Alert archive / Wisconsin / Tornado Warnings in 2020

Tornado Warning 9, NWS Milwaukee, WI

August 10, 2020Kenosha County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Aug 10, 2020, 3:44 PM CDT for Kenosha County, Wisconsin. It was in force for 31 min. 6 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
Aug 10, 2020, 3:44 PM CDT (20:44 UTC)
Expired
Aug 10, 2020, 4:15 PM CDT
In force
31 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Kenosha County, WI

The radar

The Milwaukee radar (KMKX), 57 km from the middle of the area, began a volume at 20:44 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

TimeReportWhereRemark
Aug 10, 3:45 PM CDTTSTM WND DMG2 Ssw Camp Lake, WICORRECTS PREVIOUS FLOOD REPORT FROM 2 SSW CAMP LAKE. NUMEROUS TREES DOWN AND SNAPPED AT WILMOT AND 286TH. REPORT RELAYED VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
Aug 10, 3:45 PM CDTTORNADO2 Ssw Camp Lake, WIDAMAGE TO BUILDINGS AND TREES CONSISTENT WITH A LOW END EF-1 TORNADO OCCURRED IN NORTHERN ILLINOIS JUST SOUTH OF THE WISCONSIN STATE LINE. THIS TORNADO PROCEEDED NE INTO WISCONSIN TOWARDS CAMP LAKE WHERE MAINLY TREE DAMAGE WAS OBSERVED THAT IS CONSISTENT WITH
Aug 10, 3:47 PM CDTTSTM WND DMG1 Se Camp Lake, WITREE SNAPPED AT LOCATION. REPORT RELAYED VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
Aug 10, 3:47 PM CDTTSTM WND DMGCamp Lake, WIMULTIPLE REPORTS OF TREES AND WIRES DOWN AROUND THE CAMP LAKE AREA.
Aug 10, 3:52 PM CDTTSTM WND DMG1 E Powers Lake, WITREES DOWN AROUND THE INTERSECTION OF HWY Z AND HWY P IN POWERS LAKE.
Aug 10, 3:55 PM CDTTSTM WND GST 70Paddock Lake, WI

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.

IssuedProductOfficeLasted
Aug 10, 11:26 AM CDTSevere Thunderstorm Watch PDSSPC7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.7 hours before the alert went out and 223 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2020-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1683 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2020-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1683 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
894 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

651 
WFUS53 KMKX 102044
TORMKX
WIC059-102115-
/O.NEW.KMKX.TO.W.0009.200810T2044Z-200810T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
344 PM CDT Mon Aug 10 2020

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Kenosha County in southeastern Wisconsin...

* Until 415 PM CDT.
    
* At 344 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Channel Lake, or over Camp Lake, moving northeast
  at 40 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...
  Kenosha, Pleasant Prairie, Paddock Lake, Camp Lake, Wheatland,
  Silver Lake, Twin Lakes, Salem, Bristol, Paris, Brighton, Somers,
  Bassett and New Munster.

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 4254 8828 4267 8811 4266 8781 4249 8800
      4250 8820
TIME...MOT...LOC 2044Z 232DEG 35KT 4250 8816 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BOXELL
2 follow-up statements
470 
WWUS53 KMKX 102054
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
354 PM CDT Mon Aug 10 2020

WIC059-102115-
/O.CON.KMKX.TO.W.0009.000000T0000Z-200810T2115Z/
Kenosha WI-
354 PM CDT Mon Aug 10 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR CENTRAL
KENOSHA COUNTY...
    
At 354 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Paddock Lake, moving northeast at 40 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...
Kenosha, Pleasant Prairie, Paddock Lake, Camp Lake, Salem, Bristol,
Paris, Brighton and Somers.

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 4258 8815 4267 8811 4266 8781 4249 8800
      4255 8815
TIME...MOT...LOC 2054Z 232DEG 35KT 4256 8805 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BOXELL
454 
WWUS53 KMKX 102111
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
411 PM CDT Mon Aug 10 2020

WIC059-102120-
/O.EXP.KMKX.TO.W.0009.000000T0000Z-200810T2115Z/
Kenosha WI-
411 PM CDT Mon Aug 10 2020

...THE TORNADO WARNING FOR CENTRAL KENOSHA COUNTY WILL EXPIRE AT 415
PM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
southeastern Wisconsin.

LAT...LON 4258 8815 4267 8811 4266 8781 4249 8800
      4255 8815
TIME...MOT...LOC 2110Z 232DEG 35KT 4265 8789 

$$

BOXELL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 7:06 PM CDTSpecial Marine WarningMKX54 min
Aug 10, 8:02 AM CDTSevere Thunderstorm WarningMKXGreen Lake, Marquette43 min
Aug 10, 12:34 PM CDTSevere Thunderstorm WarningMKXIowa, Lafayette56 min
Aug 10, 1:23 PM CDTTornado WarningMKXGreen, Lafayette27 min
Aug 10, 1:26 PM CDTSevere Thunderstorm WarningMKXDane, Green, Iowa, Lafayette64 min
Aug 10, 2:26 PM CDTTornado WarningMKXGreen, Rock17 min
Aug 10, 2:29 PM CDTSevere Thunderstorm WarningMKXGreen, Rock, Walworth61 min
Aug 10, 2:35 PM CDTSpecial Marine WarningMKX115 min
Aug 10, 2:44 PM CDTSpecial Weather StatementMKXIowa, Lafayette46 min
Aug 10, 3:13 PM CDTAreal Flood AdvisoryMKXRock3 hr
Aug 10, 3:13 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine, Rock, Walworth47 min
Aug 10, 3:18 PM CDTSpecial Weather StatementMKXSheboygan27 min
Aug 10, 3:21 PM CDTSpecial Marine WarningMKX114 min
Aug 10, 3:26 PM CDTSpecial Weather StatementMKXFond du Lac64 min
Aug 10, 3:30 PM CDTSpecial Weather StatementMKXFond du Lac60 min
Aug 10, 3:37 PM CDTSpecial Weather StatementMKXRock38 min
Aug 10, 3:39 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine51 min
Aug 10, 3:42 PM CDTTornado WarningMKXRacine, Walworth16 min
Aug 10, 4:01 PM CDTSpecial Weather StatementMKXFond du Lac59 min
Aug 10, 4:10 PM CDTTornado WarningMKXRacine16 min
Aug 10, 4:21 PM CDTSevere Thunderstorm WarningMKXSheboygan39 min
Aug 10, 4:25 PM CDTSpecial Marine WarningMKX95 min
Aug 10, 4:25 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine50 min
Aug 10, 4:34 PM CDTAreal Flood AdvisoryMKXJefferson, Kenosha, Milwaukee, Racine, Rock, Walworth and 1 more3 hr
Aug 10, 5:24 PM CDTSpecial Marine WarningMKX41 min

Nearby

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