WATCHES: Severe Thunderstorm Watch Number 700

WWUS20 KWNS 021958
SEL0
SPC WW 021958
KSZ000-MOZ000-OKZ000-030300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 700
NWS STORM PREDICTION CENTER NORMAN OK
300 PM CDT TUE OCT 2 2007

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

SOUTHEASTERN KANSAS
SOUTHWEST INTO CENTRAL MISSOURI
NORTH CENTRAL AND NORTHEASTERN OKLAHOMA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
1000 PM CDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF
COLUMBIA MISSOURI TO 50 MILES WEST SOUTHWEST OF TULSA OKLAHOMA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...THUNDERSTORMS WILL INCREASE WITHIN ERN AND SRN PORTION
OF PRE-FRONTAL CONVECTION WHICH HAS BEEN SUSTAINED OVER SERN KS INTO
WRN/CENTRAL MO AND NRN OK THIS AFTERNOON...WITH FURTHER DEVELOPMENT
POSSIBLE ALONG STRONG SURFACE COLD FRONT MOVING SEWD INTO THE WATCH
THIS EVENING. STRONG HEATING WITHIN AN UNSEASONABLY MOIST BOUNDARY
LAYER WILL SUPPORT AXIS OF MODERATE INSTABILITY FOR SEVERAL MORE
HOURS. GIVEN EFFECTIVE BULK SHEAR FROM 35-45 KT...SUPERCELLS AND
SMALL LINES/BOW ECHOES CAN BE EXPECTED AS STORMS MOVE ENEWD ACROSS
WW THROUGH THE EVENING. DAMAGING WINDS AND ISOLATED LARGE HAIL WILL
BE PRIMARY SEVERE THREATS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24030.

..EVANS

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@PO.UIUC.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.