FXUS65 KFGZ 251657
AFDFGZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
957 AM MST WED NOV 25 2009

.SYNOPSIS...HIGH PRESSURE WILL BRING MOSTLY SUNNY DAYS AND 
COLD...CLEAR NIGHTS...THROUGH FRIDAY. A LOW PRESSURE SYSTEM WILL 
AFFECT THE REGION THIS WEEKEND WITH MUCH COLDER 
TEMPERATURES...BREEZY CONDITIONS...AND A CHANCE OF RAIN AND SNOW 
SHOWERS.

&&

.DISCUSSION...CURRENT FORECAST FOR TODAY OF GENERALLY CLEAR 
SKIES...NEAR NORMAL TEMPERATURES...AND LOCAL NORTHEAST BREEZES 
APPEARS ON TRACK. NO MAJOR UPDATES PLANNED BEFORE THE AFTERNOON 
FORECAST PACKAGE.

&&

.PREV DISCUSSION /300 AM MST/...HIGH PRESSURE ALOFT WILL CONTINUE TO 
DOMINATE THE REGION THROUGH THANKSGIVING PRODUCING MOSTLY CLEAR 
CONDITIONS AND HIGH TEMPERATURES NEAR SEASONAL AVERAGES TODAY...AND 
ABOVE NORMAL TEMPERATURES THURSDAY AND FRIDAY. 

BY FRIDAY AND THROUGH THE WEEKEND...A FIRST IN A SERIES OF UPPER 
LEVEL WEATHER DISTURBANCES ARE FORECAST TO ENTER AND MOVE ACROSS THE 
WESTERN STATES. BREEZY TO WINDY SOUTHWEST WINDS ARE FORECAST TO 
DEVELOP FRIDAY AFTERNOON AND SATURDAY A HEAD OF AN APPROACHING COLD 
FRONT AND UPPER LEVEL WEATHER SYSTEM. HIGH TEMPERATURES ARE FORECAST 
TO COOL INTO THE 40S IN THE MOUNTAINS AND 50S TO 60S IN THE LOWER 
VALLEYS ON SATURDAY...AND BY SUNDAY BEHIND THE COLD FRONT HIGH 
TEMPERATURES WILL HAVE DROPPED INTO THE 30S IN THE MOUNTAINS AND 40S 
TO 50S IN THE LOWER VALLEYS. THERE WILL BE A CHANCE OF RAIN AND SNOW 
SHOWERS ALONG AND BEHIND THE COLD FRONT SATURDAY NIGHT INTO SUNDAY. 
THIS SYSTEM IS FORECAST TO EXIT THE SOUTHWEST QUICKLY BY SUNDAY 
NIGHT...FOLLOWED BY DRY CONDITIONS...COLD AND BREEZY NORTHERLY WINDS 
FOR MONDAY. HIGH PRESSURE IS FORECAST TO BUILD BACK INTO THE 
SOUTHWEST STATES LATE MONDAY THROUGH WEDNESDAY OF NEXT WEEK. HIGH 
TEMPERATURES ARE FORECAST TO MODERATE QUICKLY BACK TO OR JUST BELOW 
SEASONAL AVERAGES...UNDER A COOL AND DRY NORTHEAST TO EAST FLOW.   

&&

.AVIATION...FOR THE 18Z PACKAGE...EXPECT VFR CONDITIONS FOR THE NEXT 
24 HOURS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...NONE. 

&&

$$

PUBLIC.................KD/TC
AVIATION...............DB

VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER 
INFORMATION.