482
FXUS65 KTWC 171954
AFDTWC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
1254 PM MST WED DEC 17 2025
SYNOPSIS
DRY AND WARM WEATHER WILL CONTINUE INTO NEXT WEEK,
WITH POTENTIALLY RECORD BREAKING HIGH TEMPERATURES FRIDAY THROUGH
THE WEEKEND. PATTERN CHANGE NEXT WEEK WILL LOWER TEMPERATURES AND
ELEVATE WINDS.
DISCUSSION
THE HIGH PRESSURE BRINGING WELL ABOVE NORMAL HIGH
TEMPERATURES CONTINUES AT ITS POSITION OFF THE COAST OF SOUTHERN
CALIFORNIA. THESE ANOMALOUSLY HIGH TEMPERATURES WILL PERSIST AND
PEAK THIS WEEKEND WITH NEAR TO ABOVE RECORD LEVEL HIGH
TEMPERATURES FORECAST. THIS IS WHEN THE HIGH PRESSURE WILL SHIFT
TO THE EAST AND CENTER CLOSER TO SOUTHERN ARIZONA. THE RIDGE WILL
SLOWLY CONTINUE TO MOVE EASTWARD KEEPING TEMPERATURES ELEVATED
UNTIL EARLY NEXT WEEK.
BY EARLY TO MID NEXT WEEK THE UPPER RIDGE WILL BECOME AMPLIFIED
OVER THE CENTRAL CONUS WHILE AN EASTERN PACIFIC TROUGH DEEPENS AND
APPROACHES THE WEST COAST. WHILE THE MORE SIGNIFICANT TROUGHING
STAYS TO THE WEST OF US, THIS MAY BRING MODEST COOL-DOWN AND
POTENTIALLY CHANCES FOR LIGHT PRECIPITATION LATE NEXT WEEK AND
ELEVATED WINDS. HOWEVER, SEVERAL MEAN ENSEMBLE HEIGHTS SUGGEST
THIS TROUGH WILL STAY FURTHER WEST OF US MINIMIZING THE PATTERN
CHANGE AND IMPACTS HERE IN SOUTHEASTERN ARIZONA.
AVIATION
VALID THROUGH 19/00Z.
MAINLY SKC WITH A FEW HIGH LEVEL CIRRUS STREAMING THROUGH THE
AREA. SURFACE WINDS UNDER 10 KTS AND TERRAIN DRIVEN THROUGH THE
FORECAST PERIOD. AVIATION DISCUSSION NOT UPDATED FOR TAF
AMENDMENTS.
FIRE WEATHER
WARM AND DRY CONDITIONS CONTINUE INTO EARLY NEXT
WEEK. HIGHS 12 TO 17 DEGREES ABOVE NORMAL EACH DAY WITH MINIMUM
RELATIVE HUMIDITY VALUES OF 12-22 PERCENT. 20-FOOT WINDS LESS THAN
15 MPH AND TERRAIN DRIVEN.
TWC WATCHES/WARNINGS/ADVISORIES
NONE.
MALARKEY
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