Tornado Watch 360

Issued

Jun 7, 2007, 2:41 PM CDT (19:41 UTC)

Expired

Jun 8, 2007, 12:00 AM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

2.5 in

Strongest gust expected

70 kt

The Green Bay radar (KGRB), 46 km from the middle of the area, began a volume at 19:41 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.

Two or more tornadoes

90%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

60%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1039Jun 7, 2:20 PM CDT
• Mesoscale Discussion 1045Jun 7, 5:59 PM CDT
• Mesoscale Discussion 1049Jun 7, 9:23 PM CDT
• Mesoscale Discussion 1051Jun 7, 9:48 PM CDT

000
WWUS20 KWNS 071942
SEL0  
SPC WW 071942
ILZ000-MIZ000-WIZ000-LMZ000-LSZ000-080500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 360
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT THU JUN 7 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       MUCH OF NORTHERN ILLINOIS
       WESTERN PORTION OF UPPER MICHIGAN
       EASTERN WISCONSIN
       LAKE MICHIGAN
       LAKE SUPERIOR

EFFECTIVE THIS THURSDAY AFTERNOON FROM 240 PM UNTIL MIDNIGHT CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF MARQUETTE
MICHIGAN TO 45 MILES EAST SOUTHEAST OF MOLINE ILLINOIS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 357...WW 358...WW 359...

DISCUSSION...SEVERE THUNDERSTORMS...INCLUDING TORNADIC SUPERCELLS
HAVE DEVELOPED FROM WRN WI TO ERN IA.  VERY STRONG SHEAR PROFILES
AND INSTABILITY ARE IN PLACE ACROSS WATCH TO SUPPORT CONTINUED
INCREASING THREAT OF LONG LIVED DAMAGING TORNADIC SUPERCELLS
SPREADING RAPIDLY EWD.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24055.


...HALES

Tornado Watches in Wisconsin, 2007Tornado Watches in Illinois, 2007Tornado Watches in Michigan, 2007Every tornado watch in 2007

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.