Weather

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fxus65 kslc 212126 
afdslc 


Area forecast discussion 
National Weather Service Salt Lake City Utah 
326 PM MDT Thursday Aug 21 2008 


Synopsis...a cold front will move through northern Utah this 
evening providing a day of cooler temperatures on Friday. High 
pressure ridge will build over the area on Saturday with high 
temperatures rebounding accordingly. Little in the way of dynamics to 
support precipitation through early next week. 


&& 


Discussion...a cold front is sinking southward across southern 
Idaho this afternoon. Only a few sprouts of cumulus are 
developing over higher terrain near the boundary indicating that 
there is not much moisture is associated with this feature. 
Therefore mostly clear skies with a light northerly breeze will 
prevail overnight in the cooler air mass. The front will make it 
about halfway through the state before running out of gas by early 
morning. Tomorrows temperatures will be 5 to 10 degrees cooler 
across the north with less of a change in the southern half of 
the forecast area. Will see a bit more afternoon cloud development 
tomorrow across the north but little if any precipitation. 


The upper level ridge begins to build back in on Saturday and this 
should promote isolated thunderstorms over the mountains. The 
activity is expected to be slightly more widespread on Sunday...but 
in neither case does it look very promising for rainfall so have 
kept chance of precipitation low. Weather gets more interesting early next 
week as another significant piece of energy crosses the northern 
rockies. Models struggling to agree on a solution with this 
system...but it appears like it will push a stronger cold front 
than tonights version through northern Utah on Tuesday night or 
Wednesday. At this point it looks like another dry front if it 
does materialize. 


&& 


Aviation...VFR conditions will continue through the evening at the 
slc terminal. Winds may stay westerly longer than usual in the 21z 
to 23z time frame...before turning more to the north through the 
evening. Southeasterly drainage winds may occur at times between 09z 
and 14z...but these winds will likely be lighter than usual...and 
there is a 40 percent chance that winds will stay from the north 
through the entire night. 


&& 


Fire weather...a dry cold front will continue to move through 
northern Utah late this afternoon into this evening. Gusty south 
winds will continue this afternoon ahead of the cold front across 
the area. As the cold front passes through the northern portion 
of fire weather zone 420 this afternoon and early evening...winds 
will shift to the northwest and humidities will increase. Across the 
remainder of the warned area...southerly winds and low humidities 
will continue to create severe fire weather conditions into the 
evening. 


&& 


Slc watches/warnings/advisories... 
Utah...red flag warning until 9 PM Thursday for fire weather zones 
420...423...434 and 435. 
Wyoming...none. 


&& 


$$ 


Public...Pomeroy 
fire weather...Kruse 
aviation...schoening 


For more information from National oceanic and atmospheric administration/S National Weather Service visit... 
http://weather.Gov/saltlakecity (all lower case)