Colorado River Headwaters (COZ205) - Fire Weather Forecast

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Tuesday

In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding Tuesday. Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota Tuesday afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. Extreme heat returns to the southwest U.S. Read More >

COZ205-070030- COZ205-070030- Colorado River Headwaters- 226 AM MDT Mon Jul 6 2026 Fire Weather Planning Forecast for Wrn Colorado and Ern Utah National Weather Service Grand Junction CO 226 AM MDT Mon Jul 6 2026 .DISCUSSION...Localized critical fire weather conditions are expected today due to both hot, dry, and windy conditions, as well as the potential for isolated dry lightning. Tomorrow the threat of dry lightning continues as storm coverage increases across the region. Moisture moves out mid week, with increasing temperatures highlighting the forecast beyond that. Watch out for gusty and erratic outfow winds near thunderstorms this week! ...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 (50-60%). Patchy smoke. Isolated showers and thunderstorms after 1200. Chc of lightning....0 percent. Max temperature.....81-91 F. Min humidity........7-12%. 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....Southwest 5 to 10 mph. Mixing Height.......1000 ft AGL until 0900. 14500 ft AGL after 1100. Transport Winds.....Southwest 5 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .TONIGHT... Sky/weather.........Partly cloudy (40-50%). Isolated showers and thunderstorms until 2400. Patchy smoke. Chc of lightning....10 percent. Min temperature.....55-65 F. Max humidity........38-48%. 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 5 to 10 mph increasing to southwest 10 to 15 mph after midnight. Mixing Height.......11500 ft AGL until 2000, then 1000 ft AGL. Transport Winds.....Southwest 5 to 10 mph until 2400, then south. Smoke dispersal.....Good until 2100, then poor. .TUESDAY... Sky/weather.........Partly cloudy (40-50%). Patchy smoke. Isolated showers until 1200, scattered showers and thunderstorms after 1200. Chc of lightning....40 percent. Max temperature.....78-88 F. Min humidity........15-25%. 20-foot winds.......Downslope/downvalley 3 to 6 mph becoming upslope/upvalley 4 to 8 mph by 1100. CWR.................20 percent. 15K Ft MSL Winds....West 15 to 20 mph. Mixing Height.......1500 ft AGL until 0900. 10500 ft AGL after 1100. Transport Winds.....West 5 to 10 mph. Smoke dispersal.....Poor until 0900. Very good after 1200. .FORECAST FOR DAY 3 THROUGH 7... .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 48-58. Highs 78-88. Winds less than 15 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 47-57. Highs 75-85. Winds less than 15 mph. .FRIDAY...Mostly clear. Isolated showers. Lows 46-56. Highs 79-89. Winds less than 15 mph. .SATURDAY...Mostly clear. Lows 48-58. Highs 84-94. .SUNDAY...Mostly clear. Lows 50-60. Highs 86-96.