

131 

WWUS20 KWNS 231027

SEL3

SPC WW 231027

TXZ000-231800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 703

NWS STORM PREDICTION CENTER NORMAN OK

525 AM CDT SAT OCT 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST...WEST CENTRAL...AND NORTHWEST TEXAS



EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 525 AM UNTIL

100 PM 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 65

STATUTE MILES EAST AND WEST OF A LINE FROM 115 MILES SOUTH

SOUTHWEST OF SAN ANGELO TEXAS TO 75 MILES NORTH OF MINERAL WELLS

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...TSTMS EXPECTED TO INCREASE IN COVERAGE/INTENSITY

THROUGH MIDDAY ACROSS PARTS OF WRN AND NRN TX AS SRN NM UPR IMPULSE

CONTINUES NEWD WITHIN LARGER SCALE CNTRL U.S. TROUGH.  INCREASING

ASCENT ON WRN EDGE OF DEEP MOIST AXIS /WITH PW AROUND 1.25 INCHES/

MAY FOSTER SVR HAIL IN SOME STORMS GIVEN RELATIVELY STEEP MID LVL

LAPSE RATES AND 40 KT SWLY CLOUD-LAYER SHEAR.  STORMS MAY EVOLVE

INTO SEVERAL SMALL CLUSTERS...WITH EMBEDDED BOWING SEGMENTS POSSIBLY

YIELDING DMGG WIND.



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 500. MEAN STORM

MOTION VECTOR 23035.





...CORFIDI

