Alert archive / Wisconsin / Tornado Warnings in 2022

Tornado Warning 10, NWS Twin Cities, MN

May 9, 2022Dunn County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at May 9, 2022, 7:24 PM CDT for Dunn County, Wisconsin. It was in force for 36 min. 4 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, 7:24 PM CDT (00:24 UTC)
Expired: May 9, 2022, 8:00 PM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Dunn County, WI

The radar

The La Crosse radar (KARX), 133 km from the middle of the area, began a volume at 00:25 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, 7:25 PM CDT	TORNADO	1 E Knapp, WI	DOZENS OF TREES WERE BROKEN, INCLUDING AT A HOME EAST OF KNAPP. THE PATH LENGTH WAS 0.7 MILES. THE TORNADO WAS RATED EF0 WITH ESTIMATED MAXIMUM WINDS OF 80 MPH.
May 9, 7:32 PM CDT	TORNADO	3 Ese Cedar Falls, WI	UPDATES PREVIOUS TORNADO REPORT FROM 4 E CEDAR FALLS. VIDEO ON TWITTER. NWS SURVEY CONFIRMED TORNADIC DAMAGE JUST NORTH OF I-94 NEAR RUSK, WI. THE DAMAGE CONTINUED TO THE NORTHEAST THROUGH WHITETAIL GOLF COURSE. AN IRRIGATION SYSTEM WAS TIPPED OVER, AN OUTBUIL
May 9, 7:40 PM CDT	TORNADO	4 E Cedar Falls, WI	VIDEO ON TWITTER. LOCATION ESTIMATED BASED ON RADAR.
May 9, 7:45 PM CDT	TSTM WND DMG	4 S Colfax, WI	LARGE PINE TREE DOWN.

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, 0.4 hours before the alert went out and 137 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.

929 
WFUS53 KMPX 100024
TORMPX
WIC033-100100-
/O.NEW.KMPX.TO.W.0010.220510T0024Z-220510T0100Z/

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

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Central Dunn County in west central Wisconsin...

* Until 800 PM CDT.
    
* At 724 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Knapp, or 6 miles west of Menomonie, moving east
  at 45 mph.

  HAZARD...Tornado and quarter 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...
  Menomonie around 730 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Colfax.

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 4485 9206 4496 9210 4505 9165 4493 9164
      4490 9165
TIME...MOT...LOC 0024Z 255DEG 37KT 4492 9203 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

ETA

2 follow-up statements

482 
WWUS53 KMPX 100040
SVSMPX

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

WIC033-100100-
/O.CON.KMPX.TO.W.0010.000000T0000Z-220510T0100Z/
Dunn WI-
740 PM CDT Mon May 9 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR EAST
CENTRAL DUNN COUNTY...
    
At 740 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Colfax, or 6 miles northeast of Menomonie, moving
east at 45 mph.

HAZARD...Tornado and quarter 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...
  Colfax.

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 4491 9184 4501 9183 4505 9165 4493 9164
      4493 9169
TIME...MOT...LOC 0040Z 255DEG 37KT 4496 9181 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

ETA

498 
WWUS53 KMPX 100053
SVSMPX

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

WIC033-100103-
/O.EXP.KMPX.TO.W.0010.000000T0000Z-220510T0100Z/
Dunn WI-
753 PM CDT Mon May 9 2022

...THE TORNADO WARNING FOR EAST CENTRAL DUNN COUNTY WILL EXPIRE AT
800 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 4491 9184 4501 9183 4505 9165 4493 9164
      4493 9169
TIME...MOT...LOC 0053Z 255DEG 37KT 4499 9164 

$$

ETA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:08 PM CDT	Tornado Warning	MPX	Dunn, Pepin, Pierce	37 min
May 9, 7:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MPX	Dunn, Eau Claire, Pepin, Pierce	23 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.