COZ205-261045-
COZ205-261045-
Colorado River Headwaters-
1233 PM MDT Tue Aug 25 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1233 PM MDT Tue Aug 25 2026

.DISCUSSION...
Moisture decreases this week, but enough remains in place to keep
isolated to scattered mountain showers and thunderstorms in the 
forecast each afternoon. The potential for localized heavy 
rainfall keeps flash flood and debris flow concerns elevated for 
newer burn scars and areas of susceptible terrain. Other concerns 
with afternoon convection include lightning and gusty outflow 
winds over 35 mph. Stronger afternoon wind gusts Friday may allow
for a return of localized critical fire weather conditions.


...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%). Isolated thunderstorms 
                    until 2400. Isolated showers. 
Chc of lightning....10 percent. 
Min temperature.....50-60 F. 
Max humidity........55-70%. 
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....Northwest 10 to 15 mph. 
Mixing Height.......6500 ft AGL until 2000, then 500 ft AGL. 
Transport Winds.....Northwest 5 mph until 2400, then east. 
Smoke dispersal.....Poor. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (40-50%). Isolated showers until 1200, 
                    then scattered showers and thunderstorms. 
Chc of lightning....20 percent. 
Max temperature.....76-86 F. 
Min humidity........16-26%. 
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 5 to 10 mph. 
Mixing Height.......1500 ft AGL until 1000, then 10000 ft AGL. 
Transport Winds.....South 5 mph until 1200, then west. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). 
Chc of lightning....0 percent. 
Min temperature.....50-60 F. 
Max humidity........53-63%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
15K Ft MSL Winds....Northwest 10 to 15 mph. 
Mixing Height.......8000 ft AGL until 1900. 500 ft AGL after 2000. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Poor. 

.THURSDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (40-50%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....77-87 F. 
Min humidity........16-26%. 
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.......2000 ft AGL until 1000. 10500 ft AGL after 
                    1200. 
Transport Winds.....Southwest 5 mph until 1200, then west. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
48-58. Highs 77-87. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 75-85. Southwest winds 10 to 20 mph with gusts
to  35 mph. 
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 48-58. Highs 70-80. Winds less than 15 mph. 
.MONDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 69-79. 
.TUESDAY...Partly cloudy. Scattered thunderstorms and isolated
showers. Lows 45-55. Highs 70-80.