WATCHES: Severe Thunderstorm Watch Number 20

WWUS20 KWNS 011833
SEL0
SPC WW 011833
ARZ000-LAZ000-OKZ000-TXZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 20
NWS STORM PREDICTION CENTER NORMAN OK
1235 PM CST WED FEB 1 2012

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

CENTRAL AND SOUTHERN ARKANSAS
NORTHERN LOUISIANA
EXTREME SOUTHEAST OKLAHOMA
NORTHEAST TEXAS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL
800 PM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES SOUTHWEST
OF DE QUEEN ARKANSAS TO 50 MILES EAST NORTHEAST OF PINE BLUFF
ARKANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...A CLUSTER OF THUNDERSTORMS OVER SOUTHEAST OK WILL
SPREAD EASTWARD INTO AR...WHILE NEW STORMS POTENTIALLY DEVELOPING
SOUTHWARD INTO NORTHEAST TX. STEEP MID LEVEL LAPSE RATES AND
MODERATE CAPE VALUES WILL PROMOTE THE RISK OF A FEW INTENSE CELLS
CAPABLE OF LARGE HAIL AND GUSTY WINDS.

AVIATION...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 400. MEAN STORM
MOTION VECTOR 27035.

...HART

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