WATCHES: Tornado Watch Number 128

WWUS20 KWNS 020256
SEL8
SPC WW 020256
ARZ000-LAZ000-020900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 128
NWS STORM PREDICTION CENTER NORMAN OK
955 PM CDT SAT MAY 1 2010

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

CENTRAL ARKANSAS
NORTHERN LOUISIANA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 955 PM
UNTIL 400 AM 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES WEST NORTHWEST OF
BATESVILLE ARKANSAS TO 45 MILES SOUTHEAST OF SHREVEPORT
LOUISIANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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 125. WATCH NUMBER 125 WILL NOT BE IN EFFECT AFTER
955 PM CDT. CONTINUE...WW 126...WW 127...

DISCUSSION...BROKEN BAND OF SEVERE STORMS...SOME WITH SUPERCELL AND
SMALL BOW STRUCTURES...WILL CONTINUE ALONG AND IN ADVANCE OF THE
SLOW-MOVING COLD FRONT FROM E TX INTO WRN AR. MODERATE INSTABILITY
AND STRONG DEEP-LAYER SHEAR PERSIST ACROSS LA/AR...AND WILL REMAIN
SUPPORTIVE OF SUPERCELLS WITH LARGE HAIL AND DAMAGING WINDS. A FEW
TORNADOES WILL CONTINUE TO BE POSSIBLE OVERNIGHT GIVEN THE RICH
LOW-LEVEL MOISTURE AND SUFFICIENTLY STRONG LOW-LEVEL SHEAR.

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 23045.

...THOMPSON

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