Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 15, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 15, 2021, 7:59 PM CDT for Winona County, Minnesota. It was in force for 19 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
- May 15, 2021, 7:59 PM CDT (00:59 UTC)
- Expired
- May 15, 2021, 8:18 PM CDT
- In force
- 19 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Winona County, MN
The radar
The La Crosse radar (KARX), 65 km from the middle of the area, began a volume at 01:02 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
Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 158 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
- 69 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 2040 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
569
WUUS53 KARX 160059
SVRARX
MNC169-160145-
/O.NEW.KARX.SV.W.0015.210516T0059Z-210516T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
759 PM CDT Sat May 15 2021
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Northwestern Winona County in southeastern Minnesota...
* Until 845 PM CDT.
* At 758 PM CDT, a severe thunderstorm was between Beaver and
Minneiska, or 12 miles south of Alma, moving south at 20 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
Altura around 815 PM CDT.
Rollingstone around 820 PM CDT.
Stockton around 835 PM CDT.
Lewiston around 840 PM CDT.
Other locations impacted by this severe thunderstorm include
Whitewater State Park, Elba, Beaver, Whitman, County Roads 28 And 31,
Minnesota City and Lazy D Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4419 9186 4418 9183 4416 9182 4413 9174
4401 9162 4397 9203 4414 9208 4419 9208
TIME...MOT...LOC 0058Z 338DEG 17KT 4416 9195
HAIL...1.00IN
WIND...<50MPH
$$
DAS1 follow-up statement
842
WWUS53 KARX 160118
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
818 PM CDT Sat May 15 2021
MNC169-160128-
/O.CAN.KARX.SV.W.0015.000000T0000Z-210516T0145Z/
Winona MN-
818 PM CDT Sat May 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WINONA COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail is
still possible with this thunderstorm.
LAT...LON 4419 9186 4418 9183 4416 9182 4413 9174
4401 9162 4397 9203 4414 9208 4419 9208
TIME...MOT...LOC 0115Z 338DEG 17KT 4407 9190
$$
DASThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 7:23 PM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 52 min |
| May 15, 8:23 PM CDT | Special Weather Statement | ARX | Winona | 52 min |
Nearby
Severe 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.