
Extremely critical fire weather conditions are expected to develop across the Great Basin and Southwest today, and exceptionally dry and windy conditions will promote rapid wildfire spread through the weekend. Scattered severe thunderstorms and heavy rain are possible across parts of the Ozark Plateau into lower Ohio Valley and parts of the northern Rockies into adjacent Great Plains. Read More >
COZ205-280015-
COZ205-280015-
Colorado River Headwaters-
210 AM MDT Sat Jun 27 2026
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
210 AM MDT Sat Jun 27 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR UTAH FIRE WEATHER
ZONES 486, 487, 490 AND 491...
...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING UNTIL
MIDNIGHT MDT TONIGHT FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS
FOR COLORADO FIRE WEATHER ZONES 200, 201, 202, 203 BELOW 8000
FEET, 205 BELOW 8000 FEET, 207, 290, 291, 292, 293, 294 AND 295
BELOW 9000 FEET...
...RED FLAG WARNING IN EFFECT FROM NOON UNTIL 10 PM MDT SUNDAY
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE
WEATHER ZONES 202, 203 BELOW 8000 FEET, 207, 290, 292 AND 294, AS
WELL AS UTAH FIRE WEATHER ZONES 487, 490 AND 491...
.DISCUSSION...RH plummets today as much drier air moves in and
gusts ramp up to over 45 mph. Though some higher elevations have
seen wetting rain over the past 48 hours, lower elevations around
the Four Corners, Grand Valley, and Utah Grand Flat saw little to
no rainfall. Due to the worsening atmospheric conditions and
potential for new starts from lightning, today is poised to be an
extreme fire weather day. Fuels will be more prone to combustion
and fires will be capable of rapid spread. Widespread critical
fire weather conditions continue Sunday with strong winds expected.
...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 10 AM THIS MORNING TO MIDNIGHT
MDT TONIGHT FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS BELOW 8000
FEET...
.TODAY...
Sky/weather.........Mostly sunny (20-30%).
Chc of lightning....0 percent.
Max temperature.....71-81 F.
Min humidity........11-16%.
20-foot winds.......Southwest winds 20 to 25 mph with gusts to 50
mph.
CWR.................0 percent.
15K Ft MSL Winds....Southwest 45 to 55 mph.
Mixing Height.......1000 ft AGL until 0800, then 12500 ft AGL.
Transport Winds.....Southwest 20 to 25 mph until 1200, then 35 to
45 mph.
Smoke dispersal.....Poor until 0900, then excellent.
.TONIGHT...
Sky/weather.........Clear (0-10%).
Chc of lightning....0 percent.
Min temperature.....50-60 F.
Max humidity........31-41%.
20-foot winds.......Southwest winds 20 to 25 mph decreasing to 10
to 15 mph after midnight. Localized gusts up to
50 mph.
CWR.................0 percent.
15K Ft MSL Winds....Southwest 45 to 55 mph.
Mixing Height.......12000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Southwest 20 to 30 mph until 2400, then 15 to
20 mph.
Smoke dispersal.....Excellent until 2100, then poor.
.SUNDAY...
Sky/weather.........Sunny (0-10%).
Chc of lightning....0 percent.
Max temperature.....72-82 F.
Min humidity........11-16%.
20-foot winds.......Southwest winds 20 to 25 mph with gusts to 50
mph.
CWR.................0 percent.
15K Ft MSL Winds....Southwest 45 to 55 mph decreasing to 40 to 50
mph in the afternoon.
Mixing Height.......1500 ft AGL until 0800, then 12500 ft AGL.
Transport Winds.....Southwest 20 to 25 mph until 1200, then 25 to
35 mph.
Smoke dispersal.....Poor until 0900, then excellent.
.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Clear. Lows 39-49. Highs 67-77. Southwest winds 10 to
20 mph with gusts to 45 mph.
.TUESDAY...Clear. Lows 39-49. Highs 69-79. Southwest winds 10 to
20 mph with gusts to 40 mph.
.WEDNESDAY...Clear. Lows 39-49. Highs 72-82. Southwest winds
10 to 20 mph with gusts to 35 mph.
.THURSDAY...Clear. Lows 41-51. Highs 76-86.
.FRIDAY...Mostly clear. Lows 43-53. Highs 78-88.