Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 65, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Aug 7, 2021, 11:24 AM CDT for Houston County, Minnesota; La Crosse County, Vernon County, Wisconsin. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2021, 11:24 AM CDT (16:24 UTC)
- Expired
- Aug 7, 2021, 11:51 AM CDT
- In force
- 27 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Houston County, MN, La Crosse County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 8 km from the middle of the area, began a volume at 16:28 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.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 4.4 hours before the alert went out and 249 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
- 1645 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1006 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
166
WUUS53 KARX 071624
SVRARX
MNC055-WIC063-123-071715-
/O.NEW.KARX.SV.W.0065.210807T1624Z-210807T1715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
1124 AM CDT Sat Aug 7 2021
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Northeastern Houston County in southeastern Minnesota...
Southeastern La Crosse County in west central Wisconsin...
Northwestern Vernon County in southwestern Wisconsin...
* Until 1215 PM CDT.
* At 1124 AM CDT, a severe thunderstorm was located near Hokah, or 7
miles northeast of Caledonia, moving northeast at 30 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
La Crosse, La Crescent, Caledonia, Onalaska, West Salem, Bangor,
Stoddard, Coon Valley, Hokah, Brownsville, French Island, La Crosse
Airport, Medary, Burns, Mound Prairie, County Roads G And H,
Brinkman Ridge, Irish Hill, North Side Of La Crosse and South Side
Of La Crosse.
This includes Interstate 90 in Wisconsin between mile markers 1 and
18.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4362 9147 4374 9155 4385 9131 4385 9129
4386 9128 4401 9096 4373 9091
TIME...MOT...LOC 1624Z 245DEG 26KT 4372 9140
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
Skow2 follow-up statements
801 WWUS53 KARX 071644 SVSARX Severe Weather Statement National Weather Service La Crosse WI 1144 AM CDT Sat Aug 7 2021 MNC055-WIC063-123-071715- /O.CON.KARX.SV.W.0065.000000T0000Z-210807T1715Z/ Houston MN-La Crosse WI-Vernon WI- 1144 AM CDT Sat Aug 7 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT FOR EAST CENTRAL HOUSTON...SOUTHEASTERN LA CROSSE AND NORTHWESTERN VERNON COUNTIES... At 1143 AM CDT, a severe thunderstorm was located near La Crosse, moving northeast at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... La Crosse, West Salem, Bangor, Brownsville, and Mount La Crosse. This includes Interstate 90 in Wisconsin between mile markers 12 and 18. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4366 9129 4378 9132 4396 9095 4373 9091 TIME...MOT...LOC 1643Z 245DEG 26KT 4378 9122 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ Skow
357
WWUS53 KARX 071651
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
1151 AM CDT Sat Aug 7 2021
MNC055-WIC063-123-071701-
/O.CAN.KARX.SV.W.0065.000000T0000Z-210807T1715Z/
Houston MN-La Crosse WI-Vernon WI-
1151 AM CDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HOUSTON...
SOUTHEASTERN LA CROSSE AND NORTHWESTERN VERNON COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However heavy rain is
still possible with this thunderstorm.
LAT...LON 4366 9129 4378 9132 4396 9095 4373 9091
TIME...MOT...LOC 1649Z 245DEG 26KT 4381 9114
$$
SkowThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 7:21 AM CDT | Special Weather Statement | ARX | Winona | 24 min |
| Aug 7, 10:29 AM CDT | Special Weather Statement | ARX | Olmsted | 31 min |
| Aug 7, 10:33 AM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted, Wabasha | 42 min |
| Aug 7, 11:14 AM CDT | Special Weather Statement | ARX | Wabasha | 31 min |
| Aug 7, 12:12 PM CDT | Special Weather Statement | ARX | Wabasha | 18 min |
| Aug 7, 12:23 PM CDT | Special Weather Statement | ARX | Olmsted | 37 min |
| Aug 7, 12:59 PM CDT | Areal Flood Advisory | ARX | Olmsted, Wabasha, Winona | 2 hr |
| Aug 7, 2:23 PM CDT | Areal Flood Advisory | ARX | Winona | 112 min |
| Aug 7, 3:07 PM CDT | Areal Flood Advisory | ARX | Houston | 74 min |
| Aug 7, 6:18 PM CDT | Flash Flood Watch | ARX | Fillmore, Houston, Olmsted, Wabasha, Winona | 35 hr |
| Aug 7, 6:26 AM CDT | Special Weather Statement | ARX | Buffalo | 34 min |
| Aug 7, 7:40 AM CDT | Special Weather Statement | ARX | La Crosse | 35 min |
| Aug 7, 9:17 AM CDT | Special Weather Statement | ARX | Juneau | 28 min |
| Aug 7, 10:12 AM CDT | Special Weather Statement | ARX | Adams | 33 min |
| Aug 7, 11:17 AM CDT | Special Weather Statement | ARX | Crawford | 28 min |
| Aug 7, 11:26 AM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland, Vernon | 21 min |
| Aug 7, 12:19 PM CDT | Special Weather Statement | ARX | Richland | 26 min |
| Aug 7, 1:17 PM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 58 min |
| Aug 7, 1:48 PM CDT | Special Weather Statement | ARX | La Crosse | 27 min |
| Aug 7, 2:14 PM CDT | Special Weather Statement | ARX | La Crosse | 31 min |
| Aug 7, 3:02 PM CDT | River Flood Warning | ARX | Monroe, Vernon | 21 days |
| Aug 7, 3:02 PM CDT | River Flood Warning | ARX | Vernon | 4 days |
| Aug 7, 3:02 PM CDT | River Flood Warning | ARX | Richland, Vernon | 4 days |
| Aug 7, 3:02 PM CDT | River Flood Warning | ARX | Richland, Vernon | 61 hr |
| Aug 7, 3:02 PM CDT | River Flood Warning | ARX | Buffalo, Trempealeau | 19 hr |
| Aug 7, 3:17 PM CDT | Special Weather Statement | ARX | Vernon | 73 min |
| Aug 7, 3:23 PM CDT | Flash Flood Warning | ARX | La Crosse, Monroe | 3 hr |
| Aug 7, 3:35 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 55 min |
| Aug 7, 3:52 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 38 min |
| Aug 7, 4:00 PM CDT | Tornado Warning | ARX | Crawford | 30 min |
| Aug 7, 4:05 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 40 min |
| Aug 7, 4:19 PM CDT | Tornado Warning | ARX | Crawford, Grant | 41 min |
| Aug 7, 4:27 PM CDT | Flash Flood Warning | ARX | Vernon | 3 hr |
| Aug 7, 4:56 PM CDT | Tornado Warning | ARX | Grant | 19 min |
| Aug 7, 5:53 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe, Vernon | 37 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2021Severe Thunderstorm Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.