

267 

WWUS20 KWNS 171843

SEL9

SPC WW 171843

OKZ000-180100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 479

NWS STORM PREDICTION CENTER NORMAN OK

145 PM CDT SAT SEP 17 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  PARTS OF WESTERN AND CENTRAL OKLAHOMA



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 145 PM UNTIL

  800 PM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...A SMALL CLUSTER OF STORMS...SOME WITH SUPERCELL

STRUCTURES...WILL CONTINUE TO MOVE EASTWARD THROUGH THE AFTERNOON.

THE MORE INTENSE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL AND

DAMAGING WINDS...AND THE SEVERE RISK COULD REACH THE I-35

CORRIDOR/OKLAHOMA CITY METRO AREA BY AROUND 23Z.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 30

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF

CLINTON OKLAHOMA TO 30 MILES SOUTHEAST OF OKLAHOMA CITY OKLAHOMA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



AVIATION...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 500. MEAN STORM

MOTION VECTOR 27035.





...THOMPSON

