631
WWUS20 KWNS 292228
SEL4
SPC WW 292228
ARZ000-300500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 784
NWS STORM PREDICTION CENTER NORMAN OK
525 PM CDT THU OCT 29 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN ARKANSAS
EFFECTIVE THIS THURSDAY AFTERNOON FROM 525 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 1.5 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 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF
RUSSELLVILLE ARKANSAS TO 20 MILES NORTH NORTHWEST OF FLIPPIN
ARKANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).
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 781...WW 782...WW 783...
DISCUSSION...STRONG STORMS CONTINUE TO DEVELOP AND MOVE RAPIDLY
NNEWD ALONG AND AHEAD OF COLD FRONT SHIFTING SLOWLY EWD ACROSS ERN
OK. SURFACE DEW POINTS ARE EXPECTED TO GRADUALLY SHIFT NWD AS A
WARM FRONT LIFTS INTO NRN AR THIS EVENING...INCREASING THE POTENTIAL
FOR SURFACE-BASED STORMS TO SPREAD INTO NRN AR. VERTICAL WIND
PROFILES CONTINUE TO EXHIBIT VERY STRONG LOW LEVEL SHEAR WITH 0-1 KM
SRH VALUES AOA 300-400 M2/S2...WITH POTENTIAL FOR TORNADIC
SUPERCELLS TO DEVELOP THROUGH THE EVENING HOURS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 20045.
...WEISS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page