Southeast Utah (UTZ491) - Fire Weather Forecast

UTZ491-251045-
UTZ491-251045-
Southeast Utah-
1235 PM MDT Mon Aug 24 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1235 PM MDT Mon Aug 24 2026

.DISCUSSION...

Moisture decreases this week, but enough remains in place to keep
mountain showers and thunderstorms in the forecast each 
afternoon. The potential for localized heavy rainfall keeps flash 
flood and debris flow concerns elevated for newer burn scars and 
areas of susceptible terrain. Other concerns with afternoon 
convection include lightning and gusty outflow winds near or above
35 mph. Stronger afternoon wind gusts on Friday and Saturday may 
allow for a return of localized 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...


.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and 
                    thunderstorms until 2400. 
Chc of lightning....10 percent. 
Min temperature.....62-72 F near 5000 feet 
                    54-64 F near 8000 feet. 
   24 hr trend......Unchanged. 
Max humidity........40-50%. 
   24 hr trend......15% drier. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
Mixing Height.......9000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    northeast. 
Clearing Index......800 until 2000, then less than 500. 

.TUESDAY...
Sky/weather.........Near 5000 feet, mostly sunny (10-20%). Near 
                    8000 feet, mostly sunny (10-20%) until 1200, 
                    then partly cloudy (30-40%). Isolated showers 
                    and thunderstorms after 1200. 
Chc of lightning....0 percent. 
Max temperature.....89-99 F near 5000 feet 
                    72-82 F near 8000 feet. 
   24 hr trend......1 degree warmer. 
Min humidity........11-21% near 5000 feet 
                    19-29% near 8000 feet. 
   24 hr trend......1% drier. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................0 percent. 
Mixing Height.......2000 ft AGL until 1100, then 11500 ft AGL. 
Transport Winds.....North 5 mph until 1200, then west. 
Clearing Index......Less than 500 until 1200. 950 after 1500. 

.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20%). 
Chc of lightning....0 percent. 
Min temperature.....63-73 F near 5000 feet 
                    55-65 F near 8000 feet. 
   24 hr trend......1 degree warmer. 
Max humidity........35-45%. 
   24 hr trend......5% drier. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
Mixing Height.......10000 ft AGL until 2000. 500 ft AGL after 2100. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    northeast. 
Clearing Index......950 until 1900. Less than 500 after 2000. 

.WEDNESDAY...
Sky/weather.........Near 5000 feet, mostly sunny (20-30%), isolated 
                    showers after 1200. Near 8000 feet, partly 
                    cloudy (40-50%), isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....0 percent. 
Max temperature.....90-100 F near 5000 feet 
                    74-84 F near 8000 feet. 
   24 hr trend......1 degree warmer. 
Min humidity........12-17% near 5000 feet 
                    18-28% near 8000 feet. 
   24 hr trend......Unchanged. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph. 
CWR.................0 percent. 
Mixing Height.......1500 ft AGL until 1000. 14000 ft AGL after 
                    1200. 
Transport Winds.....East 5 mph until 1200, then southwest. 
Clearing Index......Less than 500 until 1100. 1050 after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms near
8000 feet. Lows 63-73. Highs 92-102. Winds less than 15 mph. 
.FRIDAY...Mostly clear. Isolated showers near 8000 feet. Lows
64-74. Highs 92-102. Winds less than 15 mph. 
.SATURDAY...Partly cloudy. Isolated showers and thunderstorms
near 5000 feet and scattered showers and thunderstorms near
8000 feet. Lows 64-74. Highs 89-99. Winds less than 15 mph. 
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 61-71. Highs 86-96. 
.MONDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 85-95.