

000 

WWUS20 KWNS 012316

SEL5

SPC WW 012316

OKZ000-020600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 245

NWS STORM PREDICTION CENTER NORMAN OK

615 PM CDT THU MAY 1 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF CENTRAL AND PARTS OF EASTERN OKLAHOMA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 615 PM

UNTIL 100 AM CDT.



TORNADOES...HAIL TO 3.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF

BARTLESVILLE OKLAHOMA TO 40 MILES WEST SOUTHWEST OF ARDMORE

OKLAHOMA.  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...CONTINUE...WW 243...WW 244...



DISCUSSION...AIR MASS E OF DRY LINE VERY TO EXTREMELY UNSTABLE AND

WEAKLY CAPPED.  STORMS WILL RAPIDLY DEVELOP VICINITY OF DRY LINE AS

STRONG WIND MAX ROTATES EWD ACROSS CENTRAL PLAINS AND ENHANCES BOTH

SHEAR AND ASCENT.  SUPERCELLS ARE LIKELY WITH VERY LARGE HAIL AND

TORNADIC POTENTIAL.



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

SURFACE AND ALOFT TO 3.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 22035.





...HALES

