Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS La Crosse, WI

May 2, 2021Olmsted County, Winona County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at May 2, 2021, 5:10 PM CDT for Olmsted County, Winona County, Minnesota. It was in force for 50 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 2, 2021, 5:10 PM CDT (22:10 UTC)
Expired: May 2, 2021, 6:00 PM CDT
In force: 50 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Olmsted County, MN, Winona County, MN

The radar

The La Crosse radar (KARX), 75 km from the middle of the area, began a volume at 22:10 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 12:00Z, 10.2 hours before the alert went out and 151 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3075 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -80 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

686 
WUUS53 KARX 022210
SVRARX
MNC109-169-022300-
/O.NEW.KARX.SV.W.0005.210502T2210Z-210502T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
510 PM CDT Sun May 2 2021

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Western Winona County in southeastern Minnesota...
  Southeastern Olmsted County in southeastern Minnesota...

* Until 600 PM CDT.

* At 509 PM CDT, a severe thunderstorm was located over Dover, or 16
  miles east of Rochester, moving east at 25 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  St. Charles around 520 PM CDT.
  Altura around 540 PM CDT.

Other locations impacted by this severe thunderstorm include
Saratoga, Whitewater State Park, County Roads 9 And 10, County Roads
6 And 33, Elba, County Roads 28 And 31 and Utica.

This includes Interstate 90 in Minnesota between mile markers 226 and
241.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4411 9209 4411 9208 4412 9207 4417 9192
      4385 9189 4385 9216 4405 9225
TIME...MOT...LOC 2209Z 253DEG 20KT 4398 9215 

HAIL...1.00IN
WIND...<50MPH
 
$$

Rieck

3 follow-up statements

461 
WWUS53 KARX 022221
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
521 PM CDT Sun May 2 2021

MNC109-169-022300-
/O.CON.KARX.SV.W.0005.000000T0000Z-210502T2300Z/
Winona MN-Olmsted MN-
521 PM CDT Sun May 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR WESTERN WINONA AND SOUTHEASTERN OLMSTED COUNTIES...

At 521 PM CDT, a severe thunderstorm was located over St. Charles, or
19 miles west of Winona, moving east at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe storm will be near...
  Altura around 540 PM CDT.

Other locations impacted by this severe thunderstorm include
Saratoga, Whitewater State Park, County Roads 9 And 10, County Roads
6 And 33, Elba, County Roads 28 And 31 and Utica.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4411 9209 4411 9208 4412 9207 4417 9192
      4385 9189 4385 9216 4407 9216
TIME...MOT...LOC 2221Z 253DEG 20KT 4400 9206 

HAIL...1.00IN
WIND...<50MPH
 
$$

Rieck

237 
WWUS53 KARX 022236
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
536 PM CDT Sun May 2 2021

MNC109-022245-
/O.CAN.KARX.SV.W.0005.000000T0000Z-210502T2300Z/
Olmsted MN-
536 PM CDT Sun May 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OLMSTED COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled. 
Additional severe storms are possible. 

LAT...LON 4411 9208 4412 9207 4417 9192 4385 9189
      4385 9208
TIME...MOT...LOC 2235Z 253DEG 20KT 4402 9195 

$$

MNC169-022300-
/O.CON.KARX.SV.W.0005.000000T0000Z-210502T2300Z/
Winona MN-
536 PM CDT Sun May 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR WESTERN WINONA COUNTY...

At 535 PM CDT, a severe thunderstorm was located over Altura, or 14
miles west of Winona, moving east at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of
western Winona County, including the following locations... Saratoga,
Whitewater State Park, County Roads 6 And 33, Elba, County Roads 28
And 31, Utica and Lazy D Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4411 9208 4412 9207 4417 9192 4385 9189
      4385 9208
TIME...MOT...LOC 2235Z 253DEG 20KT 4402 9195 

HAIL...1.00IN
WIND...<50MPH
 
$$

Rieck

487 
WWUS53 KARX 022249
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
549 PM CDT Sun May 2 2021

MNC169-022300-
/O.CON.KARX.SV.W.0005.000000T0000Z-210502T2300Z/
Winona MN-
549 PM CDT Sun May 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHWESTERN WINONA COUNTY...

At 549 PM CDT, a severe thunderstorm was located near Lewiston, or 13
miles southwest of Winona, moving east at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
St. Charles, Altura, Saratoga, Fremont, Utica, Troy, County Roads 6
And 33 and Bethany.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4399 9208 4403 9200 4408 9191 4385 9189
      4385 9208
TIME...MOT...LOC 2249Z 249DEG 20KT 4394 9188 

HAIL...1.00IN
WIND...<50MPH
 
$$

Rieck

The 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	Winona	34 min
May 2, 5:16 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore	29 min
May 2, 5:44 PM CDT	Severe Thunderstorm Warning	ARX	Winona	40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every 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.