Colorado River Headwaters (COZ205) - Fire Weather Forecast

Widespread Thunderstorms and Showers in the Southeast and Northwest

Widespread showers and thunderstorms may produce isolate instances of flash flooding across the Ozarks and Southeast through Friday. Scattered severe storms and heavy rain is expected across the Northwest U.S.. Gusty winds and low relative humidity will contribute to elevated fire weather over a portion of the northern Plains with a secondary threat in the Great Basin. Read More >

COZ205-290100- COZ205-290100- Colorado River Headwaters- 300 AM MDT Thu May 28 2026 Fire Weather Planning Forecast for Wrn Colorado and Ern Utah National Weather Service Grand Junction CO 300 AM MDT Thu May 28 2026 ...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE WEATHER ZONES 207, 290 AND 292, AS WELL AS UTAH FIRE WEATHER ZONES 486, 487, 490 AND 491... ...FIRE WEATHER WATCH IN EFFECT FRIDAY AFTERNOON THROUGH FRIDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE WEATHER ZONES 207, 290 AND 292, AS WELL AS UTAH FIRE WEATHER ZONES 486, 487, 490 AND 491... .DISCUSSION... Critical fire weather conditions will occur this afternoon and Friday afternoon across much of eastern Utah and southwest Colorado due to gusty surface winds, low humidities and critical fuels. Conditions improve Saturday onwards as temperatures drop some allowing RH to increase while gusty winds decrease. ...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS OR THUNDERSTORMS... ...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL... .TODAY... Sky/weather.........Partly cloudy (30-40%). Isolated showers and thunderstorms after 1200. Chc of lightning....10 percent. Max temperature.....72-82 F. Min humidity........12-22%. 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....Southwest 10 to 15 mph. Mixing Height.......1500 ft AGL until 0900, then 13500 ft AGL. Transport Winds.....South 5 mph until 1200, then southwest 10 to 15 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TONIGHT... Sky/weather.........Partly cloudy (50-60%). Isolated thunderstorms until 2400. Isolated showers. Chc of lightning....10 percent. Min temperature.....46-56 F. Max humidity........56-66%. 20-foot winds.......Upslope/upvalley 4 to 8 mph becoming downslope/downvalley 3 to 6 mph by sunset. CWR.................10 percent. 15K Ft MSL Winds....Southwest 15 to 20 mph. Mixing Height.......10000 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....South 5 to 10 mph. Smoke dispersal.....Fair until 2100, then poor. .FRIDAY... Sky/weather.........Partly cloudy (40-50%). Isolated showers and thunderstorms after 1200. Chc of lightning....20 percent. Max temperature.....68-78 F. Min humidity........15-25%. 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....South 15 to 20 mph. Mixing Height.......1000 ft AGL until 0800. 11000 ft AGL after 0900. Transport Winds.....South 5 to 10 mph. Smoke dispersal.....Poor until 0900. Excellent after 1200. .FORECAST FOR DAY 3 THROUGH 7... .SATURDAY...Cooler. Partly cloudy. Scattered showers and isolated thunderstorms. Lows 35-45. Highs 57-67. West winds 10 to 20 mph with gusts to 30 mph. .SUNDAY...Mostly clear. Isolated showers and thunderstorms. Lows 33-43. Highs 61-71. West winds 10 to 20 mph with gusts to 30 mph. .MONDAY...Mostly clear. Isolated showers. Lows 35-45. Highs 66-76. Winds less than 15 mph. .TUESDAY...Mostly clear. Isolated showers. Lows 37-47. Highs 68-78. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 39-49. Highs 69-79.