Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 10, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 2, 2021, 6:52 PM CDT for Monroe County, Vernon County, Wisconsin. It was in force for 38 min. 5 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
- May 2, 2021, 6:52 PM CDT (23:52 UTC)
- Expired
- May 2, 2021, 7:30 PM CDT
- In force
- 38 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Monroe County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 57 km from the middle of the area, began a volume at 23:51 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 |
|---|---|---|---|
| May 2, 7:00 PM CDT | HAIL 1 | Ontario, WI | PUBLIC REPORTED QUARTER SIZE HAIL VIA SOCIAL MEDIA. |
| May 2, 7:00 PM CDT | HAIL 1.25 | Ontario, WI | PUBLIC REPORTED HALF DOLLAR SIZE HAIL VIA BROADCAST MEDIA SOCIAL MEDIA PICTURE. |
| May 2, 7:00 PM CDT | HAIL 1.5 | Ontario, WI | PUBLIC MEASURED PING PONG BALL SIZE HAIL VIA SOCIAL MEDIA PICTURE. |
| May 2, 7:04 PM CDT | HAIL 1.5 | 2 E Ontario, WI | PUBLIC REPORTED PING PONG BALL SIZE HAIL VIA BROADCAST MEDIA SOCIAL MEDIA PICTURE. |
| May 2, 7:20 PM CDT | HAIL 1 | 1 Nw Kendall, WI | PUBLIC REPORTED QUARTER SIZE HAIL VIA BROADCAST MEDIA SOCIAL MEDIA PICTURE. |
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, 11.9 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
133 WUUS53 KARX 022352 SVRARX WIC081-123-030030- /O.NEW.KARX.SV.W.0010.210502T2352Z-210503T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service La Crosse WI 652 PM CDT Sun May 2 2021 The National Weather Service in La Crosse has issued a * Severe Thunderstorm Warning for... Northeastern Vernon County in southwestern Wisconsin... Southeastern Monroe County in west central Wisconsin... * Until 730 PM CDT. * At 652 PM CDT, a severe thunderstorm was located 12 miles east of Cashton, or 15 miles south of Tomah, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Hillsboro around 720 PM CDT. Other locations impacted by this severe thunderstorm include Rockton, Oil City, Wildcat Mountain State Park, Bartons Corners, Wilton, Clifton and Glendale. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4364 9062 4384 9062 4393 9031 4364 9031 TIME...MOT...LOC 2352Z 267DEG 16KT 4376 9054 HAIL...1.00IN WIND...<50MPH $$ Rieck
2 follow-up statements
053 WWUS53 KARX 030007 SVSARX Severe Weather Statement National Weather Service La Crosse WI 707 PM CDT Sun May 2 2021 WIC081-123-030030- /O.CON.KARX.SV.W.0010.000000T0000Z-210503T0030Z/ Vernon WI-Monroe WI- 707 PM CDT Sun May 2 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR NORTHEASTERN VERNON AND SOUTHEASTERN MONROE COUNTIES... At 707 PM CDT, a severe thunderstorm was located 8 miles west of Elroy, or 15 miles south of Tomah, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Hillsboro around 720 PM CDT. Other locations impacted by this severe thunderstorm include Rockton, Oil City, Wildcat Mountain State Park, Bartons Corners, Wilton, Clifton and Glendale. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4364 9062 4384 9062 4393 9031 4364 9031 TIME...MOT...LOC 0007Z 267DEG 16KT 4376 9045 HAIL...1.00IN WIND...<50MPH $$ Rieck
133
WWUS53 KARX 030025
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
725 PM CDT Sun May 2 2021
WIC081-123-030034-
/O.EXP.KARX.SV.W.0010.000000T0000Z-210503T0030Z/
Vernon WI-Monroe WI-
725 PM CDT Sun May 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN VERNON AND
SOUTHEASTERN MONROE COUNTIES WILL EXPIRE AT 730 PM CDT...
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 will be allowed to expire. However gusty
winds and locally heavy rain are still possible with other
storms.
LAT...LON 4364 9062 4384 9062 4393 9031 4364 9031
TIME...MOT...LOC 0024Z 267DEG 16KT 4376 9037
$$
RieckThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 4:56 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 34 min |
| May 2, 5:28 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 47 min |
| May 2, 5:44 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 40 min |
| May 2, 5:59 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Trempealeau | 29 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.