UTZ486-211245-
Eastern Uinta Basin-
245 PM MDT Fri Oct 20 2017

.DISCUSSION...Breezy to windy conditions will continue through
this evening under a pre-frontal southwest flow with gusts in the
30s and 40s in many valley locations. Winds will shift to the 
northwest this evening as the cold front and upper level trough 
move through, bringing colder air and showers to mainly the 
northern and central areas, with 2 to 4 inches of snow over the
higher terrain. Dry northwest flow persists Saturday through early
next week with a slow warming trend. 

...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 cloudy (60-70%) until 2400, then partly 
                    cloudy (30-40%). Near 6000 feet, scattered 
                    showers. Near 8000 feet, scattered showers 
                    until 2400, widespread frost. Areas of blowing 
                    snow after 2400.
Min temperature.....23-33 F. 
   24 hr trend......13 degrees cooler. 
Max humidity........59-74% near 6000 feet 
                    67-82% near 8000 feet. 
   24 hr trend......10% wetter. 
20-foot winds.......Northwest winds 20 to 25 mph, becoming south 10 
                    to 15 mph after midnight. Localized gusts up to 
                    55 mph. 
CWR.................20 percent. 
LAL.................1.
Haines Index........3 very low. 
Mixing Height.......3000 ft AGL. 
Transport Winds.....Northwest 10 to 15 mph. 
Clearing Index......1050 until 0100. Less than 500 after 0300. 

.SATURDAY...
Sky/weather.........Near 6000 feet, mostly sunny (20-30%), 
                    widespread frost until 1200. Near 8000 feet, 
                    mostly sunny (20-30%) until 1200, then partly 
                    cloudy (30-40%), patchy blowing snow until 
                    1200. 
Max temperature.....41-51 F near 6000 feet 
                    31-41 F near 8000 feet. 
   24 hr trend......18 degrees cooler. 
Min humidity........23-33% near 6000 feet 
                    30-40% near 8000 feet. 
   24 hr trend......3% wetter. 
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........2 very low. 
Mixing Height.......7000 ft AGL. 
Transport Winds.....West 5 to 10 mph. 
Clearing Index......500 until 0900. 1000 after 1000. 

.SATURDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%). 
Min temperature.....23-33 F. 
   24 hr trend......2 degrees warmer. 
Max humidity........55-65%. 
   24 hr trend......9% drier. 
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........2 very low. 
Mixing Height.......5000 ft AGL until 2000, then 2000 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Clearing Index......800 until 1900. Less than 500 after 2100. 

.SUNDAY...
Sky/weather.........Partly cloudy (30-40%). 
Max temperature.....52-62 F near 6000 feet 
                    43-53 F near 8000 feet. 
   24 hr trend......10 degrees warmer. 
Min humidity........28-38% near 6000 feet 
                    34-44% near 8000 feet. 
   24 hr trend......6% wetter. 
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........2 very low. 
Mixing Height.......5500 ft AGL. 
Transport Winds.....Southwest 5 mph. 
Clearing Index......Less than 500 until 1200, then 850. 

.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Mostly clear. Lows 34-44. Highs 56-66. Winds less than
15 mph. 
.TUESDAY...Mostly clear. Lows 34-44. Highs 56-66. Winds less than
15 mph. 
.WEDNESDAY...Clear. Lows 32-42. Highs 58-68. Winds less than
15 mph. 
.THURSDAY...Mostly clear. Isolated showers near 6000 feet and
scattered showers near 8000 feet. Lows 32-42. Highs 53-63. 
.FRIDAY...Mostly clear. Lows 27-37. Highs 52-62. 

$$