SEL9
SPC WW 312045
ARZ000-MOZ000-OKZ000-010400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 149
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT MON MAR 31 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN AND WESTERN ARKANSAS
SOUTHERN MISSOURI
EASTERN OKLAHOMA
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 345 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 APPROXIMATELY ALONG AND 50 STATUTE
MILES EITHER SIDE OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
MCALESTER OKLAHOMA TO 60 MILES NORTHEAST OF WEST PLAINS MISSOURI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).
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 146...WW 147...WW 148...
DISCUSSION...LINE OF INTENSE THUNDERSTORMS...INCLUDING EMBEDDED
SUPERCELLS AND BOW ECHOES...IS DEVELOPING SOUTHEASTWARD INTO
SOUTHERN MO/NORTHWEST AR/EASTERN OK. MODERATE INSTABILITY AND VERY
STRONG VERTICAL SHEAR PROFILES WILL MAINTAIN A RISK OF LARGE
HAIL...DAMAGING WINDS...AND A FEW TORNADOES THROUGH THE EVENING
HOURS. PARAMETERS APPEAR FAVORABLE FOR A RISK OF ISOLATED STRONG
TORNADOES OVER WESTERN AR AND EASTERN 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 24030.
..HART
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