905
FNUS75 KBOU 101443
FWSBOU

Spot Forecast for Pierson Park Command...COUNTY
National Weather Service Denver/Boulder CO
843 AM MDT Sun Aug 10 2025

If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...For the rest of this morning, light and variable
winds are expected to become easterly (possibly southeast) by
1000-1100 and then remain easterly into the afternoon. Scattered
showers and thunderstorms are expected this afternoon and evening.
Heavy rain, small hail, and wind gusts up to 50 mph will be
possible with the stronger thunderstorms. A wind shift or two will
be likely this afternoon/evening due to outflow from nearby
thunderstorms. Slightly drier air moved into the area this
morning, and could delay showers/thunderstorms until mid/late
afternoon.

The chance for showers/thunderstorms lingers through the evening,
but should end by midnight. Drier weather returns Monday and
continues into the middle part of the week.

.REST OF TODAY...

Sky/weather.........Partly cloudy (40-50 percent) until 1200, then
                    mostly cloudy (65-75 percent). Slight chance of
                    rain showers and thunderstorms after 1200 until
                    1300, then chance of rain showers and
                    thunderstorms.
CWR.................5 percent increasing to 42 percent.
Chance of thunder...56 percent.
Max temperature.....Around 61.
Min humidity........49 percent.
Wind (20 ft)........Variable up to 5 mph until 1000, then east 5 to
                    10 mph. Gusty and erratic winds expected near
                    thunderstorms after 1200.
Mixing height.......4800 ft AGL.
Transport winds.....Southeast 8 to 12 mph until 1600, then east.
Smoke dispersal.....Poor until 1200, then fair until 1600, then
                    poor.

TIME (MDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........45  45  48  64  64  64  75  75  75
Weather cov.....            SCH CHC CHC CHC CHC CHC
Weather type....            RW  RW  RW  RW  RW  RW
Tstm cov........            SCH CHC CHC CHC CHC CHC
CWR.............10  10  10  20  30  40  40  40  40
Chc of thdr (%).10  10  10  20  20  30  40  50  50
Temp............53  56  59  60  61  61  60  60  59
RH..............57  51  49  51  51  53  55  55  60
20 FT wind dir..SE  SE  E   E   E   E   E   E   E
20 FT wind spd..3   5   6   7   7   6   6   6   6
20 FT wind gust.6   7   9   12  12  12  9   9   12
Mix hgt (kft)...2.6 3.6 4.3 5.0 4.6 5.0 5.1 4.4 3.5
Transp wind dir.S   S   SE  SE  SE  SE  SE  E   E
Transp wind spd.9   8   9   10  10  10  10  9   10
Vrate kt-ft/1K..21  25  34  45  41  45  46  35  32
SmokeDispersion.P   P   P   F   F   F   F   P   P

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) until 2400, then
                    mostly clear (20-30 percent). Chance of
                    thunderstorms until 2400.
CWR.................15 percent decreasing to 2 percent overnight.
Chance of thunder...34 percent.
Min temperature.....Around 42.
Max humidity........100 percent.
Wind (20 ft)........East winds 5 to 9 mph until 2000, then variable
                    up to 5 mph. Gusty and erratic winds expected
                    near thunderstorms until 2100.
Mixing height.......1200 ft AGL until 2100, then Below 1000 FT AGL
                    until 2200, then 1500 ft AGL until 2300, then
                    Below 1000 FT AGL.
Transport winds.....East around 10 mph until 1900, then 8 to 9 mph
                    until 2100, then light until 2400, then west
                    around 8 mph until 0200, then 8 to 9 mph until
                    0400, then northwest 8 to 10 mph.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........75  79  68  64  60  57  34  22  20  18  13  17
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.............20  20  20  10  10  10  0   0   0   0   0   0
Chc of thdr (%).30  30  30  10  10  10  0   0   0   0   0   0
Temp............58  55  51  48  46  46  45  45  44  44  43  43
RH..............62  72  86  96  100 100 93  89  86  82  79  73
20 FT wind dir..E   SE  SE  S   S   SW  W   W   W   W   W   NW
20 FT wind spd..6   5   2   1   1   1   2   2   2   2   2   2
20 FT wind gust.14  12  10  9   8   7   6   6   6   7   7   8
Mix hgt (kft)...2.2 1.7 1.1 0.9 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.E   E   E   E   SE  SE  W   W   W   W   NW  W
Transp wind spd.10  7   5   5   3   3   5   5   6   7   7   7
Vrate kt-ft/1K..20  10  5   4   4   2   2   2   3   3   3   3
SmokeDispersion.P   P   P   P   P   P   P   P   P   P   P   P

$$
Forecaster...Meier
Requested by...Jerry McLarty
Type of request...WILDFIRE
.TAG 2519657.0/BOU
.DELDT 08/10/25
.FormatterVersion 2.0.0
.EMAIL bcsocommunications@bouldercounty.org