Colorado River Headwaters (COZ205) - Fire Weather Forecast

COZ205-212330-
COZ205-212330-
Colorado River Headwaters-
116 AM MDT Sun Jun 21 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
116 AM MDT Sun Jun 21 2026

...RED FLAG WARNING IN EFFECT MONDAY AFTERNOON THROUGH MONDAY
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... 

.DISCUSSION...

Critical fire weather conditions become more marginal through the
week, focused over higher elevations where winds will be most 
likely to meet Red Flag thresholds. Peak gusts will generally be 
25-30 mph throughout the week in the locations. Relative humidity 
remains below 15% across most of the region though with single 
digit percentages expected in most valleys through Thursday.

...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 sunny (10-20%). 
Chc of lightning....0 percent. 
Max temperature.....73-83 F. 
Min humidity........11-16%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph in the afternoon. Localized 
                    gusts up to 30 mph. 
CWR.................0 percent. 
15K Ft MSL Winds....West 20 to 30 mph decreasing to 20 to 25 mph in 
                    the afternoon. 
Mixing Height.......500 ft AGL until 0800. 13000 ft AGL after 0900. 
Transport Winds.....West 5 to 10 mph until 1200, then 20 to 25 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.TONIGHT...
Sky/weather.........Mostly clear (20-30%). 
Chc of lightning....0 percent. 
Min temperature.....47-57 F. 
Max humidity........40-50%. 
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. 
Mixing Height.......11000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Very good until 2100, then poor. 

.MONDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....0 percent. 
Max temperature.....76-86 F. 
Min humidity........8-13%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph with gusts to 30 mph in the 
                    afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......500 ft AGL until 0800. 14000 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...
.TUESDAY...Clear. Lows 45-55. Highs 78-88. West winds 10 to
20 mph with gusts to  30 mph. 
.WEDNESDAY...Mostly clear. Lows 45-55. Highs 77-87. West winds
10 to 20 mph with gusts to  30 mph. 
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 46-56. Highs 76-86. West winds 10 to 20 mph with gusts to 
30 mph. 
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 74-84. 
.SATURDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 45-55. Highs 74-84.