WWUS20 KWNS 191830 SEL9 SPC WW 191830 OKZ000-TXZ000-200200- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 189 NWS STORM PREDICTION CENTER NORMAN OK 135 PM CDT TUE MAY 19 2015 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF SOUTHWEST AND SOUTH CENTRAL OKLAHOMA NORTHWEST TEXAS * EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 135 PM UNTIL 900 PM CDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...SCATTERED THUNDERSTORM DEVELOPMENT WILL CONTINUE THROUGH THE AFTERNOON IN A MOIST ENVIRONMENT ACROSS NW TX AND SW/S CENTRAL OK. ALONG A IMMEDIATELY S OF A SURFACE FRONT...ROTATING STORMS WILL BE POSSIBLE WITH THE RISK FOR A FEW TORNADOES...AS WELL AS ISOLATED LARGE HAIL/DAMAGING WINDS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST OF ALTUS OKLAHOMA TO 80 MILES EAST SOUTHEAST OF FORT SILL OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9). 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. && AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 25025. ...THOMPSON