

555 

WWUS20 KWNS 312028

SEL2

SPC WW 312028

OKZ000-010500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 262

NWS STORM PREDICTION CENTER NORMAN OK

330 PM CDT FRI MAY 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND NORTHEAST OKLAHOMA



* EFFECTIVE THIS FRIDAY AFTERNOON FROM 330 PM UNTIL MIDNIGHT CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* PRIMARY THREATS INCLUDE...

  SEVERAL INTENSE TORNADOES LIKELY

  NUMEROUS VERY LARGE HAIL EVENTS TO 4 INCHES IN DIAMETER LIKELY

  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH SEVERAL SIGNIFICANT

    GUSTS TO 80 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

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

BARTLESVILLE OKLAHOMA TO 30 MILES EAST OF WICHITA FALLS TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 260...WW 261...



DISCUSSION...AN EXTREMELY UNSTABLE AIR MASS HAS DEVELOPED ACROSS

MUCH OF CENTRAL/EASTERN OK THIS AFTERNOON.  THIS WILL LIKELY RESULT

IN RAPID DEVELOPMENT OF SEVERE THUNDERSTORMS THIS AFTERNOON AND

EVENING ALONG THE DRYLINE OVER WEST-CENTRAL OK...AND ALONG A WEAK

BOUNDARY EXTENDING NORTHEASTWARD INTO NORTHEAST OK.  DISCRETE

SUPERCELLS CAPABLE OF EXTREMELY LARGE HAIL AND DAMAGING TORNADOES

ARE POSSIBLE.  DAMAGING WINDS WILL BECOME AN INCREASING THREAT

THROUGH THE EVENING.



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

SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE

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

600. MEAN STORM MOTION VECTOR 26025.





...HART

