

824 

WWUS20 KWNS 021856

SEL6

SPC WW 021856

TXZ000-030000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 226

NWS STORM PREDICTION CENTER NORMAN OK

155 PM CDT SAT MAY 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTH-CENTRAL TEXAS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 155 PM UNTIL

700 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES EAST NORTHEAST OF

DALLAS TEXAS TO 45 MILES SOUTHWEST OF WACO TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU6).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 225...



DISCUSSION...LIFT ASSOCIATED WITH APPROACHING SHORT WAVE TROUGH

APPEARS TO BE AIDING PRIMARILY POST-FRONTAL DEEP CONVECTION OVER

PARTS OF NCNTRL TX ATTM. VERY MOIST AIR MASS TO THE EAST OF THIS

FORCING AND SUBSEQUENT STORM DEVELOPMENT CONTINUES TO DESTABILIZE

WITH LIFT AND HEATING OF THE DAY EXPECTED TO REMOVE REMAINING

CONVECTIVE INHIBITION AHEAD OF THE SURFACE FRONT AND FRONTAL WAVE

OVER THE NEXT 1-2 HOURS. WIND FIELDS WILL CONTINUE TO INCREASE TO

SUPPORT ORGANIZED/PERSISTENT UPDRAFTS CAPABLE OF VERY LARGE HAIL. IF

SURFACE-BASED QUASI-DISCRETE TO LINEAR MODE STORMS DEVELOP ALONG THE

FRONT OVER THE NEXT FEW HOURS AS APPEARS POSSIBLE...DAMAGING WIND

AND TORNADO POTENTIAL WILL EXIST WITH THESE STORMS AND ACTIVITY WILL

SPREAD EAST INTO THE EARLY EVENING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 27025.





...CARBIN

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