Alert archive / Wisconsin / Tornado Warnings in 2022

Tornado Warning 12, NWS Twin Cities, MN

May 9, 2022Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at May 9, 2022, 8:23 PM CDT for Eau Claire County, Wisconsin. It was in force for 37 min. 1 report 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, 8:23 PM CDT (01:23 UTC)
Expired: May 9, 2022, 9:00 PM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Eau Claire County, WI

The radar

The La Crosse radar (KARX), 93 km from the middle of the area, began a volume at 01:22 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, 8:25 PM CDT	FUNNEL CLOUD	7 Sse Altoona, WI	FUNNEL WAS HALF-WAY TO GROUND BEFORE STALLING.

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, 1.4 hours before the alert went out and 198 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.

318 
WFUS53 KMPX 100123
TORMPX
WIC035-100200-
/O.NEW.KMPX.TO.W.0012.220510T0123Z-220510T0200Z/

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

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Southeastern Eau Claire County in west central Wisconsin...

* Until 900 PM CDT.
    
* At 822 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Fall Creek, or 13 miles southeast of Eau Claire,
  moving east at 60 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...
  Augusta around 835 PM CDT.

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 4460 9095 4463 9145 4471 9145 4480 9092
      4460 9092
TIME...MOT...LOC 0122Z 261DEG 53KT 4469 9132 

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

$$

PEM

2 follow-up statements

784 
WWUS53 KMPX 100145
SVSMPX

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

WIC035-100200-
/O.CON.KMPX.TO.W.0012.000000T0000Z-220510T0200Z/
Eau Claire WI-
845 PM CDT Mon May 9 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN EAU CLAIRE COUNTY...
    
At 845 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles northeast of Fairchild, or 17 miles northwest of
Neillsville, moving east at 60 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Eau Claire County, including the following locations...
Lake Eau Claire County Park.

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 4466 9119 4476 9118 4480 9092 4462 9092
TIME...MOT...LOC 0145Z 261DEG 53KT 4474 9084 

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

$$

ETA

360 
WWUS53 KMPX 100147 CCA
SVSMPX

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

WIC035-100200-
/O.COR.KMPX.TO.W.0012.000000T0000Z-220510T0200Z/
Eau Claire WI-
847 PM CDT Mon May 9 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN EAU CLAIRE COUNTY...
    
At 847 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Augusta, or 18 miles southeast of Eau Claire, moving
east at 30 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...
Augusta and Lake Eau Claire County Park. 

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 4466 9119 4476 9118 4480 9092 4462 9092
TIME...MOT...LOC 0145Z 263DEG 25KT 4474 9084 

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

$$

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, 7:24 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, 8:59 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.