COZ205-051100-
COZ205-051100-
Colorado River Headwaters-
1255 PM MDT Thu Jun 4 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
1255 PM MDT Thu Jun 4 2026

...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 AND 202, AS WELL AS UTAH FIRE WEATHER
ZONES 486 AND 487... 
...FIRE WEATHER WATCH IN EFFECT SATURDAY AFTERNOON THROUGH
SATURDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR
COLORADO FIRE WEATHER ZONES 200, 202, 203, 207, 290 AND 292, AS
WELL AS UTAH FIRE WEATHER ZONES 486, 487, 490 AND 491... 

.DISCUSSION...
Critical fire weather conditions are expected in northeast Utah
and northwest Colorado this afternoon due to gusty winds and low
RH. Red Flag Warnings are in effect today from 1 to 7PM for zones
where fuels are deemed critical in that area. Saturday will be 
the next day for widespread critical fire weather conditions. Fire
Weather Watches are currently in effect for Saturday 12 to 9PM for
much of eastern Utah and western Colorado. Hot, dry, windy
conditions will prevail into next week.  

...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.........Mostly clear (20-30%). 
Chc of lightning....0 percent. 
Min temperature.....47-57 F. 
Max humidity........39-49%. 
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 increasing to 20 to 30 mph 
                    after midnight. 
Mixing Height.......12000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....West 5 mph. 
Smoke dispersal.....Very good until 2100, then poor. 

.FRIDAY...
Sky/weather.........Sunny (0-10%) until 1200, then partly cloudy 
                    (30-40%). 
Chc of lightning....0 percent. 
Max temperature.....76-86 F. 
Min humidity........10-15%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph. 
CWR.................0 percent. 
15K Ft MSL Winds....West 20 to 30 mph decreasing to 15 to 20 mph in 
                    the afternoon. 
Mixing Height.......1000 ft AGL until 0900. 13000 ft AGL after 
                    1100. 
Transport Winds.....West 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FRIDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). 
Chc of lightning....0 percent. 
Min temperature.....48-58 F. 
Max humidity........41-51%. 
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 10 to 15 mph. 
Mixing Height.......10000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 to 10 mph until 2400, then 
                    southeast. 
Smoke dispersal.....Fair until 2100, then poor. 

.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly 
                    cloudy (30-40%). Isolated showers and 
                    thunderstorms after 1200. 
Chc of lightning....10 percent. 
Max temperature.....79-89 F. 
Min humidity........10-15%. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent. 
15K Ft MSL Winds....West 10 to 15 mph. 
Mixing Height.......500 ft AGL until 0800. 13000 ft AGL after 1100. 
Transport Winds.....Southwest 5 to 10 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows 44-54. Highs 72-82. Southwest winds
10 to 20 mph with gusts to  40 mph. 
.MONDAY...Mostly clear. Lows 42-52. Highs 73-83. Southwest winds
10 to 20 mph with gusts to  45 mph. 
.TUESDAY...Breezy. Mostly clear. Lows 43-53. Highs 75-85.
Southwest winds 15 to 25 mph with gusts to  50 mph. 
.WEDNESDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 44-54. Highs 74-84. 
.THURSDAY...Mostly clear. Lows 42-52. Highs 72-82.