Suppression Forecast
Issued by NWS Greer, SC
Issued by NWS Greer, SC
531
FNUS72 KGSP 192225
FWSGSP
Spot Forecast for Sam Davis Road Fire...NCFS
National Weather Service Greenville-Spartanburg SC
625 PM EDT Sat Apr 19 2025
Forecast is based on forecast start time of 1800 EDT on April 19.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
Light and variable winds tonight with good RH recovery expected.
Light and mainly southerly surface winds are expected through Sunday
but with modest transport winds. RH will mix out a bit during the
afternoon but appears likely to bottom out around 35-40 percent.
A cold front will approach Monday and bring somewhat gustier
southwest winds during the afternoon, but also veer winds to a more
downslope direction. Dewpoints likely will mix out more than on
Sunday and there is a chance RH will fall below 35 percent near
peak heating prior to the front. Rain chances increase late Monday
afternoon, although rain is not likely to develop until after sunset.
.TONIGHT...
Sky/weather.........Increasing clouds (50-85 percent).
Chance of thunder...0 percent.
Min temperature.....Around 58.
Max humidity........89 percent.
Wind (20 ft)........Light winds.
Mixing height.......Dropping to around 800 ft AGL.
Transport winds.....Southwest 6 to 14 mph shifting to the southeast
5 to 7 mph in the late evening and overnight.
Smoke dispersal.....Becoming poor by late evening.
LVORI...............3.
ADI.................81 early in the evening decreasing to 2 late in
the night.
Stability class.....3.
Pcpn amount.........None.
Ceiling (FT)........Above 20000.
Visibility (SM).....Unlimited.
Sfc pressure (in)...27.33.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........56 49 58 48 71 76 73 74 79 84 82 89
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............85 81 77 73 70 67 65 63 61 61 60 59
Dewpoint........50 50 50 50 51 51 52 52 53 53 54 54
RH..............30 33 39 44 51 57 62 69 74 77 80 83
20 FT wind dir..SW SW SW SW S S SE E E E E E
20 FT wind spd..3 2 1 1 1 1 1 1 1 1 1 1
20 FT wind gust.12 10 8 7 6 6 6 5 5 5 3 3
Mix hgt (kft)...4.6 1.4 0.9 0.9 0.9 0.8 0.8 0.8 0.8 0.9 0.8 0.8
Transp wind dir.SW SW S S S S S SE SE SE SE SE
Transp wind spd.14 9 8 6 7 7 6 5 5 5 5 5
LVORI...........1 2 2 2 2 3 3 3 3 4 5 5
ADI.............81 4 4 3 3 3 3 2 2 2 2 2
VRate mph-ft/1k 64 13 7 5 6 6 5 4 4 4 4 4
Ceiling (hft)...250 250 250 250 250 250 250 250 250 240 240 240
Visibility (sm).10 10 10 10 10 10 10 10 10 10 10 10
Sfc pres (in)...736 736 736 736 737 737 737 736 736 735 734 733
.SUNDAY...
Sky/weather.........Partly sunny (60-70 percent).
Chance of thunder...4 percent.
Max temperature.....Around 82.
Min humidity........Most likely around 40 percent, but possibly as
low as 35 percent.
Wind (20 ft)........Light winds becoming south around 5 mph late in
the afternoon.
Mixing height.......5600 ft AGL.
Transport winds.....Southeast around 3 mph shifting to the south 5
to 13 mph in the late morning and afternoon.
Smoke dispersal.....Becoming excellent (68476 mph-ft) in the
afternoon.
LVORI...............4.
ADI.................2 early in the morning increasing to 78 in the
afternoon.
Stability class.....3.
Pcpn amount.........None.
Ceiling (FT)........Above 17000 through early afternoon then
decreasing to 6000 with development of cumulus.
Visibility (SM).....Unlimited.
Sfc pressure (in)...27.32.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........77 74 73 61 66 61 57 64 62 55 70 58
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............59 58 59 63 67 72 76 79 80 82 82 81
Dewpoint........54 55 55 57 58 60 59 58 57 57 56 55
RH..............86 89 88 79 72 65 56 49 45 41 40 40
20 FT wind dir..E E E SE SW SW SW S S S S S
20 FT wind spd..1 1 1 1 1 1 2 2 3 3 5 5
20 FT wind gust.3 3 5 5 5 5 6 7 9 10 12 12
Mix hgt (kft)...0.8 0.8 0.8 1.0 2.4 3.1 4.4 4.7 5.5 5.6 5.5 5.4
Transp wind dir.SE SE SE SE S S S S S S S S
Transp wind spd.3 3 3 3 5 6 7 8 8 10 12 13
LVORI...........6 6 6 4 3 3 1 1 1 1 1 1
ADI.............2 3 3 5 14 23 39 48 50 66 72 78
VRate mph-ft/1k 3 3 3 4 11 18 30 38 44 58 63 68
Ceiling (hft)...230 230 230 240 240 170 250 170 60 70 80 80
Visibility (sm).10 10 10 10 10 10 10 10 10 10 10 10
Sfc pres (in)...734 735 737 737 738 738 737 737 736 735 733 732
.SUNDAY NIGHT...
Sky/weather.........Partly to mostly cloudy (45-80 percent).
Chance of thunder...3 percent.
Min temperature.....Around 57.
Max humidity........86 percent.
Wind (20 ft)........Light southerly winds likely backing to
southeast overnight.
Mixing height.......900 ft AGL.
Transport winds.....South 8 to 13 mph.
Smoke dispersal.....Good (58694 mph-ft) early in the evening
decreasing to poor (7250 mph-ft) late in the
night.
LVORI...............3.
ADI.................69 early in the evening decreasing to 4 late in
the night.
Stability class.....4.
Pcpn amount.........None.
Ceiling (FT)........6000 to 8000 until cumulus dissipate, then above
20000.
Visibility (SM).....Likely unlimited.
Sfc pressure (in)...27.26.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........74 67 79 68 81 69 67 50 58 60 59 58
Weather cov.....
Weather type....
Tstm cov........
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............81 80 75 72 69 67 65 64 63 62 61 59
Dewpoint........55 55 55 55 55 55 55 54 54 53 53 53
RH..............40 42 50 54 60 67 70 71 71 74 76 80
20 FT wind dir..S S S SE SE SE SE SE SE SE SE SE
20 FT wind spd..5 5 5 3 3 3 3 3 5 3 3 3
20 FT wind gust.13 14 13 12 12 10 9 9 9 8 8 8
Mix hgt (kft)...4.6 2.1 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.0 0.9
Transp wind dir.S S S S S S S S S S S S
Transp wind spd.13 13 12 12 9 10 12 12 12 10 9 8
LVORI...........1 2 2 2 3 3 3 3 3 3 4 5
ADI.............69 8 8 8 6 7 8 8 8 7 6 4
VRate mph-ft/1k 59 26 13 12 9 11 13 13 13 11 9 7
Ceiling (hft)...80 80 240 240 60 60 60 240 240 240 240 210
Visibility (sm).10 10 10 10 10 10 10 10 10
Sfc pres (in)...732 731 731 731 730 729 728 727 726 726 727 727
.MONDAY...
Sky/weather.........Mostly sunny (45-55 percent). Slight chance of
rain showers late in the afternoon.
Chance of thunder...1 percent.
Max temperature.....Around 80.
Min humidity........38 percent.
Wind (20 ft)........Light winds becoming south 5 to 8 mph in the
late morning and afternoon.
Mixing height.......6400 ft AGL.
Transport winds.....South 6 to 15 mph shifting to the southwest 18
to 21 mph late in the morning.
Smoke dispersal.....Initially poor, becoming excellent (112324
mph-ft) by afternoon.
LVORI...............3.
ADI.................3 early in the morning increasing to 141 in the
afternoon.
Stability class.....3.
Pcpn amount.........0.01 inches if rain develops in the late
afternoon. Wetting rain becomes likely Monday
night or early Tuesday.
Ceiling (FT)........Above 15000, falling below 7000 late in the day.
Visibility (SM).....Likely unlimited.
Sfc pressure (in)...27.2.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........55 53 49 50 50 51 47 44 40 43 47 50
Weather cov..... SCH SCH
Weather type.... RW RW
Tstm cov........
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............58 58 57 61 66 69 72 74 77 78 78 80
Dewpoint........53 53 53 53 54 54 53 52 51 51 52 52
RH..............82 83 86 77 66 58 52 47 41 40 39 38
20 FT wind dir..SE SE S S S S S SW SW SW SW SW
20 FT wind spd..3 3 3 5 6 6 7 8 8 8 8 7
20 FT wind gust.8 8 7 9 12 14 15 16 16 16 16 15
Mix hgt (kft)...0.9 0.9 0.9 2.1 3.3 4.5 4.9 5.3 5.7 6.0 6.2 6.4
Transp wind dir.S S S S SW SW SW SW SW SW SW SW
Transp wind spd.7 6 7 10 15 18 20 20 20 21 21 20
LVORI...........5 4 5 3 1 1 1 1 1 1 1 1
ADI.............3 7 8 28 63 97 111 119 126 138 141 137
VRate mph-ft/10006 5 7 22 49 82 96 104 112 123 128 125
Ceiling (hft)...210 180 180 170 170 160 160 160 160 160 160 150
Visibility (sm).
Sfc pres (in)...728 728 728 727 727 726 725 724 724 722 721 720
$$
Forecaster...Jake Wimberley
Requested by...Ruthie Edwards
Type of request...WILDFIRE
.TAG 2511074.0/GSP
.DELDT 04/19/25
.FormatterVersion 2.0.0