National Weather Service United States Department of Commerce

 

UTZ487-220130-
Book Cliffs-
321 AM MDT Sat Jul 21 2018

.DISCUSSION...High pressure over Texas will slide west over the weekend
forcing monsoonal moisture into central and western UT then curving east
across northern CO and UT. The High center will move to just south of
the Four Corners by Monday cutting off direct northerly flow of moisture
into the area. Instead moisture will recycle around the High through the
week. The general flow aloft will be from the northwest.

...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 (30-40%). Isolated showers and 
                    thunderstorms after 1200. 
Max temperature.....82-92 F near 6000 feet 
                    74-84 F near 8000 feet. 
   24 hr trend......Unchanged. 
Min humidity........15-25%. 
   24 hr trend......2% wetter. 
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. 
Mixing Height.......3500 ft AGL until 0900, then 14000 ft AGL. 
Transport Winds.....Southwest 5 to 10 mph. 
Clearing Index......Less than 500 until 1000. 1050 after 1100. 

.TONIGHT...
Sky/weather.........Mostly cloudy (60-70%). Isolated showers and 
                    thunderstorms. 
Min temperature.....61-71 F near 6000 feet 
                    56-66 F near 8000 feet. 
   24 hr trend......2 degrees warmer. 
Max humidity........45-55%. 
   24 hr trend......3% wetter. 
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming 
                    downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent. 
LAL.................2.
Haines Index........5 moderate. 
Mixing Height.......11500 ft AGL until 2000. 2500 ft AGL after 
                    2200. 
Transport Winds.....Southwest 5 mph. 
Clearing Index......1000 until 1900. Less than 500 after 2100. 

.SUNDAY...
Sky/weather.........Mostly cloudy (60-70%) until 1200, then partly 
                    cloudy (50-60%). Isolated showers and 
                    thunderstorms until 1200. Scattered showers and 
                    thunderstorms after 1200. 
Max temperature.....82-92 F near 6000 feet 
                    75-85 F near 8000 feet. 
   24 hr trend......1 degree cooler. 
Min humidity........18-28% near 6000 feet 
                    24-34% near 8000 feet. 
   24 hr trend......4% wetter. 
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming 
                    upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent. 
LAL.................2 until 1200, then 4.
Haines Index........4 low. 
Mixing Height.......12500 ft AGL. 
Transport Winds.....West 5 mph. 
Clearing Index......Less than 500 until 1200, then 1050. 

.FORECAST FOR DAY 3 THROUGH 7...
.MONDAY...Partly cloudy. Scattered showers and thunderstorms .
Lows 59-69. Highs 85-95. Winds less than 15 mph. 
.TUESDAY...Partly cloudy. Isolated showers and thunderstorms near
6000 feet and scattered showers and isolated thunderstorms near
8000 feet. Lows 60-70. Highs 86-96. Winds less than 15 mph. 
.WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms
near 6000 feet and scattered showers and thunderstorms near
8000 feet. Lows 61-71. Highs 88-98. Winds less than 15 mph. 
.THURSDAY...Partly cloudy. Isolated showers and thunderstorms .
Lows 60-70. Highs 87-97. 
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms near
6000 feet and scattered showers and thunderstorms near 8000 feet
. Lows 60-70. Highs 87-97. 

$$