
Isolated severe storms are possible across parts of the Florida Peninsula and the Great Lakes to Lower Missouri Valley and south-central Plains late this afternoon and early evening. Elevated to critical fire weather concerns continue over much of the northern Great Plains. Above average temperatures persist across portions of the West today. Read More >
COZ205-130045-
COZ205-130045-
Colorado River Headwaters-
232 AM MDT Tue May 12 2026
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
232 AM MDT Tue May 12 2026
...RED FLAG WARNING IN EFFECT WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR
COLORADO FIRE WEATHER ZONES 200, 202, 290 AND 292...
.DISCUSSION...Localized critical fire weather conditions are
possible each afternoon through the end of the week. Conditions
become more widespread on Wednesday, and possibly Saturday, when
gusts could be as high as 40-45 mph. There is a slight (10 percent)
chance for isolated dry thunderstorms Wednesday afternoon. A Red Flag
Warning is in effect for Colorado Fire Weather Zones 200, 202, 290,
and 292 from 2PM to 9PM Wednesday for winds and low humidity.
...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.........Sunny (0-10%) until 1200, then partly cloudy
(30-40%).
Chc of lightning....0 percent.
Max temperature.....76-86 F.
Min humidity........9-14%.
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 15 to 20 mph.
Mixing Height.......1000 ft AGL until 0900. 13500 ft AGL after
1100.
Transport Winds.....West 5 to 10 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%).
Chc of lightning....0 percent.
Min temperature.....45-55 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.......11500 ft AGL until 1900. 500 ft AGL after 2000.
Transport Winds.....Northwest 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Fair until 2100, then poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy (40-50%).
Chc of lightning....0 percent.
Max temperature.....78-88 F.
Min humidity........9-14%.
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming
southwest 10 to 15 mph with gusts to 30 mph in
the afternoon.
CWR.................0 percent.
15K Ft MSL Winds....West 15 to 20 mph increasing to southwest 20 to
25 mph in the afternoon.
Mixing Height.......1000 ft AGL until 0900. 13500 ft AGL after
1000.
Transport Winds.....South 5 to 10 mph until 1200, then southwest 15
to 20 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms.
Lows 42-52. Highs 68-78. West winds 10 to 20 mph with gusts to
35 mph.
.FRIDAY...Clear. Lows 35-45. Highs 70-80. West winds 10 to 20 mph
with gusts to 35 mph.
.SATURDAY...Mostly clear. Isolated showers and thunderstorms.
Lows 37-47. Highs 71-81. West winds 10 to 20 mph with gusts to
45 mph.
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
38-48. Highs 65-75.
.MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
33-43. Highs 63-73.