Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Grand Junction, CO
Issued by NWS Grand Junction, CO
342
FNUS55 KGJT 211912
FWFGJT
Fire Weather Planning Forecast for Wrn Colorado and Ern Utah
National Weather Service Grand Junction CO
112 PM MDT Thu Aug 21 2025
.DISCUSSION...Increasing moisture will result in increasing
shower chances, but for the next couple of days rainfall may be
limited, while strong outflow winds and lightning starts remain a
possibility. The chances for wetting rain looks to increase this
weekend and early next week. We could be looking at the potential
for moderate and heavy rates and therefore burn scar debris flows
at some point.
...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS
OR THUNDERSTORMS...
...THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL...
COZ200-221115-
Little Snake Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Near 6000 feet, partly cloudy (50-60%). Near
8000 feet, mostly cloudy (60-70%) until 2400,
then mostly clear (20-30%). Isolated showers
and thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....58-68 F.
Max humidity........52-62% near 6000 feet
44-54% near 8000 feet.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 25 mph in the evening.
CWR.................10 percent.
15K Ft MSL Winds....Southwest 5 to 10 mph increasing to west 15 to
20 mph after midnight.
Mixing Height.......9500 ft AGL until 1900. 2000 ft AGL after 2000.
Transport Winds.....North 5 to 10 mph.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (40-50%). Near 6000 feet,
isolated showers and thunderstorms after 1200.
near 8000 feet, isolated showers. Isolated
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....83-93 F near 6000 feet
71-81 F near 8000 feet.
Min humidity........13-23% 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.................10 percent.
15K Ft MSL Winds....West 15 to 20 mph becoming northwest 10 to 15
mph in the afternoon.
Mixing Height.......3000 ft AGL until 1100, then 9500 ft AGL.
Transport Winds.....North 5 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%).
Chc of lightning....0 percent.
Min temperature.....55-65 F.
Max humidity........59-74%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......5500 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....North 5 to 10 mph.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny (20-30%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....83-93 F near 6000 feet
70-80 F near 8000 feet.
Min humidity........10-15%.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph in the afternoon.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 20 to 25 mph.
Mixing Height.......3000 ft AGL until 1100, then 14000 ft AGL.
Transport Winds.....North 5 to 10 mph.
Smoke dispersal.....Poor until 1200. Excellent after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 53-63. Highs 82-92. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 52-62. Highs 76-86. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 73-83. Winds less than 15 mph.
.WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 50-60. Highs 71-81.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 49-59. Highs 71-81.
$$
COZ201-221115-
Routt Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400. Areas of smoke.
Chc of lightning....10 percent.
Min temperature.....52-62 F.
Max humidity........49-59%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....West 5 to 10 mph increasing to 10 to 15 mph
after midnight.
Mixing Height.......11500 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Northeast 5 to 10 mph until 2400, then east.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly
cloudy (60-70%). Areas of smoke until 1200.
Isolated showers until 1200, then scattered
showers and thunderstorms.
Chc of lightning....50 percent.
Max temperature.....73-83 F.
Min humidity........20-30%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......2000 ft AGL until 1000, then 10500 ft AGL.
Transport Winds.....North 5 mph until 1200, then northwest 10 to 15
mph.
Smoke dispersal.....Poor until 0900. Very good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (50-60%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....48-58 F.
Max humidity........57-67%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......7500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (40-50%). Isolated showers and
thunderstorms until 1200, then scattered
showers and thunderstorms.
Chc of lightning....30 percent.
Max temperature.....72-82 F.
Min humidity........14-24%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 15 to 20 mph.
Mixing Height.......3000 ft AGL until 1000. 12500 ft AGL after
1200.
Transport Winds.....South 5 mph until 1200, then northwest 15 to 20
mph.
Smoke dispersal.....Poor until 0900. Excellent after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 48-58. Highs 71-81. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 47-57. Highs 64-74. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 44-54. Highs 62-72. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and scattered thunderstorms. Lows
45-55. Highs 60-70.
.THURSDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 44-54. Highs 59-69.
$$
COZ202-221115-
White River Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Near 6000 feet,
isolated showers until 2400. Near 8000 feet,
areas of smoke until 2400, isolated showers and
thunderstorms until 2400.
Chc of lightning....0 percent.
Min temperature.....56-66 F.
Max humidity........48-58% near 6000 feet
36-46% near 8000 feet.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....West 5 to 10 mph increasing to 15 to 20 mph
after midnight.
Mixing Height.......12000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....Northeast 5 to 10 mph.
Smoke dispersal.....Good until 2100, then poor.
.FRIDAY...
Sky/weather.........Near 6000 feet, partly cloudy (40-50%). Near
8000 feet, partly cloudy (30-40%) until 1200,
then mostly cloudy (60-70%), areas of smoke
after 1200. Scattered showers and thunderstorms
after 1200.
Chc of lightning....30 percent.
Max temperature.....83-93 F near 6000 feet
74-84 F near 8000 feet.
Min humidity........12-22% near 6000 feet
18-28% near 8000 feet.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....West 15 to 20 mph becoming northwest 10 to 15
mph in the afternoon.
Mixing Height.......1500 ft AGL until 1000. 9000 ft AGL after 1100.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1500.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....54-64 F.
Max humidity........51-61% near 6000 feet
40-50% near 8000 feet.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......5000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 to 10 mph until 2400, then east.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (30-40%). Near 6000 feet, isolated
showers and thunderstorms after 1200. Near 8000
feet, scattered showers and thunderstorms after
1200.
Chc of lightning....20 percent.
Max temperature.....83-93 F near 6000 feet
74-84 F near 8000 feet.
Min humidity........10-15% near 6000 feet
14-24% near 8000 feet.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph in the afternoon.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 15 to 20 mph.
Mixing Height.......3000 ft AGL until 1100, then 13000 ft AGL.
Transport Winds.....North 5 mph.
Smoke dispersal.....Poor until 0900. Very good after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms near
6000 feet and numerous showers and scattered thunderstorms near
8000 feet. Lows 55-65. Highs 82-92. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 53-63. Highs 76-86. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 50-60. Highs 73-83. Winds less
than 15 mph.
.WEDNESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 50-60. Highs 71-81.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms
near 6000 feet and numerous showers and scattered thunderstorms
near 8000 feet. Lows 48-58. Highs 71-81.
$$
COZ203-221115-
Lower Colorado River-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Mostly clear (20-30%). Isolated showers and
thunderstorms until 2400. Areas of smoke.
Chc of lightning....10 percent.
Min temperature.....63-73 F.
Max humidity........31-41%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph.
CWR.................0 percent.
15K Ft MSL Winds....West 5 to 10 mph.
Mixing Height.......14000 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....North 5 to 10 mph until 2400, then northeast.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%). Areas of smoke until
1200. Scattered showers and thunderstorms after
1200.
Chc of lightning....30 percent.
Max temperature.....86-96 F near 6000 feet
78-88 F near 8000 feet.
Min humidity........13-23%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......2500 ft AGL until 1000. 11000 ft AGL after
1200.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Areas of smoke until
2400. Isolated showers and thunderstorms until
2400.
Chc of lightning....20 percent.
Min temperature.....61-71 F near 6000 feet
54-64 F near 8000 feet.
Max humidity........39-49%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......7500 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly
cloudy (50-60%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....30 percent.
Max temperature.....86-96 F near 6000 feet
77-87 F near 8000 feet.
Min humidity........12-17%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......2500 ft AGL until 1000. 12000 ft AGL after
1200.
Transport Winds.....East 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 59-69. Highs 82-92. Winds less than 15 mph.
.MONDAY...Numerous showers and scattered thunderstorms. Lows
57-67. Highs 77-87. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 55-65. Highs 73-83. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and scattered thunderstorms. Lows
55-65. Highs 71-81.
.THURSDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 53-63. Highs 72-82.
$$
COZ205-221115-
Colorado River Headwaters-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400. Areas of smoke.
Chc of lightning....10 percent.
Min temperature.....54-64 F.
Max humidity........44-54%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....West 5 to 10 mph.
Mixing Height.......11500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy (40-50%) until 1200, then mostly
cloudy (60-70%). Areas of smoke. Numerous
showers and scattered thunderstorms after 1200.
Chc of lightning....50 percent.
Max temperature.....78-88 F.
Min humidity........17-27%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......2500 ft AGL until 1000, then 9000 ft AGL.
Transport Winds.....Northwest 5 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (30-40%). Areas of smoke until 2400.
Scattered showers and isolated thunderstorms
until 2400.
Chc of lightning....20 percent.
Min temperature.....51-61 F.
Max humidity........55-70%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......6000 ft AGL until 2000, then 2500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then mostly
cloudy (60-70%). Isolated showers and
thunderstorms until 1200, then scattered
showers and thunderstorms.
Chc of lightning....40 percent.
Max temperature.....76-86 F.
Min humidity........15-25%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......3000 ft AGL until 1000. 11500 ft AGL after
1200.
Transport Winds.....Northeast 5 mph until 1200, then northwest 10
to 15 mph.
Smoke dispersal.....Poor until 0900. Very good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Numerous showers and scattered
thunderstorms. Lows 47-57. Highs 73-83. Winds less than 15 mph.
.MONDAY...Numerous showers and thunderstorms. Lows 47-57. Highs
66-76. Winds less than 15 mph.
.TUESDAY...Numerous showers and scattered thunderstorms. Lows
45-55. Highs 63-73. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and scattered thunderstorms. Lows
45-55. Highs 61-71.
.THURSDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 44-54. Highs 62-72.
$$
COZ290-221115-
Paradox Valley Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Mostly clear (20-30%). Near 6000 feet, isolated
showers until 2400. Near 8000 feet, isolated
showers and thunderstorms until 2400, areas of
smoke after 2400.
Chc of lightning....0 percent.
Min temperature.....60-70 F near 6000 feet
55-65 F near 8000 feet.
Max humidity........30-40% near 6000 feet
44-54% near 8000 feet.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......10500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Near 6000 feet, mostly sunny (20-30%) until
1200, then partly cloudy (50-60%), scattered
showers and thunderstorms after 1200. Near 8000
feet, partly cloudy (30-40%) until 1200, then
mostly cloudy (60-70%), areas of smoke until
1200, numerous showers and scattered
thunderstorms after 1200.
Chc of lightning....40 percent.
Max temperature.....88-98 F near 6000 feet
76-86 F near 8000 feet.
Min humidity........12-17% near 6000 feet
16-26% near 8000 feet.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......2000 ft AGL until 1000. 11500 ft AGL after
1200.
Transport Winds.....South 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1500.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and
isolated thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....57-67 F near 6000 feet
53-63 F near 8000 feet.
Max humidity........41-51% near 6000 feet
54-64% near 8000 feet.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......7500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Near 6000 feet, mostly sunny (20-30%) until
1200, then mostly cloudy (60-70%), scattered
showers and thunderstorms after 1200. Near 8000
feet, partly cloudy (30-40%) until 1200, then
mostly cloudy (70-80%), isolated showers until
1200, then numerous showers and scattered
thunderstorms.
Chc of lightning....40 percent.
Max temperature.....86-96 F near 6000 feet
74-84 F near 8000 feet.
Min humidity........11-21% near 6000 feet
18-28% near 8000 feet.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......2500 ft AGL until 1000. 12500 ft AGL after
1200.
Transport Winds.....Southeast 5 mph until 1200, then north.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms near
6000 feet and showers with numerous thunderstorms near 8000 feet.
Lows 59-69. Highs 83-93. Winds less than 15 mph.
.MONDAY...Numerous showers and thunderstorms. Lows 57-67. Highs
78-88. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 56-66. Highs 75-85. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and thunderstorms. Lows 55-65.
Highs 71-81.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 54-64. Highs 73-83.
$$
COZ291-221115-
Northern San Juan Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400. Areas of smoke after
2400.
Chc of lightning....10 percent.
Min temperature.....53-63 F.
Max humidity........43-53%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....North 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northeast 5 mph until 2400, then south.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (70-80%). Areas of smoke until 1200.
Numerous showers and scattered thunderstorms
after 1200.
Chc of lightning....50 percent.
Max temperature.....75-85 F.
Min humidity........16-26%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......3000 ft AGL until 1000, then 10500 ft AGL.
Transport Winds.....Southwest 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (40-50%). Scattered showers and
thunderstorms until 2400.
Chc of lightning....40 percent.
Min temperature.....51-61 F.
Max humidity........55-65%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......6000 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....Northeast 5 to 10 mph until 2400, then south.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (70-80%). Isolated showers and
thunderstorms until 1200, then numerous showers
and scattered thunderstorms.
Chc of lightning....50 percent.
Max temperature.....72-82 F.
Min humidity........18-28%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......5500 ft AGL until 1100, then 9000 ft AGL.
Transport Winds.....Northwest 5 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 49-59. Highs 73-83. Winds less than 15 mph.
.MONDAY...Numerous showers and thunderstorms. Lows 48-58. Highs
67-77. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 46-56. Highs 64-74. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and thunderstorms. Lows 45-55.
Highs 62-72.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 63-73.
$$
COZ292-221115-
North Fork Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Areas of smoke after
2400. Near 8000 feet, isolated showers until
2400.
Chc of lightning....0 percent.
Min temperature.....58-68 F near 6000 feet
55-65 F near 8000 feet.
Max humidity........35-45%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....North 5 to 10 mph.
Mixing Height.......12500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....Northwest 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Near 6000 feet, partly cloudy (30-40%). Near
8000 feet, partly cloudy (30-40%) until 1200,
then mostly cloudy (60-70%). Scattered showers
and thunderstorms after 1200.
Chc of lightning....30 percent.
Max temperature.....88-98 F near 6000 feet
78-88 F near 8000 feet.
Min humidity........12-22%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000. 11500 ft AGL after
1200.
Transport Winds.....Southwest 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200, then good.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (30-40%). Near 6000 feet, scattered
showers and isolated thunderstorms until 2400.
near 8000 feet, scattered showers and
thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....54-64 F near 6000 feet
52-62 F near 8000 feet.
Max humidity........48-58%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......8000 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Near 6000 feet, partly cloudy (50-60%) after
1200, scattered showers and thunderstorms after
1200. Mostly sunny (20-30%) until 1200. Near
8000 feet, mostly cloudy (60-70%) after 1200,
isolated showers until 1200, then numerous
showers and scattered thunderstorms.
Chc of lightning....40 percent.
Max temperature.....86-96 F near 6000 feet
76-86 F near 8000 feet.
Min humidity........12-22%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......3000 ft AGL until 1000, then 11500 ft AGL.
Transport Winds.....East 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 57-67. Highs 83-93. Winds less
than 15 mph.
.MONDAY...Numerous showers and scattered thunderstorms near
6000 feet and numerous showers and thunderstorms near 8000 feet.
Lows 55-65. Highs 78-88. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and showers with numerous
thunderstorms near 8000 feet. Lows 54-64. Highs 74-84. Winds less
than 15 mph.
.WEDNESDAY...Numerous showers and scattered thunderstorms near
6000 feet and numerous showers and scattered thunderstorms near
8000 feet. Lows 54-64. Highs 71-81.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 52-62. Highs 72-82.
$$
COZ293-221115-
Gunnison Basin Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers until
2400. Areas of smoke.
Chc of lightning....0 percent.
Min temperature.....54-64 F.
Max humidity........47-57%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph shifting to the west
after midnight.
Mixing Height.......11500 ft AGL until 1900. 2000 ft AGL after
2000.
Transport Winds.....East 5 to 10 mph.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (60-70%). Areas of smoke after 1200.
Scattered showers and thunderstorms after 1200.
Chc of lightning....50 percent.
Max temperature.....81-91 F.
Min humidity........16-26%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....Northwest 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000. 10500 ft AGL after
1200.
Transport Winds.....Northwest 5 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (30-40%). Scattered showers and
thunderstorms until 2400.
Chc of lightning....40 percent.
Min temperature.....50-60 F.
Max humidity........61-76%.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................20 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......7000 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....East 5 mph.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then mostly
cloudy (60-70%). Isolated showers and
thunderstorms until 1200, then numerous showers
and scattered thunderstorms.
Chc of lightning....50 percent.
Max temperature.....77-87 F.
Min humidity........20-30%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......3000 ft AGL until 1000, then 11000 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 47-57. Highs 73-83. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
47-57. Highs 68-78. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 46-56. Highs 64-74. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and thunderstorms. Lows 45-55.
Highs 62-72.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 63-73.
$$
COZ207-221115-
Southwest Colorado Lower Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....60-70 F.
Max humidity........44-54%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....North 5 to 10 mph.
Mixing Height.......10500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Good until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....89-99 F.
Min humidity........11-21%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....North 5 to 10 mph.
Mixing Height.......2000 ft AGL until 1000. 11500 ft AGL after
1200.
Transport Winds.....Southeast 5 to 10 mph until 1200, then
northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and
thunderstorms until 2400, then isolated
showers.
Chc of lightning....30 percent.
Min temperature.....58-68 F.
Max humidity........50-60%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......8000 ft AGL until 2000. 1500 ft AGL after 2100.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Fair until 2100, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....40 percent.
Max temperature.....87-97 F.
Min humidity........13-23%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......2000 ft AGL until 1000. 12000 ft AGL after
1200.
Transport Winds.....East 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 56-66. Highs 84-94. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 54-64. Highs 80-90. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 53-63. Highs 77-87. Winds less than 15 mph.
.WEDNESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms. Lows 52-62. Highs 72-82.
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 51-61. Highs 74-84.
$$
COZ294-221115-
Southwest Colorado Upper West Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400. Areas of smoke.
Chc of lightning....20 percent.
Min temperature.....58-68 F.
Max humidity........49-59%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......11000 ft AGL until 1900. 1000 ft AGL after
2000.
Transport Winds.....North 5 to 10 mph until 2400, then southeast.
Smoke dispersal.....Fair until 2100, then poor.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (60-70%). Areas of smoke. Scattered
showers and thunderstorms after 1200.
Chc of lightning....50 percent.
Max temperature.....78-88 F.
Min humidity........17-27%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................30 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......1000 ft AGL until 0900. 9000 ft AGL after 1000.
Transport Winds.....South 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (40-50%). Areas of smoke until 2400.
Scattered showers and thunderstorms until 2400,
then isolated showers.
Chc of lightning....40 percent.
Min temperature.....54-64 F.
Max humidity........58-73%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......6000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northeast 5 to 10 mph until 2400, then
southeast.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (70-80%). Isolated showers until 1200,
then numerous showers and scattered
thunderstorms.
Chc of lightning....50 percent.
Max temperature.....76-86 F.
Min humidity........19-29%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................40 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......2500 ft AGL until 1000. 9500 ft AGL after 1200.
Transport Winds.....North 5 mph.
Smoke dispersal.....Poor until 0900. Good after 1200.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
48-58. Highs 74-84. Winds less than 15 mph.
.MONDAY...Numerous showers and thunderstorms. Lows 47-57. Highs
69-79. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and thunderstorms.
Lows 45-55. Highs 66-76. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and thunderstorms. Lows 44-54.
Highs 62-72.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 43-53. Highs 64-74.
$$
COZ295-221115-
Southwest Colorado Upper East Forecast Area-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (30-40%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....52-62 F.
Max humidity........54-64%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
15K Ft MSL Winds....Northeast 5 to 10 mph.
Mixing Height.......7000 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....East 5 mph.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then mostly
cloudy (70-80%). Areas of smoke after 1200.
Numerous showers and thunderstorms after 1200.
Chc of lightning....60 percent.
Max temperature.....80-90 F.
Min humidity........20-30%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................60 percent.
15K Ft MSL Winds....North 5 to 10 mph.
Mixing Height.......2500 ft AGL until 1000, then 7000 ft AGL until
1700, then 3000 ft AGL.
Transport Winds.....North 5 mph.
Smoke dispersal.....Poor until 1200, then good until 1500, then
poor.
.FRIDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70%) until 2400, then partly
cloudy (50-60%). Areas of smoke until 2400.
Scattered showers and thunderstorms until 2400,
then isolated showers.
Chc of lightning....40 percent.
Min temperature.....50-60 F.
Max humidity........59-74%.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................30 percent.
15K Ft MSL Winds....North 10 to 15 mph.
Mixing Height.......2500 ft AGL.
Transport Winds.....Northeast 5 mph.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy (30-40%) until 1200, then mostly
cloudy (70-80%). Isolated showers and
thunderstorms until 1200, then showers with
numerous thunderstorms.
Chc of lightning....70 percent.
Max temperature.....77-87 F.
Min humidity........24-34%.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................80 percent.
15K Ft MSL Winds....Northwest 10 to 15 mph.
Mixing Height.......3000 ft AGL until 1000, then 7000 ft AGL until
1700, then 3500 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Smoke dispersal.....Poor until 1200, then fair until 1500, then
poor.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and thunderstorms. Lows
46-56. Highs 74-84. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Showers and thunderstorms. Lows 46-56.
Highs 69-79. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Showers with numerous thunderstorms.
Lows 45-55. Highs 65-75. Winds less than 15 mph.
.WEDNESDAY...Numerous showers and thunderstorms. Lows 45-55.
Highs 63-73.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows 44-54. Highs 66-76.
$$
UTZ485-221115-
Eastern Ashley National Forest-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Near 7000 feet, partly cloudy (40-50%),
isolated showers and thunderstorms until 2400.
near 10000 feet, mostly cloudy (60-70%) until
2400, then partly cloudy (30-40%), areas of
smoke until 2400, scattered showers and
isolated thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....57-67 F near 7000 feet
44-54 F near 10000 feet.
24 hr trend......Unchanged.
Max humidity........47-57% near 7000 feet
54-64% near 10000 feet.
24 hr trend......28% wetter.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
Mixing Height.......5500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 mph.
Clearing Index......600 until 2000, then less than 500.
.FRIDAY...
Sky/weather.........Near 7000 feet, partly cloudy (40-50%). Near
10000 feet, partly cloudy (50-60%) until 1200,
then mostly cloudy (60-70%), areas of smoke
until 1200. Isolated showers and thunderstorms
until 1200. Scattered showers and thunderstorms
after 1200.
Chc of lightning....30 percent.
Max temperature.....76-86 F near 7000 feet
65-75 F near 10000 feet.
24 hr trend......Unchanged.
Min humidity........21-31% near 7000 feet
29-39% near 10000 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.
Mixing Height.......3000 ft AGL until 1100, then 7500 ft AGL.
Transport Winds.....Northwest 5 mph until 1200, then 10 to 15 mph.
Clearing Index......Less than 500 until 1100. 1050 after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%). Near 10000 feet,
isolated showers and thunderstorms until 2400.
Chc of lightning....0 percent.
Min temperature.....55-65 F near 7000 feet
41-51 F near 10000 feet.
24 hr trend......4 degrees cooler.
Max humidity........53-63%.
24 hr trend......19% drier.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph after midnight.
CWR.................0 percent.
Mixing Height.......5000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph.
Clearing Index......500 until 2000, then less than 500.
.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (30-40%). Near 7000 feet, isolated
showers and thunderstorms after 1200. Near
10000 feet, scattered showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....77-87 F near 7000 feet
65-75 F near 10000 feet.
24 hr trend......1 degree warmer.
Min humidity........15-25% near 7000 feet
22-32% near 10000 feet.
24 hr trend......4% drier.
20-foot winds.......Upslope/upvalley winds 4 to 8 mph. Localized
gusts up to 20 mph in the afternoon.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 12000 ft AGL.
Transport Winds.....North 5 mph until 1200, then northwest 10 to 15
mph.
Clearing Index......Less than 500 until 1100. 1050 after 1300.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms near
7000 feet and numerous showers and scattered thunderstorms near
10000 feet. Lows 54-64. Highs 75-85. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 52-62. Highs 69-79. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 7000 feet and scattered showers and
thunderstorms near 10000 feet. Lows 49-59. Highs 66-76. Winds
less than 15 mph.
.WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms
near 7000 feet and showers and scattered thunderstorms near
10000 feet. Lows 49-59. Highs 64-74.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms
near 7000 feet and numerous showers and scattered thunderstorms
near 10000 feet. Lows 47-57. Highs 63-73.
$$
UTZ486-221115-
Eastern Uinta Basin-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....59-69 F near 5000 feet
53-63 F near 8000 feet.
24 hr trend......1 degree cooler.
Max humidity........36-46% near 5000 feet
43-53% near 8000 feet.
24 hr trend......13% wetter.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................10 percent.
Mixing Height.......8500 ft AGL until 1900. 1500 ft AGL after 2000.
Transport Winds.....North 5 to 10 mph.
Clearing Index......1000 until 1900. Less than 500 after 2000.
.FRIDAY...
Sky/weather.........Partly cloudy (40-50%). Near 8000 feet,
isolated showers until 1200. Scattered showers
and thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....83-93 F near 5000 feet
70-80 F near 8000 feet.
24 hr trend......4 degrees cooler.
Min humidity........18-28%.
24 hr trend......10% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................20 percent.
Mixing Height.......2000 ft AGL until 1000. 7500 ft AGL after 1200.
Transport Winds.....North 5 mph until 1200, then northwest 10 to 15
mph.
Clearing Index......Less than 500 until 1100. 950 after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (30-40%).
Chc of lightning....0 percent.
Min temperature.....57-67 F near 5000 feet
51-61 F near 8000 feet.
24 hr trend......3 degrees cooler.
Max humidity........40-50% near 5000 feet
49-59% near 8000 feet.
24 hr trend......2% drier.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph after midnight.
CWR.................0 percent.
Mixing Height.......4500 ft AGL until 2000, then 2000 ft AGL.
Transport Winds.....North 5 to 10 mph.
Clearing Index......750 until 1900, then less than 500.
.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (30-40%). Isolated showers and
thunderstorms after 1200.
Chc of lightning....10 percent.
Max temperature.....82-92 F near 5000 feet
72-82 F near 8000 feet.
24 hr trend......1 degree cooler.
Min humidity........12-22%.
24 hr trend......11% drier.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 13500 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Clearing Index......Less than 500 until 1100. 1050 after 1300.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows 60-70. Highs 80-90. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 58-68. Highs 74-84. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Scattered showers and thunderstorms
near 6000 feet and numerous showers and scattered thunderstorms
near 8000 feet. Lows 55-65. Highs 71-81. Winds less than 15 mph.
.WEDNESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 55-65. Highs 69-79.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 52-62. Highs 70-80.
$$
UTZ487-221115-
Book Cliffs-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....62-72 F.
24 hr trend......Unchanged.
Max humidity........37-47%.
24 hr trend......15% wetter.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
Mixing Height.......12000 ft AGL until 1900. 1500 ft AGL after
2000.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Clearing Index......1050 until 2000, then less than 500.
.FRIDAY...
Sky/weather.........Near 5000 feet, partly cloudy (40-50%). Near
8000 feet, partly cloudy (30-40%) until 1200,
then mostly cloudy (60-70%). Scattered showers
and thunderstorms after 1200.
Chc of lightning....40 percent.
Max temperature.....84-94 F near 5000 feet
78-88 F near 8000 feet.
24 hr trend......3 degrees cooler.
Min humidity........14-24%.
24 hr trend......8% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................30 percent.
Mixing Height.......1500 ft AGL until 1000. 8500 ft AGL after 1200.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Clearing Index......Less than 500 until 1100. 1050 after 1200.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....60-70 F.
24 hr trend......4 degrees cooler.
Max humidity........39-49%.
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.
Mixing Height.......3500 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 to 10 mph until 2400, then south.
Clearing Index......600 until 1900, then less than 500.
.SATURDAY...
Sky/weather.........Mostly sunny (10-20%) until 1200, then partly
cloudy (40-50%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....30 percent.
Max temperature.....82-92 F near 5000 feet
77-87 F near 8000 feet.
24 hr trend......1 degree cooler.
Min humidity........12-17% near 5000 feet
16-26% near 8000 feet.
24 hr trend......5% drier.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......2000 ft AGL until 1000, then 11500 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then north.
Clearing Index......Less than 500 until 1100. 1050 after 1500.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 60-70. Highs 81-91. Winds
less than 15 mph.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms near
6000 feet and showers and scattered thunderstorms near 8000 feet
. Lows 56-66. Highs 76-86. Winds less than 15 mph.
.TUESDAY...Mostly cloudy. Showers and scattered thunderstorms
near 6000 feet and showers and scattered thunderstorms near
8000 feet. Lows 54-64. Highs 72-82. Winds less than 15 mph.
.WEDNESDAY...Mostly cloudy. Showers and scattered thunderstorms
near 6000 feet and numerous showers and scattered thunderstorms
near 8000 feet. Lows 54-64. Highs 71-81.
.THURSDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 6000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 51-61. Highs 72-82.
$$
UTZ490-221115-
Colorado River Basin-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....66-76 F.
24 hr trend......1 degree warmer.
Max humidity........27-37%.
24 hr trend......5% wetter.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......11000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....North 5 to 10 mph until 2400, then northeast.
Clearing Index......950 until 2000, then less than 500.
.FRIDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly
cloudy (40-50%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....30 percent.
Max temperature.....94-104 F near 5000 feet
83-93 F near 7000 feet.
24 hr trend......3 degrees cooler.
Min humidity........12-17%.
24 hr trend......4% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 11000 ft AGL.
Transport Winds.....Northeast 5 mph until 1200, then northwest.
Clearing Index......Less than 500 until 1200. 1050 after 1400.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....20 percent.
Min temperature.....64-74 F.
24 hr trend......2 degrees cooler.
Max humidity........32-42%.
24 hr trend......7% wetter.
20-foot winds.......Downslope/downvalley winds 3 to 6 mph.
Localized gusts up to 20 mph in the evening.
CWR.................10 percent.
Mixing Height.......5000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northeast 5 to 10 mph.
Clearing Index......1050 until 1900. Less than 500 after 2100.
.SATURDAY...
Sky/weather.........Mostly sunny (20-30%) until 1200, then partly
cloudy (40-50%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....92-102 F near 5000 feet
81-91 F near 7000 feet.
24 hr trend......1 degree cooler.
Min humidity........11-16%.
24 hr trend......1% drier.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 13000 ft AGL.
Transport Winds.....Northeast 5 to 10 mph until 1200, then north.
Clearing Index......500 until 1400, then 1000.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms near
5000 feet and numerous showers and scattered thunderstorms near
7000 feet. Lows 65-75. Highs 86-96. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 5000 feet and showers and scattered
thunderstorms near 7000 feet. Lows 61-71. Highs 82-92. Winds
less than 15 mph.
.TUESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 5000 feet and showers and scattered
thunderstorms near 7000 feet. Lows 60-70. Highs 77-87. Winds
less than 15 mph.
.WEDNESDAY...Numerous showers and scattered thunderstorms. Lows
58-68. Highs 75-85.
.THURSDAY...Mostly cloudy. Scattered showers and thunderstorms
near 5000 feet and numerous showers and scattered thunderstorms
near 7000 feet. Lows 57-67. Highs 76-86.
$$
UTZ491-221115-
Southeast Utah-
112 PM MDT Thu Aug 21 2025
.TONIGHT...
Sky/weather.........Partly cloudy (30-40%). Isolated showers and
thunderstorms until 2400.
Chc of lightning....10 percent.
Min temperature.....66-76 F near 5000 feet
59-69 F near 8000 feet.
24 hr trend......1 degree warmer.
Max humidity........34-44%.
24 hr trend......4% drier.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................0 percent.
Mixing Height.......12000 ft AGL until 2000, then 1500 ft AGL.
Transport Winds.....Northwest 5 to 10 mph until 2400, then east.
Clearing Index......950 until 2000, then less than 500.
.FRIDAY...
Sky/weather.........Partly cloudy (30-40%). Near 5000 feet,
isolated showers and thunderstorms after 1200.
near 8000 feet, scattered showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....93-103 F near 5000 feet
78-88 F near 8000 feet.
24 hr trend......1 degree cooler.
Min humidity........12-17%.
24 hr trend......1% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......2500 ft AGL until 1100. 13000 ft AGL after
1400.
Transport Winds.....East 5 mph until 1200, then northwest.
Clearing Index......Less than 500 until 1400. 1050 after 1600.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and
isolated thunderstorms until 2400. Isolated
showers after 2400.
Chc of lightning....20 percent.
Min temperature.....65-75 F near 5000 feet
56-66 F near 8000 feet.
24 hr trend......2 degrees cooler.
Max humidity........37-47%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 4 to 8 mph becoming
downslope/downvalley 3 to 6 mph by sunset.
CWR.................10 percent.
Mixing Height.......10000 ft AGL until 2000. 1000 ft AGL after
2100.
Transport Winds.....North 5 to 10 mph until 2400, then east.
Clearing Index......950 until 2000. Less than 500 after 2100.
.SATURDAY...
Sky/weather.........Partly cloudy (40-50%). Scattered showers and
thunderstorms after 1200.
Chc of lightning....20 percent.
Max temperature.....90-100 F near 5000 feet
77-87 F near 8000 feet.
24 hr trend......1 degree cooler.
Min humidity........12-22%.
24 hr trend......3% wetter.
20-foot winds.......Downslope/downvalley 3 to 6 mph becoming
upslope/upvalley 4 to 8 mph by 1100.
CWR.................10 percent.
Mixing Height.......3000 ft AGL until 1100, then 13000 ft AGL.
Transport Winds.....East 5 mph until 1200, then north.
Clearing Index......Less than 500 until 1300. 1050 after 1600.
.FORECAST FOR DAY 3 THROUGH 7...
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms .
Lows 62-72. Highs 85-95. Winds less than 15 mph.
.MONDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 5000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 60-70. Highs 82-92. Winds
less than 15 mph.
.TUESDAY...Mostly cloudy. Scattered showers and thunderstorms
near 5000 feet and numerous showers and scattered thunderstorms
near 8000 feet. Lows 59-69. Highs 79-89. Winds less than 15 mph.
.WEDNESDAY...Mostly cloudy. Numerous showers and scattered
thunderstorms near 5000 feet and numerous showers and scattered
thunderstorms near 8000 feet. Lows 57-67. Highs 75-85.
.THURSDAY...Partly cloudy near 5000 feet and mostly cloudy near
8000 feet. Scattered showers and thunderstorms. Lows 56-66.
Highs 77-87.
$$