

526 

WWUS20 KWNS 151925

SEL9

SPC WW 151925

OKZ000-TXZ000-160300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 29

NWS STORM PREDICTION CENTER NORMAN OK

220 PM CDT SAT MAR 15 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN OKLAHOMA

  NORTHERN AND CENTRAL TEXAS



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 220 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES SOUTH

SOUTHEAST OF BROWNWOOD TEXAS TO 55 MILES NORTHEAST OF ARDMORE

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.



&&



DISCUSSION...TSTMS NOW FORMING/STRENGTHENING IN WRN N TX AND OVER

WRN PARTS OF THE HILL COUNTRY SHOULD FURTHER STRENGTHEN AND INCREASE

IN ORGANIZATION/SUSTENANCE AS ASSOCIATED W TX UPR IMPULSE ASSUMES

MORE OF A NEUTRAL TILT AND CONTINUES ENE TOWARD/ACROSS WW REGION.

AREA VWP DATA SHOW ASSOCIATED INCREASE IN LOW/MID-LVL WIND FIELD

THAT SUGGESTS POTENTIAL FOR THE EVENTUAL DEVELOPMENT OF A FEW

EMBEDDED SUPERCELLS CAPABLE OF SVR HAIL AND PERHAPS DMGG WIND. THE

ACTIVITY MAY MERGE INTO A SMALL MCS THAT CONTINUES MAINLY ENE INTO

NE TX/S CNTRL AND SE OK THROUGH MID-EVE.



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 450. MEAN STORM

MOTION VECTOR 23035.





...CORFIDI

