Alert archive / Wisconsin / Tornado Warnings in 2020

Tornado Warning 5, NWS Milwaukee, WI

June 20, 2020Ozaukee County, Washington County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jun 20, 2020, 5:06 PM CDT for Ozaukee County, Washington County, Wisconsin. It was in force for 21 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: Jun 20, 2020, 5:06 PM CDT (22:06 UTC)
Expired: Jun 20, 2020, 5:27 PM CDT
In force: 21 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Ozaukee County, WI, Washington County, WI

The radar

The Milwaukee radar (KMKX), 57 km from the middle of the area, began a volume at 22:07 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
Jun 20, 5:08 PM CDT	FUNNEL CLOUD	3 Ne Jackson, WI	VIDEO OF FUNNEL CLOUD RELAYED BY BROADCAST MEDIA. INDIVIDUAL WAS LOOKING TO THE NORTH FROM CEDAR CREEK ROAD AND JACKSON DRIVE IN JACKSON, WI.

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

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.1 hours before the alert went out and 125 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: 103 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1063 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

717 
WFUS53 KMKX 202206
TORMKX
WIC089-131-202245-
/O.NEW.KMKX.TO.W.0005.200620T2206Z-200620T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
506 PM CDT Sat Jun 20 2020

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  West central Ozaukee County in southeastern Wisconsin...
  East central Washington County in southeastern Wisconsin...

* Until 545 PM CDT.
    
* At 506 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Jackson, moving northeast at 15 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.

* This dangerous storm will be near...
  Newburg around 535 PM CDT.
  Saukville around 540 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 4330 8811 4332 8817 4346 8810 4341 8794
TIME...MOT...LOC 2206Z 214DEG 13KT 4333 8811 

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

$$

WAGNER

2 follow-up statements

531 
WWUS53 KMKX 202219
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
519 PM CDT Sat Jun 20 2020

WIC089-202228-
/O.CAN.KMKX.TO.W.0005.000000T0000Z-200620T2245Z/
Ozaukee WI-
519 PM CDT Sat Jun 20 2020

...THE TORNADO WARNING FOR WEST CENTRAL OZAUKEE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4337 8807 4338 8812 4346 8810 4345 8805
      4339 8804
TIME...MOT...LOC 2218Z 214DEG 13KT 4337 8807 

$$

WIC131-202245-
/O.CON.KMKX.TO.W.0005.000000T0000Z-200620T2245Z/
Washington WI-
519 PM CDT Sat Jun 20 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHEASTERN WASHINGTON COUNTY...
    
At 518 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Newburg, or near Jackson, moving northeast at 15
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.

This dangerous storm will be near...
  Newburg around 535 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 4337 8807 4338 8812 4346 8810 4345 8805
      4339 8804
TIME...MOT...LOC 2218Z 214DEG 13KT 4337 8807 

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

$$

WAGNER

096 
WWUS53 KMKX 202227
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
527 PM CDT Sat Jun 20 2020

WIC131-202236-
/O.CAN.KMKX.TO.W.0005.000000T0000Z-200620T2245Z/
Washington WI-
527 PM CDT Sat Jun 20 2020

...THE TORNADO WARNING FOR NORTHEASTERN WASHINGTON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
Washington, Ozaukee, Sheboygan, and Fond Du Lac!

LAT...LON 4337 8807 4338 8812 4346 8810 4345 8805
      4339 8804
TIME...MOT...LOC 2223Z 214DEG 13KT 4340 8805 

$$

WAGNER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 11:30 AM CDT	Special Weather Statement	MKX	Milwaukee, Racine	45 min
Jun 20, 12:10 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee	26 min
Jun 20, 12:14 PM CDT	Special Marine Warning	MKX		63 min
Jun 20, 12:43 PM CDT	Special Weather Statement	MKX	Ozaukee	47 min
Jun 20, 12:59 PM CDT	Special Marine Warning	MKX		54 min
Jun 20, 4:46 PM CDT	Special Weather Statement	MKX	Iowa	44 min
Jun 20, 4:52 PM CDT	Special Weather Statement	MKX	Fond du Lac	23 min
Jun 20, 5:03 PM CDT	Special Weather Statement	MKX	Washington	42 min
Jun 20, 5:17 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Ozaukee, Sheboygan, Washington	28 min
Jun 20, 5:25 PM CDT	Special Weather Statement	MKX	Green, Lafayette	50 min
Jun 20, 5:44 PM CDT	Special Weather Statement	MKX	Ozaukee	31 min
Jun 20, 5:59 PM CDT	Special Marine Warning	MKX		61 min

Nearby

Tornado Warnings in Wisconsin, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.