SEL0
SPC WW 302109
ARZ000-MSZ000-TNZ000-310500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 640
NWS STORM PREDICTION CENTER NORMAN OK
410 PM CDT THU JUL 30 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF NORTHEAST ARKANSAS
MUCH OF NORTHERN MISSISSIPPI
WESTERN AND PARTS OF MIDDLE TENNESSEE
EFFECTIVE THIS THURSDAY AFTERNOON FROM 410 PM UNTIL MIDNIGHT 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF
OXFORD MISSISSIPPI TO 80 MILES NORTHEAST OF JACKSON TENNESSEE.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).
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 639...
DISCUSSION...SEVERAL ROTATING THUNDERSTORMS HAVE DEVELOPED VICINITY
MS RIVER AND WILL BE MOVING INTO A VERY MOIST AND FAVORABLY SHEARED
AIR MASS. SUPERCELLS INCLUDING TORNADOES ARE LIKELY TO DEVELOP EWD
ACROSS THE WATCH THROUGH THE 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 24035.
...HALES
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