000 FXUS65 KFGZ 060400 AFDFGZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF 900 PM MST SAT MAR 05 2005 .SYNOPSIS...A LOW PRESSURE SYSTEM CENTERED OVER SOUTHERN ARIZONA WILL PRODUCE SCATTERED RAIN AND SNOW SHOWERS TONIGHT AND AGAIN ON SUNDAY. ON MONDAY...HIGH PRESSURE WILL BUILD ACROSS THE STATE BRINGING AN END TO THE SHOWER ACTIVITY. WARMER AND DRY WEATHER IS EXPECTED FOR THE REMAINDER OF THE WEEK. && .DISCUSSION...WV IMAGERY INDICATES THE UPPER LOW IS NOW CENTERED OVER NW MEX. RADAR RETURNS SHOW SCATTERED SHOWERS ACROSS THE CWA. THE SHOWERS ARE EXPECTED TO CONTINUE OVERNITE AS VORT LOBES ROTATE AROUND THE LOW. THE AIR MASS WILL REMAIN MOIST AND UNSTABLE AGAIN TOMORROW AS THE LOW MIGRATES SLOWLY EASTWARD. STEEP LAPSE RATES AND LOW LIS WILL SUPPORT ISOLATED CONVECTION OVER THE CWA TOMORROW AFTERNOON. THE THREAT OF PRECIP WILL FINALLY BEGIN TO TAPER OFF SUNDAY NIGHT INTO MONDAY AS THE LOW MOVES INTO CENTRAL MEX. HIGH PRESSURE BUILDING OVER THE WEST COAST BRINGS A DRIER NW FLOW INTO THE STATE BY TUESDAY. THE STATE WILL REMAIN UNDER THE INFLUENCE OF THE HIGH FOR THE REMAINDER OF THE WEEK WITH DRY AND WARMER WX ON TAP FOR THE CWA. GRIDS AND ZONES IN GOOD SHAPE. NO UPDATE TO THE ZONES WITH ONLY MINOR TWEAKS TO THE GRIDS TONIGHT. DF && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && $$