575 FXUS65 KVEF 090402 AFDLAS MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 900 PM PDT MON OCT 8 2001 SYNOPSIS...A WEAK LOW PRESSURE TROUGH WILL PASS THROUGH THE REGION ON TUESDAY...BRINGING COOL DRY AIR FROM THE NORTHWEST TO THE DESERT SOUTHWEST DURING THE MIDDLE OF THE WEEK. MORE COOL AIR WILL MOVE IN LATE ON THURSDAY. THE BREEZY AND COOLER WEATHER WILL GIVE WAY TO A GRADUAL WARMING TREND NEXT WEEKEND AS HIGH PRESSURE BUILDS IN FROM THE WEST. DISCUSSION...SHORT WAVE PRESENTLY CROSSING NORTHERN NEVADA WITH ASSOCIATED COLD FRONT LYING ACROSS NORTHWEST NEVADA. SATELLITE AND RADAR DATA INDICATE A FEW LIGHT SHOWERS LIKELY OCCURRING FROM ELKO SOUTHWEST TO NEAR AUSTIN. AS SHORT WAVE CONTINUES TO PROGRESS EAST OVERNIGHT...THIS BAND MAY BRUSH FAR NORTHEAST NYE AND NORTHERN LINCOLN COUNTIES OVERNIGHT. IN NORTHWEST ARIZONA...THUNDERSTORMS ENDED BEFORE SUNSET WITH BAND OF MID/HIGH CLOUDS SHIFTING EAST ACROSS ARIZONA/UTAH. FOR TUESDAY AND WEDNESDAY...ETA SHOWS DRY NORTHWEST FLOW OVER NEVADA WITH TWO VERY WEAK EMBEDDED RIPPLES IN THE FLOW. THOSE WEAK RIPPLES WILL BE ASSOCIATED BY SOME HIGH LEVEL MOISTURE. AT THE SURFACE...COLD FRONT WILL CONTINUE TO MOVE SOUTHEAST ACROSS THE STATE WITH PASSAGE HERE IN LAS VEGAS OCCURRING SOMETIME LATE TUESDAY MORNING WITH NORTHERLY WINDS THROUGH WEDNESDAY. A FEW FIRST PERIOD MODIFICATIONS PLANNED...OTHERWISE REMAINDER OF PACKAGE FINE. PIERCE .LAS...NONE.