747 
fxus65 klkn 050938 
afdlkn 


Area forecast discussion 
National Weather Service Elko Nevada 
238 am PDT Sat Jul 5 2008 


Synopsis...a low pressure system will move through northern Nevada 
bringing slightly cooler temperatures to the region and a slight 
risk of thunderstorms to northeast Nevada during the Independence day 
weekend. High pressure is expected to rebuild over the Great Basin 
next week resulting in hot temperatures and dry weather. 
&& 


Short term...today through Sunday...infrared imagery shows that most 
cloudiness associated with the cold front today has exited east of 
the state this morning. Short term models in pretty good agreement 
on latest runs. The Great Basin will be under the influence of weak 
low pressure through Sunday as high pressure continues to dissolve. 
Lower levels will be stable today with Post-frontal short-wave 
ridging pushing across the area. Precipitable water values have 
fallen well-below 0.5 inches. One more strong shortwave will pass 
through northern Nevada...on Sunday...with precipitable water values increasing to 
around 0.75 inches accompanying low-level convergence. GFS and NAM 
both show a 70 knots jet feature pushing across northern Nevada late Saturday and 
into Sunday. This next system is lacking any strong pressure gradient 
with dry westerly flow on Saturday turning more northwest on Sunday. 
Wind will not be an issue. Forecast looks good for placement of 
isolated thunderstorms primarily over NE Nevada. Still no significant 
moisture source...so ts will be essentially dry. High temperatures 
will be a relatively cool 90 degrees Saturday and Sunday before ridge 
begins to build...however still above-normal. Lw 


Long term...Sunday night through Friday. A ridge will build off the 
coast of California and will last until the end of the week when 
a trough of low pressure begins to approach the West Coast on 
Friday. This will allow high temperatures to reach into the upper 
90s across the County Warning Area. Lows will drop into the 50s. Ippi 
&& 


Aviation...VFR conditions will prevail across the County Warning Area with the 
exception of some isolated thunderstorm development along the 
northern border this afternoon and evening. 
&& 


Fire weather...no proposed fire weather issues for the next couple 
days. Low pressure will hang over the area through Sunday. Winds 
will be relatively light and temperatures slightly above- 
normal...I.E. Upper 80 to middle 90s. Isolated thunderstorms are 
possible Sunday afternoon across zone 452 and northern 455. Relative humidity 
levels will continue to fall into the single digits Sat and Sun 
afternoon across central Nevada. 
&& 


Lkn watches/warnings/advisories... 


&& 


$$