National Weather Service United States Department of Commerce

 

COZ207-030115-
COZ207-030115-
Southwest Colorado Lower 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...


...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THIS
EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...

.TODAY...
Sky/weather.........Mostly sunny (10-20%). Areas of smoke until 
                    1200. 
Chc of lightning....0 percent. 
Max temperature.....82-92 F. 
Min humidity........8-13%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    southwest 10 to 15 mph with gusts to 30 mph in 
                    the afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....Southwest 20 to 25 mph. 
Mixing Height.......1500 ft AGL until 0900. 16000 ft AGL after 
                    1000. 
Transport Winds.....South 5 to 10 mph until 1200, then southwest 20 
                    to 25 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.TONIGHT...
Sky/weather.........Mostly clear (10-20%). Areas of smoke. 
Chc of lightning....0 percent. 
Min temperature.....53-63 F. 
Max humidity........22-32%. 
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....West 20 to 25 mph. 
Mixing Height.......14500 ft AGL until 2000, then 1500 ft AGL. 
Transport Winds.....West 10 to 15 mph until 2400, then northwest 5 
                    mph. 
Smoke dispersal.....Excellent until 2100, then poor. 

.SUNDAY...
Sky/weather.........Sunny (0-10%). 
Chc of lightning....0 percent. 
Max temperature.....85-95 F. 
Min humidity........3-8%. 
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....Northwest 10 to 15 mph. 
Mixing Height.......2000 ft AGL until 1000. 13000 ft AGL after 
                    1200. 
Transport Winds.....West 5 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Clear. Lows 51-61. Highs 89-99. Winds less than 15 mph.
.TUESDAY...Mostly clear. Lows 53-63. Highs 89-99. Winds less than
15 mph. 
.WEDNESDAY...Partly cloudy. Lows 56-66. Highs 91-101. Winds less
than 15 mph. 
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 57-67. Highs 91-101. 
.FRIDAY...Mostly clear. Lows 58-68. Highs 90-100.