COZ205-231330-
COZ205-231330-
Colorado River Headwaters-
320 PM MDT Sat Aug 22 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
320 PM MDT Sat Aug 22 2026

.DISCUSSION...
Monsoonal moisture has been advected into the region today with 
widely scattered afternoon and evening showers and thunderstorms
being observed. Localized heavy rainfall raise concern for flash
flooding a debris flows, particularly on recent burn scars. Beyond
Saturday, storm coverage will become more isolated to scattered
and confined to the higher terrain. Primary threats with these
storms continue to be gusty outflows, lightning, and heavy
rainfall. Critical fire weather conditions continue to be out of
the forecast for the time being. 

...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 (40-50%). Scattered thunderstorms until 
                    2400. Scattered showers. 
Chc of lightning....50 percent. 
Min temperature.....52-62 F. 
Max humidity........64-79%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 20 mph in the evening. 
CWR.................30 percent. 
15K Ft MSL Winds....West 15 to 20 mph increasing to 20 to 25 mph 
                    after midnight. 
Mixing Height.......5000 ft AGL until 1900. 1000 ft AGL after 2000. 
Transport Winds.....South 5 mph. 
Smoke dispersal.....Poor. 

.SUNDAY...
Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly 
                    cloudy (60-70%). Isolated showers until 1200, 
                    then scattered showers and thunderstorms. 
Chc of lightning....40 percent. 
Max temperature.....74-84 F. 
Min humidity........24-34%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph in the afternoon. 
CWR.................30 percent. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......1500 ft AGL until 1000, then 8000 ft AGL. 
Transport Winds.....Southwest 5 mph until 1200, then west 10 to 15 
                    mph. 
Smoke dispersal.....Poor until 1200, then good until 1500, then 
                    fair. 

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and 
                    isolated thunderstorms until 2400, isolated 
                    showers after 2400. 
Chc of lightning....20 percent. 
Min temperature.....52-62 F. 
Max humidity........55-70%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 20 mph in the evening. 
CWR.................10 percent. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......6000 ft AGL until 1900. 500 ft AGL after 2000. 
Transport Winds.....West 5 to 10 mph until 2400, then southeast. 
Smoke dispersal.....Poor. 

.MONDAY...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and 
                    thunderstorms after 1200. 
Chc of lightning....30 percent. 
Max temperature.....76-86 F. 
Min humidity........19-29%. 
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....West 10 to 15 mph. 
Mixing Height.......1000 ft AGL until 0900. 8500 ft AGL after 1000. 
Transport Winds.....West 5 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.TUESDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 48-58. Highs 75-85. Winds less than 15 mph. 
.WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 47-57. Highs 76-86. Winds less than 15 mph. 
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 47-57. Highs 76-86. Winds less than 15 mph. 
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
48-58. Highs 77-87. 
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 49-59. Highs 77-87.