Area Forecast Discussion
Issued by NWS Flagstaff, AZ

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FXUS65 KFGZ 282229

Area Forecast Discussion
National Weather Service Flagstaff AZ
329 PM MST THU JUL 28 2016

.SYNOPSIS...Widely scattered thunderstorms, especially across
Yavapai and northern Gila counties, is forecast to continue into
the evening. A cooling trend with increased chances for showers
or thunderstorms is forecast for Friday and the weekend, lasting
into next week.


Storms have intensified this afternoon across portions of the
Northland, mainly across Yavapai and northern Gila counties. In
addition, the excessive heat warning continuing for canyon
country in far northern Arizona, and those planning recreation
below 4000 ft should be aware of the dangerously elevated
temperatures anticipated into this evening.

Strong high pressure over northwestern Arizona will weaken as low
pressure moves into the Pacific Northwest. This will weaken the
cap over our area and allow for decent return flow that will begin
to transport surge moisture northward over the weekend, resulting
in increased thunderstorm coverage in the coming days.

In short, expect cooling temperatures and increased monsoon
activity for the remainder of the seven day forecast period.


.AVIATION...For the 00z Package...Look for mainly VFR conditions
over the next 24 hours. Isolated showers and thunderstorms will
diminish after sunset. For Friday...Scattered afternoon
thunderstorms over the higher terrain from the Grand Canyon and
Flagstaff southeast to the New Mexico border. Elsewhere...isolated
storms. Aviation discussion not updated for TAF amendments.


.FGZ WATCHES/WARNINGS/ADVISORIES...Excessive Heat Warning until 11
PM MST this evening FOR AZZ005-006.




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