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000 

WWUS20 KWNS 010734

SEL1

SPC WW 010734

ARZ000-KSZ000-MOZ000-OKZ000-011400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 41

NWS STORM PREDICTION CENTER NORMAN OK

135 AM CST THU MAR 1 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       EXTREME SOUTHEAST KANSAS

       SOUTHWEST MISSOURI

       EASTERN OKLAHOMA



EFFECTIVE THIS THURSDAY MORNING FROM 135 AM UNTIL 800 AM CST.



TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 85 MILES NORTH OF SPRINGFIELD

MISSOURI TO 60 MILES SOUTH SOUTHEAST OF MCALESTER OKLAHOMA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 36...TORNADO WATCH NUMBER 38. WATCH NUMBER 36 38

WILL NOT BE IN EFFECT AFTER 135 AM CST. CONTINUE...WW 37...WW

39...WW 40...



DISCUSSION...POWERFUL UPPER TROUGH AND STRENGTHENING COLD FRONT WILL

MOVE EAST INTO INCREASINGLY MOIST AND UNSTABLE WARM SECTOR FROM THE

RED RIVER NEWD ACROSS THE OZARKS THIS MORNING. IN ADDITION TO

INTENSIFYING FORCING FOR LARGE SCALE UPWARD MOTION...LOW THROUGH MID

LEVEL WIND FIELDS WILL STRENGTHEN CONSIDERABLY THROUGH THE EARLY

MORNING. THUS...ENVIRONMENT WILL BECOME CONDUCIVE TO SUPERCELLS AND

LINE SEGMENTS CAPABLE OF LARGE HAIL...HIGH WINDS...AND A COUPLE OF

TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 22045.





...CARBIN/HART

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