Tornado Watch 445

Issued

Jun 4, 2008, 2:06 AM CDT (07:06 UTC)

Expired

Jun 4, 2008, 7:21 AM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

80 kt

The St Louis radar (KLSX), 76 km from the middle of the area, began a volume at 07:09 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

40%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1194Jun 3, 11:34 PM CDT
• Mesoscale Discussion 1195Jun 4, 1:29 AM CDT
• Mesoscale Discussion 1197Jun 4, 6:09 AM CDT

000
WWUS20 KWNS 040705
SEL5  
SPC WW 040705
ILZ000-INZ000-KYZ000-MOZ000-041400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 445
NWS STORM PREDICTION CENTER NORMAN OK
200 AM CDT WED JUN 4 2008

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

       SOUTHERN AND CENTRAL ILLINOIS
       SOUTHWESTERN INDIANA
       WESTERN KENTUCKY
       SOUTHEASTERN AND EXTREME EAST-CENTRAL MISSOURI

EFFECTIVE THIS WEDNESDAY MORNING FROM 200 AM UNTIL 900 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 90 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 115 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST SOUTHWEST OF
SAINT LOUIS MISSOURI TO 55 MILES SOUTHEAST OF MATTOON ILLINOIS. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 439. WATCH NUMBER 439 WILL NOT BE IN EFFECT AFTER
200 AM CDT. CONTINUE...WW 441...WW 442...WW 443...WW 444...

DISCUSSION...FORCED ASCENT ALONG OUTFLOWS FROM EXISTING MO COMPLEXES
MAY CONTRIBUTE TO ADDITIONAL SVR DEVELOPMENT EWD ACROSS WW
AREA...PER MESOSCALE DISCUSSION 1195.  PREDOMINANT THREAT WILL BE
DAMAGING WIND...ALTHOUGH LOW-LEVEL AND DEEP-LAYER SHEARS SUPPORT
TORNADO POTENTIAL...PARTICULARLY INVOF BOUNDARY INTERSECTIONS AND
WITHIN EMBEDDED MESOCIRCULATIONS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 80 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 27035.


...EDWARDS/CORFIDI

Tornado Watches in Illinois, 2008Tornado Watches in Missouri, 2008Tornado Watches in Kentucky, 2008Every tornado watch in 2008

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.