Alert archive / Wisconsin / Tornado Warnings in 2009

Tornado Warning 10, NWS Milwaukee, WI

June 23, 2009Rock County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jun 23, 2009, 8:00 PM CDT for Rock County, Wisconsin. It was in force for 30 min. 2 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
Jun 23, 2009, 8:00 PM CDT (01:00 UTC)
Expired
Jun 23, 2009, 8:30 PM CDT
In force
30 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon

County Rock County, WI

The radar

The Milwaukee radar (KMKX), 42 km from the middle of the area, began a volume at 01:00 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
Jun 23, 8:10 PM CDTTORNADO 05 Se Edgerton, WIA STORM SURVEY DETERMINED AN EF0 TORNADO TOUCHED DOWN NEAR CLEAR LAKE...OR 5 SE OF EDGERTON. A SCREEN WAS FLIPPED OVER A TRAILER. MINIMAL TREE AND POWER LINE DAMAGE WAS ALSO OBSERVED MAINLY TO THE SOUTHEAST OF THE LAKE.
Jun 23, 8:10 PM CDTTORNADO5 Se Edgerton, WITORNADO REPORTED ON THE GROUND.

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

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.0 hours before the alert went out and 179 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 00:00Z on 2009-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1824 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, Davenport, at 00:00Z on 2009-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.193958Sfc1 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
1824 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1743 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KMKX 240100
TORMKX
WIC105-240130-
/O.NEW.KMKX.TO.W.0010.090624T0100Z-090624T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
800 PM CDT TUE JUN 23 2009

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN

* UNTIL 830 PM CDT

* AT 759 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
  NEAR EDGERTON. A TORNADO MAY DEVELOP AT ANY TIME DOPPLER RADAR
  SHOWED THIS TORNADIC STORM MOVING SOUTHEAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  MILTON BY 830 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4272 8900 4280 8910 4285 8905 4285 8899
      4281 8887
TIME...MOT...LOC 0100Z 295DEG 8KT 4281 8903

$$

BORGHOFF
3 follow-up statements
000 
WWUS53 KMKX 240110
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
810 PM CDT TUE JUN 23 2009

WIC105-240130-
/O.CON.KMKX.TO.W.0010.000000T0000Z-090624T0130Z/
ROCK WI-
810 PM CDT TUE JUN 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR NORTHERN
ROCK COUNTY...

AT 807 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR MILTON...MOVING SOUTHEAST AT 10 MPH.

THE TORNADO WILL BE NEAR...
MILTON BY 820 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4273 8899 4280 8905 4283 8899 4281 8887
TIME...MOT...LOC 0111Z 294DEG 10KT 4279 8898

$$

BORGHOFF
000 
WWUS53 KMKX 240125
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
825 PM CDT TUE JUN 23 2009

WIC105-240130-
/O.CON.KMKX.TO.W.0010.000000T0000Z-090624T0130Z/
ROCK WI-
825 PM CDT TUE JUN 23 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR NORTHERN
ROCK COUNTY...

AT 800 PM CDT...THE JANESVILLE AIRPORT REPORTED A TORNADO NORTH OF 
THE AIRPORT...MOVING SOUTH. AT 820 PM...THE AIRPORT NOTED THE 
TORNADO HAD DISSIPATED. THE STORM CAPABLE OF PRODUCING A TORNADO WAS 
LOCATED NEAR MILTON...MOVING SOUTHEAST AT 10 MPH.

THE TORNADO WILL BE NEAR...
MILTON BY 825 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4273 8899 4280 8905 4283 8899 4281 8887
TIME...MOT...LOC 0122Z 322DEG 10KT 4278 8899

$$

BORGHOFF
000 
WWUS53 KMKX 240130
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
830 PM CDT TUE JUN 23 2009

WIC105-240139-
/O.EXP.KMKX.TO.W.0010.000000T0000Z-090624T0130Z/
ROCK WI-
830 PM CDT TUE JUN 23 2009

...THE TORNADO WARNING FOR NORTHERN ROCK COUNTY EXPIRES AT 830 PM
CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARES TO BE SEVERE.

LAT...LON 4273 8899 4280 8905 4283 8899 4281 8887
TIME...MOT...LOC 0129Z 322DEG 10KT 4276 8897

$$

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:21 AM CDTHeat AdvisoryMKXColumbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more15 hr

Nearby

Tornado Warnings in Wisconsin, 2009Every tornado warning in 2009Tornadoes in 2009

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.