038 
fxus65 kslc 111658 
afdslc 


Area forecast discussion 
National Weather Service Salt Lake City Utah 
958 am MST Thursday Mar 11 2010 


Synopsis...high pressure aloft will settle over the area for 
tonight through Friday. The next storm system is expected to 
impact the region this weekend. 


&& 


Discussion...the upper ridge axis just to the west of Utah this 
morning will settle into the state by this evening. This ridge 
will continue east through the state ahead of the next Pacific 
trough arriving for the weekend. This next trough is following the 
trend of late in that it will split along the coast...with the southern 
portion digging south and closing off over southern Utah and/or northern Arizona 
for Saturday night/Sunday. 


Southern/central Utah once again look to be in the cross-hairs of this 
next storm. The associated surface cold front will hit western Utah as 
a well-defined feature late Saturday...with the portion moving 
through southern/central Utah remaining strong into Saturday night. Strong 
dynamic lift and deep cold advection associated with the upper low 
will put the focus of precipitation along and behind the surface front 
over the southern 2/3rds of the state. Up north the surface front begins 
to lose its punch as it moves east into the Wasatch front Saturday 
evening. Not looking at nearly as much precipitation up north...though 
with a warm advection wraparound pattern setting up north of the 
closed low would expect a widespread event nonetheless. 


The next transitory upper ridge will move over the interior west 
early next week. From there the medium guidance does indicate a 
change in the pattern with the upper ridge retrograding back over 
the eastern Pacific. Shortwaves cresting this ridge will dig south out 
of western Canada and into the interior west by late next week. 
Unseasonably cold temperatures and snow a good possibility late in the 
forecast period. 




&& 


Aviation...lingering low level moisture near the slc terminal will 
result in a 20 percent chance of brief ceilings below 7000ft above ground level 
through 18z. Northwest winds will resume between 16 and 18z...but 
there is a 30 percent chance that variable/light southeast winds will 
continue until 19z. 


&& 


Slc watches/warnings/advisories... 
Utah...none. 
Wyoming...none. 


&& 


$$ 


Public...Conger 
aviation...Hogan 


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http://weather.Gov/saltlakecity (all lower case) 


For frequently asked questions about the area forecast discussion 
visit... 
http://weather.Gov/saltlakecity/general/afd_faqs.Php (all lower case)