National Weather Service United States Department of Commerce

Severe Thunderstorms, Excessive Rain and Heat Hazards

A Moderate Risk of severe thunderstorms (level 4 of 5) is in the outlook across portions of the Midwest today. Damaging winds, a few tornadoes and frequent lightning with heavy rainfall are in the forecast. Meanwhile, dangerous heat across the southern Plains into the Great Lakes, mid-Atlantic and Northeast will expand into Friday. Risk for wildfires for the central Rockies and Sacramento Valley. Read More >

COZ203-121115-
COZ203-121115-
Lower Colorado River-
112 PM MDT Thu Jun 11 2026

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
112 PM MDT Thu Jun 11 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE
WEATHER ZONES 207, 293 AND 295... 

...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 9 PM MDT FRIDAY FOR
GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE WEATHER
ZONES 200, 201 ABOVE 9000 FEET, 202, 203 BELOW 8000 FEET, 205
BELOW 8000 FEET, 207, 290, 291, 292, 293, 294 AND 295, AS WELL AS
UTAH FIRE WEATHER ZONES 486 AND 487... 

.DISCUSSION...
Localized critical fire weather conditions continue for SW 
Colorado and the Gunnison Basin where Red Flag Warnings remain in 
effect today. Widespread critical fire weather conditions move in 
tomorrow as gusty winds of 25 to 35 mph, dry conditions, and above
normal temperatures are expected. Red Flag Warnings are in effect
to account for this. Returning moisture for the weekend may allow
some showers/storms to fire, especially Sunday, and with dry 
lower levels, dry lightning may occur. High pressure moves in for 
much of next week causing gusty afternoon winds, and dry 
conditions. Critical fire weather conditions look to continue for 
much of 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...


...RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT FRIDAY FOR
GUSTY WINDS, LOW HUMIDITY AND DRY FUELS BELOW 8000 FEET...

.TONIGHT...
Sky/weather.........Clear (0-10%). 
Chc of lightning....0 percent. 
Min temperature.....47-57 F near 6000 feet 
                    41-51 F near 8000 feet. 
Max humidity........18-28%. 
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 25 to 35 mph 
                    after midnight. 
Mixing Height.......7500 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....Northwest 5 mph until 2400, then east. 
Smoke dispersal.....Poor. 

.FRIDAY...
Sky/weather.........Sunny (0-10%). 
Chc of lightning....0 percent. 
Max temperature.....84-94 F near 6000 feet 
                    74-84 F near 8000 feet. 
Min humidity........4-9%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph with gusts to 35 mph in the 
                    afternoon. 
CWR.................0 percent. 
15K Ft MSL Winds....West 25 to 35 mph decreasing to 20 to 30 mph in 
                    the afternoon. 
Mixing Height.......2000 ft AGL until 1000. 14500 ft AGL after 
                    1200. 
Transport Winds.....Southwest 5 mph until 1200, then west 20 to 25 
                    mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FRIDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). 
Chc of lightning....0 percent. 
Min temperature.....53-63 F. 
Max humidity........18-28%. 
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 25 to 35 mph 
                    after midnight. 
Mixing Height.......14000 ft AGL until 2000, then 1000 ft AGL. 
Transport Winds.....West 10 to 15 mph until 2400, then north 5 mph. 
Smoke dispersal.....Very good until 2100, then poor. 

.SATURDAY...
Sky/weather.........Mostly sunny (20-30%). 
Chc of lightning....0 percent. 
Max temperature.....85-95 F near 6000 feet 
                    74-84 F near 8000 feet. 
Min humidity........5-10%. 
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 25 to 35 mph decreasing to 20 to 25 mph in 
                    the afternoon. 
Mixing Height.......1000 ft AGL until 0900. 16500 ft AGL after 
                    1100. 
Transport Winds.....South 5 mph until 1200, then west 15 to 20 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
53-63. Highs 82-92. Winds less than 15 mph. 
.MONDAY...Mostly clear. Isolated showers. Lows 52-62. Highs
82-92. Winds less than 15 mph. 
.TUESDAY...Clear. Lows 53-63. Highs 85-95. Winds less than
15 mph. 
.WEDNESDAY...Clear. Lows 56-66. Highs 90-100. 
.THURSDAY...Mostly clear. Lows 58-68. Highs 89-99.