797 WWUS9 KMKC 271754 SEL8 MKC WW 271754 TXZ000-LAZ000-280000- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 338 STORM PREDICTION CENTER NORMAN OK 1254 PM CDT TUE MAY 27 1997 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EAST TEXAS WESTERN LOUISIANA EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 115 PM UNTIL 700 PM CDT. TORNADOES...HAIL TO 3 1/2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 125 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST OF COLLEGE STATION TEXAS TO 40 MILES NORTH NORTHWEST OF SHREVEPORT LOUISIANA. 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 336...WW 337... DISCUSSION...VERY LARGE HAIL/LOCALLY DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE THIS AFTERNOON IN VERY UNSTABLE AIR MASS /CAPE TO 5000 J/KG/ OVER REGION. ANY TORNADOES WILL LIKELY BE CONFINED TO BOUNDARY INTERSECTIONS GIVEN COMPARATIVELY WEAK VERTICAL SHEAR. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 1/2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 27020. ;303,0980 325,0961 325,0915 303,0935; NNNN