National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

COZ205-272345-
COZ205-272345-
Colorado River Headwaters-
142 AM MDT Thu Aug 27 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
142 AM MDT Thu Aug 27 2026

.DISCUSSION...
Isolated showers and storms continue today and tomorrow, mainly 
over the higher terrain. Some heavier showers and storms are 
possible any may cause issues over susceptible areas and new burn 
scars. Despite that, critical fire weather conditions are not 
expected. Heading into the weekend, increase moisture and 
disturbances will bring a return to more widespread convection, 
clouds and precip keeping fire weather concerns at a minimum.

...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 (20-30%) until 1200, then partly 
                    cloudy (40-50%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....20 percent. 
Max temperature.....76-86 F. 
Min humidity........14-24%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent. 
15K Ft MSL Winds....Northwest 15 to 20 mph becoming west 10 to 15 
                    mph in the afternoon. 
Mixing Height.......1500 ft AGL until 1000, then 11000 ft AGL. 
Transport Winds.....Southwest 5 mph until 1200, then northwest. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....51-61 F. 
Max humidity........52-62%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent. 
15K Ft MSL Winds....West 10 to 15 mph increasing to 15 to 20 mph 
                    after midnight. 
Mixing Height.......9000 ft AGL until 1900. 500 ft AGL after 2000. 
Transport Winds.....West 5 to 10 mph until 2400, then south. 
Smoke dispersal.....Poor. 

.FRIDAY...
Sky/weather.........Partly cloudy (50-60%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....77-87 F. 
Min humidity........16-26%. 
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.................10 percent. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......2000 ft AGL until 1000, then 10500 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 73-83. Southwest winds 10 to 20 mph with gusts
to  35 mph. 
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
47-57. Highs 68-78. Southwest winds 10 to 20 mph with gusts to 
30 mph. 
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 45-55. Highs 67-77. Winds less than 15 mph. 
.TUESDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 68-78. 
.WEDNESDAY...Partly cloudy. Scattered thunderstorms and isolated
showers. Lows 45-55. Highs 70-80.