343
FXUS65 KTWC 042156
AFDTWC

Area Forecast Discussion
National Weather Service Tucson AZ
256 PM MST Wed Dec 4 2024

.SYNOPSIS...

Temps will remain at or above normal through the weekend, with a
cool down coming early next week.

&&

.DISCUSSION...

Expect mostly dry conditions across the CWA through Friday, with
some slight chances of precipitation in the White Mountains.

After a few more days of near or above normal high temperatures,
the pattern will change, bringing with it much cooler air;
relative to what we have been accustomed in the recent past.

An upper level trough will approach from the Pacific NW on
Saturday, and make its way down to the SW by Monday. Conditions
will likely remain dry, but high temps will fall into the 60s -
much more in line with climate normals for this time of the year.

Of particular concern will be the low temps across most of the
region Monday through Wednesday, where many areas could see temps
near freezing. This will have impacts on holiday activities and
those with agricultural interests and bears watching for
increasing confidence in the coming days.

&&

.AVIATION...Valid through 06/00Z

SKC conditions will prevail at all terminals for the forecast
period. Winds will generally be northwesterly in the 5-10 knot
range at all terminals, shifting to an easterly component at KDUG
this evening. Aviation discussion not updated for TAF amendments.

&&

.FIRE WEATHER...

Near normal to above normal temperatures continue
through the week. Minimum relative humidities will be on the
gradual increase over the next several days. Values tomorrow will
range from 15 to 20 percent west of Tucson and south near the
International Border, to 30 to near 40 percent in the Upper Gila
River Valley. By Friday lowest values should exceed 25 percent
across most of southeastern Arizona with minimum relative
humidities above 35 percent east of Tucson. This moisture push
will also bring slight chances for light showers and high
elevation snow Thursday into Saturday, generally in eastern zones.
Winds Wednesday through the weekend will be light and terrain
driven.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

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