Alert archive / Wisconsin / Tornado Warnings in 2007

Tornado Warning 15, NWS Milwaukee, WI

August 6, 2007Rock County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Aug 6, 2007, 11:58 PM CDT for Rock County, Walworth County, Wisconsin. It was in force for 47 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
Aug 6, 2007, 11:58 PM CDT (04:58 UTC)
Expired
Aug 7, 2007, 12:45 AM CDT
In force
47 min
Issued by
NWS Milwaukee, WI
Area
Counties, with a storm outline in the text

Counties Rock County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 51 km from the middle of the area, began a volume at 04:58 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 6, 11:58 PM CDTTORNADO5 Ne Beloit, WIPOSSIBLE TORNADO AT SHOPIERE RD AND I94. LAW ENFORCEMENT IS RESPONDING.
Aug 7, 12:02 AM CDTTORNADO5 Ne Beloit, WIPUBLIC REPORT OF POSSIBLE TORNADO AT INTERSECTION OF SHOPIERE RD AND THE INTERSTATE. COUNTY LAW ENFORCEMENT IS RESPONDING.

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, 5.0 hours before the alert went out and 171 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 2007-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1142 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 2007-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
1142 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
1047 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMKX 070459
TORMKX
WIC105-127-070545-
/O.NEW.KMKX.TO.W.0015.070807T0458Z-070807T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1158 PM CDT MON AUG 6 2007

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN
  SOUTHWESTERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN

* UNTIL 1245 AM CDT

* AT 1154 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR 
JANESVILLE...AT SHOPIERE ROAD AND INTERSTATE 94...MOVING SOUTHEAST 
AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  CLINTON BY 1215 AM CDT...
  7 MILES SOUTHWEST OF DARIEN BY 1235 AM CDT...
  SHARON BY 1240 AM CDT...
  7 MILES SOUTHWEST OF WALWORTH AND 9 MILES SOUTHWEST OF
  FONTANA-ON-GENEVA LAKE BY 1245 AM 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 4274 8906 4259 8919 4228 8862 4251 8843

$$
COLLAR
3 follow-up statements
000 
WWUS53 KMKX 070509
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1207 AM CDT TUE AUG 7 2007

WIC105-127-070545-
/O.CON.KMKX.TO.W.0015.000000T0000Z-070807T0545Z/
ROCK-WALWORTH-
1207 AM CDT TUE AUG 7 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR
SOUTHWESTERN WALWORTH AND SOUTHEASTERN ROCK COUNTIES...

AT 1158 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR SHOPIERE ROAD 
AND INTERSTATE 90. THE STORM WITH THE POSSIBLE TORNADO WAS LOCATED 
NEAR TIFFANY...OR ABOUT 7 MILES NORTHEAST OF BELOIT...MOVING 
SOUTHEAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  ALLENS GROVE BY 1215 AM CDT...
  DARIEN BY 1225 AM CDT...
  SHARON BY 1230 AM CDT...
  WALWORTH...FONTANA-ON-GENEVA LAKE AND FONTANA BY 1240 AM 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 8908 4253 8915 4249 8872 4251 8843

$$

REM
000 
WWUS53 KMKX 070525
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1222 AM CDT TUE AUG 7 2007

WIC105-127-070545-
/O.CON.KMKX.TO.W.0015.000000T0000Z-070807T0545Z/
ROCK-WALWORTH-
1222 AM CDT TUE AUG 7 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT FOR
SOUTHWESTERN WALWORTH AND SOUTHEASTERN ROCK COUNTIES...

AT 1215 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO.  THIS 
TORNADO WAS LOCATED NEAR CLINTON...OR ABOUT 11 MILES SOUTHWEST OF 
DELAVAN LAKE...MOVING SOUTHEAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  SHARON BY 1230 AM CDT...
  WALWORTH...AND 7 MILES SOUTHWEST OF FONTANA BY 1240 AM CDT...

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO SAFE
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER
YOUR HEAD.

LAT...LON 4273 8908 4253 8915 4249 8872 4251 8843

$$

REM
000 
WWUS53 KMKX 070546
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1241 AM CDT TUE AUG 7 2007

WIC105-127-070551-
/O.EXP.KMKX.TO.W.0015.000000T0000Z-070807T0545Z/
ROCK-WALWORTH-
1245 AM CDT TUE AUG 7 2007

...THE TORNADO WARNING FOR SOUTHWESTERN WALWORTH AND SOUTHEASTERN
ROCK COUNTIES EXPIRED AT 1245 AM CDT...

AT 1242 AM CDT...DOPPLER RADAR INDICATED THE SEVERE THUNDERSTORM 
WITH THE POSSIBLE TORNADO HAD WEAKENED AND WAS MOVING INTO NORTHERN 
ILLINOIS. THEREFORE THE TORNADO WARNING WAS ALLOWED TO EXPIRE AT 
1245 AM CDT.

OTHER THUNDERSTORMS ARE DEVELOPING ALONG A NEW GLARUS TO WHITEWATER 
LINE...AND ARE CAPABLE OF PRODUCING HEAVY DOWNPOURS OF RAIN...WITH 
RATES OF 1 TO 2 INCHES PER HOUR. 

STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR FURTHER 
INFORMATION...STATEMENTS OR WARNINGS. 

LAT...LON 4273 8908 4253 8915 4249 8872 4251 8843

$$

REM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 11:14 PM CDTSevere Thunderstorm WarningMKXRock61 min
Aug 6, 11:31 PM CDTAreal Flood AdvisoryMKXRock, Walworth8 hr
Aug 7, 2:01 AM CDTAreal Flood AdvisoryMKXGreen, Iowa, Kenosha, Lafayette, Racine5 hr
Aug 7, 9:29 AM CDTRiver Flood WarningMKXGreen, Rock4 days
Aug 7, 5:40 PM CDTRiver Flood WarningMKXRock11 hr

Nearby

Tornado Warnings in Wisconsin, 2007Every tornado warning in 2007Tornadoes in 2007

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.