COZ205-181430-
COZ205-181430-
Colorado River Headwaters-
424 PM MDT Fri Jul 17 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
424 PM MDT Fri Jul 17 2026

.DISCUSSION...
Daily showers and storms are expected each afternoon and evening
through the weekend. These showers will be capable of producing 
gusty winds up to 45 mph, small hail and heavy rainfall. The heavy
rain could cause debris flows especially on the recent burn 
scars. There is a chance that one or more outflow boundaries will 
move through a given area. Erratic direction and rapid increase in
wind speed can be expected with these outflows. 


...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 (40-50%). Scattered showers and 
                    thunderstorms until 2400. 
Chc of lightning....30 percent. 
Min temperature.....52-62 F. 
Max humidity........63-78%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................30 percent. 
15K Ft MSL Winds....Northeast 5 to 10 mph. 
Mixing Height.......8000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Poor. 

.SATURDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (50-60%). Isolated showers and 
                    thunderstorms until 1200, then scattered 
                    showers and thunderstorms. 
Chc of lightning....40 percent. 
Max temperature.....78-88 F. 
Min humidity........21-31%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................40 percent. 
15K Ft MSL Winds....Northeast 5 to 10 mph. 
Mixing Height.......2500 ft AGL until 1000, then 10500 ft AGL. 
Transport Winds.....Northeast 5 mph. 
Smoke dispersal.....Poor until 0900. Fair after 1200. 

.SATURDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and 
                    isolated thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....55-65 F. 
Max humidity........56-71%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................30 percent. 
15K Ft MSL Winds....East 5 to 10 mph shifting to the south after 
                    midnight. 
Mixing Height.......7500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Southeast 5 mph. 
Smoke dispersal.....Poor. 

.SUNDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then mostly 
                    cloudy (60-70%). Scattered showers and 
                    thunderstorms after 1200. 
Chc of lightning....50 percent. 
Max temperature.....79-89 F. 
Min humidity........21-31%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent. 
15K Ft MSL Winds....Northeast 5 to 10 mph. 
Mixing Height.......1500 ft AGL until 0900, then 10000 ft AGL. 
Transport Winds.....East 5 mph until 1200, then north. 
Smoke dispersal.....Poor until 0900. Fair after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Partly cloudy. Numerous showers and thunderstorms. Lows
52-62. Highs 76-86. Winds less than 15 mph. 
.TUESDAY...Partly cloudy. Numerous showers and thunderstorms.
Lows 52-62. Highs 80-90. Winds less than 15 mph. 
.WEDNESDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 51-61. Highs 75-85. Winds less than 15 mph. 
.THURSDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 50-60. Highs 72-82. 
.FRIDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
50-60. Highs 73-83.