Suppression Forecast
Issued by NWS Greer, SC

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000
FNUS72 KGSP 191915
FWSGSP

Spot Forecast for Boyd Gap Rx...USFS
National Weather Service Greenville-Spartanburg SC
315 PM EDT Thu Apr 19 2018

Forecast is based on ignition time of 1600 EDT on April 19.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Dry and cool high pressure will linger atop the region into Saturday.
Minimum RH Friday afternoon will likely drop down into the lower/middle
20 percent range, but wind should be relatively light from the NW.
Ahead of developing low pressure, moisture will return to the area
on Sunday, with unsettled weather continuing into early next week.

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 58.
Min humidity........33 percent.
Wind (20 ft)........Northwest winds around 16 mph with gusts to
                    around 21 mph.
Mixing height.......5100 ft AGL.
Transport winds.....Northwest 26 to 28 mph.
Smoke dispersal.....Excellent (118700 knot-ft).
LVORI...............1.
ADI.................84.
Pcpn amount.........0.00 inches.
Ceiling (FT)........12000.
Visibility (SM).....7.

TIME (EDT)      4 PM
Sky (%).........29
Weather cov.....
Weather type....NONE
Tstm cov........
Temp............57
Dewpoint........30
RH..............34
20 FT wind......NW 14G21
Mix hgt (ft)....5100
Transport wind..NW 28
LVORI...........1
ADI.............85
VRate kt-ft/1000121
Ceiling (hft)...120
Visibility (sm).7

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Min temperature.....Around 34.
Max humidity........83 percent.
Wind (20 ft)........Northwest winds 10 to 16 mph. Gusts up to 26
                    mph until early morning.
Mixing height.......2900-4600 ft AGL decreasing to 300 ft AGL.
Transport winds.....North 17 to 25 mph.
Smoke dispersal.....Good to excellent (54200-101500 knot-ft)
                    decreasing to poor to good (3800-50400 knot-ft)
                    after midnight.
LVORI...............3.
ADI.................75 decreasing to 23.
Pcpn amount.........0.00 inches.
Ceiling (FT)........19000 increasing to 24000 in the late evening
                    and overnight.
Visibility (SM).....7.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........25     13     7      4      6      5
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............56     49     42     39     35     32
Dewpoint........28     27     27     26     27     26
RH..............34     42     53     60     71     79
20 ft wind......NW 14  NW 13  NW 11  NW 10  NW 10  NW 9
20 ft wind gust.20     19     17     16     14     14
Mix hgt (ft)....4600   3500   3100   2600   2000   800
Transport wind..NW 25  NW 23  NW 22  NW 23  NW 23  N 20
LVORI...........1      1      2      1      3      4
ADI.............75     31     29     31     31     13
VRate kt-ft/1000102    70     59     50     41     14
Ceiling (hft)...190    230    240    250    240    240
Visibility (sm).7      7      7      7      7      7

.FRIDAY...

Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 64.
Min humidity........25 percent.
Wind (20 ft)........Northwest winds 6 to 10 mph.
Mixing height.......700-2100 ft AGL increasing to 4800-6100 ft AGL.
Transport winds.....North 8 to 15 mph.
Smoke dispersal.....Poor to good (8700-41500 knot-ft).
LVORI...............3.
ADI.................21 increasing to 41 in the late morning and
                    afternoon.
Pcpn amount.........0.00 inches.
Ceiling (FT)........24000.
Visibility (SM).....7.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4   3   3   2   1   0   0   0   0   0   0   0
Weather cov.....
Weather type....
Tstm cov........
Temp............31  31  35  41  47  52  55  59  61  62  63  62
Dewpoint........26  26  26  25  25  23  23  23  26  26  27  27
RH..............82  81  71  55  42  33  29  28  26  25  25  26
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..9   7   6   6   6   6   6   6   6   6   6   6
20 FT wind gust.14  11  10  10  8   8   10  10  7   8   8   10
Mix hgt (kft)...0.7 1.1 1.5 2.1 2.8 3.4 3.9 4.4 4.8 5.2 5.6 6.1
Transp wind dir.N   N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.15  14  13  13  14  14  13  10  8   8   8   8
LVORI...........4   3   3   1   1   1   1   1   1   1   1   1
ADI.............10  18  24  32  42  48  47  40  33  34  35  36
VRate kt-ft/10009   13  16  24  33  42  42  38  34  34  37  41
Ceiling (hft)...240 250 240 250 250 250 250 250 250 250 250 250
Visibility (sm).7   7   7   7   7   7   7   7   7   7   7   7

$$
Forecaster...Pat Moore
Requested by...Ryan Peacock
Type of request...PRESCRIBED
.TAG 1807095.0/GSP
.DELDT 04/19/18


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