FXUS65 KFGZ 240919
AFDFGZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 AM MST THU DEC 24 2009

.SYNOPSIS...HIGH PRESSURE WILL BUILD OVER THE WESTERN UNITED STATES 
THROUGH SATURDAY...BRINGING DRY CONDITIONS...BELOW NORMAL 
TEMPERATURES...AND LOCALLY GUSTY NORTHERLY WINDS. UNSETTLED WEATHER 
WILL RETURN NEXT WEEK AS A SERIES OF UPPER DISTURBANCES MOVE ACROSS 
THE AREA.

&&

.DISCUSSION...OVER THE NEXT SEVERAL DAYS HIGH PRESSURE WILL SET-UP 
OVER THE FAR WESTERN UNITED STATES WITH A DEEP...NEARLY STATIONARY 
LOW OVER THE EASTERN HALF OF THE COUNTRY. THIS PATTERN WILL 
PLACE NORTHERN ARIZONA UNDER A DRY NORTHERLY FLOW. AS A 
RESULT...SKIES WILL REMAIN MAINLY CLEAR AND CONDITIONS DRY THROUGH 
SATURDAY. THE GENERAL NORTHERLY FLOW AND DEEP COLD POOL TO THE EAST 
WILL ENSURE THAT DAYTIME HIGHS WILL REMAIN BELOW NORMAL AND ON THE 
COLD SIDE. IN ADDITION...WITH DRY CONDITIONS...SNOW COVERED GROUND 
AND STRONG RADIATIONAL COOLING...COLD NIGHTTIME LOWS ARE ANTICIPATED.

EARLY NEXT WEEK...MODELS CONTINUE TO SHOW A VARIETY OF SOLUTIONS. 
THE MAIN MESSAGE IS A RETURN TO UNSETTLED CONDITIONS WITH THE CHANCE 
OF RAIN AND SNOW SHOWERS RETURNING AS A SERIES OF WEATHER 
DISTURBANCES MOVE IN FROM OVER THE PACIFIC.

&&

.AVIATION...FOR THE 12Z PACKAGE...VFR CONDITIONS WITH OCCASIONAL 
NORTH-NORTHEASTERLY BREEZES ARE ANTICIPATED FOR THE 24 HR TAF 
PERIOD. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...

NONE.

&&

$$

PUBLIC.........MCCOLLUM
AVIATION.......KD

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