SEL9
SPC WW 190842
OKZ000-TXZ000-191500-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 189
NWS STORM PREDICTION CENTER NORMAN OK
345 AM CDT WED MAY 19 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PARTS OF NORTHERN OKLAHOMA
PARTS OF NORTHERN TEXAS PANHANDLE
EFFECTIVE THIS WEDNESDAY MORNING FROM 345 AM UNTIL 1000 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 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 80 MILES WEST OF
GAGE OKLAHOMA TO 55 MILES NORTHEAST OF CHANDLER OKLAHOMA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU9).
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...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 188. WATCH NUMBER 188 WILL NOT BE IN EFFECT
AFTER 345 AM CDT.
DISCUSSION...SEVERAL SUPERCELLS CONTINUE ACROSS NRN TX PANHANDLE
INTO NWRN OK. WHILE STORMS APPEAR TO BE ELEVATED...LARGE HAIL
THREAT SHOULD CONTINUE AS 50-60KT LOW LEVEL JET PROVIDES BOTH
FAVORABLE SHEAR AND INFLUX OF MOISTURE/INSTABILITY.
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 27020.
...HALES
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