747 
FPUS65 KLAS 141001
AFDLAS

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
300 AM PDT SAT JUN 14 1997

WV STLT LOOP INDCS UPR LOW REMAINING OVR SCNTRL NV BTWN TPH/P38. 
00Z UA CHARTS/SOUNDINGS SHOW 5H COLD POOL OF -18 COVERING MUCH OF
SRN NV WITH DRA FRZ LVL AROUND 9 KFT.  MODELS IN GENERAL AGREEMENT
AND FCST LTL MOVEMENT OF UPR LOW TDA WITH SVRL VORTS ROTATING
AROUND IT.  MSOT SIG VORT ATTM APCHG TPH FRM THE NE.  THIS HELPING
TO ENHANCING AREA OF -SHRA OVR SRN INYO CO CA NEWD INTO SRN NYE/NW
CLARK AND SE LINCOLN COUNTIES IN NV.  ETA/MESO ETA SEEM TO HAVE THE
BEST DEPICTION OF THIS AND BEGIN TO ROTATE THE ASSCD UVV/MSTR FIELD
NEWD THIS AM AS VORT CONTS TO SWING AROUND BASE OF UPR LOW.  BASED
ON THIS HAVE INCRD POPS INYO CO AND SCNTRL NV ZONES AND WILL CONT
TO MONITOR TO SEE IF PCPN BEGINS TO MOV FARTHER SE INTO EXTREME SRN
NV.  ALTHOUGH DEFORMATION AXIS BEHIND UPR LOW OVR CNTRL/SCNTRL NV A
LTL WEAKER TDA...SFC DEWPOINTS AND PRECIPITABLE WTR VALUES REMAIN
HIGH SO HAVE MENTIONED LOCALLY HVY RAIN NV ZNS 13-15 PER QPFERD
DISC.  IN LIEU OF DYNAMICS...AFTN SHWRS/TSTMS STILL INSTORE TDA
WHERE SUFFICIENT HEATING OCCURS UNDER COLD POOL ALOFT.  ONLY SLGT
ADJUSTMENTS TO SUNDAY FCST TO EMPHASIZE DIURNAL NATURE OF PCPN OVR
NV AS UPR LOW BEGINS TO FILL AND GRADUALLY SHIFT EWD.  WHILE SOME
DRYING INDCD...LINGERING MSTR SUFFICIENT FOR AT LEAST ISOLD
CONVECTION. 

NO CHGS TO CURRENT EXTENDED AS 5H HGTS SLOWLY RECOVER...ALTHOUGH
BAGGY TROF REMAINS OVR REGION.  MRF DOES INDC NEXT PAC TROF A LTL
DEEPER/FASTER THAN PREVIOUS RUN...WILL WAIT AND SEE IF THIS ONE
CUTS OFF AS WELL.  LAS531.

NEMETH

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