Weather Service Report


948 
FXUS65 KFGZ 181006
AFDFGZ

Area Forecast Discussion
National Weather Service Flagstaff AZ
305 AM MST Wed Oct 18 2017

.SYNOPSIS...Expect increasingly breezy conditons for the rest of 
the week, with a slight chance of showers and a gradual cooling 
trend. A return to warm and dry conditions will develop later in 
the weekend and into next week.

&&

.DISCUSSION...A pair of weak s/wvs will move through the Great Basin 
in the next few days, specifically later today, and then again by 
Friday. We expect a gradual cooling trend, along with increasing 
southwest winds, as a result. There will also be enough mid-level 
moisture and cooling to support a few showers through the end of the 
week. By late in the weekend and early next week, models indicate 
another high amplitude ridge will build over the area, raising our 
temperatures at least 10 degrees above normal.

&&

.AVIATION...For the 12Z package...Local MVFR/IFR conditions due to 
smoke probable through 15z. Otherwise VFR conditions through 00z Thu 
though cigs developing and lowering to AOA 15kft msl. Wind speeds 
generally light. Aft 00Z widely scattered light rain showers 
possible west of a KPGA-KPAN line. Aviation discussion not updated 
for TAF amendments.

&&

.FIRE WEATHER...For today and Thursday, a weak disturbance will 
bring increasing clouds and a chance of rain showers. Wetting rain 
is not expected. Expect limited ventilation conditions again today. 
Southwest winds increasing to 10 to 20 mph Thursday afternoon will 
produce much improved ventilation. 

Friday through Sunday...Expect windy conditions on Friday as a cold 
moves through the Great Basin.  Drier and cooler air arrives 
Saturday, along with a wind switch to the north or northwest. High 
pressure will build aggressively starting Sunday, with a return to 
well above normal temperatures and very dry surface conditions.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

PUBLIC...Peterson
AVIATION...DL
FIRE WEATHER...DL


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Western Regional Climate Center, wrcc@dri.edu