National Weather Service United States Department of Commerce

COZ205-120100-
COZ205-120100-
Colorado River Headwaters-
300 AM MDT Sun Oct 11 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
300 AM MDT Sun Oct 11 2026

.DISCUSSION...

Widespread wetting rains will continue across the region today, 
as extra-tropical moisture moves across the region. Some strong 
thunderstorms are expected to develop with damaging winds, hail, 
and heavy rainfall. Flash flooding remains a concern around 
sensitive terrain. Winds will increase appreciably today, gusting 
to around 45 mph across much of eastern UT and western CO. 
Critical fire weather conditions are not expected to develop this 
week. Active weather persists until late week.

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


.TODAY...
Sky/weather.........Mostly cloudy (60-70%) until 1200, then partly 
                    cloudy (50-60%). Patchy fog until 1200. 
                    Scattered showers and isolated thunderstorms. 
Chc of lightning....20 percent. 
Max temperature.....60-70 F. 
Min humidity........35-45%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    southwest 10 to 15 mph with gusts to 40 mph in 
                    the afternoon. 
CWR.................30 percent. 
15K Ft MSL Winds....Southwest 40 to 50 mph. 
Mixing Height.......1500 ft AGL until 1000, then 6500 ft AGL. 
Transport Winds.....South 5 to 10 mph until 1200, then southwest 20 
                    to 25 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.TONIGHT...
Sky/weather.........Mostly cloudy (70-80%) until 2400, then partly 
                    cloudy (40-50%). Numerous showers until 2400. 
                    Isolated thunderstorms. Scattered showers after 
                    2400. 
Chc of lightning....20 percent. 
Min temperature.....39-49 F. 
Max humidity........69-84%. 
20-foot winds.......South winds 10 to 15 mph with gusts to 40 mph. 
CWR.................70 percent. 
15K Ft MSL Winds....Southwest 35 to 45 mph. 
Mixing Height.......1000 ft AGL. 
Transport Winds.....Southwest 10 to 15 mph. 
Smoke dispersal.....Poor. 

.COLUMBUS DAY...
Sky/weather.........Partly cloudy (40-50%). Scattered showers. 
                    Isolated thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....58-68 F. 
Min humidity........30-40%. 
20-foot winds.......Southwest winds 10 to 15 mph with gusts to 35 
                    mph. 
CWR.................20 percent. 
15K Ft MSL Winds....Southwest 30 to 40 mph. 
Mixing Height.......7000 ft AGL. 
Transport Winds.....Southwest 10 to 15 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.TUESDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 36-46. Highs 52-62. Southwest winds 10 to
20 mph with gusts to  30 mph. 
.WEDNESDAY...Numerous showers and isolated thunderstorms. Lows
31-41. Highs 43-53. Winds less than 15 mph. 
.THURSDAY...Mostly cloudy. Scattered showers and isolated
thunderstorms. Lows 27-37. Highs 46-56. Winds less than 15 mph. 
.FRIDAY...Mostly clear. Isolated showers. Lows 26-36. Highs
50-60. 
.SATURDAY...Clear. Isolated showers. Lows 28-38. Highs 53-63.