Spot Forecast
Issued by NWS Atlanta, GA
Issued by NWS Atlanta, GA
111
FNUS72 KFFC 302018
FWSFFC
Spot Forecast for Blackjack Crossing West Unit...The Nature Conservancy
National Weather Service Peachtree City GA
418 PM EDT Tue Apr 30 2024
Forecast is based on ignition time of 1607 EDT on April 30.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
Dry conditions are expected for the remainder of the afternoon
and into tomorrow. Patchy fog is possible early Wednesday morning.
Surface winds on Wednesday will be out of the NW early in the
morning but shift to a more north or northeast direction by
mid to late morning. However, speeds will be very light and
generally average 3-5 mph or less. For transport winds,
the direction will be very similar to the surface component.
Transport wind speeds from mid morning through the early
afternoon will likely a average 5 to 7 mph, but drop off to
less than 5 mph by the late afternoon.
.REST OF TODAY...
Sky/weather.........Mostly sunny (40-50 percent). Showers likely
and slight chance of thunderstorms.
CWR.................60 percent.
LAL.................3.
Max temperature.....Around 82.
Min humidity........47 percent.
Dewpoint............59.
Wind (20 ft)........West winds 6 to 7 mph. Gusty and erratic winds
expected near thunderstorms.
Mixing height.......4600 ft AGL.
Transport winds.....Southwest 8 to 9 mph.
Smoke dispersal.....Good (30200 knot-ft).
LVORI...............1.
ADI.................31 to 38.
Haines Index........4 or low potential for large plume dominated
fire growth.
Pcpn amount.........0.09 inches.
CEILING (KFT).......5.0 increasing to 7.0 late in the afternoon.
TIME (EDT) 4PM 5PM
Sky (%).........44 44
Weather cov.....LKY LKY
Weather type....RW RW
Tstm cov........SCH SCH
CWR.............60 60
LAL.............3 3
Temp............80 79
Dewpoint........59 60
RH..............49 52
20 FT wind dir..W W
20 FT wind spd..7 6
20 FT wind gust.12 12
Mix hgt (kft)...4.6 4.4
Transp wind dir.SW SW
Transp wind spd.9 8
LVORI...........1 1
ADI.............38 31
Haines index....4 4
Vrate kt-ft/1K..37 30
Ventrate Cat....PR PR
Ceiling (kft)...5.0 7.0
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Chance of
showers and slight chance of thunderstorms
early in the evening. Patchy fog early in the
morning.
CWR.................40 percent decreasing to 30 percent early in
the evening, then decreasing to 10 percent
early in the evening.
LAL.................3 until 1900, then 2 until 2000, then 1.
Min temperature.....Around 61.
Max humidity........99 percent.
Dewpoint............62.
Wind (20 ft)........West winds around 5 mph becoming light. Gusty
and erratic winds expected near thunderstorms
early in the evening.
Mixing height.......200 ft AGL.
Transport winds.....West 3 to 7 mph shifting to the northwest
around 3 mph after 3 am.
Smoke dispersal.....Fair (22800 knot-ft) early in the evening
decreasing to poor (500 knot-ft) late in the
night.
LVORI...............6.
ADI.................1 to 18.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
Pcpn amount.........0.09 inches.
CEILING (KFT).......9.0 increasing to 15 in the evening and
overnight, then decreasing to 12 overnight
decreasing to 8.0 after 3 am decreasing to 4.0
decreasing to 1.8 early in the morning.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........47 30 15 22 30 33
Weather cov.....CHANCE
Weather type....RNSHWR NONE NONE NONE NONE NONE
Tstm cov........S CHC
CWR.............40 10 10 10 0 0
LAL.............3 1 1 1 1 1
Temp............79 75 69 66 65 64
Dewpoint........61 63 63 63 63 62
RH..............55 66 80 88 91 95
20 ft wind......W 5 W 2 W 3 W 2 SW 2 NW 2
20 ft wind gust.9 6 5 3 3 3
Mix hgt (ft)....2300 200 200 200 200 200
Transport wind..SW 7 W 3 W 3 W 3 W 3 W 3
LVORI...........2 3 5 6 7 9
ADI.............18 2 2 1 1 1
Haines index....4 4 4 3 3 3
Vrate kt-ft/1K..23 1 1 1 1 1
Ventrate Cat....POOR POOR POOR POOR POOR POOR
Ceiling (kft)...9.0 15 15 15 12 4.0
.WEDNESDAY...
Sky/weather.........Mostly sunny (25-35 percent). Patchy fog early
in the morning.
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 87.
Min humidity........35 percent.
Dewpoint............62 decreasing to 56 late in the afternoon.
Wind (20 ft)........Light winds becoming north around 5 mph late in
the morning, then becoming light late in the
afternoon.
Mixing height.......7100 ft AGL.
Transport winds.....Northwest 2 to 5 mph shifting to the northeast
3 to 8 mph in the late morning and afternoon.
Smoke dispersal.....Poor (500 knot-ft) early in the morning
increasing to fair (25600 knot-ft) in the
afternoon.
LVORI...............5.
ADI.................1 to 41.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
Pcpn amount.........0.00 inches.
CEILING (KFT).......5.0 increasing to 12 early in the morning, then
increasing to 15 early in the morning
increasing to 20 late in the morning decreasing
to 15 decreasing to 12 early in the afternoon
increasing to 15 increasing to 20 late in the
afternoon increasing to 25.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........49 45 21 11 15 25
Weather cov.....PATCHY PATCHY
Weather type....FOG FOG NONE NONE NONE NONE
Tstm cov........
CWR.............0 0 0 0 0 0
LAL.............1 1 1 1 1 1
Temp............64 64 72 80 83 85
Dewpoint........63 64 64 62 58 56
RH..............96 99 75 55 42 37
20 ft wind......NW 2 NW 1 N 3 N 5 N 5 N 3
20 ft wind gust.3 2 6 8 8 7
Mix hgt (ft)....200 200 2500 4000 6400 7000
Transport wind..NW 2 NW 2 N 7 NE 7 N 5 NE 3
LVORI...........9 8 3 1 1 1
ADI.............1 2 21 37 35 33
Haines index....3 3 3 3 4 4
Vrate kt-ft/1K..1 1 17 23 26 25
Ventrate Cat....POOR POOR POOR POOR POOR POOR
Ceiling (kft)...5.0 15 20 20 12 20
$$
Forecaster...NListemaa
Requested by...Mike Thompson
Type of request...PRESCRIBED
.TAG 2412830.0/FFC
.DELDT 04/30/24
.FormatterVersion 2.0.0
.EMAIL michael.thompson@tnc.org