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767 

WWUS20 KWNS 112217

SEL5

SPC WW 112217

ALZ000-ARZ000-LAZ000-MSZ000-120300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 375

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CDT MON JUN 11 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHWEST AND WEST CENTRAL ALABAMA

       EXTREME SOUTHEAST ARKANSAS

       NORTHEAST LOUISIANA

       CENTRAL MISSISSIPPI



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 520 PM UNTIL

1000 PM 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES SOUTHWEST

OF GREENVILLE MISSISSIPPI TO 40 MILES NORTHEAST OF TUSCALOOSA

ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 373...WW 374...



DISCUSSION...MCS WILL CONTINUE TO MOVE SEWD FROM AR/NRN MS TOWARD NW

AL AND CENTRAL MS/NE LA.  SURFACE TEMPERATURES NEAR 90 F AND

DEWPOINTS AOA 70 F WILL MAINTAIN STRONG INSTABILITY AND CONTINUED

DOWNSTREAM PROPAGATION OF THE STORMS ON A WELL-DEVELOPED COLD POOL.

SCATTERED DAMAGING WINDS AND MARGINALLY SEVERE HAIL WILL BE THE MAIN

THREATS THROUGH LATE EVENING.



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 550. MEAN STORM

MOTION VECTOR 33030.





...THOMPSON

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