Area Forecast Discussion
Issued by NWS Flagstaff, AZ

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FXUS65 KFGZ 260320

Area Forecast Discussion
National Weather Service Flagstaff AZ
820 PM MST Sun Jun 25 2017

.SYNOPSIS...Chances for showers and thunderstorms will shift
eastward Monday as a drier westerly flow begins. A slow and
steady cooling trend will develop for much of this week.


Showers have all but ended across northern Arizona this evening,
with just some isolated light showers continuing. Cooler temps and
increasing breezes to develop in the coming days.


.PREV DISCUSSION /340 PM MST/...A trough of low pressure off the
West Coast will move into the Great Basin on Monday. This will
start a dry westerly flow across Arizona for much of the work
week. Storms chances will generally be southeast of a Payson-
Window Rock line on Monday. On Tuesday, there will be just a
slight chance for storms over the White Mountains.

High temperatures will also be decreasing to near average by late
in the week.


.AVIATION...For the 06z package...Smoke from area wildfires may
create localized MVFR conditions overnight. Otherwise, another
round of showers and thunderstorms is expected to develop across
eastern Arizona after 18Z Monday. Southwesterly breezes will also
develop during the daylight hours Monday. Aviation discussion not
updated for TAF amendments.


.FIRE WEATHER...Thunderstorm chances will decrease from Monday
into Tuesday. Expect afternoon wind speeds to increase from Monday
into Tuesday. Wind speeds will approach critical thresholds on
Tuesday. Very warm temperatures and low afternoon humidity will
continue, along with high Haines indices.

Wednesday through Friday...Strong and gusty afternoon winds near
critical thresholds will continue Wednesday. Wind speeds are
forecast to decrease on Thursday and Friday. Slightly above normal
temperatures are forecast, with very low precipitation and
thunder chances.






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