Eastern Uinta Basin (UTZ486) - Fire Weather Forecast

UTZ486-161245-
UTZ486-161245-
Eastern Uinta Basin-
236 PM MDT Tue Jul 15 2025

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
236 PM MDT Tue Jul 15 2025

.DISCUSSION... Moisture is gradually moving back into our area. 
Today this moisture is resulting in isolated dry thunderstorms. 
As a result, the main concerns are strong wind gusts around storms
and lightning. As atmospheric moisture increases over the coming 
days, shower and thunderstorm coverage should increase, and 
precipitation will have a greater chance of making it to the 
ground. Although moisture and minimum relative humidity are  
expected to increase, this change will be gradual and localized 
Red Flag conditions are possible where it is dry due to gusts 
above critical fire weather thresholds in local areas. 

...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.........Near 5000 feet, mostly cloudy (60-70%) until 
                    2400, then partly cloudy (50-60%). Near 8000 
                    feet, mostly cloudy (60-70%). Isolated 
                    thunderstorms until 2400. Isolated showers. 
Chc of lightning....20 percent. 
Min temperature.....56-66 F. 
   24 hr trend......4 degrees cooler. 
Max humidity........40-50% near 5000 feet 
                    46-56% near 8000 feet. 
   24 hr trend......17% wetter. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 20 mph in the evening. 
CWR.................10 percent. 
Mixing Height.......7500 ft AGL until 2000, then 2000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph. 
Clearing Index......1050 until 1900. Less than 500 after 2000. 

.WEDNESDAY...
Sky/weather.........Near 5000 feet, mostly sunny (10-20%) until 
                    1200, then partly cloudy (50-60%), scattered 
                    dry thunderstorms and showers after 1200. Near 
                    8000 feet, mostly sunny (20-30%) until 1200, 
                    then mostly cloudy (60-70%), scattered showers 
                    and thunderstorms after 1200. Areas of smoke. 
Chc of lightning....30 percent. 
Max temperature.....82-92 F near 5000 feet 
                    70-80 F near 8000 feet. 
   24 hr trend......3 degrees cooler. 
Min humidity........14-24% near 5000 feet 
                    20-30% near 8000 feet. 
   24 hr trend......5% wetter. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph in the afternoon. 
CWR.................30 percent. 
Mixing Height.......2500 ft AGL until 1000. 10500 ft AGL after 
                    1200. 
Transport Winds.....West 5 to 10 mph until 1200, then 15 to 20 mph. 
Clearing Index......Less than 500 until 1000. 1050 after 1100. 

.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Near 5000 feet, 
                    isolated showers until 2400. Areas of smoke 
                    after 2400. 
Chc of lightning....0 percent. 
Min temperature.....54-64 F. 
   24 hr trend......1 degree cooler. 
Max humidity........36-46%. 
   24 hr trend......3% wetter. 
20-foot winds.......Downslope/downvalley winds 3 to 6 mph. 
                    Localized gusts up to 20 mph in the evening. 
CWR.................0 percent. 
Mixing Height.......9500 ft AGL until 1900. 2000 ft AGL after 2000. 
Transport Winds.....North 5 mph. 
Clearing Index......1050 until 1900. Less than 500 after 2000. 

.THURSDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly 
                    cloudy (30-40%). Near 5000 feet, isolated 
                    showers and thunderstorms after 1200. Near 8000 
                    feet, isolated showers and dry thunderstorms 
                    after 1200. 
Chc of lightning....10 percent. 
Max temperature.....83-93 F near 5000 feet 
                    72-82 F near 8000 feet. 
   24 hr trend......Unchanged. 
Min humidity........12-22% near 5000 feet 
                    18-28% near 8000 feet. 
   24 hr trend......1% drier. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph in the afternoon. 
CWR.................10 percent. 
Mixing Height.......3000 ft AGL until 1000. 11500 ft AGL after 
                    1200. 
Transport Winds.....Southwest 5 mph until 1200, then west 10 to 15 
                    mph. 
Clearing Index......Less than 500 until 1000. 1050 after 1100. 

.FORECAST FOR DAY 3 THROUGH 7...
.FRIDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 61-71. Highs 82-92. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 58-68. Highs 81-91. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms .
Lows 57-67. Highs 83-93. Winds less than 15 mph. 
.MONDAY...Mostly clear. Isolated showers and thunderstorms near
8000 feet. Lows 58-68. Highs 84-94. 
.TUESDAY...Mostly clear. Lows 58-68. Highs 86-96.