

293 

WWUS20 KWNS 240759

SEL0

SPC WW 240759

ARZ000-241400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 90

NWS STORM PREDICTION CENTER NORMAN OK

300 AM CDT SAT APR 24 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND CENTRAL ARKANSAS



EFFECTIVE THIS SATURDAY MORNING FROM 300 AM UNTIL 900 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES EAST NORTHEAST OF

PINE BLUFF ARKANSAS TO 45 MILES NORTHWEST OF EL DORADO ARKANSAS.

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 83...WW 86...WW 87...WW

88...WW 89...



DISCUSSION...A FAST MOVING BOW ECHO OVER NORTHEAST TX MAY MAINTAIN

INTENSITY AND TRACK INTO SOUTHERN AR IN THE NEXT COUPLE OF

HOURS...WITH THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS.  AHEAD OF

THE BOW...SCATTERED THUNDERSTORMS ARE INTENSIFYING RAPIDLY IN VERY

MOIST AND MODERATELY UNSTABLE AIRMASS.  THESE STORMS WILL POSE A

THREAT OF LARGE HAIL...DAMAGING WINDS...AND TORNADOES IF THEY CAN

BECOME SURFACE-BASED.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24040.





...HART

