SEL4
SPC WW 181110
TXZ000-CWZ000-181700-
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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