758 
fxus65 ktwc 202130 
afdtwc 


Area forecast discussion 
National Weather Service Tucson Arizona 
230 PM MST Friday Nov 20 2009 


Synopsis...weather systems will continue to pass north of our area. 
Other than some occasional patches of high clouds...Southeast 
Arizona will remain dry with mostly clear skies and warm daytime 
temperatures. 


&& 


Discussion...another warm November day across Southeast Arizona. 
The system currently impacting northern California/Pacific northwest 
will stay north of the area on Saturday. A Gulf of Alaska system 
will also stay north of the area Sunday night into Monday. Some 
breezes will accompany both of these systems. High pressure rebuilds 
over the area next week. High temperatures next seven days will 
remain above normal with day-to-day variability. 


&& 


Aviation...some wisps of cirrus next 24 hours otherwise it will be 
clear. Expect normal diurnal wind trends at the terminal sites. 
Aviation discussion not updated for taf amendments. 


&& 


Fire weather...a Pacific weather system will move north of the area 
on Saturday. Dry conditions will continue across Southeast Arizona 
although some west and southwest breezes may occur...particularly 
across the higher terrain north and east of Tucson Saturday 
afternoon. Dry conditions will continue Sunday into Monday under 
northwesterly flow aloft. 


&& 


Climate...counting today's high/low temperature data...the average 
temperature for November at the Tucson Airport is 66.8 degrees. This 
currently ranks as the 4th warmest to date...well behind the record 
of 69.6 degrees from 1999. 


&& 


Twc watches/warnings/advisories...none. 


$$ 


Weather.Gov/Tucson