
A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >
COZ205-112315-
COZ205-112315-
Colorado River Headwaters-
103 AM MDT Sat Apr 11 2026
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
103 AM MDT Sat Apr 11 2026
.DISCUSSION...Gusty southerly winds can be expected over the next
several days due to a stalled upstream trough over the West Coast.
Moisture being pulled through the flow today will boost humidity
and limit fire weather concerns. However an uptick in shower and
thunderstorm activity is expected along with lightning. Localized
critical fire weather conditions return Sunday as the moisture
moves eastward. Cool and unsettled conditions move in 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...
.TODAY...
Sky/weather.........Partly cloudy (50-60%) until 1200, then mostly
cloudy (60-70%). Isolated showers until 1200,
then scattered showers and isolated
thunderstorms.
Chc of lightning....20 percent.
Max temperature.....55-65 F.
Min humidity........26-36%.
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming
southwest 15 to 20 mph with gusts to 45 mph in
the afternoon.
CWR.................50 percent.
15K Ft MSL Winds....Southwest 30 to 40 mph.
Mixing Height.......2000 ft AGL until 0900, then 6500 ft AGL.
Transport Winds.....South 10 to 15 mph until 1200, then southwest
20 to 25 mph.
Smoke dispersal.....Poor until 0900, then very good until 1200,
then excellent until 1500, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers until
2400.
Chc of lightning....0 percent.
Min temperature.....30-40 F.
Max humidity........59-74%.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to 40
mph in the evening becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Southwest 30 to 40 mph.
Mixing Height.......2500 ft AGL.
Transport Winds.....Southwest 5 to 10 mph.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (30-40%).
Chc of lightning....0 percent.
Max temperature.....53-63 F.
Min humidity........15-25%.
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming
southwest 15 to 20 mph with gusts to 50 mph in
the afternoon.
CWR.................0 percent.
15K Ft MSL Winds....Southwest 30 to 40 mph.
Mixing Height.......3500 ft AGL until 0900, then 11500 ft AGL.
Transport Winds.....Southwest 15 to 20 mph until 1200, then 25 to
35 mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Breezy. Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 31-41. Highs 48-58. Southwest winds 15 to
25 mph with gusts to 50 mph.
.TUESDAY...Mostly cloudy. Scattered showers and isolated
thunderstorms. Lows 26-36. Highs 40-50. West winds 10 to 20 mph
with gusts to 40 mph.
.WEDNESDAY...Partly cloudy. Scattered showers. Lows 22-32. Highs
47-57. Southwest winds 10 to 20 mph with gusts to 35 mph.
.THURSDAY...Mostly clear. Isolated showers. Lows 24-34. Highs
50-60.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
22-32. Highs 43-53.