

000 

WWUS20 KWNS 010614

SEL0

SPC WW 010614

ARZ000-MOZ000-OKZ000-011200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 320

NWS STORM PREDICTION CENTER NORMAN OK

115 AM CDT FRI JUN 1 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       SOUTHWEST MISSOURI

       NORTHEAST OKLAHOMA



EFFECTIVE THIS FRIDAY MORNING FROM 115 AM UNTIL 700 AM CDT.



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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTH OF

MUSKOGEE OKLAHOMA TO 45 MILES EAST NORTHEAST OF CHANUTE KANSAS.

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.



OTHER WATCH INFORMATION...CONTINUE...WW 317...WW 318...WW 319...



DISCUSSION...LARGE MCS/MCC WILL LIKELY CONSOLIDATE ALONG COMMON

OUTFLOW BOUNDARY AND TURN A LITTLE SOUTH OF EAST OVERNIGHT ALONG

WELL DEFINED SURFACE THETA-E GRADIENT.  THIS WILL POSE A RISK OF

DAMAGING WINDS AND ISOLATED LARGE HAIL...ALONG WITH LOCALLY VERY

HEAVY RAINFALL...ACROSS THIS REGION OVERNIGHT.



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 500. MEAN STORM

MOTION VECTOR 29035.





...EVANS

