Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 21, NWS Twin Cities, MN

May 25, 2021Pepin County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 25, 2021, 3:42 PM CDT for Pepin County, Wisconsin. It was in force for 21 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 25, 2021, 3:42 PM CDT (20:42 UTC)
Expired: May 25, 2021, 4:03 PM CDT
In force: 21 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Pepin County, WI

The radar

The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 20:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 25, 2:53 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.7 hours before the alert went out and 320 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: 96 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

431 
WUUS53 KMPX 252042
SVRMPX
WIC091-252115-
/O.NEW.KMPX.SV.W.0021.210525T2042Z-210525T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
342 PM CDT Tue May 25 2021

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Western Pepin County in west central Wisconsin...

* Until 415 PM CDT.

* At 342 PM CDT, a severe thunderstorm was located over Pepin, or 6
  miles northwest of Wabasha, moving east at 45 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  western Pepin County, including the following locations...
  Arkansaw, Ella and Porcupine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4458 9203 4447 9206 4441 9209 4445 9223
      4450 9230 4452 9230 4455 9225 4454 9214
      4459 9214 4464 9202 4460 9197
TIME...MOT...LOC 2042Z 248DEG 38KT 4443 9215 

HAIL...1.50IN
WIND...60MPH
 
$$

Dye

2 follow-up statements

961 
WWUS53 KMPX 252054
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
354 PM CDT Tue May 25 2021

WIC091-252115-
/O.CON.KMPX.SV.W.0021.000000T0000Z-210525T2115Z/
Pepin WI-
354 PM CDT Tue May 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR SOUTHWESTERN PEPIN COUNTY...

At 354 PM CDT, a severe thunderstorm was located 8 miles northeast of
Wabasha, moving east at 45 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pepin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4445 9223 4450 9215 4453 9211 4452 9205
      4447 9206 4441 9209
TIME...MOT...LOC 2054Z 248DEG 38KT 4448 9198 

HAIL...1.25IN
WIND...60MPH
 
$$

Dye

593 
WWUS53 KMPX 252103
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
403 PM CDT Tue May 25 2021

WIC091-252113-
/O.CAN.KMPX.SV.W.0021.000000T0000Z-210525T2115Z/
Pepin WI-
403 PM CDT Tue May 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PEPIN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
west central Wisconsin.

LAT...LON 4445 9223 4450 9215 4453 9211 4452 9205
      4447 9206 4441 9209
TIME...MOT...LOC 2102Z 248DEG 38KT 4452 9185 

$$

Dye

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 2:59 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Saint Croix	31 min
May 25, 3:24 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Chippewa, Dunn, Rusk	25 min
May 25, 3:46 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Rusk	44 min
May 25, 4:44 PM CDT	Special Weather Statement	MPX	Chippewa	46 min
May 25, 4:49 PM CDT	Special Weather Statement	MPX	Eau Claire	41 min
May 25, 4:50 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	25 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.