785 FPUS65 KLAS 291607 AFDLAS MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 900 AM PDT TUE JUL 29 1997 WV LOOPS DEPICTS VORT CNTR SW OF SAN WITH SOM INCR IN HI LVL MSTR INTO FA WHILE DEEP MSTR LIES ACRS ERN AZ/UT. LOW LVLS STILL MOIST ACRS FA WITH DWPTS RUNNING IN THE UPR 40S TO UPR 50S. LOWER CO RVR VLY DWPTS CLIMBING INTO THE MID 60S WITH SURGE AT YUM. USING ETA MIXING RATIOS AT H8/H7 FRM 12Z...MODIFIED DRA SNDG INDICATES A CAP STRENGTH NR 0.5. WILL CONT PRESENT FCST TDA. WITH MSTR SHFTG BACK WWD WED MAY NEED TO INCLD MENTION ALNG LAKES...BUT WILL WAIT FOR FURTHER MDL DATA. NO UPDTS. LAS 000. PIERCE SRN NV...NONE ERN CA...NONE NW AZ ...NONE