Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
502
FNUS75 KBOU 311245
FWSBOU
Spot Forecast for Forsythe II - Unit 44...USFS
National Weather Service Denver/Boulder CO
645 AM MDT Fri May 31 2024
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...A slightly cooler airmass will be in place today for
the burn area. With the chance of afternoon thunderstorms, gusty
variable-in-direction outflow winds up to 35 mph are possible in
and around the burn area. Smoke dispersal will be good for a few
hours this afternoon.
.REST OF TODAY...
Sky/weather.........Partly cloudy (40-50 percent) until 1300, then
mostly cloudy (55-65 percent). Chance of rain
showers and thunderstorms after 1200.
CWR.................12 percent.
Chance of pcpn......30 percent.
LAL.................1 until 1200, then 3 until 1500, then 4 until
1700, then 3.
Max temperature.....Around 65.
Min humidity........33 percent.
Wind (20 ft)........Variable 5 to 10 mph. Gusty and erratic winds
near thunderstorms.
Mixing height.......3200 ft AGL until 1200, then 6000 ft AGL.
Transport winds.....North 8 to 9 mph until 0900, then light until
1000, then west 9 to 16 mph.
Smoke dispersal.....Poor until 1200, then fair until 1300, then
good.
Haines Index........4 or low potential for large plume dominated
fire growth.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........39 42 45 46 47 50 53 61 69 67 65
Weather cov..... SCH CHC CHC CHC CHC SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH CHC CHC SCH
CWR.............0 0 0 0 0 10 10 10 10 10 10
Chc of pcpn (%).10 10 10 10 10 20 30 30 30 30 20
LAL.............1 1 1 1 1 3 3 3 4 4 3
Temp............45 47 51 55 58 61 63 65 65 66 66
RH..............70 71 61 55 51 48 43 38 37 34 33
20 FT wind dir..SW SE E E E E E N NW NW W
20 FT wind spd..2 3 5 6 6 6 6 6 6 6 6
20 FT wind gust.3 6 7 9 9 9 9 9 9 9 9
Mix hgt (kft)...1.2 1.4 2.1 2.9 3.8 4.8 5.6 6.1 5.5 5.9 5.9
Transp wind dir.NW N W W W W W W W W W
Transp wind spd.6 6 7 9 12 13 14 14 13 14 16
Haines index....4 4 4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..6 7 12 24 38 53 67 73 61 71 83
SmokeDispersion.P P P P P F G G G G G
.TONIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) until 2200, then
partly cloudy (30-40 percent). Slight chance of
rain showers and thunderstorms until 2100.
CWR.................5 percent.
Chance of pcpn......20 percent.
LAL.................3 until 2100, then 1.
Min temperature.....Around 45.
Max humidity........66 percent.
Wind (20 ft)........West winds 5 to 7 mph. Gusty and erratic winds
expected near thunderstorms until 2100.
Mixing height.......4200 ft AGL until 1900. Below 1000 FT AGL after
2000.
Transport winds.....West 8 to 16 mph.
Smoke dispersal.....Fair until 1900, then poor.
Haines Index........4 or low potential for large plume dominated
fire growth.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........63 61 60 59 46 33 36 31 35 36 32 22
Weather cov.....SCH SCH SCH
Weather type....RW RW RW
Tstm cov........SCH SCH SCH
CWR.............10 10 10 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).20 20 20 10 10 10 0 0 0 0 0 0
LAL.............3 3 3 1 1 1 1 1 1 1 1 1
Temp............64 60 56 52 50 48 48 48 48 48 46 45
RH..............35 42 53 61 66 65 60 56 51 49 51 53
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..5 5 3 3 5 5 5 6 6 7 7 7
20 FT wind gust.7 7 6 6 7 7 7 9 9 12 12 12
Mix hgt (kft)...4.2 2.3 0.8 0.8 0.8 0.7 0.7 0.7 0.7 0.7 0.7 0.7
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.16 10 9 8 9 9 10 12 12 10 12 12
Haines index....4 4 4 4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..58 21 7 5 6 5 6 7 7 6 7 7
SmokeDispersion.F P P P P P P P P P P P
.SATURDAY...
Sky/weather.........Mostly sunny (15-25 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.................6 percent.
Chance of pcpn......40 percent.
LAL.................1 until 1200, then 4.
Max temperature.....Around 74.
Min humidity........21 percent.
Wind (20 ft)........West winds 5 to 7 mph until 0900, then variable
up to 5 mph until 1000, then southwest 5 to 7
mph until 1300, then west until 1500, then 5 to
8 mph until 1700, then southwest around 6 mph.
Gusty and erratic winds expected near
thunderstorms after 1200.
Mixing height.......Below 1000 FT AGL until 0800, then 3600 ft AGL
until 1000, then 8000 ft AGL until 1200, then
11800 ft AGL until 1500, then 8100 ft AGL.
Transport winds.....West 12 to 21 mph until 1300, then 15 to 23
mph.
Smoke dispersal.....Poor until 0900, then fair until 1000, then
good until 1100, then very good until 1200,
then excellent until 1600, then very good until
1700, 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 (%).........18 23 24 21 25 27 57 57 57 57 57 57
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 0 0 0 10 10 10 10 10 10
Chc of pcpn (%).0 0 0 0 0 0 40 40 40 40 40 40
LAL.............1 1 1 1 1 1 4 4 4 4 4 4
Temp............46 50 56 62 67 70 71 72 73 74 74 73
RH..............51 48 40 32 26 23 23 22 22 21 22 24
20 FT wind dir..W W W SW SW SW W W W W W SW
20 FT wind spd..6 6 5 3 5 5 5 5 6 6 6 6
20 FT wind gust.9 9 7 6 7 7 7 7 9 9 9 9
Mix hgt (kft)...0.7 0.8 2.0 4.2 6.5 8.4 10 13 11 8.7 7.6 6.5
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.12 12 13 14 16 18 21 22 23 23 18 15
Haines index....5 5 5 5 5 5 5 5 5 5 5 5
Vrate kt-ft/1K..7 8 22 50 90 135 188 238 207 173 123 82
SmokeDispersion.P P P F G VG E E E E VG G
.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Partly cloudy. Lows in the upper 40s. Highs in the mid 70s.
Variable winds less than 10 mph.
.MONDAY...
Partly cloudy. Lows in the upper 40s. Highs in the upper 70s.
Variable winds less than 10 mph.
.TUESDAY...
Mostly cloudy with slight chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the mid 70s. West winds around
5 mph.
$$
Forecaster...RJK
Requested by...Ed LeBlanc
Type of request...PRESCRIBED
.TAG 2414199.13/BOU
.DELDT 05/31/24
.FormatterVersion 2.0.0
.EMAIL Edward.leblanc@usda.gov