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Area forecast discussion 
National Weather Service Flagstaff Arizona 
307 PM MST Sat Mar 20 2010 


Synopsis...high pressure will build over the southwest through 
Monday with warmer daytime temperatures...light winds and generally 
clear skies. Another weak weather system will bring cooler 
temperatures and a slight chance of showers on Tuesday and Wednesday. 


&& 
Discussion...the surface pressure gradients have decreased this 
afternoon and the winds have diminished across northern Arizona. 
Temperatures are still chilly...as much as 13 degrees cooler than 
yesterday at this time. 


High pressure will continue to build over Arizona through Monday. 
This will bring a warmer southerly wind pattern with daytime highs 
climbing to above normal levels both days. Otherwise...dry 
conditions and mainly clear skies appear in store. 


For Tuesday and Wednesday...models are in fair agreement in dropping 
another weak storm across Arizona from the north. The main impact 
appears to be a cool down to below normal temperatures along with a 
chance of mountain snow and valley rain showers. At this time...any 
precipitation will be on the light side. There should be little or 
no slow-down the the Spring thaw and elevated flows in streams and 
rivers south of the Mogollon Rim. 


For Thursday into next weekend...high pressure will continue to 
dominate the weather pattern with only a weak weather disturbance or 
two to kick-up daytime breezes. 


&& 


Aviation...for the 00z package...expect VFR conditions for the next 
24 hours with sky clear-sct250 skies. Aviation discussion not updated for 
amendments. 


&& 


Fgz watches/warnings/advisories...none. 


&& 


$$ 


Public..................mas 
aviation................jj 


Visit weather.Gov/Flagstaff for northern Arizona weather 
information.