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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 184

NWS STORM PREDICTION CENTER NORMAN OK

610 AM CDT TUE MAY 18 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       DEEP SOUTH TEXAS

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING FROM 610 AM UNTIL NOON 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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 95 MILES NORTH

NORTHWEST OF MCALLEN TEXAS TO 15 MILES SOUTHWEST OF BROWNSVILLE

TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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...MCS NOW NEAR LRD...WITH EMBEDDED SUSTAINED

STORMS/MARGINAL SUPERCELLS...EXPECTED TO MOVE SLOWLY ESE THROUGH

LATE MORNING.  NEW STORM DEVELOPMENT MAY OCCUR AHEAD OF MCS ALONG

STALLING W/E OUTFLOW BOUNDARY S OF CRP.  COMBINATION OF RICH

MOISTURE /PW AOA 1.75 IN/ AND MODEST WLY DEEP SHEAR/LOW LVL ESELY

FLOW SUGGEST POTENTIAL FOR OCCASIONAL DMGG WIND GUSTS AND SVR HAIL.



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 28025.





...CORFIDI

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