Area Forecast Discussion
Issued by NWS Tucson, AZ

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FXUS65 KTWC 212001
AFDTWC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
115 PM MST SAT NOV 21 2009

.SYNOPSIS...WEATHER SYSTEMS WILL CONTINUE TO PASS NORTH OF OUR AREA.
OTHER THAN SOME OCCASIONAL PATCHES OF HIGH CLOUDS...SOUTHEAST
ARIZONA WILL REMAIN DRY WITH MOSTLY CLEAR SKIES AND WARM DAYTIME
TEMPERATURES.

&&

.DISCUSSION...TROUGH DIGGING INTO THE INTERMOUNTAIN WEST WITH ENERGY
AND MOISTURE TRACKING WELL NORTH OF OUR AREA. MODEST GRADIENT
ENHANCEMENT...PROBABLY WON`T SEE MUCH DIFFERENCE COMPARED TO NORMAL
DIURNAL TRENDS. SHORTWAVE RIDGE WITH LITTLE INFLECTION SUNDAY BEFORE
ANOTHER IMPULSE RIDES THROUGH WELL NORTH OF THE AREA SUNDAY NIGHT.
DIRTY RIDGE FOR MUCH OF THE NEW WEEK...BUT ACTUAL HEIGHT AND
THICKNESS GAINS WILL NOT BE THAT UNSEASONABLE. JUST A FEW DEGREES
ABOVE CLIMO. DRY AND RELATIVELY MILD UNTIL FURTHER NOTICE.

&&

.AVIATION...SKC-FEW CLOUDS MAINLY ABOVE 20K FT AGL THROUGH 12Z
SUNDAY MORNING. NORMAL DIURNAL WIND TRENDS ARE EXPECTED AT THE
TERMINAL SITES...WITH SURFACE WINDS GENERALLY LESS THAN 10 KTS.
AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...A WEATHER SYSTEM WILL MOVE ACROSS THE GREAT BASIN
TODAY WITH A STRONGER SYSTEM EXPECTED TO MOVE THROUGH THE NORTHERN
ROCKIES ON SUNDAY. THESE SYSTEMS WILL RESULT IN A LITTLE COOLER
DAYTIME TEMPERATURES ACROSS SOUTHEAST ARIZONA...AS DRY CONDITIONS
CONTINUE. THERE MAY BE SOME AFTERNOON AND EARLY EVENING BREEZES
ACROSS THE HIGHER TERRAIN TO THE NORTH AND EAST OF TUCSON TODAY AND
SUNDAY...HOWEVER...WINDS ARE EXPECTED TO REMAIN WELL BELOW CRITICAL
FIRE WEATHER THRESHOLDS.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...NONE.

$$

WEATHER.GOV/TUCSON






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