Colorado River Headwaters (COZ205) - Fire Weather Forecast

COZ205-231130-
COZ205-231130-
Colorado River Headwaters-
123 PM MDT Mon Jun 22 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
123 PM MDT Mon Jun 22 2026

...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 8 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO
FIRE WEATHER ZONES 207, 290, 291, 292, 293, 294 AND 295 BELOW
9000 FEET... 
...RED FLAG WARNING IN EFFECT FROM NOON UNTIL 10 PM MDT TUESDAY
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE
WEATHER ZONES 201, 205 BELOW 8000 FEET, 207, 290, 291, 292, 293,
294 AND 295 BELOW 9000 FEET, AS WELL AS UTAH FIRE WEATHER ZONE
491... 

.DISCUSSION...
Marginal fire weather conditions expected today and tomorrow.
Tomorrow's conditions expand into southeast Utah and zones along
the Divide where fuels are critical. Relative humidities may fall
to around 5% in valleys on these days. Dry thunderstorm concerns
arise on Wednesday, lasting through Friday. Higher elevations have
a better chance of wetting rain. Winds are expected to strengthen
on Saturday, leading to more widespread fire weather concerns. 

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


...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM MDT TUESDAY FOR
GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...

.TONIGHT...
Sky/weather.........Mostly clear (10-20%). Patchy smoke. 
Chc of lightning....0 percent. 
Min temperature.....48-58 F. 
Max humidity........29-39%. 
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....West 20 to 25 mph. 
Mixing Height.......12500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Smoke dispersal.....Very good until 2100, then poor. 

.TUESDAY...
Sky/weather.........Mostly sunny (10-20%). Patchy smoke. 
Chc of lightning....0 percent. 
Max temperature.....80-90 F. 
Min humidity........5-10%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph with gusts to 35 mph in the 
                    afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......1000 ft AGL until 0900. 15000 ft AGL after 
                    1000. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.TUESDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). Patchy smoke. 
Chc of lightning....0 percent. 
Min temperature.....49-59 F. 
Max humidity........33-43%. 
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....West 15 to 20 mph increasing to 20 to 25 mph 
                    after midnight. 
Mixing Height.......12000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....West 10 to 15 mph until 2400, then south 5 mph. 
Smoke dispersal.....Very good until 2100, then poor. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). 
Chc of lightning....0 percent. 
Max temperature.....79-89 F. 
Min humidity........8-13%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph with gusts to 35 mph in the 
                    afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......500 ft AGL until 0800. 13500 ft AGL after 1100. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 47-57. Highs 71-81. Winds less than 15 mph. 
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 43-53. Highs 72-82. Southwest winds 10 to 20 mph with gusts
to  35 mph. 
.SATURDAY...Windy. Mostly clear. Isolated showers and
thunderstorms. Lows 46-56. Highs 73-83. Southwest winds 20 to
30 mph with gusts to  55 mph. 
.SUNDAY...Mostly clear. Lows 44-54. Highs 69-79. 
.MONDAY...Clear. Lows 40-50. Highs 68-78.