COZ205-131045-
COZ205-131045-
Colorado River Headwaters-
1238 PM MDT Sat Sep 12 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1238 PM MDT Sat Sep 12 2026

.DISCUSSION...
This weekend, gusts will be upwards of 35 mph for much of the
area. However, an influx of moisture will negate the potential for
widespread critical fire weather conditions due to rising RH.
Precipitation chances will be isolated today and transition to
scattered by Sunday afternoon/evening. More widespread
precipitation chances make a return Monday for much of the region. 

...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 (30-40%). Isolated thunderstorms 
                    until 2400. Isolated showers. 
Chc of lightning....10 percent. 
Min temperature.....49-59 F. 
Max humidity........59-74%. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 25 mph in the evening. 
CWR.................10 percent. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......7000 ft AGL until 1900. 500 ft AGL after 2000. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor. 

.SUNDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (40-50%). Isolated showers. Isolated 
                    thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....73-83 F. 
Min humidity........25-35%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph increasing to 30 mph in the 
                    afternoon. 
CWR.................10 percent. 
15K Ft MSL Winds....Southwest 20 to 25 mph. 
Mixing Height.......500 ft AGL until 0900. 6500 ft AGL after 1000. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then 15 to 20 
                    mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy (50-60%) until 2400, then mostly 
                    cloudy (70-80%). Scattered showers until 2400. 
                    Scattered thunderstorms. Showers after 2400. 
Chc of lightning....50 percent. 
Min temperature.....46-56 F. 
Max humidity........80-95%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................90 percent. 
15K Ft MSL Winds....Southwest 25 to 35 mph increasing to 30 to 40 
                    mph after midnight. 
Mixing Height.......3500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....South 5 to 10 mph. 
Smoke dispersal.....Poor. 

.MONDAY...
Sky/weather.........Mostly cloudy (70-80%). Showers and isolated 
                    thunderstorms until 1200, then numerous showers 
                    and scattered thunderstorms. 
Chc of lightning....50 percent. 
Max temperature.....64-74 F. 
Min humidity........44-54%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................90 percent. 
15K Ft MSL Winds....Southwest 30 to 40 mph becoming west 25 to 35 
                    mph in the afternoon. 
Mixing Height.......2500 ft AGL until 1100, then 6000 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 43-53. Highs 64-74. Winds less than 15 mph. 
.WEDNESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 43-53. Highs 64-74. Winds less than 15 mph. 
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 42-52. Highs 63-73. Winds less than 15 mph. 
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 39-49. Highs 64-74. 
.SATURDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 38-48. Highs 65-75.