COZ205-141230-
COZ205-141230-
Colorado River Headwaters-
219 PM MDT Sun Sep 13 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
219 PM MDT Sun Sep 13 2026

.DISCUSSION...Daily scattered to widespread showers and storms 
highlight the forecast for the next seven days. Breezy winds are 
also anticipated, with gusts upwards of 35 mph. Due to the influx 
of moisture, the potential for critical fire weather conditions 
remains low. However, due to the dry antecedent conditions, 
lightning starts are possible at least initially. 



...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 (50-60%) until 2400, then cloudy 
                    (80-90%). Scattered showers until 2400. 
                    Scattered thunderstorms. Showers after 2400. 
Chc of lightning....50 percent. 
Min temperature.....48-58 F. 
Max humidity........78-93%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................90 percent. 
15K Ft MSL Winds....Southwest 25 to 35 mph increasing to 30 to 40 
                    mph after midnight. 
Mixing Height.......5500 ft AGL until 1900, then 1000 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor. 

.MONDAY...
Sky/weather.........Cloudy (80-90%) until 1200, then partly cloudy 
                    (50-60%). Showers until 1200. Scattered 
                    thunderstorms. Scattered showers after 1200. 
Chc of lightning....50 percent. 
Max temperature.....64-74 F. 
Min humidity........40-50%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................90 percent. 
15K Ft MSL Winds....West 35 to 45 mph decreasing to 30 to 40 mph in 
                    the afternoon. 
Mixing Height.......2000 ft AGL until 1100, then 6000 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.MONDAY NIGHT...
Sky/weather.........Partly cloudy (50-60%) until 2400, then mostly 
                    cloudy (70-80%). Scattered showers and 
                    thunderstorms until 2400, then numerous showers 
                    and isolated thunderstorms. 
Chc of lightning....50 percent. 
Min temperature.....45-55 F. 
Max humidity........71-86%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 25 mph in the evening. 
CWR.................70 percent. 
15K Ft MSL Winds....Southwest 20 to 30 mph. 
Mixing Height.......4000 ft AGL until 1900, then 1000 ft AGL. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Poor. 

.TUESDAY...
Sky/weather.........Partly cloudy (50-60%). Scattered showers and 
                    isolated thunderstorms until 1200, then 
                    numerous showers and scattered thunderstorms. 
Chc of lightning....40 percent. 
Max temperature.....67-77 F. 
Min humidity........38-48%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................50 percent. 
15K Ft MSL Winds....Southwest 20 to 25 mph. 
Mixing Height.......1500 ft AGL until 1000, then 7000 ft AGL. 
Transport Winds.....South 5 mph until 1200, then southwest 10 to 15 
                    mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 65-75. Winds less than 15 mph. 
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 64-74. Winds less than 15 mph. 
.FRIDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 42-52. Highs 63-73. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 39-49. Highs 63-73. 
.SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows
37-47. Highs 62-72.