Alert archive / Wisconsin / Tornado Warnings in 2021

Tornado Warning 6, NWS Milwaukee, WI

July 29, 20214 counties in Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jul 29, 2021, 1:31 AM CDT for 4 counties in Wisconsin. It was in force for 44 min. 5 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: Jul 29, 2021, 1:31 AM CDT (06:31 UTC)
Expired: Jul 29, 2021, 2:15 AM CDT
In force: 44 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Milwaukee County, WI, Racine County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 47 km from the middle of the area, began a volume at 06:32 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
Jul 29, 1:32 AM CDT	TSTM WND DMG	3 E Wales, WI	REPORTS OF MULTIPLE TREES SNAPPED AND LAYING IN THE ROADWAY OFF ROAD DT AND HIGHWAY 18. TIME ESTIMATED FROM RADAR.
Jul 29, 1:32 AM CDT	TORNADO	2 Ene Wales, WI	NWS STORM SURVEY HAS CONFIRMED AN EF-0 TORNADO EAST OF THE VILLAGE OF WALES. THIS TORNADO PRODUCED AN AREA OF TREE DAMAGE BEGINNING NORTH OF HIGHWAY 18 AND ENDING AROUND ROAD DT. PATH LENGTH IS ESTIMATED TO BE 2.4 MILES LONG WITH PEAK WIND SPEED AROUND 85 MPH.
Jul 29, 1:34 AM CDT	TSTM WND DMG	Pewaukee, WI	MULTIPLE TREES AND LARGE BRANCHES DOWN. TIME ESTIMATED FROM RADAR.
Jul 29, 1:40 AM CDT	TSTM WND DMG	1 S Mukwonago, WI	TREE LIMBS DOWN, TRANSFORMER EXPLODED BEHIND VILLAGE OF MUKWONAGO POLICE DEPARTMENT.
Jul 29, 1:40 AM CDT	TORNADO	4 Ese Wales, WI	...UPDATED TO EF1 RATING AND TO INCLUDE PATH LENGTH INFO...NWS STORM SURVEY HAS CONFIRMED A TORNADO WITH A PRELIMINARY DAMAGE RATING OF EF1 WSW OF WAUKESHA, OR ESE OF WALES IN WAUKESHA COUNTY. DAMAGE STRETCHES FROM HWY D AND TOWNLINE RD SOUTH OF HWY 18. PATH L

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
Jul 28, 7:17 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 6.5 hours before the alert went out and 181 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: 593 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

271 
WFUS53 KMKX 290631
TORMKX
WIC079-101-127-133-290715-
/O.NEW.KMKX.TO.W.0006.210729T0631Z-210729T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
131 AM CDT Thu Jul 29 2021

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Milwaukee County in southeastern Wisconsin...
  Northeastern Walworth County in southeastern Wisconsin...
  Racine County in southeastern Wisconsin...
  Waukesha County in southeastern Wisconsin...

* Until 215 AM CDT.

* At 130 AM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located
  along a line extending from near Hartland to near North Prairie to
  near Whitewater, moving southeast at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation. Has a history of producing 
           tornadoes.

  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...
  Milwaukee, Racine, Waukesha, West Allis, Wauwatosa, New Berlin,
  Brookfield, Greenfield, Oak Creek, Mount Pleasant, Muskego, South
  Milwaukee, Cudahy, Whitefish Bay, Greendale, Pewaukee, St. Francis,
  Hartland, Hales Corners and Mukwonago.

People attending The Waukesha Kennel Club Dog Show, and The Racine
County Fair in Union Grove should seek safe shelter immediately!

This includes the following Locations Milwaukee County Sports
Complex, Milkman Stadium, Southridge Mall, Boerner Botanical Gardens,
General Mitchell International Airport, Froedert & the Medical
College, Fiserv Forum, Mayfair Mall, Pewaukee Lake, Ottawa Lake
Recreation Area, and Pinewoods Campground.
 
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.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4276 8777 4271 8777 4267 8781 4267 8802
      4266 8828 4284 8854 4287 8854 4311 8844
      4311 8790 4307 8787 4302 8790 4296 8785
      4288 8785 4284 8783 4278 8775
TIME...MOT...LOC 0630Z 302DEG 44KT 4305 8832 4288 8845 4279 8866 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

WAGNER

3 follow-up statements

620 
WWUS53 KMKX 290644
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
144 AM CDT Thu Jul 29 2021

WIC079-101-127-133-290715-
/O.CON.KMKX.TO.W.0006.000000T0000Z-210729T0715Z/
Milwaukee WI-Walworth WI-Racine WI-Waukesha WI-
144 AM CDT Thu Jul 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR
MILWAUKEE...NORTHEASTERN WALWORTH...RACINE AND WAUKESHA COUNTIES...
        
At 142 AM CDT, tornado producing storms were located along a line
extending from near Waukesha to Potter Lake to near Elkhorn, moving
southeast at 50 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado west of Waukesha.

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...
Milwaukee, Racine, Waukesha, West Allis, Wauwatosa, New Berlin,
Brookfield, Greenfield, Oak Creek, Mount Pleasant, Muskego, South
Milwaukee, Cudahy, Whitefish Bay, Greendale, Pewaukee, St. Francis,
Hartland, Hales Corners and Mukwonago.

People attending The Waukesha Kennel Club Dog Show, and The Racine
County Fair in Union Grove should seek safe shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4276 8777 4271 8777 4267 8781 4267 8802
      4266 8828 4283 8845 4311 8844 4311 8790
      4307 8787 4302 8790 4296 8785 4288 8785
      4284 8783 4278 8775
TIME...MOT...LOC 0642Z 302DEG 44KT 4299 8819 4282 8832 4273 8853 

TORNADO...OBSERVED
HAIL...<.75IN

$$

WAGNER

559 
WWUS53 KMKX 290700
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
200 AM CDT Thu Jul 29 2021

WIC127-290710-
/O.CAN.KMKX.TO.W.0006.000000T0000Z-210729T0715Z/
Walworth WI-
200 AM CDT Thu Jul 29 2021

...THE TORNADO WARNING FOR NORTHEASTERN WALWORTH COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4276 8777 4271 8777 4267 8781 4267 8819
      4302 8813 4302 8790 4296 8785 4288 8785
      4284 8783 4278 8775
TIME...MOT...LOC 0700Z 302DEG 44KT 4288 8796 4271 8809 4262 8830 

$$

WIC079-101-133-290715-
/O.CON.KMKX.TO.W.0006.000000T0000Z-210729T0715Z/
Milwaukee WI-Racine WI-Waukesha WI-
200 AM CDT Thu Jul 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR SOUTHERN
MILWAUKEE...RACINE AND SOUTHEASTERN WAUKESHA COUNTIES...

At 200 AM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located along a
line extending from near Oak Creek to near Eagle Lake to Bohners
Lake, moving southeast at 50 mph.

HAZARD...Tornado.

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...
Milwaukee, Racine, West Allis, New Berlin, Greenfield, Oak Creek,
Mount Pleasant, Muskego, South Milwaukee, Cudahy, Greendale, St.
Francis, Hales Corners, Sturtevant, Union Grove, West Milwaukee,
Franklin, Wind Lake, Raymond and Yorkville.

People attending The Racine County Fair in Union Grove should seek
safe shelter immediately!

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.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4276 8777 4271 8777 4267 8781 4267 8819
      4302 8813 4302 8790 4296 8785 4288 8785
      4284 8783 4278 8775
TIME...MOT...LOC 0700Z 302DEG 44KT 4288 8796 4271 8809 4262 8830 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

WAGNER

754 
WWUS53 KMKX 290706
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
206 AM CDT Thu Jul 29 2021

WIC079-101-133-290715-
/O.EXP.KMKX.TO.W.0006.000000T0000Z-210729T0715Z/
Milwaukee WI-Racine WI-Waukesha WI-
206 AM CDT Thu Jul 29 2021

...THE TORNADO WARNING FOR SOUTHERN MILWAUKEE...RACINE AND
SOUTHEASTERN WAUKESHA COUNTIES WILL EXPIRE AT 215 AM CDT...
            
The storms which prompted the warning have weakened and no longer 
appear capable of producing a tornado. Therefore, the warning will 
be allowed to expire.  However gusty winds are still possible with 
these thunderstorms.

LAT...LON 4276 8777 4271 8777 4267 8781 4267 8819
      4302 8813 4302 8790 4296 8785 4288 8785
      4284 8783 4278 8775
TIME...MOT...LOC 0705Z 270DEG 44KT 4287 8788 4270 8801 4261 8822 

$$

WAGNER

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 11:18 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Green Lake, Marquette	72 min
Jul 28, 11:41 PM CDT	Tornado Warning	MKX	Fond du Lac	20 min
Jul 28, 11:48 PM CDT	Special Weather Statement	MKX	Sauk	42 min
Jul 28, 11:55 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	65 min
Jul 29, 12:22 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	53 min
Jul 29, 12:26 AM CDT	Tornado Warning	MKX	Columbia, Dodge	31 min
Jul 29, 12:43 AM CDT	Tornado Warning	MKX	Columbia, Dane, Dodge, Jefferson	32 min
Jul 29, 12:45 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	45 min
Jul 29, 12:51 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Iowa, Sauk	39 min
Jul 29, 12:57 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	48 min
Jul 29, 1:07 AM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	38 min
Jul 29, 1:08 AM CDT	Tornado Warning	MKX	Jefferson, Waukesha	37 min
Jul 29, 1:17 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson, Kenosha, Milwaukee, Racine, Rock and 2 more	67 min
Jul 29, 1:24 AM CDT	Special Marine Warning	MKX		96 min
Jul 29, 1:36 AM CDT	Tornado Warning	MKX	Rock	24 min
Jul 29, 1:51 AM CDT	Special Weather Statement	MKX	Green, Lafayette	24 min
Jul 29, 4:06 AM CDT	Small Craft Advisory	MKX		33 hr
Jul 29, 2:02 PM CDT	Beach Hazards Statement	MKX	Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan	29 hr

Nearby

Tornado Warnings in Wisconsin, 2021 Every tornado warning in 2021 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.