National Weather Service United States Department of Commerce

Light snow moves across the N.Colorado Mountains Tonight and Early Tuesday

A quick moving Pacific storm will pass across northern Colorado tonight into Tuesday, bringing some light valley rain and mountain snow to NW Colorado. Travel impacts are possible in the mountains overnight. Read More >

COZ294-011215-
Southwest Colorado Upper West Forecast Area-
206 PM MDT Tue Oct 31 2017

.DISCUSSION...Snow and rain showers will continue this afternoon 
across the southern mountains before ending overnight as a storm 
system exists the area. Temperatures will run 2 to 3 degrees below
average today and tomorrow before rebounding by mid week. Winds 
will increase from the west southwest during the afternoon hours. 
Little chance for precipitation is expected until early next week 
as temperatures hang near normal.





...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...

.Tonight...
Sky/weather.........Partly cloudy (30-40%). 
Min temperature.....29-39 F. 
Max humidity........58-73%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
LAL.................1.
Haines Index........2 very low. 
15K Ft MSL Winds....Northwest 30 to 40 mph. 
Mixing Height.......2000 ft AGL. 
Transport Winds.....West 5 to 10 mph. 
Smoke dispersal.....Fair until 2100, then poor. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). 
Max temperature.....46-56 F. 
Min humidity........31-41%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................0 percent. 
LAL.................1.
Haines Index........2 very low. 
15K Ft MSL Winds....West 25 to 35 mph. 
Mixing Height.......4500 ft AGL. 
Transport Winds.....West 10 to 15 mph until 1200, then 20 to 25 
                    mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). 
Min temperature.....29-39 F. 
Max humidity........70-85%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
LAL.................1.
Haines Index........2 very low. 
15K Ft MSL Winds....West 25 to 35 mph. 
Mixing Height.......2500 ft AGL. 
Transport Winds.....Southwest 10 to 15 mph. 
Smoke dispersal.....Good until 2100. Poor after 2400. 

.THURSDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly 
                    sunny (20-30%). 
Max temperature.....46-56 F. 
Min humidity........35-45%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph, becoming 
                    southwest 10 to 15 mph in the afternoon. 
                    Localized gusts up to 30 mph. 
CWR.................0 percent. 
LAL.................1.
Haines Index........2 very low. 
15K Ft MSL Winds....West 25 to 35 mph, decreasing to 20 to 25 mph 
                    in the afternoon. 
Mixing Height.......5000 ft AGL. 
Transport Winds.....Southwest 10 to 15 mph. 
Smoke dispersal.....Poor until 1200, then good. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Mostly clear. Lows 30-40. Highs 48-58. South winds
10 to 20 mph with gusts up to 30 mph. 
.SATURDAY...Partly cloudy. Lows 33-43. Highs 50-60. South winds
10 to 20 mph with gusts up to 30 mph. 
.SUNDAY...Mostly cloudy. Isolated showers. Lows 33-43. Highs
48-58. Southwest winds 10 to 20 mph with gusts up to 30 mph. 
.MONDAY...Mostly cloudy. Numerous showers. Lows 30-40. Highs
46-56. 
.TUESDAY...Mostly cloudy. Scattered showers. Lows 28-38. Highs
48-58. 

$$