031
FNUS75 KBOU 181709
FWSBOU

Spot Forecast for Hillview Fire...Elk Creek Fire
National Weather Service Denver/Boulder CO
1109 AM MDT Mon Aug 18 2025

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

.DISCUSSION...Scattered afternoon showers and thunderstorms are
expected to initiate in the next hour or two. The main hazard with
these storms today will be lightning and gusty outflows. Gusts
between 35-45mph will be possible in and near showers/storms.
There could be some small hail, but the heaviest rains are
expected to be east of your location. Current observations in the
area show winds are light from the NE with gusts to around 10 mph.
Winds should remain light with some sort of east/northeast
component through the afternoon (outside of thunderstorms) before
transitioning to the southeast this evening. Minimum RH values
should stay above 20% today with decent recoveries expected
overnight tonight (~60%).


.REST OF TODAY...

Sky/weather.........Partly cloudy (25-35 percent) until 1200, then
                    mostly cloudy (55-65 percent). Chance of
                    showers and thunderstorms after 1200.
CWR.................1 percent increasing to 12 percent in the
                    afternoon.
Chance of thunder...40 percent.
Max temperature.....Around 78.
Min humidity........28 percent.
Wind (20 ft)........East winds 5 to 8 mph until 1400, then
                    northeast around 6 mph until 1500, then 5 to 8
                    mph until 1700, then southeast around 6 mph.
                    Gusty and erratic winds expected near
                    thunderstorms after 1200.
Mixing height.......7500 ft AGL until 1600, then 4700 ft AGL.
Transport winds.....Southeast 8 to 13 mph until 1400, then west
                    until 1500, then north around 10 mph until
                    1600, then northwest around 9 mph until 1700,
                    then light.
Smoke dispersal.....Fair until 1200, then good until 1500, then
                    fair until 1700, then poor.

TIME (MDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........32  59  59  59  60  60  60
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   10  10  10  10  10  10
Chc of thdr (%).0   40  40  40  40  40  40
Temp............75  76  77  75  74  74  72
RH..............29  28  28  31  32  32  35
20 FT wind dir..E   E   E   NE  NE  NE  SE
20 FT wind spd..6   6   6   6   6   6   6
20 FT wind gust.8   9   9   9   9   9   9
Mix hgt (kft)...6.0 7.6 8.7 8.1 5.8 5.0 3.3
Transp wind dir.S   SE  S   W   N   NW  SW
Transp wind spd.8   10  12  13  10  9   7
Vrate kt-ft/1K..42  68  88  90  52  40  20
SmokeDispersion.F   G   G   G   F   F   P

$$
Forecaster...Bonner
Requested by...Jacob Ware
Type of request...WILDFIRE
.TAG 2520142.0/BOU
.DELDT 08/18/25
.FormatterVersion 2.0.0
.EMAIL supervisors@jeffcom911co.gov