Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 87, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Aug 24, 2021, 7:18 AM CDT for Clark County, Jackson County, Wisconsin. It was in force for 72 min. 1 report 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 24, 2021, 7:18 AM CDT (12:18 UTC)
- Expired
- Aug 24, 2021, 8:30 AM CDT
- In force
- 72 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clark County, WI, Jackson County, WI
The radar
The La Crosse radar (KARX), 95 km from the middle of the area, began a volume at 12:22 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 24, 8:23 AM CDT | HAIL 0.7 | 6 Se Riplinger, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.3 hours before the alert went out and 195 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
- 58 J/kg
- Mixed-layer CIN
- -344 J/kg
- Mixed-layer LCL
- 1387 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
133
WUUS53 KARX 241218
SVRARX
WIC019-053-241330-
/O.NEW.KARX.SV.W.0087.210824T1218Z-210824T1330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
718 AM CDT Tue Aug 24 2021
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Clark County in central Wisconsin...
Northeastern Jackson County in west central Wisconsin...
* Until 830 AM CDT.
* At 718 AM CDT, severe thunderstorms were located along a line
extending from near Boyd to 8 miles north of Fairchild to 8 miles
east of Blair, 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.
* Locations impacted include...
Neillsville, Loyal, Greenwood, Humbird, Hatfield, Shortville,
Colby, Lynn, Longwood, Reseburg, Merrillan, Willard, Alma Center,
Granton, Atwood and Tioga.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
localized flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4425 9032 4435 9092 4494 9092 4494 9032
TIME...MOT...LOC 1218Z 268DEG 33KT 4490 9103 4473 9095 4434 9107
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rieck5 follow-up statements
332
WWUS53 KARX 241235
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
735 AM CDT Tue Aug 24 2021
WIC019-053-241330-
/O.CON.KARX.SV.W.0087.000000T0000Z-210824T1330Z/
Clark WI-Jackson WI-
735 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CLARK AND NORTHEASTERN JACKSON COUNTIES...
At 734 AM CDT, severe thunderstorms were located along a line
extending from near Thorp to 8 miles west of Greenwood to near Black
River Falls, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Neillsville, Loyal, Greenwood, Humbird, Hatfield, Shortville, Colby,
Lynn, Longwood, Reseburg, Merrillan, Willard, Alma Center, Granton,
Unity, and Tioga.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
localized flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4425 9032 4435 9092 4494 9092 4494 9032
TIME...MOT...LOC 1234Z 270DEG 33KT 4490 9087 4473 9079 4434 9091
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rieck510
WWUS53 KARX 241250
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
750 AM CDT Tue Aug 24 2021
WIC019-053-241330-
/O.CON.KARX.SV.W.0087.000000T0000Z-210824T1330Z/
Clark WI-Jackson WI-
750 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CLARK AND NORTHEASTERN JACKSON COUNTIES...
At 749 AM CDT, severe thunderstorms were located along a line
extending from near Owen to 7 miles south of Loyal to near
Neillsville to near Hatfield, 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.
Locations impacted include...
Neillsville, Loyal, Greenwood, Humbird, Hatfield, Shortville, Colby,
Lynn, Longwood, Reseburg, Merrillan, Willard, Alma Center, Granton,
Unity, Atwood and Tioga.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
localized flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4425 9032 4435 9092 4494 9092 4494 9032
TIME...MOT...LOC 1249Z 279DEG 35KT 4490 9061 4463 9048 4452 9064 4433
9072
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rieck363
WWUS53 KARX 241259
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
759 AM CDT Tue Aug 24 2021
WIC019-053-241330-
/O.CON.KARX.SV.W.0087.000000T0000Z-210824T1330Z/
Clark WI-Jackson WI-
759 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR CLARK AND NORTHEASTERN JACKSON COUNTIES...
At 758 AM CDT, severe thunderstorms were located along a line
extending from near Owen to 9 miles southeast of Loyal to Shortville
to 8 miles southeast of Hatfield, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Neillsville, Loyal, Greenwood, Hatfield, Shortville, Colby, Lynn,
Longwood, Merrillan, Alma Center, Granton, Unity, City Point,
Christie and Highway 10 And Bald Peak Road.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
localized flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4425 9032 4435 9092 4461 9087 4466 9070
4494 9073 4494 9032
TIME...MOT...LOC 1258Z 270DEG 33KT 4489 9052 4462 9039 4451 9055 4432
9063
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rieck327
WWUS53 KARX 241316
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
816 AM CDT Tue Aug 24 2021
WIC019-053-241330-
/O.CON.KARX.SV.W.0087.000000T0000Z-210824T1330Z/
Clark WI-Jackson WI-
816 AM CDT Tue Aug 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR SOUTHEASTERN CLARK AND NORTHEASTERN JACKSON COUNTIES...
At 815 AM CDT, severe thunderstorms were located along a line
extending from Colby to near Marshfield to 8 miles east of Shortville
to 14 miles northeast of Millston, 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.
Locations impacted include...
Neillsville, Loyal, Hatfield, Shortville, Colby, Lynn, Merrillan,
Granton, Unity, City Point, Bruce Mound, Riplinger, and Chili.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4425 9032 4434 9085 4459 9082 4466 9054
4494 9053 4494 9032
TIME...MOT...LOC 1315Z 270DEG 33KT 4489 9031 4462 9018 4451 9034 4432
9042
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Rieck009
WWUS53 KARX 241330
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
830 AM CDT Tue Aug 24 2021
WIC019-053-241339-
/O.EXP.KARX.SV.W.0087.000000T0000Z-210824T1330Z/
Clark WI-Jackson WI-
830 AM CDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLARK AND
NORTHEASTERN JACKSON COUNTIES WILL EXPIRE AT 830 AM CDT...
The storms which prompted the warning have weakened below severe
limits. Therefore, the warning will be allowed to expire.
LAT...LON 4425 9032 4434 9085 4459 9082 4466 9054
4494 9053 4494 9032
TIME...MOT...LOC 1329Z 268DEG 33KT 4489 9028 4462 9015 4451 9031 4432
9039
$$
RieckThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 6:11 AM CDT | Special Weather Statement | ARX | Buffalo, Trempealeau | 94 min |
| Aug 24, 6:50 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 40 min |
| Aug 24, 7:33 AM CDT | Special Weather Statement | ARX | Buffalo | 72 min |
| Aug 24, 8:41 AM CDT | Special Weather Statement | ARX | Trempealeau | 49 min |
| Aug 24, 9:07 AM CDT | Special Weather Statement | ARX | Clark, Taylor | 53 min |
| Aug 24, 10:00 AM CDT | Special Weather Statement | ARX | Adams | 15 min |
| Aug 24, 3:35 PM CDT | Tornado Warning | ARX | Grant | 40 min |
| Aug 24, 4:09 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 36 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.