201 FXUS65 KVEF 031640 AFDLAS MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 940 AM PDT MON JUN 3 2002 SYNOPSIS...A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE SOUTHERN GREAT BASIN AND THE MOJAVE DESERT TODAY. THIS WILL PRODUCE ISOLATED SHOWERS OR THUNDERSTORMS ACROSS PARTS OF THE REGION FOLLOWED BY A DRY NORTHERLY FLOW AS THE LOW MOVES INTO ARIZONA TONIGHT AND TUESDAY. A STRONG RIDGE OF HIGH PRESSURE WILL BUILD OVER THE DESERT SOUTHWEST MID WEEK PROVIDING DRY WEATHER WITH TEMPERATURES 5 TO 10 DEGREES ABOVE NORMAL. DISCUSSION...UPPER TROUGH CENTERED OVER SOUTHERN NEVADA THIS MORNING WILL SLOWLY SHIFT EAST INTO WESTERN ARIZONA THIS AFTERNOON. WATER VAPOR LOOP SHOWS MOISTURE CONCENTRATED OVER SOUTHEAST NEVADA AND NORTHWEST ARIZONA. YESTERDAY THUNDERSTORMS DEVELOPED IN AREA OF CONVERGENCE FROM INYO COUNTY NORTHEAST ACROSS LINCOLN COUNTY. TODAY MODELS PROG BEST CONVERGENCE FROM SOUTHERN UTAH BACK SOUTHWEST INTO NORTHWEST ARIZONA. ALL THE MODELS DEPICT BROAD AREA OF INSTABILITY EASTERN HALF OF CWA. GOING FORECAST HAS THIS COVERED. NO UPDATES PLANNED. PIERCE .LAS...NONE.