

000 

WWUS20 KWNS 051842

SEL5

SPC WW 051842

ARZ000-MOZ000-060200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 35

NWS STORM PREDICTION CENTER NORMAN OK

1240 PM CST TUE FEB 5 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WEST CENTRAL AND NORTHWEST ARKANSAS

       SOUTH CENTRAL MISSOURI



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL

800 PM CST.



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 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES EAST OF WEST PLAINS

MISSOURI TO 25 MILES WEST NORTHWEST OF FAYETTEVILLE ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 34...



DISCUSSION...A STRONG MID LEVEL TROUGH OVER W TX WILL EJECT NEWD

OVER N TX AND OK THROUGH THIS EVENING...WHILE AN ASSOCIATED SURFACE

LOW DEVELOPS NEWD FROM SRN OK TO SRN MO ALONG A STATIONARY FRONT.

THE LOW LEVELS HAVE BEEN DESTABILIZING ACROSS NW AR/SRN MO IN THE

WAKE OF MORNING CONVECTION...AND IT APPEARS THAT STORMS NOW FORMING

NEAR THE FRONT WILL INTENSIFY AND SPREAD NEWD THROUGH THE AFTERNOON

IN ADVANCE OF THE SURFACE LOW.  VERTICAL SHEAR WILL BE FAVORABLE FOR

SUPERCELLS WITH TORNADOES...WHILE LARGE HAIL WILL BE POSSIBLE WITH

STEEP MID LEVEL LAPSE RATES ON THE NRN EDGE OF AN ELEVATED MIXED

LAYER PLUME.  STORM INTERACTIONS/MERGERS COULD ALSO LEAD TO BOW ECHO

FORMATION LATER THIS AFTERNOON/EVENING INVOF THE SURFACE

FRONT...WITH AN ATTENDANT THREAT FOR DAMAGING WINDS.



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

450. MEAN STORM MOTION VECTOR 24050.





...THOMPSON

