Issued by NWS Tucson, AZ
000 FXUS65 KTWC 150940 AFDTWC AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 240 AM MST WED OCT 15 2008 .SYNOPSIS...DRY WITH A WARMING TREND THIS WEEK AS HIGH PRESSURE BUILDS ACROSS THE AREA. && .DISCUSSION...CRYSTAL CLEAR EARLY MORNING UNDER THE HARVEST MOON WITH OVERNIGHT LOW TEMPERATURES WARMER THAN THE PAST COUPLE OF MORNINGS. LOOK FOR ANOTHER SUNNY DAY ACROSS THE AREA WITH DAYTIME TEMPERATURES 8-10 DEGREES WARMER THAN TUESDAY. LOW LEVEL EASTERLY FLOW WILL SLOWLY ADVECT MOISTURE THAT IS CURRENTLY OVER SOUTHWEST NEW MEXICO ACROSS SOUTHEAST ARIZONA. MAY SEE A FEW CU FIELDS NEAR THE STATE BORDER WITH FURTHER WESTWARD EXTENSION OF THIS MOISTURE...POSSIBLY AS FAR WEST AS TUCSON. STILL GONNA BE SUNNY WITH DAYTIME TEMPERATURES ABOUT 2-3 DEGREES WARMER THAN WEDNESDAY. UPPER RIDGE AMPLIFIES OVER THE STATE ON FRIDAY RESULTING IN A COUPLE MORE DEGREES ON WARMING. FRIDAY WILL MOST LIKELY BE THE WARMEST DAY OF THE WEEK AS HIGH PRESSURE ALOFT MOVES EAST THIS WEEKEND WHILE THE UPPER LOW OFF WEST COAST STARTS TO MOVE TOWARD SW CONUS. THIS FEATURE MAY SEEP IN SOME MOISTURE FROM THE SOUTH FOR A VERY SLIGHT CHANCE OF SHOWERS AND A SMIDGE COOLER IN TEMPERATURES. SOME SIGNIFICANT CHANGES ARE BEING HINTED NEXT WEEK WITH A DEEP TROUGH MOVING THROUGH THE GREAT BASIN. RIGHT NOW WILL WAIT FOR SOME MORE MODEL CONSISTENCY AND HOLD OFF ON INTRODUCING CLIMO POPS. && .AVIATION...CLEAR SKIES WITH LIGHT DIURNALLY DRIVEN SURFACE WINDS TO PREVAIL ACROSS SE AZ TODAY AND TONIGHT. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. $$ WEATHER.GOV/TUCSON
