Spot Forecast
Issued by NWS Denver/Boulder, CO

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FNUS75 KBOU 170527
FWSBOU

Spot Forecast for Bear Creek Fire...USFS
National Weather Service Denver/Boulder CO
1127 PM MDT Sun Jun 16 2024

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

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MDT MONDAY...

.DISCUSSION...Clear overnight with poor humidity recovery of only
35 to 40 percent.  Winds will be southwest at 5 to 10 mph.  On
Monday it will remain dry with critical fire weather conditions
from late morning through early Monday evening.  Minimum humidity
will be around 10 percent.  Winds will be southwest 10 to 15 mph
with gusts to 20 mph until 1200, then increase to 15 to 20 mph
with gusts to 30 mph.

.REST OF TONIGHT...

Sky/weather.........Clear (0-10 percent).
CWR.................1 percent.
LAL.................1.
Min temperature.....Around 55.
Max humidity........38 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph.
Mixing height.......Below 1000 FT AGL.
Transport winds.....Light winds until 2400, then south 8 to 13 mph.
Smoke dispersal.....Poor.
Haines Index........6 or high potential for large plume dominated
                    fire growth.

TIME (MDT)      11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........7   5   5   3   3   5   6
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1
Temp............68  66  64  62  60  59  58
RH..............29  28  29  30  30  30  30
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..5   6   7   7   7   8   8
20 FT wind gust.7   9   12  12  12  13  13
Mix hgt (kft)...0.6 0.6 0.6 0.6 0.6 0.5 0.5
Transp wind dir.W   SW  S   S   S   S   S
Transp wind spd.7   8   8   9   12  12  13
Haines index....6   6   6   6   6   6   6
Vrate kt-ft/1K..4   4   4   5   6   5   6
SmokeDispersion.P   P   P   P   P   P   P

.MONDAY...

Sky/weather.........Mostly sunny (10-20 percent).
CWR.................1 percent.
LAL.................1.
Max temperature.....Around 88.
Min humidity........10 percent.
Wind (20 ft)........Southwest winds 10 to 15 mph with gusts to
                    around 20 mph until 1200, then 15 to 20 mph
                    with gusts to around 30 mph.
Mixing height.......Below 1000 FT AGL until 0800. 13900 ft AGL
                    after 1500.
Transport winds.....Southwest 12 to 21 mph until 1100, then 24 to
                    29 mph.
Smoke dispersal.....Poor until 0900, then fair until 1000, then
                    very good until 1100, then excellent.
Haines Index........6 or high potential for large plume dominated
                    fire growth.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  9   7   9   9   11  14  13  15  15  17  18
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............56  60  64  68  76  81  82  84  86  87  87  88
RH..............34  32  30  27  19  15  13  12  11  10  11  11
20 FT wind dir..SW  SW  SW  SW  SW  SW  S   SW  SW  SW  SW  SW
20 FT wind spd..9   8   8   9   10  13  14  15  16  17  17  18
20 FT wind gust.15  13  13  15  16  21  22  24  25  28  28  30
Mix hgt (kft)...0.5 0.8 1.5 3.5 6.5 8.5 9.8 11  12  13  14  14
Transp wind dir.S   S   S   SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.12  12  14  17  21  25  24  25  26  28  29  28
Haines index....6   6   6   6   6   6   6   6   6   6   6   6
Vrate kt-ft/1K..5   8   17  53  117 186 205 237 271 308 342 335
SmokeDispersion.P   P   P   F   VG  E   E   E   E   E   E   E

.MONDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 52.
Max humidity........44 percent.
Wind (20 ft)........Southwest winds 8 to 16 mph with gusts to
                    around 31 mph until 0400, then west 6 to 11
                    mph.
Mixing height.......13500 ft AGL until 1900. Below 1000 FT AGL
                    after 2100.
Transport winds.....Southwest 17 to 26 mph until 2200, then 10 to
                    16 mph until 0500, then southeast around 10
                    mph.
Smoke dispersal.....Excellent until 1900. Poor after 0500.
Haines Index........6 or high potential for large plume dominated
                    fire growth.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........16  13  11  9   7   5   3   4   6   7   7   7
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............86  85  80  74  72  69  66  64  62  59  56  54
RH..............12  12  14  17  18  20  22  24  27  31  37  44
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  W   W   W
20 FT wind spd..16  15  14  13  12  10  10  9   9   8   8   8
20 FT wind gust.31  29  28  25  23  21  18  16  15  14  13  12
Mix hgt (kft)...14  6.2 1.6 0.9 0.7 0.7 0.6 0.6 0.6 0.5 0.5 0.6
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  S   SE
Transp wind spd.26  20  18  17  16  14  13  13  12  12  10  10
Haines index....6   6   6   6   6   6   6   6   6   6   6   6
Vrate kt-ft/1K..309 105 26  14  10  8   7   7   6   5   5   5
SmokeDispersion.E   VG  P   P   P   P   P   P   P   P   P   P

.TUESDAY...

Sky/weather.........Mostly sunny (10-20 percent) until 1100, then
                    partly cloudy (35-45 percent) until 1700, then
                    mostly cloudy (45-55 percent). Slight chance of
                    rain showers and thunderstorms after 1200.
CWR.................6 percent.
LAL.................1 until 1200, then 3.
Max temperature.....Around 76.
Min humidity........24 percent.
Wind (20 ft)........West winds 5 to 12 mph until 0800, then
                    southeast 5 to 13 mph with gusts to around 22
                    mph until 1200, then east 9 to 14 mph with
                    gusts to around 25 mph until 1700, then around
                    10 mph with gusts to around 23 mph. Gusty and
                    erratic winds expected near thunderstorms after
                    1200.
Mixing height.......Below 1000 FT AGL until 0700. 6900 ft AGL after
                    1100.
Transport winds.....Southeast 8 to 17 mph until 1500, then east 14
                    to 19 mph.
Smoke dispersal.....Poor until 1100, then good until 1300, then
                    very good until 1600, then good.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........9   11  12  14  24  35  45  45  45  45  48  52
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
LAL.............1   1   1   1   1   1   3   3   3   3   3   3
Temp............53  54  56  60  64  68  71  74  75  75  75  73
RH..............41  43  42  41  37  33  29  26  24  24  25  29
20 FT wind dir..W   W   SE  E   E   E   E   E   E   E   E   E
20 FT wind spd..8   6   5   7   9   10  10  10  10  12  12  10
20 FT wind gust.13  14  15  16  18  22  24  25  25  25  24  23
Mix hgt (kft)...0.6 M   2.0 2.7 4.1 5.5 6.9 7.2 7.4 7.7 6.4 5.2
Transp wind dir.E   M   SE  SE  SE  SE  SE  SE  SE  SE  E   E
Transp wind spd.9   M   8   8   10  13  15  16  17  18  17  15
Haines index....5   5   5   5   5   5   5   5   5   5   5   5
Vrate kt-ft/1K..5   M   15  19  37  61  90  100 111 122 94  70
SmokeDispersion.P   M   P   P   P   G   G   VG  VG  VG  G   G

$$
Forecaster...RPK
Requested by...David Waters
Type of request...WILDFIRE
.TAG 2416272.0/BOU
.DELDT 06/16/24
.FormatterVersion 2.0.0
.EMAIL David.waters@usda.gov