Severe Thunderstorm Warning 28, NWS Las Vegas, NV

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
150 PM PDT SUN AUG 3 1997

WATER VAPOR LOOP THIS AFTERNOON SHOWED ABUNDANT MSTR AT MID AND UPR
LVLS FLOWING N INTO THE CWA.  VORT MAX...WHICH WAS CLEARLY EVIDENT
OVR NRN BAJA...WAS SHOWN LIFTING NNW.  KESX RADAR SHOWED SCT RW AND
A FEW TRW ACRS SRN PTNS OF THE CWA LIFTING OFF THE NW VIA SE FLO
ALF.  12Z ETA/AVN/NGM FAILED TO PROPERLY INITIALIZE VORT LOBE.
MOVMT OF VORT LOBE DEFINATELY AN UNCERTAINTY...BUT THINK FEATURE WL
CONT TO LIFT N AND BE LOCATED ACRS SRN NEVADA SOMETIME DURING THE
ERY MORNING HOURS.  BASED ON THIS TIMING...SCT NOCTURAL RW/TRW A
GOOD POSSIBLITY ACRS ALL BUT THE EXTREME N.  PER COOR WITH
PHX/LAX...WL CANCEL FLASH FLOOD WATCHES FOR SE CA AND NW AZ.  SOME
TRW WERE BEGINNING TO FLARE UP ACRS THE MTNS OF SAN BERNARDINO
WHERE GREATEST SURFACE HEATING OCCURED TDA...BUT FOR THE MOST PART
ACTIVITY HAS BEEN SUPRESSED BY CONSIDERABLE CLOUD COVER.  EXTND
PROGS INTESIFY UPR RDG ACRS THE WRN US WITH UPR HI CENTERED ACRS
SRN NEVADA THRU MUCH OF THE PD.  THIS SHOULD EFFECTIVELY CAP MOST
AREAS...EXCEPT PERHAPS ACRS PTNS OF MOHAVE COUNTY AND S CNTL NEVADA
MTNS.  LAS 4220.  MATUSIEWICZ

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