URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 118 STORM PREDICTION CENTER NORMAN OK 210 PM CDT TUE APR 15 2003 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST KANSAS WESTERN OKLAHOMA TEXAS PANHANDLE EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 210 PM UNTIL 700 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF GARDEN CITY KANSAS TO 70 MILES WEST SOUTHWEST OF CLINTON OKLAHOMA. 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. DISCUSSION...HIGH BASED CONVECTION OVER NORTHEAST NM IS FORECAST TO TRACK NORTHEASTWARD ACROSS THE TX PANHANDLE AND INTO SOUTHWEST KS/NORTHWEST OK THIS AFTERNOON. THESE STORMS...ALONG WITH OTHER DEVELOPMENT...ARE EXPECTED TO INTENSIFY AND BECOME SUPERCELLULAR. FAVORABLE VERTICAL SHEAR PROFILES AND MODERATE INSTABILITY SUGGEST THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS IN STRONGEST CELLS. THREAT OF ISOLATED TORNADOES WILL ALSO INCREASE BY LATE AFTERNOON AS STORMS MOVE INTO GREATER LOW LEVEL MOISTURE IN EASTERN HALF OF WW AREA. AVIATION...TORNADOES AND 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 24035. ...HART URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 120 STORM PREDICTION CENTER NORMAN OK 500 PM CDT TUE APR 15 2003 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST OKLAHOMA WESTERN AND NORTHWESTERN TEXAS EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1100 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF SAN ANGELO TEXAS TO 30 MILES NORTHWEST OF ALTUS OKLAHOMA. 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 118...WW 119... DISCUSSION...IMPRESSIVE PRESSURE FALLS ARE OCCURING OVER WRN TX AHEAD OF APPROACHING UPPER TROUGH AT 21Z...INDICATING SIGNIFICANT LARGE SCALE ASCENT WILL OVERSPREAD WW THROUGH THE EVENING. ACTIVITY WILL LIKELY INCREASE IN COVERAGE/INTENSITY OVER THE NEXT HOUR OR SO AND SPREAD QUICKLY EWD IN THE FORM OF SUPERCELLS AND SMALL SCALE BOW ECHOES. WITH BACKED LOW LEVEL FLOW...THE THREAT FOR ISOLATED TORNADOES WILL ALSO INCREASE...ESPECIALLY INTO NWRN TX/SWRN OK. AVIATION...TORNADOES AND 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 25040. ...EVANS URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 123 STORM PREDICTION CENTER NORMAN OK 630 PM CDT TUE APR 15 2003 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTH CENTRAL KANSAS WESTERN AND NORTHWESTERN OKLAHOMA EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 630 PM UNTIL 1100 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTH SOUTHWEST OF CLINTON OKLAHOMA TO 45 MILES NORTHWEST OF HUTCHINSON KANSAS. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 118. WATCH NUMBER 118 WILL NOT BE IN EFFECT AFTER 630 PM CDT. CONTINUE...WW 119...WW 120...WW 121...WW 122... DISCUSSION...ISOLATED TORNADIC SUPERCELLS SHOULD CONTINUE ENEWD AT OVER 40 KT ACROSS WRN/NWRN OK AND POSSIBLY SRN KS THIS EVENING WHERE STRONG PRESSURE FALLS AND MODERATE INSTABILITY ARE IN PLACE. ACTIVITY MAY EVOLVE INTO A MORE LINEAR STRUCTURE AND INCREASE THE THREAT OF DAMAGING WINDS LATER THIS EVENING. AVIATION...TORNADOES AND 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 24045. ...EVANS URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 124 STORM PREDICTION CENTER NORMAN OK 900 PM CDT TUE APR 15 2003 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN OKLAHOMA NORTH CENTRAL TEXAS EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 900 PM UNTIL 200 AM CDT. TORNADOES...HAIL TO 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 55 STATUTE MILES EAST AND WEST OF A LINE FROM 95 MILES SOUTH SOUTHWEST OF ARDMORE OKLAHOMA TO 60 MILES NORTHEAST OF OKLAHOMA CITY OKLAHOMA. 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 119...WW 120...WW 121...WW 122...WW 123... DISCUSSION...INSTABILITY REMAINS MARGINAL EWD INTO CENTRAL OK/N- CENTRAL TX...HOWEVER VERY STRONG LARGE SCALE ASCENT /EVIDENCED BY LARGE PRESSURE FALLS THIS EVENING/ WILL OVERSPREAD THE AREA LATE THIS EVENING AND EARLY WEDNESDAY MORNING. GIVEN THE EXTREME SHEAR EVIDENT ON AREA PROFILERS/VWPS...AND THE MAINTENANCE OF DISCRETE SUPERCELLS WITHIN BROKEN SQUALL LINE NOW MOVING OVER SWRN OK/NWRN TX...THE THREAT OF ISOLATED TORNADOES MAY SPREAD ACROSS WW DURING THE NEXT SEVERAL HOURS. HAIL AND ISOLATED DAMAGING WINDS WILL ALSO ACCOMPANY THESE STORMS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 24050. ...EVANS URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 125 STORM PREDICTION CENTER NORMAN OK 1120 PM CDT TUE APR 15 2003 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHEAST KANSAS EAST CENTRAL AND SOUTHEAST OKLAHOMA EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1120 PM UNTIL 500 AM CDT. HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF CHANUTE KANSAS TO 30 MILES EAST SOUTHEAST OF MCALESTER OKLAHOMA. 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. OTHER WATCH INFORMATION... CONTINUE...WW 122...WW 124... DISCUSSION...INSTABILITY REMAINS VERY MARGINAL ACROSS ERN KS AND ERN OK...HOWEVER IMPRESSIVE LARGE SCALE ASCENT CONTINUES TO SUPPORT A BROKEN LINE OF THUNDERSTORMS MOVING RAPIDLY NEWD ACROSS CENTRAL OK. EXIT REGION OF 100 KT 500 MB SPEED MAX WILL OVERSPREAD WW TONIGHT...AND SHOULD SUPPORT DEEP MOIST CONVECTION INTO NERN OK/SERN KS. GIVEN THE EXTREME LOW LEVEL SHEAR...ISOLATED WIND DAMAGE AND/OR SUPERCELLS ARE EXPECTED. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 23045. ...EVANS