Tuesday, June 3, 2008

WATCHES: Tornado Watch Number 437

WWUS20 KWNS 032043
SEL7
SPC WW 032043
KSZ000-MOZ000-040400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 437
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT TUE JUN 3 2008

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

FAR EASTERN KANSAS
NORTHERN MISSOURI

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF
LEAVENWORTH KANSAS TO 55 MILES EAST SOUTHEAST OF KIRKSVILLE
MISSOURI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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 434...WW 435...WW 436...

DISCUSSION...THUNDERSTORM DEVELOPMENT APPEARS LIKELY DURING THE NEXT
1-3 HOURS ACROSS NRN MO AS CAP WEAKENS AND AIR MASS BECOMES VERY
UNSTABLE. AXIS OF STRONG SURFACE HEATING NOSING INTO NWRN MO MAY
PROVIDE INITIAL IMPETUS FOR DEVELOPMENT BY 5-6 PM...WITH
THUNDERSTORMS BECOMING MORE WIDESPREAD ACROSS WW EARLY THIS EVENING.
SHEAR WILL REMAIN QUITE FAVORABLE FOR SUPERCELLS...WITH EVENTUAL
EVOLUTION INTO MCS/LINEAR CONVECTIVE SYSTEM POSSIBLE LATER THIS
EVENING. LARGE HAIL...SOME OF WHICH COULD BE QUITE LARGE...IS
EXPECTED WITH THE STRONGER STORMS. LOW LEVEL SHEAR...ALTHOUGH
MODEST...WILL ALSO BE FAVORABLE FOR A THREAT OF ISOLATED TORNADOES.
WIND DAMAGE POTENTIAL MAY INCREASE WITH THESE STORMS SHOULD
ORGANIZATION INCREASE THROUGH THE MID TO LATE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26025.


...EVANS

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