Alert archive / Wisconsin / Tornado Warnings in 2021
Tornado Warning 10, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Aug 11, 2021, 1:48 PM CDT for Juneau County, Monroe County, Wisconsin. It was in force for 42 min. 3 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
- Aug 11, 2021, 1:48 PM CDT (18:48 UTC)
- Expired
- Aug 11, 2021, 2:30 PM CDT
- In force
- 42 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Juneau County, WI, Monroe County, WI
The radar
The La Crosse radar (KARX), 66 km from the middle of the area, began a volume at 18:50 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 |
|---|---|---|---|
| Aug 11, 1:55 PM CDT | TSTM WND GST 41 | Camp Douglas, WI | AWOS STATION KVOK VOLK FIELD. |
| Aug 11, 1:58 PM CDT | HAIL 1 | 1 Wnw Clifton, WI | |
| Aug 11, 2:08 PM CDT | TORNADO | 2 Wsw Clifton, WI | TORNADO REPORTED ONGOING ALONG KIRKWOOD AVE. REPORTED A DESTROYED BARN. |
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 |
|---|---|---|---|
| Aug 11, 12:17 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.8 hours before the alert went out and 197 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.
- Mixed-layer CAPE
- 1499 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
326
WFUS53 KARX 111848
TORARX
WIC057-081-111930-
/O.NEW.KARX.TO.W.0010.210811T1848Z-210811T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
148 PM CDT Wed Aug 11 2021
The National Weather Service in La Crosse has issued a
* Tornado Warning for...
Southwestern Juneau County in central Wisconsin...
Southeastern Monroe County in west central Wisconsin...
* Until 230 PM CDT.
* At 148 PM CDT, a severe thunderstorm capable of producing a tornado
was located 9 miles southwest of Tomah, moving east at 30 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Elroy around 220 PM CDT.
New Lisbon around 230 PM CDT.
Other locations impacted by this tornadic thunderstorm include Oil
City, St Marys, Jackson Pass, Wilton, Clifton, and Oakdale.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 61.
Interstate 90 in Wisconsin between mile markers 31 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4369 9012 4371 9031 4373 9031 4372 9047
4375 9075 4396 9072 4400 9016
TIME...MOT...LOC 1848Z 267DEG 24KT 4386 9059
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
$$
DTJ5 follow-up statements
566
WWUS53 KARX 111852
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
152 PM CDT Wed Aug 11 2021
WIC057-081-111930-
/O.CON.KARX.TO.W.0010.000000T0000Z-210811T1930Z/
Juneau WI-Monroe WI-
152 PM CDT Wed Aug 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN JUNEAU AND SOUTHEASTERN MONROE COUNTIES...
At 152 PM CDT, a confirmed tornado was located 9 miles south of
Tomah, moving east at 30 mph.
HAZARD...Damaging tornado and half dollar size hail.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
New Lisbon around 230 PM CDT.
Other locations impacted by this tornadic thunderstorm include Oil
City, St Marys, Jackson Pass, Wilton, Clifton, Lindina and Oakdale.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 62.
Interstate 90 in Wisconsin between mile markers 31 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4371 9012 4373 9031 4375 9075 4396 9072
4400 9016
TIME...MOT...LOC 1852Z 267DEG 24KT 4386 9056
TORNADO...OBSERVED
MAX HAIL SIZE...1.25 IN
$$
DTJ399
WWUS53 KARX 111858 CCA
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
158 PM CDT Wed Aug 11 2021
WIC057-081-111930-
/O.COR.KARX.TO.W.0010.000000T0000Z-210811T1930Z/
Juneau WI-Monroe WI-
158 PM CDT Wed Aug 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN JUNEAU AND SOUTHEASTERN MONROE COUNTIES...
At 156 PM CDT, a confirmed tornado was located 9 miles south of
Tomah, moving east at 30 mph.
HAZARD...Damaging tornado and half dollar size hail.
SOURCE...Weather spotters confirmed tornado 2 miles northeast of
Norwalk.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Elroy around 225 PM CDT.
New Lisbon around 230 PM CDT.
Other locations impacted by this tornadic thunderstorm include Oil
City, St Marys, Jackson Pass, Wilton, Clifton, Lindina and Oakdale.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 62.
Interstate 90 in Wisconsin between mile markers 31 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4371 9012 4373 9031 4375 9075 4396 9072
4400 9016
TIME...MOT...LOC 1852Z 268DEG 24KT 4386 9056
TORNADO...OBSERVED
MAX HAIL SIZE...1.25 IN
$$
DTJ469
WWUS53 KARX 111906
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
206 PM CDT Wed Aug 11 2021
WIC057-081-111930-
/O.CON.KARX.TO.W.0010.000000T0000Z-210811T1930Z/
Juneau WI-Monroe WI-
206 PM CDT Wed Aug 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN JUNEAU AND SOUTHEASTERN MONROE COUNTIES...
At 205 PM CDT, a confirmed tornado was located 9 miles southeast of
Tomah, moving east at 30 mph.
HAZARD...Damaging tornado and half dollar size hail.
SOURCE...Weather spotters did confirm a tornado 2 miles northeast of
Norwalk at 154pm.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
New Lisbon around 230 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Wilton, Clifton, Lindina, Oakdale, Volk Field, Johnson Hill and
Highway 131 And County A.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 62.
Interstate 90 in Wisconsin between mile markers 40 and 43.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4371 9012 4373 9031 4374 9053 4397 9054
4400 9016
TIME...MOT...LOC 1905Z 266DEG 25KT 4387 9042
TORNADO...OBSERVED
MAX HAIL SIZE...1.25 IN
$$
DTJ764
WWUS53 KARX 111911
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
211 PM CDT Wed Aug 11 2021
WIC057-081-111930-
/O.CON.KARX.TO.W.0010.000000T0000Z-210811T1930Z/
Juneau WI-Monroe WI-
211 PM CDT Wed Aug 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN JUNEAU AND SOUTHEASTERN MONROE COUNTIES...
At 210 PM CDT, a confirmed tornado was located 10 miles northwest of
Elroy, or 10 miles southeast of Tomah, moving east at 30 mph.
HAZARD...Damaging tornado and half dollar size hail.
SOURCE...Weather spotters confirmed a large tornado at 208 pm
approximately 2 miles west of Clifton.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
New Lisbon around 230 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Clifton, Lindina, Oakdale, Volk Field, Johnson Hill, Glendale and
Mill Bluff State Park.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 62.
Interstate 90 in Wisconsin near mile marker 43.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4371 9012 4373 9031 4374 9051 4397 9048
4400 9016
TIME...MOT...LOC 1910Z 266DEG 25KT 4387 9037
TORNADO...OBSERVED
MAX HAIL SIZE...1.25 IN
$$
DTJ286
WWUS53 KARX 111914
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
214 PM CDT Wed Aug 11 2021
WIC057-081-111930-
/O.CON.KARX.TO.W.0010.000000T0000Z-210811T1930Z/
Juneau WI-Monroe WI-
214 PM CDT Wed Aug 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
SOUTHWESTERN JUNEAU AND SOUTHEASTERN MONROE COUNTIES...
At 213 PM CDT, a confirmed large and extremely dangerous tornado was
located 7 miles west of New Lisbon, or 11 miles southeast of Tomah,
moving east at 35 mph.
This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!
HAZARD...Damaging tornado.
SOURCE...Weather spotters confirmed a large tornado at 208 pm
approximately 2 miles west of Clifton.
IMPACT...You are in a life-threatening situation. Flying debris may
be deadly to those caught without shelter. Mobile homes
will be destroyed. Considerable damage to homes,
businesses, and vehicles is likely and complete destruction
is possible.
The tornado will be near...
New Lisbon around 225 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Clifton, Lindina, Oakdale, Volk Field, Johnson Hill, Glendale and
Mill Bluff State Park.
This includes the following highways...
Interstate 90/94 between mile markers 47 and 62.
Interstate 90 in Wisconsin near mile marker 43.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4371 9012 4373 9031 4374 9051 4397 9048
4400 9016
TIME...MOT...LOC 1913Z 257DEG 30KT 4389 9030
TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
MAX HAIL SIZE...1.25 IN
$$
DTJThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 9:19 PM CDT | River Flood Warning | ARX | La Crosse, Trempealeau | 30 hr |
| Aug 11, 11:32 AM CDT | Special Weather Statement | ARX | Taylor | 28 min |
| Aug 11, 11:57 AM CDT | Special Weather Statement | ARX | Clark, Taylor | 33 min |
| Aug 11, 12:18 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 42 min |
| Aug 11, 12:31 PM CDT | Special Weather Statement | ARX | Clark, Jackson, La Crosse, Monroe | 59 min |
| Aug 11, 1:01 PM CDT | Tornado Warning | ARX | Clark | 17 min |
| Aug 11, 1:07 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 38 min |
| Aug 11, 1:41 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe | 64 min |
| Aug 11, 2:06 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 39 min |
| Aug 11, 2:18 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 42 min |
| Aug 11, 2:20 PM CDT | Tornado Warning | ARX | Adams, Juneau, Monroe | 55 min |
| Aug 11, 2:32 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 28 min |
| Aug 11, 3:06 PM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 54 min |
| Aug 11, 4:19 PM CDT | Special Weather Statement | ARX | Grant | 26 min |
| Aug 11, 4:23 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 22 min |
Nearby
Tornado Warnings in Wisconsin, 2021Every tornado warning in 2021Tornadoes 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.