

562 

WWUS20 KWNS 121243

SEL2

SPC WW 121243

ARZ000-121900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 142

NWS STORM PREDICTION CENTER NORMAN OK

745 AM CDT SUN APR 12 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN AND CENTRAL ARKANSAS



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 745 AM UNTIL 200

PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EITHER SIDE OF A LINE FROM 35 MILES SOUTHWEST OF

RUSSELLVILLE ARKANSAS TO 25 MILES EAST NORTHEAST OF MONTICELLO

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...SCTD ELEVATED STORMS...INCLUDING SOME SUSTAINED

STRUCTURES/POSSIBLE SUPERCELLS...EXPECTED TO PERSIST ALONG 850 WARM

FRONT AS FEATURE MOVES NWD IN ENVIRONMENT OF INCREASING

ASCENT/ELEVATED MOISTURE INFLOW.  MAIN SVR THREAT SHOULD BE LARGE

HAIL.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 21040.





...CORFIDI

