

000 

WWUS20 KWNS 180010

SEL7

SPC WW 180010

OKZ000-TXZ000-180700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 127

NWS STORM PREDICTION CENTER NORMAN OK

710 PM CDT MON MAR 17 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN OKLAHOMA

       WESTERN NORTH TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 710 PM UNTIL

200 AM 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES SOUTH

SOUTHEAST OF WICHITA FALLS TEXAS TO 40 MILES EAST NORTHEAST OF

OKLAHOMA CITY OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 125...WW 126...



DISCUSSION...SCTD TSTMS/POSSIBLE SUPERCELLS EXPECTED TO CONTINUE

MOVING NNE ALONG AND W OF SHALLOW COLD FRONT MOVING S/SE ACROSS

REGION.  WHILE STRONGEST/DEEPEST LOW-LEVEL CONVERGENCE SHOULD REMAIN

CONFINED TO AREAS FARTHER S AND E /IN WWS 125 AND 126/...EXISTING

WEDGE OF MODERATELY UNSTABLE AIR AND LIFT PROVIDED BY

FRONT/ASSOCIATED SFC WAVE MAY SUPPORT ADDITIONAL STRONG/SVR STORMS

IN MODERATELY SHEARED ENVIRONMENT.



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 450. MEAN STORM

MOTION VECTOR 21040.





...CORFIDI

