Alert archive / Wisconsin / Tornado Warnings in 2024

Tornado Warning 13, NWS Milwaukee, WI

April 27, 2024Waukesha County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Apr 27, 2024, 10:33 PM CDT for Waukesha County, Wisconsin. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 27, 2024, 10:33 PM CDT (03:33 UTC)
Expired
Apr 27, 2024, 10:43 PM CDT
In force
10 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 32 km from the middle of the area, began a volume at 03:34 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 27, 6:47 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.6 hours before the alert went out and 169 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, Green Bay/Straub, WI at 00:00Z on 2024-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2024-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1684 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

677 
WFUS53 KMKX 280333
TORMKX
WIC133-280400-
/O.NEW.KMKX.TO.W.0013.240428T0333Z-240428T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
1033 PM CDT Sat Apr 27 2024

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  East central Waukesha County in southeastern Wisconsin...

* Until 1100 PM CDT.

* At 1033 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near New Berlin, moving east at 25 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...
  Waukesha, New Berlin, and Brookfield.

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 4293 8820 4298 8822 4303 8807 4293 8807
TIME...MOT...LOC 0333Z 255DEG 23KT 4295 8819 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

CMILLER
2 follow-up statements
520 
WWUS53 KMKX 280341
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1041 PM CDT Sat Apr 27 2024

WIC133-280400-
/O.CON.KMKX.TO.W.0013.000000T0000Z-240428T0400Z/
Waukesha WI-
1041 PM CDT Sat Apr 27 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR EAST
CENTRAL WAUKESHA COUNTY...

At 1041 PM CDT, a severe thunderstorm capable of producing a tornado
was located over New Berlin, moving east at 25 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...
New Berlin and Brookfield.

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 4293 8812 4301 8814 4303 8807 4293 8807
TIME...MOT...LOC 0341Z 255DEG 23KT 4296 8812 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

HALBACH
714 
WWUS53 KMKX 280343 RRA
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1043 PM CDT Sat Apr 27 2024

WIC133-280353-
/O.CAN.KMKX.TO.W.0013.000000T0000Z-240428T0400Z/
Waukesha WI-
1043 PM CDT Sat Apr 27 2024

...THE TORNADO WARNING FOR EAST CENTRAL WAUKESHA COUNTY IS
CANCELLED...

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 midnight CDT for
southeastern Wisconsin.

LAT...LON 4293 8812 4301 8814 4303 8807 4293 8807
TIME...MOT...LOC 0341Z 255DEG 23KT 4296 8810 

$$

HALBACH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 7:06 PM CDTSpecial Weather StatementMKXSheboygan39 min
Apr 27, 7:10 PM CDTSpecial Weather StatementMKXSauk35 min
Apr 27, 7:17 PM CDTSevere Thunderstorm WarningMKXDodge58 min
Apr 27, 7:22 PM CDTSevere Thunderstorm WarningMKXRock24 min
Apr 27, 7:39 PM CDTSpecial Weather StatementMKXGreen36 min
Apr 27, 8:04 PM CDTSevere Thunderstorm WarningMKXDane26 min
Apr 27, 8:10 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac, Washington28 min
Apr 27, 8:14 PM CDTSevere Thunderstorm WarningMKXLafayette21 min
Apr 27, 8:22 PM CDTSevere Thunderstorm WarningMKXDane9 min
Apr 27, 8:35 PM CDTSpecial Weather StatementMKXDane, Green, Iowa, Lafayette, Rock55 min
Apr 27, 9:49 PM CDTSpecial Weather StatementMKXWalworth, Waukesha26 min
Apr 27, 10:01 PM CDTSevere Thunderstorm WarningMKXJefferson, Kenosha, Milwaukee, Racine, Walworth, Waukesha74 min
Apr 27, 10:20 PM CDTSpecial Marine WarningMKX2 hr
Apr 27, 10:24 PM CDTTornado WarningMKXRacine, Waukesha18 min
Apr 28, 2:45 PM CDTMarine Dense Fog AdvisoryMKX9 hr

Nearby

Tornado Warnings in Wisconsin, 2024Every tornado warning in 2024Tornadoes in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.