National Weather Service United States Department of Commerce

 

COZ202-191845-
White River Forecast Area-
840 PM MDT Mon Jun 18 2018

.DISCUSSION...
Dry and warm weather will dominate the weather for the remainder 
of the week as high pressure builds back in. Even so, a few 
showers are possible along the Wyoming and Colorado border but 
they will be few and far between. Winds are expected to be 
generally light though a few, stronger afternoon breezes are 
possible. Humidities will, once again, drop down and reach the 
teens and single digits. The next chance for any significant
precipitation looks to be on Sunday but models are not in good 
agreement with this solution.

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

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR
GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...

.Rest of Tonight...
Sky/weather.........Mostly clear (20-30%). 
Min temperature.....45-55 F. 
Max humidity........46-56%. 
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 high. 
15K Ft MSL Winds....Southwest 20 to 30 mph. 
Mixing Height.......8500 ft AGL until 2100, then 2000 ft AGL. 
Transport Winds.....West 5 to 10 mph until 2400, then northeast. 
Smoke dispersal.....Good until 2100, then poor. 

.TUESDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly 
                    cloudy (30-40%). Near 8000 feet, isolated 
                    showers and thunderstorms after 1200. 
Max temperature.....71-81 F near 6000 feet 
                    63-73 F near 8000 feet. 
Min humidity........11-21% near 6000 feet 
                    19-29% near 8000 feet. 
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized 
                    gusts up to 20 mph in the afternoon. 
CWR.................0 percent. 
LAL.................1 until 1200, then 2.
Haines Index........5 moderate. 
15K Ft MSL Winds....Southwest 20 to 25 mph. 
Mixing Height.......2000 ft AGL until 0800. 13000 ft AGL after 
                    1100. 
Transport Winds.....North 5 mph until 1200, then west 10 to 15 mph. 
Smoke dispersal.....Poor until 0900. Excellent after 1200. 

.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%). 
Min temperature.....44-54 F. 
Max humidity........57-67%. 
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 moderate. 
15K Ft MSL Winds....West 20 to 25 mph. 
Mixing Height.......11000 ft AGL until 2000. 1500 ft AGL after 
                    2300. 
Transport Winds.....North 5 to 10 mph. 
Smoke dispersal.....Very good until 2100. Poor after 2400. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (20-30%). 
Max temperature.....71-81 F near 6000 feet 
                    62-72 F near 8000 feet. 
Min humidity........13-23% near 6000 feet 
                    22-32% near 8000 feet. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................0 percent. 
LAL.................1.
Haines Index........3 very low. 
15K Ft MSL Winds....Northwest 15 to 20 mph. 
Mixing Height.......2000 ft AGL until 0800, then 9000 ft AGL. 
Transport Winds.....North 5 mph. 
Smoke dispersal.....Poor until 0900, then fair. 

.FORECAST FOR DAY 3 THROUGH 7...
.THURSDAY...Mostly clear. Lows 46-56. Highs 80-90. Winds less
than 15 mph. 
.FRIDAY...Mostly clear. Lows 51-61. Highs 82-92. Winds less than
15 mph. 
.SATURDAY...Mostly clear. Lows 48-58. Highs 78-88. Southwest
winds 10 to 20 mph with gusts up to 25 mph. 
.SUNDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
48-58. Highs 77-87. 
.MONDAY...Mostly clear. Isolated showers and thunderstorms. Lows
48-58. Highs 81-91. 

$$