Severe Thunderstorm Warning 31, NWS Las Vegas, NV

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
820 AM PDT FRI AUG 8 1997

VSBL STLT AND SFC OBS INDC PLENTY OF MID LVL INSTABILITY AROUND
WITH ACCAS CLDS AND EVEN SOME ISOLD -SHRA/-TSRA IN CA VCNTY KERN
AND INYO COUNTIES.  MEANWHILE...SHALLOW LOW LVL MSTR CONTS TO CREEP
NWD UP CO RVR INTO SRN NV WITH SOME INCR IN DEWPOINTS NOTED THIS AM
LAS/LSV.  YUM VWP STILL INCDS ONLY A SHALLOW SLY FLOW THRU 3 KFT SO
NO STRONG SURGE NOTED.  DRA SOUNDING MARGINALLY UNSTABLE WITH AVG
LAYER DATA SFC-700 RIPE FOR TSTM FORMATION.  NO DOUBT THAT TSTMS
WILL POP TDA BUT VRY DIFFICULT TO PINPOINT WHERE.

UPR HIGH HAS SHIFTED SEWD AND WILL CONT TO MOVE INTO AZ TDA.  THIS
WILL PREVENT A REPEAT OF YSTDYS TSTMS IN AZ...WHERE THE NELY FLOW
ALLOWED STORMS TO MOVE OFF HIGHER TERRAIN INTO MSTR RICH CO RVR
VALLEY.  12Z RUC INDCS WEAK 7H TROF ACRS SCNTRL NV AND FCSTS IT TO
MOVE SEWD INTO SRN NV BY MAX HEATING.  MESO ETA ALSO CONTS TO
ADVERTISE MSTR CONVERGENCE ALONG AN AXIS ROUGHLY FRM TPH TO IGM.
LOOKS THE COMBO OF THE 7H TROF AND LOW LVL MSTR CONVERGENCE WILL
MAKE FOR AN ACTIVE TSTM DAY OVR SCNTRL/SRN NV ZONES.  PLANNING ON
SOME MINOR UPDATES TO UP POPS SLGTLY AND REWORD/REGROUP FCST.

LAS 211

NEMETH

SRN NV...NONE
ERN CA...NONE
NW AZ ...NONE