717 
fxus65 kslc 051034 
afdslc 


Area forecast discussion 
National Weather Service Salt Lake City Utah 
434 am MDT Sat Jul 5 2008 


Synopsis...moisture will linger across southern and eastern Utah 
today...while slightly cooler air filters into the north. A weak 
weather system will brush northern Utah on Sunday...before high 
pressure returns for much of next week. 


&& 


Discussion...southwesterly flow aloft extends across the Great 
Basin this morning...as middle level ridge has shifted south and east 
of the area. A weak surface front moved into northern Utah 
overnight...which should knock several degrees off todays maximum 
temperatures. Otherwise moisture being pulled north from Arizona will reside 
across the eastern half of the state today...and expect a fairly 
active convective day across areas east of I-15. 


Models drop a weak shortwave trough into northern Utah on 
Sunday...with associated surface front pushing through the area 
during the early afternoon. May see a few showers/thunderstorms 
associated with this feature...otherwise lingering moisture should 
bring another round of diurnal convection across higher terrain of 
central/southern Utah. 


Medium range models continue to advertise elongated ridge axis to 
extend from the eastern Pacific through the Great Basin for much 
of the upcoming week. This should suppress any appreciable 
moisture well south of the area. It appears the first real surge 
of monsoonal moisture may arrive Friday...as both GFS and ec 
develop a trough across the Pacific northwest helping to pull 
moisture north. 


&& 


Aviation....winds at kslc are expected to remain northwest 
throughout the day...although there is a 30 percent chance of 
south winds developing during 14-18z timeframe. Otherwise VFR 
conditions will prevail throughout the day. 


&& 


Fire weather...cold front over northern Utah with weak northwest 
winds behind and stronger southwest winds ahead. Enough wind will 
remain across southern Utah with low humidity to keep a red flag 
warning out for this afternoon and evening. Another weak system 
will brush northern Utah Sunday evening then a dry and stable west 
to northwest flow aloft will persist across the Great Basin into 
the coming week...keeping temperatures warm and relative humidity values low. No 
organized shower or thunderstorm activity is expected until late 
in the week. 


&& 


Slc watches/warnings/advisories... 
Utah...red flag warning from noon Saturday to 9 PM Saturday for utz435- 
utz437-utz439-utz440-utz441. 


Wyoming...none. 


&& 


$$ 


Seaman/Young 


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