COZ205-140000-
COZ205-140000-
Colorado River Headwaters-
200 AM MDT Thu Aug 13 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
200 AM MDT Thu Aug 13 2026

.DISCUSSION...

Elevated moisture keeps widespread critical fire weather 
conditions out of the forecast through at least the end of the 
week, possibly beyond. Coverage of shower and thunderstorm 
activity will peak today. Localized heavy rainfall may pose a 
threat of flash flooding and debris flows, especially over recent 
burn scars. Additional concerns with these storms include 
lightning and gusty outflows. Daytime highs will continue to cool 
through Friday before warming up again through the weekend and 
into next 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 (70-80%). Isolated thunderstorms 
                    until 1200. Numerous showers. Numerous 
                    thunderstorms after 1200. 
Chc of lightning....70 percent. 
Max temperature.....71-81 F. 
Min humidity........34-44%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................80 percent. 
15K Ft MSL Winds....Southwest 15 to 20 mph. 
Mixing Height.......5500 ft AGL. 
Transport Winds.....South 5 mph until 1200, then southwest 10 to 15 
                    mph. 
Smoke dispersal.....Poor until 0900. Fair after 1200. 

.TONIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly 
                    cloudy (50-60%). Numerous showers and scattered 
                    thunderstorms until 2400, then scattered 
                    showers and isolated thunderstorms. 
Chc of lightning....50 percent. 
Min temperature.....47-57 F. 
Max humidity........75-90%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................50 percent. 
15K Ft MSL Winds....Southwest 15 to 20 mph. 
Mixing Height.......3500 ft AGL until 2000, then 500 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Smoke dispersal.....Poor. 

.FRIDAY...
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.....71-81 F. 
Min humidity........32-42%. 
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....Southwest 15 to 20 mph. 
Mixing Height.......3000 ft AGL until 1100, then 7000 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Smoke dispersal.....Poor until 1200, then good until 1500, then 
                    fair. 

.FORECAST FOR DAY 3 THROUGH 7...
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 69-79. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 71-81. Winds less than 15 mph. 
.MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
46-56. Highs 72-82. Winds less than 15 mph. 
.TUESDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 47-57. Highs 74-84. 
.WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 48-58. Highs 75-85.