COZ205-050030-
COZ205-050030-
Colorado River Headwaters-
228 AM MDT Fri Jul 4 2025

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
228 AM MDT Fri Jul 4 2025

.DISCUSSION...Conditions start to warm and dry today, although 
afternoon showers and storms remain possible along and north of 
I-70. Lightning and gusty outflow winds will be the main threats. 
High pressure building in starting tomorrow will bring a gradual 
warming trend, with temperatures running 5-10 degrees above normal 
next week. Dry and sunny weather will dominate, but light winds will
limit critical fire weather conditions.

...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%). Scattered showers until 
                    1200. Isolated thunderstorms. Isolated showers 
                    after 1200. 
Chc of lightning....20 percent. 
Max temperature.....68-78 F. 
Min humidity........25-35%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................30 percent. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......8000 ft AGL. 
Transport Winds.....West 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Good after 1200. 

.TONIGHT...
Sky/weather.........Mostly clear (20-30%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....47-57 F. 
Max humidity........56-66%. 
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.......7000 ft AGL until 2000, then 2500 ft AGL. 
Transport Winds.....West 5 to 10 mph until 2400, then south. 
Smoke dispersal.....Fair until 2100, then poor. 

.SATURDAY...
Sky/weather.........Mostly sunny (10-20%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....75-85 F. 
Min humidity........12-22%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph in the afternoon. 
CWR.................10 percent. 
15K Ft MSL Winds....Southwest 15 to 20 mph. 
Mixing Height.......10000 ft AGL. 
Transport Winds.....Southwest 5 mph until 1200, then west 10 to 15 
                    mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows
45-55. Highs 76-86. Winds less than 15 mph. 
.MONDAY...Mostly clear. Isolated showers and thunderstorms. Lows
46-56. Highs 77-87. Winds less than 15 mph. 
.TUESDAY...Mostly clear. Isolated showers. Lows 48-58. Highs
79-89. Winds less than 15 mph. 
.WEDNESDAY...Clear. Lows 49-59. Highs 81-91. 
.THURSDAY...Mostly clear. Lows 50-60. Highs 81-91.