Area Forecast Discussion
Issued by NWS Tucson, AZ

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FXUS65 KTWC 090459
AFDTWC

Area Forecast Discussion
National Weather Service Tucson AZ
959 PM MST Fri Dec 8 2017

.SYNOPSIS...After another cool night, high pressure aloft will
build across the area this weekend into next week, resulting in
dry conditions and a return to above average daytime temperatures.

&&

.DISCUSSION...A lot of cirrus west of the area with the high
amplitude ridge near the west coast. Clouds will dissipate on the
front side of the ridge before entering our area tonight. Combined
with a dry northerly flow, we should have another chilly night,
but nothing unusual for early December. As the ridge expands into
our area, we`ll start to see some of that cirrus along with a
warming trend. The current forecast handles this well. No updates
this evening.

&&

.AVIATION...Valid thru 10/06Z.
SKC through the forecast period. Surface winds less than 10 kts
overnight. Increasing from NE-SE 10 to 15 kts with higher gusts
after 16Z. Aviation discussion not updated for TAF amendments.

&&

.FIRE WEATHER...Dry conditions persist through the next seven days.
Light winds strengthen Saturday through Sunday from the east to
southeast, with afternoon gusts around 20-25 mph. Winds then
decrease for Monday and beyond while still maintaining an easterly
component.

&&

.PREV DISCUSSION...Another round of cold temperatures can be
expected tonight, with overnight lows only about 2 to 4 degrees
warmer than what was observed this morning. A ridge of high
pressure aloft amplifying over the western United States will
translate to a gradual warmup this weekend. High temperatures will
level off to above normal readings next week. An increase in
cloudiness can be expected Sunday into Monday as a weak upper low
undercuts the high pressure ridge and tracks through Sonora,
Mexico. Models keep the deeper moisture needed for precipitation
chances south of the area. Thus, will maintain a dry forecast this
weekend into much of next week.

&&

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

&&

$$


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