COZ205-121045-
COZ205-121045-
Colorado River Headwaters-
1243 PM MDT Tue Aug 11 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1243 PM MDT Tue Aug 11 2026

.DISCUSSION...

Moisture continues to increase over the coming days, but 
relatively dry low-levels persist today. Storms are still expected
to develop, but expect the main threats to be dry lightning and 
gusty outflow winds. Wetting rain becomes more likely tomorrow, 
and especially Thursday and Friday. Temperatures will trend
downwards through the work week.

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


.REST OF TODAY...
Sky/weather.........Partly cloudy (50-60%). Isolated showers and 
                    thunderstorms. 
Chc of lightning....20 percent. 
Max temperature.....79-89 F. 
Min humidity........19-29%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent. 
15K Ft MSL Winds....West 10 to 15 mph. 
Mixing Height.......10000 ft AGL. 
Transport Winds.....West 5 to 10 mph. 
Smoke dispersal.....Good. 

.TONIGHT...
Sky/weather.........Partly cloudy (50-60%). Isolated thunderstorms 
                    until 2400. Isolated showers. 
Chc of lightning....10 percent. 
Min temperature.....52-62 F. 
Max humidity........61-76%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent. 
15K Ft MSL Winds....West 10 to 15 mph. 
Mixing Height.......8000 ft AGL until 2000, then 500 ft AGL. 
Transport Winds.....Northeast 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Poor. 

.WEDNESDAY...
Sky/weather.........Partly cloudy (50-60%) until 1200, then mostly 
                    cloudy (70-80%). Isolated thunderstorms until 
                    1200. Scattered showers. Scattered 
                    thunderstorms after 1200. 
Chc of lightning....50 percent. 
Max temperature.....76-86 F. 
Min humidity........25-35%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................70 percent. 
15K Ft MSL Winds....West 10 to 15 mph. 
Mixing Height.......1500 ft AGL until 1000, then 5500 ft AGL until 
                    1700, then 3000 ft AGL. 
Transport Winds.....West 5 mph. 
Smoke dispersal.....Poor until 1200, then fair until 1500, then 
                    poor. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 46-56. Highs 69-79. Winds less than 15 mph. 
.FRIDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 45-55. Highs 67-77. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 69-79. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 71-81. 
.MONDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 73-83.