Spot Forecast
Issued by NWS Atlanta, GA
Issued by NWS Atlanta, GA
819
FNUS72 KFFC 040843
FWSFFC
Spot Forecast for 2D/3F...USFWS
National Weather Service Peachtree City GA
443 AM EDT Fri Apr 4 2025
Forecast is based on ignition time of 1000 EDT on April 04.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
Good morning, Nathan. Warm conditions are expected at the burn site
underneath partly to mostly cloudy skies, with temperatures climbing
over 80 between 11 AM and 12 PM and rising to a high of 88 in the
mid to late afternoon. Relative humidity values will be above 80
percent at ignition time, and remain above 50 percent through the
early afternoon. A minimum RH of 45 percent is forecast by 5 PM this
afternoon. 20 ft winds will be S throughout the day at the burn
site, at 3 mph or less throughout the morning and increasing to 5
mph after 1 PM. Transport winds at the burn site will be S at 10-15
mph. Mixing heights this afternoon will increase to above 6000 ft by
3 PM and into the late afternoon. Surface winds will become S/SE at
3 mph tonight and into early Saturday morning as the atmosphere
decouples. With ample low-level moisture, RH values will rise to as
high as 97 percent early Saturday morning. These light winds and
high RH values could be favorable for the development of patchy fog
around the burn site, as indicated by LVORI of 7-8. Patchy fog will
be most likely between 6-9 AM on Saturday. Please feel free to
contact us if you have any further questions or concerns.
.REST OF TODAY...
Sky/weather.........Partly sunny (65-75 percent).
Max temperature.....Around 88.
Min humidity........45 percent.
Dewpoint............66.
Wind (20 ft)........Light winds becoming south around 5 mph in the
afternoon.
Mixing height.......6300 ft AGL.
Transport winds.....South 10 to 14 mph.
Smoke dispersal.....Fair (26200 knot-ft) early in the morning
increasing to good (56300 knot-ft) in the
afternoon.
LVORI...............3.
ADI.................32 early in the morning increasing to 81 in the
afternoon.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........63 63 66 64 68 73 69 71
Weather cov.....
Weather type....
Tstm cov........
Temp............73 78 82 84 86 87 88 88
Dewpoint........68 68 68 67 66 65 65 64
RH..............84 71 63 57 52 49 47 45
20 FT wind dir..S S S S S S S S
20 FT wind spd..1 2 3 5 5 5 5 5
20 FT wind gust.9 10 12 13 13 13 14 13
Mix hgt (kft)...2.3 3.0 3.7 5.2 5.9 6.0 6.2 6.3
Transp wind dir.S S S S S S S S
Transp wind spd.10 14 14 12 10 10 10 10
LVORI...........4 3 1 1 1 1 1 1
ADI.............32 50 58 63 68 70 81 79
Vrate kt-ft/1K..26 35 39 48 53 54 55 56
Ventrate Cat....PR PR PR FR FR FR FR FR
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70 percent) then becoming
partly cloudy (35-45 percent) then becoming
mostly cloudy (50-60 percent) then becoming
partly cloudy (40-50 percent).
Min temperature.....Around 64.
Max humidity........97 percent.
Dewpoint............65.
Wind (20 ft)........Light winds.
Mixing height.......200 ft AGL.
Transport winds.....South 2 to 8 mph.
Smoke dispersal.....Good (42300 knot-ft) early in the evening
decreasing to poor (400 knot-ft) late in the
night.
LVORI...............4.
ADI.................1 to 33.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........60 63 46 37 44 53
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Temp............87 82 75 72 71 67
Dewpoint........64 66 65 66 66 65
RH..............47 58 72 81 85 93
20 ft wind......S 3 SE 1 SE 1 S 1 S 1 SE 1
20 ft wind gust.12 9 8 8 9 8
Mix hgt (ft)....3200 200 200 200 200 200
Transport wind..S 8 SE 2 SE 2 S 2 S 2 S 2
LVORI...........1 3 4 5 5 7
ADI.............33 1 1 1 1 1
Vrate kt-ft/1K..42 1 1 0 0 0
Ventrate Cat....FAIR POOR POOR POOR POOR POOR
.SATURDAY...
Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 88.
Min humidity........39 percent.
Dewpoint............64 decreasing to 60 late in the afternoon.
Wind (20 ft)........Light winds becoming south 5 to 6 mph late in
the morning.
Mixing height.......6200 ft AGL.
Transport winds.....Southeast 1 to 6 mph increasing to southwest 12
to 16 mph in the late morning and afternoon.
Smoke dispersal.....Poor (400 knot-ft) early in the morning
increasing to excellent (82300 knot-ft) in the
afternoon.
LVORI...............5.
ADI.................1 early in the morning increasing to 110 in the
afternoon.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........41 48 32 44 47 36
Weather cov.....
Weather type....NONE NONE NONE NONE NONE NONE
Tstm cov........
Temp............66 65 73 81 86 88
Dewpoint........64 64 66 65 62 60
RH..............95 95 77 58 46 40
20 ft wind......SE 1 SE 1 S 3 S 5 S 6 S 6
20 ft wind gust.8 8 12 14 17 18
Mix hgt (ft)....200 200 2200 3600 5800 6100
Transport wind..S 1 SE 2 S 12 SW 16 SW 15 S 16
LVORI...........8 7 3 1 1 1
ADI.............1 2 32 74 102 109
Vrate kt-ft/1K..0 0 29 47 75 81
Ventrate Cat....POOR POOR POOR FAIR GOOD GOOD
$$
Forecaster...King
Requested by...Nathan Herron
Type of request...PRESCRIBED
.TAG 2508830.0/FFC
.DELDT 04/04/25
.FormatterVersion 2.0.0
.EMAIL nathan_herron@fws.gov,carl_schmidt@fws.gov