Area Forecast Discussion
Issued by NWS Flagstaff, AZ

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FXUS65 KFGZ 211701

Area Forecast Discussion
National Weather Service Flagstaff AZ
1001 AM MST Sun May 21 2017

.SYNOPSIS...Expect mainly dry and warm conditons for the remainder
of the weekend and into much of next week.


.UPDATE...No major updates were required to the ongoing forecast.
Only updated the hourly temp/dewpoint/wind grids based on current
obs/trends. The remaining forecast elements are in good shape.


.PREV DISCUSSION /340 AM MST/...Arizona will remain on the eastern
side of a high amplitude ridge through Monday or Tuesday of next
week. A weak s/wv trough will move down the eastern side of this
ridge later today and Monday, which could provide just enough
cooling aloft to generate a few high-based showers over higher
terrain. Otherwise, we expect seasonal temperatures and mostly
clear skies as the northerly flow in the middle and higher levels
is mainly dry.

The ridge axis shifts over Arizona by late Tuesday and Wednesday.
This will bring very dry and warm conditions to our area through
Thursday. Northerly flow aloft returns late next week and into
next weekend, for a few degrees of cooling and continued dry


.AVIATION...For the 18Z package...Expect VFR conditions and light
winds, generally less than 10 kts, over the next 24 hours. Aviation
discussion not updated for TAF amendments.






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