COZ205-271115-
COZ205-271115-
Colorado River Headwaters-
111 PM MDT Tue May 26 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
111 PM MDT Tue May 26 2026

...RED FLAG WARNING IN EFFECT WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR
COLORADO FIRE WEATHER ZONES 207 AND 290, AS WELL AS UTAH FIRE
WEATHER ZONES 486, 487 AND 490... 
...FIRE WEATHER WATCH IN EFFECT THURSDAY AFTERNOON THROUGH
THURSDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR
COLORADO FIRE WEATHER ZONES 207 AND 290, AS WELL AS UTAH FIRE
WEATHER ZONES 486, 487 AND 490... 

.DISCUSSION...
Scattered showers and storms will continue through the afternoon.
Drier flow and stronger surface level winds will arrive Wednesday
and will be in place through Friday. This will cause widespread 
critical fire weather conditions for that time period. Red Flag 
Warnings are in effect for Eastern Utah and the Four Corners area 
Wednesday, 1pm-8pm. The same area is currently under a Fire 
Weather Watch for Thursday, 1pm-8pm. 

...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.........Mostly cloudy (70-80%) until 2400, then partly 
                    cloudy (50-60%). Scattered showers and 
                    thunderstorms until 2400. 
Chc of lightning....40 percent. 
Min temperature.....37-47 F. 
Max humidity........72-87%. 
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....Southwest 10 to 15 mph. 
Mixing Height.......3500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Southeast 5 mph. 
Smoke dispersal.....Poor. 

.WEDNESDAY...
Sky/weather.........Partly cloudy (40-50%). Isolated showers. 
                    Isolated thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....66-76 F. 
Min humidity........20-30%. 
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....Southwest 10 to 15 mph. 
Mixing Height.......1000 ft AGL until 0900, then 11000 ft AGL. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....41-51 F. 
Max humidity........62-77%. 
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 increasing to southwest 15 to 
                    20 mph after midnight. 
Mixing Height.......10000 ft AGL until 1900. 1000 ft AGL after 
                    2000. 
Transport Winds.....Southeast 5 to 10 mph. 
Smoke dispersal.....Poor. 

.THURSDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly 
                    cloudy (30-40%). Scattered showers and isolated 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....72-82 F. 
Min humidity........13-23%. 
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....Southwest 10 to 15 mph. 
Mixing Height.......2000 ft AGL until 0900. 13500 ft AGL after 
                    1200. 
Transport Winds.....South 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 41-51. Highs 67-77. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 36-46. Highs 62-72. West winds 10 to 20 mph with gusts to 
30 mph. 
.SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows
34-44. Highs 67-77. Winds less than 15 mph. 
.MONDAY...Mostly clear. Isolated showers and thunderstorms. Lows
37-47. Highs 69-79. 
.TUESDAY...Mostly clear. Isolated showers and thunderstorms. Lows
38-48. Highs 70-80.