Colorado River Headwaters (COZ205) - Fire Weather Forecast

COZ205-291230-
COZ205-291230-
Colorado River Headwaters-
217 PM MDT Sun May 28 2023

Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
217 PM MDT Sun May 28 2023

.DISCUSSION...Showers and storms remain possible north of I-70 
for the next 2-3 days, but with decreasing strength and coverage
each afternoon as drier air works in. Any shower will be capable
of producing gusty winds, frequent lightning, and a brief heavy
downpour and small hail. South of I-70, clear skies and dry 
conditions will lead to low afternoon RHs and potentially gusty
winds greater than 25 mph. While fuels remain non-critical, 
near Red Flag conditions will be possible each afternoon through
midweek. From Wednesday onward, the next system will bring 
increasing chances for showers, storms, and wetting rains.


...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...


.Tonight...
Sky/weather.........Mostly clear (20-30%). 
Min temperature.....38-48 F. 
Max humidity........50-60%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
LAL.................1.
Haines Index........5 or moderate. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......8000 ft AGL until 2000, then 500 ft AGL. 
Transport Winds.....West 5 to 10 mph until 2400, then southeast. 
Smoke dispersal.....Fair until 2100, then poor. 

.MEMORIAL DAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and 
                    thunderstorms after 1200. 
Max temperature.....63-73 F. 
Min humidity........14-24%. 
20-foot winds.......Downslope/downvalley winds 4 to 8 mph becoming 
                    west 10 to 15 mph with gusts to 25 mph in the 
                    afternoon. 
CWR.................0 percent. 
LAL.................1 until 1200, then 2.
Haines Index........6 or high. 
15K Ft MSL Winds....West 15 to 20 mph. 
Mixing Height.......1000 ft AGL until 0900, then 11500 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph until 1200, then west 15 
                    to 20 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.MONDAY NIGHT...
Sky/weather.........Mostly clear (20-30%). 
Min temperature.....39-49 F. 
Max humidity........39-49%. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent. 
LAL.................1.
Haines Index........6 or high. 
15K Ft MSL Winds....Southwest 15 to 20 mph. 
Mixing Height.......10000 ft AGL until 1900. 1000 ft AGL after 
                    2000. 
Transport Winds.....West 5 to 10 mph until 2400, then south. 
Smoke dispersal.....Fair until 2100, then poor. 

.TUESDAY...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and 
                    thunderstorms after 1200. 
Max temperature.....67-77 F. 
Min humidity........13-23%. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 25 mph in the afternoon. 
CWR.................10 percent. 
LAL.................1 until 1200, then 2.
Haines Index........6 or high. 
15K Ft MSL Winds....Southwest 15 to 20 mph. 
Mixing Height.......1500 ft AGL until 0800. 9500 ft AGL after 0900. 
Transport Winds.....South 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 37-47. Highs 64-74. Winds less than 15 mph. 
.THURSDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 36-46. Highs 57-67. Winds less than 15 mph. 
.FRIDAY...Partly cloudy. Scattered showers and isolated
thunderstorms. Lows 34-44. Highs 58-68. Winds less than 15 mph. 
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 36-46. Highs 58-68. 
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 37-47. Highs 61-71.