WATCHES: Tornado Watch Number 653

WWUS20 KWNS 102301
SEL3
SPC WW 102301
KSZ000-MOZ000-OKZ000-110600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 653
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CDT FRI SEP 10 2010

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

EASTERN KANSAS
WESTERN MISSOURI
NORTHERN OKLAHOMA

EFFECTIVE THIS FRIDAY AFTERNOON AND SATURDAY MORNING FROM 555 PM
UNTIL 100 AM CDT.

TORNADOES...HAIL TO 2 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHEAST OF
LEAVENWORTH KANSAS TO 30 MILES WEST SOUTHWEST OF BARTLESVILLE
OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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.

DISCUSSION...TSTMS EXPECTED TO FORM IN THE NEXT HOUR OR SO IN
PERHAPS TWO OR THREE AREAS OVER ERN KS/NRN OK. DEVELOPMENT WILL BE
IN RESPONSE TO CONTINUED LOW LVL HEATING/MOISTURE INFLOW...AND LOW
LVL CONFLUENCE WITHIN AND ALONG W SIDE OF MOIST WARM SECTOR.
INITIATION ALSO MAY BE AIDED BY WEAK IMPULSE MOVING ENE FROM OK/TX
PANHANDLE REGION PER VWP/WATER VAPOR. AT ANY RATE...DEGREE OF
SFC-BASED INSTABILITY /REF MCD 1813/...MODERATE DEEP DIRECTIONAL
SHEAR...AND WEAK LOW LVL LINEAR FORCING SUGGEST POTENTIAL FOR A FEW
DISCRETE SUPERCELLS. QUALITY OF LOW LVL MOISTURE...EXPECTED
NOCTURNAL INCREASE IN THE SSW LLJ...AND BACKED FLOW INVOF WNW-ESE
STNRY FRONT IN NE KS/WRN MO FURTHER SUGGEST POTENTIAL FOR
TORNADOES...IN ADDITION TO SVR WIND/HAIL...BEFORE STORMS MERGE INTO
AN MCS LATER THIS EVE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26025.

...CORFIDI

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