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054 

WWUS20 KWNS 192120

SEL6

SPC WW 192120

ARZ000-OKZ000-200500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 86

NWS STORM PREDICTION CENTER NORMAN OK

420 PM CDT MON MAR 19 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       EASTERN OKLAHOMA



EFFECTIVE THIS MONDAY AFTERNOON FROM 420 PM UNTIL MIDNIGHT CDT.



HAIL TO 1.5 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 50

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH

SOUTHWEST OF DURANT OKLAHOMA TO 35 MILES NORTH NORTHEAST OF

FAYETTEVILLE ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 85...



DISCUSSION...INTENSE THUNDERSTORMS OVER NORTH TX WILL TRACK

NORTHEASTWARD ALONG SURFACE BOUNDARY INTO EASTERN OK AND EVENTUALLY

INTO NORTHWEST AR THIS EVENING.  STORMS THUS FAR HAVE BEEN SLIGHTLY

ON THE COOL SIDE OF THE BOUNDARY...WITH BOW/LEWP STRUCTURES CAPABLE

OF DAMAGING WINDS AND HAIL.  CONDITIONS WILL BE CLOSELY MONITORED

FOR ACTIVITY FORMING IN THE WARM SECTOR...WHERE STRONG LOW LEVEL

SHEAR WOULD REQUIRE AN UPGRADE TO TORNADO WATCH.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 23035.





...HART

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