Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 27, 2021, 12:00 PM CDT for Jackson County, La Crosse County, Trempealeau County, Wisconsin. It was in force for 45 min. 2 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
- Jul 27, 2021, 12:00 PM CDT (17:00 UTC)
- Expired
- Jul 27, 2021, 12:45 PM CDT
- In force
- 45 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 2.0 in
- Wind
- 60.0 mph
Counties Jackson County, WI, La Crosse County, WI, Trempealeau County, WI
The radar
The La Crosse radar (KARX), 25 km from the middle of the area, began a volume at 17:01 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 |
|---|---|---|---|
| Jul 27, 12:05 PM CDT | HAIL 2.75 | 4 W North Bend, WI | RELAYED VIA SOCIAL MEDIA WITH PICTURE OF TENNIS TO BASEBALL SIZE HAIL. LASTED FOR ABOUT 10 MINUTES. |
| Jul 27, 12:18 PM CDT | HAIL 1.5 | Mindoro, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 5.0 hours before the alert went out and 208 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
- 1804 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 314 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.6
The text
As transmitted.
598
WUUS53 KARX 271700
SVRARX
WIC053-063-121-271745-
/O.NEW.KARX.SV.W.0055.210727T1700Z-210727T1745Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
1200 PM CDT Tue Jul 27 2021
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
La Crosse County in west central Wisconsin...
Southwestern Jackson County in west central Wisconsin...
Southeastern Trempealeau County in west central Wisconsin...
* Until 1245 PM CDT.
* At 1200 PM CDT, a severe thunderstorm was located near Galesville,
or 14 miles southeast of Arcadia, moving southeast at 40 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
North Bend around 1210 PM CDT.
West Salem around 1225 PM CDT.
Bangor around 1230 PM CDT.
This includes Interstate 90 in Wisconsin between mile markers 9 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4411 9151 4423 9132 4404 9091 4373 9091
TIME...MOT...LOC 1700Z 307DEG 36KT 4411 9128
HAIL...2.00IN
WIND...60MPH
$$
JSB5 follow-up statements
530
WWUS53 KARX 271703
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1203 PM CDT Tue Jul 27 2021
WIC053-063-121-271745-
/O.CON.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
La Crosse WI-Jackson WI-Trempealeau WI-
1203 PM CDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR LA CROSSE...SOUTHWESTERN JACKSON AND SOUTHEASTERN TREMPEALEAU
COUNTIES...
At 1203 PM CDT, a severe thunderstorm was located near Galesville, or
16 miles southeast of Arcadia, moving southeast at 40 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
North Bend around 1210 PM CDT.
Other locations in the path of this severe thunderstorm include West
Salem and Bangor.
This includes Interstate 90 in Wisconsin between mile markers 9 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4406 9144 4420 9126 4404 9091 4373 9091
TIME...MOT...LOC 1703Z 307DEG 36KT 4409 9124
HAIL...2.00IN
WIND...60MPH
$$
JSB142
WWUS53 KARX 271715
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1215 PM CDT Tue Jul 27 2021
WIC053-063-121-271745-
/O.CON.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
La Crosse WI-Jackson WI-Trempealeau WI-
1215 PM CDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR LA CROSSE...SOUTHWESTERN JACKSON AND SOUTHEASTERN TREMPEALEAU
COUNTIES...
At 1215 PM CDT, a severe thunderstorm was located near North Bend, or
14 miles northeast of La Crosse, moving southeast at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
West Salem around 1220 PM CDT.
Other locations in the path of this severe thunderstorm include
Bangor.
This includes Interstate 90 in Wisconsin between mile markers 9 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4402 9138 4416 9117 4404 9091 4373 9091
TIME...MOT...LOC 1715Z 307DEG 36KT 4402 9110
HAIL...1.50IN
WIND...60MPH
$$
JSB471
WWUS53 KARX 271720 RRA
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1220 PM CDT Tue Jul 27 2021
WIC121-271730-
/O.CAN.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
Trempealeau WI-
1220 PM CDT Tue Jul 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TREMPEALEAU
COUNTY IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4398 9131 4412 9108 4404 9091 4373 9091
TIME...MOT...LOC 1720Z 307DEG 36KT 4399 9104
$$
WIC053-063-271745-
/O.CON.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
La Crosse WI-Jackson WI-
1220 PM CDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR NORTHEASTERN LA CROSSE AND SOUTHWESTERN JACKSON COUNTIES...
At 1220 PM CDT, a severe thunderstorm was located near West Salem, or
11 miles west of Sparta, moving southeast at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
Bangor around 1230 PM CDT.
This includes Interstate 90 in Wisconsin between mile markers 9 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4398 9131 4412 9108 4404 9091 4373 9091
TIME...MOT...LOC 1720Z 307DEG 36KT 4399 9104
HAIL...1.50IN
WIND...60MPH
$$
JSB465
WWUS53 KARX 271729
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1229 PM CDT Tue Jul 27 2021
WIC053-271739-
/O.CAN.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
Jackson WI-
1229 PM CDT Tue Jul 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JACKSON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4394 9120 4407 9106 4407 9102 4404 9091
4373 9091
TIME...MOT...LOC 1729Z 302DEG 34KT 4398 9095
$$
WIC063-271745-
/O.CON.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
La Crosse WI-
1229 PM CDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR NORTHEASTERN LA CROSSE COUNTY...
At 1229 PM CDT, a severe thunderstorm was located near Bangor, or 7
miles west of Sparta, moving southeast 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.
This severe thunderstorm will remain over mainly rural areas of
northeastern La Crosse County, including the following locations...
The Coulee Experimental Forest, Highway 162 And County T, Burr Oak,
Highway 162 And County E E, Rockland, County Roads D E And E and
Middle Ridge.
This includes Interstate 90 in Wisconsin between mile markers 10 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4394 9120 4407 9106 4407 9102 4404 9091
4373 9091
TIME...MOT...LOC 1729Z 302DEG 34KT 4398 9095
HAIL...1.00IN
WIND...60MPH
$$
JSB240
WWUS53 KARX 271746
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1246 PM CDT Tue Jul 27 2021
WIC063-271755-
/O.EXP.KARX.SV.W.0055.000000T0000Z-210727T1745Z/
La Crosse WI-
1246 PM CDT Tue Jul 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LA CROSSE COUNTY
HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits. Therefore, the warning has been allowed to expire.
LAT...LON 4394 9120 4407 9106 4407 9102 4404 9091
4373 9091
TIME...MOT...LOC 1745Z 307DEG 36KT 4390 9080
$$
JSBThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 10:24 PM CDT | Special Weather Statement | ARX | Taylor | 66 min |
| Jul 27, 1:49 AM CDT | Special Weather Statement | ARX | Taylor | 56 min |
| Jul 27, 2:45 AM CDT | Special Weather Statement | ARX | Taylor | 60 min |
| Jul 27, 6:34 AM CDT | Special Weather Statement | ARX | Clark | 56 min |
| Jul 27, 7:01 AM CDT | Special Weather Statement | ARX | Trempealeau | 59 min |
| Jul 27, 7:08 AM CDT | Special Weather Statement | ARX | Clark | 67 min |
| Jul 27, 7:33 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 57 min |
| Jul 27, 8:17 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Vernon | 58 min |
| Jul 27, 8:36 AM CDT | Special Weather Statement | ARX | Juneau | 54 min |
| Jul 27, 9:16 AM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 28 min |
| Jul 27, 11:54 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Trempealeau | 51 min |
| Jul 27, 3:10 PM CDT | Heat Advisory | ARX | Buffalo, Crawford, Grant, Jackson, La Crosse, Monroe and 3 more | 30 hr |
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.