Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
213
FNUS75 KBOU 291232
FWSBOU
Spot Forecast for Forsythe II - Unit 44...USFS
National Weather Service Denver/Boulder CO
632 AM MDT Wed May 29 2024
If conditions become unrepresentative...contact the National Weather
Service.
The best chance of storms and wetting rainfall will occur early afternoon.
Rainfall amount should remain light between a tenth of an inch or less.
Humidities could drop as low as 24-30 percent this afternoon.
Light west winds are possible until mid-day then shifting to southwest through
early evening. Generally wind speeds between 7-12 mph are possible today and tonight.
Smoke dispersal reaches very good conditions this afternoon.
Thursday, another round of scattered storms and showers are possible in the
afternoon hours. There is higher chances of wetting rainfall between a tenth to a quarter
inch. Westerly winds shift east by Thursday afternoon increasing between 7-12 mph once
more.
A chance of afternoon thunderstorms could occur each day through Saturday.
Drier conditions are possible by Sunday through early next week.
.REST OF TODAY...
Sky/weather.........Mostly sunny (10-20 percent) until 1000, then
partly cloudy (40-50 percent). Slight chance of
rain showers and thunderstorms after 1300 until
1400, then chance of rain showers and
thunderstorms until 1700
CWR.................9 percent increasing to 12 percent late in the
afternoon.
Chance of pcpn......30 percent.
LAL.................1 until 1300, then 3 until 1400, then 4 until
1700, then 3.
Max temperature.....Around 73.
Min humidity........24 percent.
Wind (20 ft)........West winds 5 to 8 mph until 0900, then variable
up to 5 mph until 1300, then south 5 to 8 mph
until 1600, then southwest 5 to 12 mph. Gusty
and erratic winds expected near thunderstorms
after 1300.
Mixing height.......Below 1000 FT AGL until 0800, then 1000 ft AGL
until 0900, then 3900 ft AGL until 1000, then
7400 ft AGL until 1100, then 11400 ft AGL until
1400, then 8900 ft AGL until 1700, then 6000 ft
AGL.
Transport winds.....West 9 to 14 mph until 1400, then southwest 13
to 18 mph until 1600, then west 12 to 17 mph.
Smoke dispersal.....Poor until 1000, then good until 1100, then
very good until 1600, then good.
Haines Index........5 or moderate potential for large plume
dominated fire growth.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........12 15 21 26 32 43 52 53 57 54 45
Weather cov..... SCH CHC CHC CHC SCH
Weather type.... RW RW RW RW RW
Tstm cov........ SCH CHC CHC CHC SCH
CWR.............0 0 0 0 0 10 10 10 10 10 10
Chc of pcpn (%).0 0 0 0 10 10 20 30 30 30 20
LAL.............1 1 1 1 1 1 3 4 4 4 3
Temp............51 55 63 67 69 70 72 70 70 69 67
RH..............59 49 38 30 27 25 24 25 26 26 28
20 FT wind dir..W W W SW S S S S SW SW SW
20 FT wind spd..8 5 3 2 2 3 5 5 7 7 7
20 FT wind gust.13 7 6 3 6 7 7 9 9 12 9
Mix hgt (kft)...0.7 1.0 3.9 7.4 10 11 11 8.7 9.5 7.2 6.0
Transp wind dir.W W W W W W W SW W W W
Transp wind spd.9 9 10 12 13 14 13 15 15 15 13
Haines index....5 5 5 5 5 5 5 5 5 5 5
Vrate kt-ft/1K..6 8 35 74 111 137 125 113 124 93 66
SmokeDispersion.P P P G VG VG VG VG VG G G
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Slight chance of
rain showers and thunderstorms until 2000.
CWR.................7 percent.
Chance of pcpn......20 percent.
LAL.................3 until 2000, then 1.
Min temperature.....Around 46.
Max humidity........59 percent.
Wind (20 ft)........West winds 5 to 8 mph. Gusty and erratic winds
expected near thunderstorms until 2000.
Mixing height.......5800 ft AGL until 1900. Below 1000 FT AGL after
2000.
Transport winds.....West 8 to 15 mph until 2100, then light until
2200, then west 8 to 15 mph.
Smoke dispersal.....Good until 1900, then poor.
Haines Index........5 or moderate potential for large plume
dominated fire growth.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........38 42 42 42 35 34 32 31 25 22 18 17
Weather cov.....SCH SCH
Weather type....RW RW
Tstm cov........SCH SCH
CWR.............10 10 10 10 0 0 0 0 0 0 0 0
Chc of pcpn (%).20 20 10 10 10 0 0 0 0 10 10 10
LAL.............3 3 2 1 1 1 1 1 1 1 1 1
Temp............71 68 64 60 57 54 53 52 51 49 48 47
RH..............25 28 32 37 40 43 43 43 44 48 51 56
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..7 6 6 5 5 6 6 6 7 7 7 7
20 FT wind gust.14 13 10 9 10 10 12 13 13 13 13 14
Mix hgt (kft)...5.8 2.2 0.8 0.7 0.7 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.15 9 8 7 8 10 12 13 13 14 14 15
Haines index....5 5 5 5 5 5 5 5 5 5 5 5
Vrate kt-ft/1K..75 17 6 4 5 6 7 7 8 8 9 9
SmokeDispersion.G P P P P P P P P P P P
.THURSDAY...
Sky/weather.........Mostly sunny (15-25 percent) until 1100, then
partly cloudy (25-35 percent) until 1200, then
mostly cloudy (60-70 percent). Slight chance of
thunderstorms after 1200 until 1500. Chance of
rain showers after 1200. Chance of
thunderstorms after 1500.
CWR.................5 percent increasing to 26 percent in the
afternoon.
Chance of pcpn......50 percent.
LAL.................1 until 1200, then 3 until 1500, then 4.
Max temperature.....Around 69.
Min humidity........31 percent.
Wind (20 ft)........West winds 5 to 13 mph until 1000. East 6 to 11
mph after 1200. Gusty and erratic winds
expected near thunderstorms after 1200 until
1500Gusty and erratic winds expected near
thunderstorms after 1500.
Mixing height.......Below 1000 FT AGL until 0800, then 2900 ft AGL
until 1000, then 6900 ft AGL until 1200, then
8400 ft AGL until 1600, then 5800 ft AGL.
Transport winds.....West 9 to 15 mph.
Smoke dispersal.....Poor until 1000, then fair until 1100, then
good until 1200, then very good until 1400,
then good until 1600, then fair.
Haines Index........4 or low potential for large plume dominated
fire growth.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........24 19 22 21 18 31 63 63 63 63 63 63
Weather cov..... CHC CHC CHC CHC CHC CHC
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH CHC CHC CHC
CWR.............10 10 10 10 10 10 30 30 30 30 30 30
Chc of pcpn (%).10 10 10 10 10 10 50 50 50 50 50 50
LAL.............1 1 1 1 1 1 3 3 3 4 4 4
Temp............46 49 53 56 61 64 65 66 67 67 67 65
RH..............59 55 49 46 37 36 32 32 31 32 33 37
20 FT wind dir..W W W W SW SE E E E E E E
20 FT wind spd..8 8 7 7 8 8 9 9 9 9 9 7
20 FT wind gust.13 13 12 12 13 13 15 15 15 15 15 12
Mix hgt (kft)...0.7 0.8 1.5 3.2 5.4 7.4 8.6 9.1 7.9 6.7 5.8 4.8
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.15 13 10 9 12 14 14 13 13 12 10 10
Haines index....4 4 4 4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..9 9 14 26 54 89 103 100 87 67 52 43
SmokeDispersion.P P P P F G VG VG G G F F
$$
Forecaster...AD
Requested by...Ed LeBlanc
Type of request...PRESCRIBED
.TAG 2414199.12/BOU
.DELDT 05/29/24
.FormatterVersion 2.0.0
.EMAIL Edward.leblanc@usda.gov