Flash Flood Warning 45, NWS Las Vegas, NV

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
845 AM PDT SAT AUG 30 1997

NO CHGS PLANNED TO CURRENT FCST WITH MAIN WX CONCERNS TDA FOCUSED
OVR NW AZ.  UPR HIGH VCNTY TX PANHANDLE AND LOW OFF BAJA COAST CONT
TO FUNNEL DEEP MSTR INTO CNTRL/ERN AZ ON ANTICYCLONIC FLOW.
DEWPOINTS REMAIN VRY HIGH ALONG AN AXIS FRM THE LWR CO RVR VLY NWD
TO IGM. HOWEVER...THERE HAS NOT BEEN A SIG CHG UP OR DWN IN THE
DEWPOINT VALUES FRM 24 HRS AGO AND NEITHER THE YUM OR LAS VAD WIND
PROFILES SHOW A DEEP SURGE (MAINLY LESS THAN 5KFT).

WHAT IS DIFFERENT FRM YSDTY IS THE AMT OF MID LVL MSTR AND
INSTABILITY PRESENT OVR NW AZ WHICH IS ACCOMPANIED BY A VORT IN WRN
AZ VCNTY PRC.  IR STLT ALREADY SHOWS CLDS DVLPG OVR MOHAVE CO SO
WILL CONT TO MONITOR FOR PSBL EARLY DEVELOPMENT OF TSTMS.  AS
POINTED OUT BY RNO...VBG SOUNDING SHOWS MSTR FRM REMNANTS OF JIMENA
CONFINED TO HIGH LVLS AND DOES NOT POSE MUCH OF A CONCERN.
INTERESTING TO NOTE THAT THE APCH OF THIS HIGH LVL MSTR SIGNALS A
MORE SWLY FLOW ALOFT AND IT DOES APPEAR TO BE SHUNTING THE MSTR
PLUME IN AZ TO THE E.  DESPITE THAT...12Z ETA LOOKS VRY BULLISH ON
INCRG MSTR AND INSTABILITY INTO SRN NV SUN ON. STRENGTHENING S-SELY
FLOW. WILL TAKE A CLOSER LOOK AT THAT FOR AFT PACKAGE.  LAS 011.

NEMETH

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