National Weather Service United States Department of Commerce

 

COZ201-030115-
COZ201-030115-
Routt Forecast Area-
315 AM MDT Sat Aug 2 2025

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
315 AM MDT Sat Aug 2 2025

...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO
FIRE WEATHER ZONES 200, 202, 203, 207 AND 290, AS WELL AS UTAH
FIRE WEATHER ZONES 487, 490 AND 491... 

.DISCUSSION...
Critical fire weather conditions will occur over the next several
days as very dry air moves in as do some windy conditions. Gusty 
winds and low humdities are expected today as wind gusts reach 30 
mph and humdities drop to the single digits/low teens. Red Flag 
Warnings remain in effect for much of eastern Utah and western 
Colorado. Many days next week will also see low humdities and 
gusty winds so critical fire weather conditions will be possible.

...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.........Partly cloudy (40-50%). Areas of smoke until 
                    1200. Isolated showers and thunderstorms until 
                    1200, then scattered showers and thunderstorms. 
Chc of lightning....40 percent. 
Max temperature.....69-79 F. 
Min humidity........17-27%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    southwest 10 to 15 mph in the afternoon. 
                    Localized gusts up to 30 mph. 
CWR.................20 percent. 
15K Ft MSL Winds....Southwest 15 to 20 mph increasing to 20 to 30 
                    mph in the afternoon. 
Mixing Height.......1500 ft AGL until 0900. 14000 ft AGL after 
                    1100. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then 20 to 25 
                    mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....20 percent. 
Min temperature.....44-54 F. 
Max humidity........50-60%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................20 percent. 
15K Ft MSL Winds....West 20 to 30 mph. 
Mixing Height.......11000 ft AGL until 1900. 1500 ft AGL after 
                    2000. 
Transport Winds.....Southwest 5 to 10 mph until 2400, then south. 
Smoke dispersal.....Good until 2100, then poor. 

.SUNDAY...
Sky/weather.........Mostly sunny (20-30%). 
Chc of lightning....0 percent. 
Max temperature.....70-80 F. 
Min humidity........12-17%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph in the afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....Northwest 20 to 25 mph becoming west 15 to 20 
                    mph in the afternoon. 
Mixing Height.......2000 ft AGL until 0900, then 11500 ft AGL. 
Transport Winds.....West 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Mostly clear. Lows 46-56. Highs 77-87. Southwest winds
10 to 20 mph with gusts to  30 mph. 
.TUESDAY...Mostly clear. Lows 48-58. Highs 76-86. West winds
10 to 20 mph with gusts to  35 mph. 
.WEDNESDAY...Mostly clear. Lows 48-58. Highs 78-88. West winds
10 to 20 mph with gusts to  30 mph. 
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 50-60. Highs 78-88. 
.FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows
50-60. Highs 77-87.