COZ205-201100-
COZ205-201100-
Colorado River Headwaters-
1246 PM MDT Tue May 19 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1246 PM MDT Tue May 19 2026

.DISCUSSION... 

Showers and thunderstorms are possible during the afternoon today
and tomorrow, mostly in the central and southern Colorado 
mountains, with showers persisting during the overnight hours. On 
Thursday showers and thunderstorms are possible, mostly north of 
I-70. A pattern shift this weekend will bring warmer and drier 
conditions. However, critical fire weather conditions are expected
to remain localized through the period. 

...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 (40-50%). Isolated showers. 
Chc of lightning....0 percent. 
Min temperature.....26-36 F. 
Max humidity........75-90%. 
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....Southwest 25 to 35 mph. 
Mixing Height.......6000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then east. 
Smoke dispersal.....Fair until 2100, then poor. 

.WEDNESDAY...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms. 
Chc of lightning....20 percent. 
Max temperature.....53-63 F. 
Min humidity........22-32%. 
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....Southwest 25 to 35 mph decreasing to 20 to 25 
                    mph in the afternoon. 
Mixing Height.......1500 ft AGL until 0900, then 9500 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%). 
Chc of lightning....0 percent. 
Min temperature.....28-38 F. 
Max humidity........59-74%. 
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 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Fair until 2100, then poor. 

.THURSDAY...
Sky/weather.........Partly cloudy (50-60%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....56-66 F. 
Min humidity........21-31%. 
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....Southwest 20 to 25 mph increasing to 25 to 35 
                    mph in the afternoon. 
Mixing Height.......1000 ft AGL until 0800. 8500 ft AGL after 0900. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then 20 to 25 
                    mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 29-39. Highs 54-64. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 31-41. Highs 60-70. Winds less than 15 mph. 
.SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows
33-43. Highs 67-77. Winds less than 15 mph. 
.MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms.
Lows 36-46. Highs 70-80. 
.TUESDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 38-48. Highs 66-76.