COZ294-211900-
COZ294-211900-
Southwest Colorado Upper West Forecast Area-
853 PM MDT Wed May 20 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
853 PM MDT Wed May 20 2026

...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THURSDAY
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE
WEATHER ZONE 290, AS WELL AS UTAH FIRE WEATHER ZONE 490... 

.DISCUSSION...A disturbance will bring greater chances of wetting rain 
and thunderstorms to northwest CO and northeast UT tomorrow spreading
into central areas later in the day. Critical fire weather 
conditions will occur in UT zone 490 and CO zone 290. Red Flag 
Warnings have been issued in those zones, with localized critical 
fire weather conditions elsewhere. Dry and warmer weather returns 
this weekend.

...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...


.REST OF TONIGHT...
Sky/weather.........Clear (0-10%). 
Chc of lightning....0 percent. 
Min temperature.....29-39 F. 
Max humidity........43-53%. 
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.......500 ft AGL. 
Transport Winds.....North 5 to 10 mph until 2400, then east. 
Smoke dispersal.....Poor. 

.THURSDAY...
Sky/weather.........Mostly sunny (20-30%). 
Chc of lightning....0 percent. 
Max temperature.....55-65 F. 
Min humidity........12-17%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    southwest 10 to 15 mph with gusts to 35 mph in 
                    the afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......1500 ft AGL until 0900, then 12000 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.THURSDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%) until 2400, then clear 
                    (0-10%). 
Chc of lightning....0 percent. 
Min temperature.....31-41 F. 
Max humidity........47-57%. 
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.......11000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 10 to 15 mph until 2400, then north. 
Smoke dispersal.....Very good until 2100, then poor. 

.FRIDAY...
Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly 
                    cloudy (70-80%). 
Chc of lightning....0 percent. 
Max temperature.....55-65 F. 
Min humidity........15-25%. 
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....West 20 to 25 mph. 
Mixing Height.......500 ft AGL until 0800. 9500 ft AGL after 0900. 
Transport Winds.....Northwest 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Very good after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SATURDAY...Partly cloudy. Lows 33-43. Highs 62-72. Winds less
than 15 mph. 
.SUNDAY...Clear. Lows 35-45. Highs 67-77. Winds less than 15 mph.
.MEMORIAL DAY...Mostly clear. Isolated showers and thunderstorms.
Lows 38-48. Highs 68-78. Winds less than 15 mph. 
.TUESDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 40-50. Highs 59-69. 
.WEDNESDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 37-47. Highs 61-71.