Lower Colorado River (COZ203) - Fire Weather Forecast

COZ203-301215-
COZ203-301215-
Lower Colorado River-
204 PM MDT Mon Sep 29 2025

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
204 PM MDT Mon Sep 29 2025

.DISCUSSION...

Mountain showers will continue tomorrow, with stronger winds 
ahead of a passing disturbance. Non zero chances for wetting rains
continue. Critical fire weather conditions are not expected. A 
brief quiet spell returns Wednesday and Thursday before active 
weather conditions return Friday onward, with additional rain 
expected.

...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%). 
Chc of lightning....0 percent. 
Min temperature.....46-56 F. 
Max humidity........60-75%. 
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....South 15 to 20 mph increasing to southwest 20 
                    to 25 mph after midnight. 
Mixing Height.......7000 ft AGL until 1900, then 2500 ft AGL. 
Transport Winds.....Southwest 5 mph until 2400, then southeast. 
Smoke dispersal.....Poor. 

.TUESDAY...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....66-76 F near 6000 feet 
                    58-68 F near 8000 feet. 
Min humidity........25-35%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph. 
CWR.................10 percent. 
15K Ft MSL Winds....Southwest 20 to 30 mph. 
Mixing Height.......3500 ft AGL until 1100, then 9500 ft AGL. 
Transport Winds.....South 5 to 10 mph until 1200, then southwest 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). 
Chc of lightning....0 percent. 
Min temperature.....45-55 F. 
Max humidity........58-73%. 
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....Southwest 20 to 25 mph. 
Mixing Height.......7000 ft AGL until 1900, then 2500 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Poor. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20%). 
Chc of lightning....0 percent. 
Max temperature.....67-77 F near 6000 feet 
                    59-69 F near 8000 feet. 
Min humidity........21-31%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................0 percent. 
15K Ft MSL Winds....Southwest 20 to 25 mph. 
Mixing Height.......2500 ft AGL until 1000, then 7500 ft AGL. 
Transport Winds.....South 5 mph until 1200, then southwest. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Clear. Lows 45-55. Highs 72-82. Winds less than
15 mph. 
.FRIDAY...Mostly clear. Isolated showers. Lows 47-57. Highs
71-81. Southwest winds 10 to 20 mph with gusts to  25 mph. 
.SATURDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 43-53. Highs 62-72. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
40-50. Highs 62-72. 
.MONDAY...Mostly clear. Isolated showers and thunderstorms. Lows
41-51. Highs 65-75.