Alert archive / Wisconsin / Tornado Warnings in 2022

Tornado Warning 9, NWS Twin Cities, MN

May 9, 2022Dunn County, Pepin County, Pierce County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at May 9, 2022, 7:08 PM CDT for Dunn County, Pepin County, Pierce County, Wisconsin. It was in force for 37 min. 2 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 9, 2022, 7:08 PM CDT (00:08 UTC)
Expired: May 9, 2022, 7:45 PM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Dunn County, WI, Pepin County, WI, Pierce County, WI

The radar

The La Crosse radar (KARX), 112 km from the middle of the area, began a volume at 00:11 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 9, 7:10 PM CDT	TORNADO	1 Se Stockholm, WI	UPDATES PREVIOUS TORNADO REPORT FROM STOCKHOLM. SPOTTER REPORTED TORNADO ON THE MISSISSIPPI RIVER SOUTH OF STOCKHOLM. THE TORNADO WAS ALSO ON VIDEO. ABOUT ONE DOZEN TREES WERE BROKEN AS IT MOVED UP THE BLUFFS EAST OF STOCKHOLM. ITS PATH LENGTH WAS 1.2 MILES. T
May 9, 7:10 PM CDT	TORNADO	Stockholm, WI	SPOTTER REPORTED TORNADO MOVED ACROSS RIVER SOUTH OF STOCKHOLM. TIME ESTIMATED VIA RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 9, 2:50 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.1 hours before the alert went out and 123 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: 923 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1801 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

684 
WFUS53 KMPX 100008
TORMPX
WIC033-091-093-100045-
/O.NEW.KMPX.TO.W.0009.220510T0008Z-220510T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
708 PM CDT Mon May 9 2022

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Northwestern Pepin County in west central Wisconsin...
  Southeastern Pierce County in west central Wisconsin...
  Southwestern Dunn County in west central Wisconsin...

* Until 745 PM CDT.
    
* At 708 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Stockholm, or 14 miles northwest of Wabasha,
  moving northeast at 50 mph.

  HAZARD...Tornado and golf ball size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur. Tree 
           damage is likely.

* This dangerous storm will be near...
  Plum City around 715 PM CDT.
  Durand around 725 PM CDT.

Other locations in the path of this tornadic thunderstorm include Eau
Galle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4459 9199 4458 9203 4457 9203 4446 9225
      4450 9230 4455 9232 4483 9204 4469 9180
TIME...MOT...LOC 0008Z 225DEG 44KT 4452 9224 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

PEM

2 follow-up statements

680 
WWUS53 KMPX 100026
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
726 PM CDT Mon May 9 2022

WIC033-091-093-100045-
/O.CON.KMPX.TO.W.0009.000000T0000Z-220510T0045Z/
Pepin WI-Pierce WI-Dunn WI-
726 PM CDT Mon May 9 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
NORTHWESTERN PEPIN...SOUTHEASTERN PIERCE AND SOUTH CENTRAL DUNN
COUNTIES...
    
At 726 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles southeast of Plum City, or 15 miles north of
Wabasha, moving northeast at 40 mph.

HAZARD...Tornado and golf ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur. Tree damage is 
         likely.

Locations impacted include...
  Durand and Eau Galle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4457 9230 4481 9200 4469 9180 4459 9199
      4458 9203 4457 9203 4446 9225 4450 9230
      4455 9232
TIME...MOT...LOC 0026Z 233DEG 33KT 4459 9208 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

PEM

546 
WWUS53 KMPX 100041
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
741 PM CDT Mon May 9 2022

WIC033-091-093-100051-
/O.EXP.KMPX.TO.W.0009.000000T0000Z-220510T0045Z/
Pepin WI-Pierce WI-Dunn WI-
741 PM CDT Mon May 9 2022

...THE TORNADO WARNING FOR NORTHWESTERN PEPIN...SOUTHEASTERN PIERCE
AND SOUTH CENTRAL DUNN COUNTIES WILL EXPIRE AT 745 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Minnesota...and west central Wisconsin.

Remember, a Severe Thunderstorm Warning still remains in effect for
Pepin and Dunn.

LAT...LON 4457 9230 4481 9200 4469 9180 4459 9199
      4458 9203 4457 9203 4446 9225 4450 9230
      4455 9232
TIME...MOT...LOC 0041Z 225DEG 44KT 4470 9193 

$$

PEM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Dunn, Eau Claire, Pepin, Pierce	23 min
May 9, 7:24 PM CDT	Tornado Warning	MPX	Dunn	36 min
May 9, 7:45 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	45 min
May 9, 7:46 PM CDT	Tornado Warning Tornado observed	MPX	Chippewa, Dunn	18 min
May 9, 8:06 PM CDT	Special Weather Statement	MPX	Rusk	24 min
May 9, 8:08 PM CDT	Special Weather Statement	MPX	Chippewa	37 min
May 9, 8:11 PM CDT	Special Weather Statement	MPX	Eau Claire	34 min
May 9, 8:23 PM CDT	Tornado Warning	MPX	Eau Claire	37 min
May 9, 8:59 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	31 min

Nearby

Tornado Warnings in Wisconsin, 2022 Every tornado warning in 2022 Tornadoes in 2022

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.