

000 

WWUS20 KWNS 232210

SEL2

SPC WW 232210

OKZ000-TXZ000-240600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 342

NWS STORM PREDICTION CENTER NORMAN OK

510 PM CDT FRI MAY 23 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN OKLAHOMA AND EASTERN PARTS OF THE OKLAHOMA PANHANDLE

       EASTERN PARTS OF THE TEXAS PANHANDLE



EFFECTIVE THIS FRIDAY AFTERNOON AND SATURDAY MORNING FROM 510 PM

UNTIL 100 AM CDT.



TORNADOES...HAIL TO 2.5 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 EAST AND WEST OF A LINE FROM 50 MILES SOUTHWEST OF CLINTON

OKLAHOMA TO 50 MILES NORTH OF GAGE OKLAHOMA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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 340...WW 341...



DISCUSSION...SCTD TSTMS/SUPERCELLS MAY FORM THIS EVENING ON DRY LINE

CONFLUENCE ZONE EXTENDING S INTO WW FROM WRN KS.  ANY SUCH

DEVELOPMENT WILL BE FOSTERED BY COMBINATION OF SFC HEATING AND

GLANCING INFLUENCE OF UPPER IMPULSE ROTATING NE ACROSS NE NM/ERN CO.

ALTHOUGH LARGE HAIL AND LOCALLY DMGG WIND SHOULD BE THE MAIN

THREATS...GIVEN QUALITY OF MOISTURE INFLOW/LOW-LEVEL

INSTABILITY...AND LIKELIHOOD FOR FAIRLY DISCRETE STORM

MODE...POTENTIAL WILL ALSO EXIST FOR TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 23030.





...CORFIDI

