National Weather Service United States Department of Commerce

COZ293-211145-
Gunnison Basin Forecast Area-
144 PM MDT Thu Sep 20 2018

.DISCUSSION...Localized critical fire weather conditions will
occur the rest of this afternoon at times across far northwest
Colorado near the Wyoming border. Breezy conditions are occurring
behind the trough as drier air continues to move in. Isolated
showers are also lingering behind this trough over the central
mountain corridor and should dissipate late this afternoon. Next
chance for critical fire weather conditions may occur late Sunday
and Monday as a trough moves through with isolated storms also
possible, but conditions look marginal at this time.

...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.........Mostly clear (10-20%). 
Min temperature.....35-45 F. 
Max humidity........49-59%. 
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........5 moderate. 
15K Ft MSL Winds....North 15 to 20 mph, becoming west 5 to 10 mph 
                    after midnight. 
Mixing Height.......6000 ft AGL until 2100, then 2000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    northeast. 
Smoke dispersal.....Good until 2100, then poor. 

.FRIDAY...
Sky/weather.........Mostly sunny (20-30%). 
Max temperature.....60-70 F. 
Min humidity........12-17%. 
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........6 high. 
15K Ft MSL Winds....West 10 to 15 mph. 
Mixing Height.......3000 ft AGL until 1100, then 11000 ft AGL. 
Transport Winds.....Southeast 5 mph until 1200, then southwest. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FRIDAY NIGHT...
Sky/weather.........Mostly clear (10-20%). 
Min temperature.....38-48 F. 
Max humidity........48-58%. 
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........6 high. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......8500 ft AGL until 2000. 2500 ft AGL after 2100. 
Transport Winds.....Southwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Fair until 2100, then poor. 

.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly 
                    cloudy (30-40%). 
Max temperature.....63-73 F. 
Min humidity........10-15%. 
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........6 high. 
15K Ft MSL Winds....West 15 to 20 mph, decreasing to 10 to 15 mph 
                    in the afternoon. 
Mixing Height.......2000 ft AGL until 1000. 11000 ft AGL after 
                    1200. 
Transport Winds.....South 5 mph until 1200, then west. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows 35-45. Highs 66-76. Winds less than
15 mph. 
.MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
37-47. Highs 61-71. Winds less than 15 mph. 
.TUESDAY...Partly cloudy. Lows 33-43. Highs 59-69. Winds less
than 15 mph. 
.WEDNESDAY...Mostly clear. Lows 31-41. Highs 61-71. 
.THURSDAY...Mostly clear. Lows 33-43. Highs 63-73. 

$$