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fxus65 kcys 230950 
afdcys 


Area forecast discussion 
National Weather Service Cheyenne Wyoming 
250 am MST sun Nov 23 2008 


Short term...today through Monday night...upper trough moving across region 
mainly this morning. Leading piece of energy has moved quickly east 
across region overnight...taking the majority of the clouds with it. 
Still expecting the clouds/few showers over southern Montana to drop southeastward 
across area later this morning. Cold front moving into far northern 
parts of area at 3 am...should be through most spots by about middle 
morning. Winds should pick up behind the front...but remain below 
any hilite criteria. Main chance of precipitation is in the mountains through midday. 
Tonight should see clearing skies and decrsg winds in the eveng. 
Large upper ridge then shifts east into the region for Monday into Monday 
night with warmer air spilling back into the area on Monday. 


Long term...Tuesday through Saturday... 


Tuesday...another mild day with high temperatures in the 40s west 
with middle 50s to middle 60s east as the ridge axis moves into Nebraska. 


Wednesday...GFS now shows non-descript upper flow across Wyoming 
with increase in low and middle level moisture across Carbon 
County...thus chance of snow there. Still relatively mild again with 
1000-500 mb thicknesses near 5520 meters. 


Thanksgiving...colder day in the wake of the cold frontal passage. 
It now appears that most of the snow will remain south of Wyoming 
closer to the closed upper trough over southern Colorado and with 
Wyoming in the drier North Branch of the upper trough over North 
Dakota. 


Friday...looks like another cool day with 1000-500 mb thicknesses 
near 5320 meters and high temperatures in the 30s. Will be a 
relatively quiet day for traveling or shopping as our counties will 
lie in the dry north flow aloft associated with the trough aloft 
over Minnesota. 


Saturday...our counties will be in the col aloft with the closed 
upper trough over the southwest United States too far west to have 
any significant influence on Wyoming and Nebraska weather. Continued 
cool with high temperatures in the 30s to lower 40s with 1000-500 mb 
thicknesses near 5370 meters. Rubin 


&& 


Aviation...VFR through Monday except for a few brief MVFR conds in snow 
showers over the mountains through midday today. 


&& 


Cys watches/warnings/advisories... 
Wyoming...none. 
NE...none. 


&& 


$$ 


Long term...Rubin