 6:16 PM CDTTornado WarningARXAdams, Juneau44 min
Apr 10, 6:57 PM CDTTornado WarningARXAdams, Juneau33 min

Nearby

Tornado Warnings in Wisconsin, 2011Every tornado warning in 2011Tornadoes in 2011

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.