Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
228
FNUS75 KBOU 191054
FWSBOU
Spot Forecast for Kataka Fire...USFS
National Weather Service Denver/Boulder CO
454 AM MDT Tue Aug 19 2025
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION... Today will likely be dry with only a small chance
of an afternoon showers or weak storm. There will be light
westerly winds in the morning followed by easterly winds midday
through the evening. Minimum relative humidity will drop to around
30 percent.
Tonight, the humidity recovery will be between 75-85 percent.
Winds will return to the west. Temperatures will warm up on
Wednesday and Thursday with very dry conditions.
.REST OF TODAY...
Sky/weather.........Mostly sunny (0-10 percent) until 1100, then
partly cloudy (20-30 percent) until 1200, then
mostly cloudy (50-60 percent). Chance of rain
showers and thunderstorms after 1200.
CWR.................7 percent.
Chance of thunder...30 percent.
Max temperature.....Around 59.
Min humidity........29 percent.
Wind (20 ft)........Northwest winds 5 to 12 mph until 1100, then
east 6 to 11 mph until 1300, then 7 to 12 mph.
Gusty and erratic winds expected near
thunderstorms after 1200.
Mixing height.......1100 ft AGL until 1000, then 5900 ft AGL.
Transport winds.....Northwest 8 to 11 mph until 1200, then
northeast around 10 mph until 1300, then east.
Smoke dispersal.....Poor until 1000, then fair until 1100, then
good until 1400, then fair.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1 10 27 51 53 55 57 53 53
Weather cov..... CHC CHC CHC CHC CHC CHC
Weather type.... RW RW RW RW RW RW
Tstm cov........ CHC CHC CHC CHC CHC CHC
CWR.............0 0 0 10 10 10 10 10 10
Chc of thdr (%).0 0 0 30 30 30 30 30 30
Temp............53 57 58 59 58 57 57 56 55
RH..............43 33 29 29 33 37 38 42 43
20 FT wind dir..NW W NE E E E E E E
20 FT wind spd..7 7 8 9 9 10 10 10 10
20 FT wind gust.12 12 13 15 15 16 16 16 16
Mix hgt (kft)...1.1 6.5 8.1 8.1 7.1 5.7 5.2 5.0 4.4
Transp wind dir.W NW NW NE E E NE E E
Transp wind spd.9 8 9 10 12 12 12 12 12
Vrate kt-ft/1K..8 46 65 73 71 57 52 50 44
SmokeDispersion.P F G G G F F F F
.TONIGHT...
Sky/weather.........Mostly clear (20-30 percent). Slight chance of
rain showers and thunderstorms until 2000.
CWR.................4 percent.
Chance of thunder...15 percent.
Min temperature.....Around 41.
Max humidity........86 percent.
Wind (20 ft)........East winds 8 to 13 mph until 2100. West 10 to
15 mph after 0400. Gusty and erratic winds
expected near thunderstorms until 2000.
Mixing height.......2900 ft AGL until 1900, then Below 1000 FT AGL.
Transport winds.....East 9 to 14 mph until 2200. Southwest 11 to 16
mph after 2400.
Smoke dispersal.....Poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 35 25 30 20 17 11 7 7 8 8 8
Weather cov.....SCH SCH
Weather type....RW RW
Tstm cov........SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).20 20 10 10 10 10 0 0 0 0 0 0
Temp............54 53 50 47 46 45 44 44 43 42 43 42
RH..............47 52 61 71 73 76 79 82 82 86 79 82
20 FT wind dir..E E E SE SE S S SW W W W W
20 FT wind spd..10 10 10 10 10 10 10 10 12 13 12 12
20 FT wind gust.16 16 16 16 16 16 16 16 18 21 18 18
Mix hgt (kft)...2.9 0.9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.E E E SE S S SW SW SW W W W
Transp wind spd.10 12 10 10 12 12 13 13 13 13 13 14
Vrate kt-ft/1K..26 9 0 0 0 0 0 0 0 0 0 0
SmokeDispersion.P P P P P P P P P P P P
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20 percent) until 1200, then
partly cloudy (35-45 percent). Slight chance of
rain showers and thunderstorms after 1200.
CWR.................0 percent increasing to 10 percent in the
afternoon.
Chance of thunder...21 percent.
Max temperature.....Around 62.
Min humidity........26 percent.
Wind (20 ft)........West winds 9 to 14 mph until 1100, then
northeast until 1200, then east 8 to 13 mph
with gusts to around 20 mph. Gusty and erratic
winds expected near thunderstorms after 1200.
Mixing height.......Below 1000 FT AGL until 1000. 5500 ft AGL after
1200.
Transport winds.....West 9 to 14 mph until 1000. East 10 to 15 mph
after 1600.
Smoke dispersal.....Poor until 1200, then fair until 1300, then
good until 1400, then fair until 1700, then
poor.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8 15 5 3 7 24 40 41 42 43 41 40
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 20 20 20 20 20 20
Temp............41 44 49 51 57 59 61 62 62 61 61 60
RH..............79 68 54 48 35 30 27 26 28 31 31 32
20 FT wind dir..W W W W NW NE E E E E E E
20 FT wind spd..14 12 10 9 9 9 9 10 10 12 12 10
20 FT wind gust.18 16 15 15 16 17 18 20 20 20 20 20
Mix hgt (kft)...0.1 0.1 0.1 0.1 3.8 5.6 7.2 6.8 6.1 5.4 4.6 3.8
Transp wind dir.W W W W NW NW N N NE NE NE E
Transp wind spd.14 12 10 9 9 9 9 10 12 12 12 12
Vrate kt-ft/1K..0 0 0 1 27 40 58 61 58 54 46 38
SmokeDispersion.P P P P P P F G F F F P
$$
Forecaster...Danielson
Requested by...David Waters
Type of request...WILDFIRE
.TAG 2520134.1/BOU
.DELDT 08/19/25
.FormatterVersion 2.0.0
.EMAIL david.waters@usda.gov