740
FNUS72 KGSP 110823
FWSGSP
SPOT FORECAST FOR JACK BRANCH FIRE...USFS
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
423 AM EDT SAT APR 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 EDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS ARE GENERALLY LIGHT OUT OF THE SOUTHWEST AND WILL TURN
NORTHWEST LATE THIS MORNING AS A WEAK COLD FRONT PASSES BY.
MINIMUM RELATIVE HUMIDITY VALUES NEAR 35% THIS AFTERNOON. WINDS
PICK UP TO 5-10 MPH ON SUNDAY OUT OF THE SOUTHWEST WITH MINIMUM
RELATIVE HUMIDITY VALUES A FEW TICKS ABOVE 25% BY THE AFTERNOON.
MOSTLY DRY CONDITIONS EXPECTED THROUGH SUNDAY WITH MID TO UPPER
LEVEL CLOUDS PRESENT.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH IN
THE AFTERNOON, THEN BECOMING LIGHT LATE IN THE
AFTERNOON.
MIXING HEIGHT.......6100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5 TO 7 MPH SHIFTING TO THE NORTHWEST
6 TO 10 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (1496 MPH-FT) EARLY IN THE MORNING
INCREASING TO GOOD (53055 MPH-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................3 EARLY IN THE MORNING INCREASING TO 66 IN THE
AFTERNOON.
STABILITY CLASS.....4.
PCPN AMOUNT.........0.00 INCHES.
CEILING (FT)........21600 DECREASING TO 16800 IN THE AFTERNOON.
VISIBILITY (SM).....9.
SFC PRESSURE (IN)...28.01.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 16 9 15 23 29 25 20 13 9 12 13
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF THDR (%).0 0 0 0 0 0 0 0 10 10 10 10
TEMP............52 51 52 56 62 66 69 73 73 74 75 74
DEWPOINT........36 37 38 40 41 43 44 45 45 46 46 47
RH..............53 58 58 55 46 42 40 37 36 37 36 37
20 FT WIND DIR..S S E W W NW NW NW NW NW NW NW
20 FT WIND SPD..2 2 2 2 2 3 5 5 6 5 5 3
20 FT WIND GUST.7 7 7 8 8 10 12 13 13 13 13 10
MIX HGT (KFT)...0.3 0.3 0.3 0.7 1.5 3.4 4.4 5.1 5.7 6.1 6.1 5.7
TRANSP WIND DIR.SW SW SW W NW NW NW NW NW NW NW NW
TRANSP WIND SPD.7 6 5 5 6 9 10 10 9 8 8 8
LVORI...........2 3 3 3 2 1 1 1 1 1 1 1
ADI.............3 6 4 4 11 40 57 66 65 60 60 57
VRATE MPH-FT/1K.2 2 1 3 9 31 45 53 52 49 49 46
CEILING (HFT)...248 246 245 246 238 228 216 192 174 168 193 171
VISIBILITY (SM).9 9 9 9 9 9 9 9 9 9 9 9
SFC PRES (IN)...803 805 806 807 808 808 807 806 805 803 802 801
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........74 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
EARLY IN THE MORNING.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 8 MPH SHIFTING TO THE EAST 5 TO 6
MPH LATE IN THE EVENING, THEN SHIFTING TO THE
SOUTHEAST 6 TO 12 MPH OVERNIGHT.
SMOKE DISPERSAL.....GOOD (39359 MPH-FT) EARLY IN THE EVENING
DECREASING TO POOR (1496 MPH-FT) LATE IN THE
NIGHT.
LVORI...............2.
ADI.................49 EARLY IN THE EVENING DECREASING TO 2 LATE IN
THE NIGHT.
STABILITY CLASS.....4.
PCPN AMOUNT.........0.00 INCHES.
CEILING (FT)........19100 INCREASING TO 22400 EARLY IN THE EVENING,
THEN DECREASING TO 17200 OVERNIGHT.
VISIBILITY (SM).....9.
SFC PRESSURE (IN)...28.01.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........16 17 15 13 19 29 17 9 14 14 20 11
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF THDR (%).10 10 0 0 0 0 0 0 0 0 0 0
TEMP............74 72 67 65 63 61 61 59 59 58 57 57
DEWPOINT........47 47 48 50 50 50 49 49 48 49 48 48
RH..............39 41 50 56 62 65 65 69 69 72 72 72
20 FT WIND DIR..N N N NE E E SE SE SE SE SE SE
20 FT WIND SPD..2 2 1 1 2 2 2 2 2 2 3 5
20 FT WIND GUST.9 8 6 6 6 6 7 7 7 8 9 10
MIX HGT (KFT)...4.9 2.2 0.4 0.5 0.5 0.3 0.3 0.3 0.3 0.3 0.3 0.3
TRANSP WIND DIR.NW N N N E E SE SE SE SE SE SE
TRANSP WIND SPD.8 7 5 5 5 6 6 6 7 10 10 12
LVORI...........1 2 2 3 3 3 3 3 3 3 3 3
ADI.............49 3 2 2 2 3 3 3 3 5 5 5
VRATE MPH-FT/1K.39 15 2 2 2 1 1 2 2 3 3 4
CEILING (HFT)...191 236 246 250 250 250 224 198 172 177 181 186
VISIBILITY (SM).9 9 9 9 9 9 9 9 9 9 9 9
SFC PRES (IN)...801 802 803 804 805 805 805 804 803 803 803 803
SUNDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT).
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........27 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH.
MIXING HEIGHT.......8200 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 15 MPH SHIFTING TO THE SOUTHWEST 10
TO 13 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (4028 MPH-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (104383 MPH-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................6 EARLY IN THE MORNING INCREASING TO 121 IN THE
AFTERNOON.
STABILITY CLASS.....3.
PCPN AMOUNT.........0.00 INCHES.
CEILING (FT)........17000 INCREASING TO 30000 LATE IN THE MORNING.
VISIBILITY (SM).....9 EARLY IN THE MORNING.
SFC PRESSURE (IN)...27.99.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 28 6 3 10 16 26 37 47 44 42 39
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............57 56 57 59 65 72 76 78 79 80 80 79
DEWPOINT........47 47 47 47 47 47 46 45 44 44 44 44
RH..............70 74 70 64 52 40 34 30 28 27 28 29
20 FT WIND DIR..SE SE SE SE S S S S S S S S
20 FT WIND SPD..5 5 6 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.12 12 13 13 14 14 15 15 16 16 16 16
MIX HGT (KFT)...0.3 0.3 0.4 1.2 1.9 2.9 4.7 6.5 8.2 7.6 7.0 6.4
TRANSP WIND DIR.SE SE SE SE S S S S SW SW SW SW
TRANSP WIND SPD.13 14 15 14 14 14 14 13 13 12 10 10
LVORI...........3 3 3 2 1 1 1 1 1 1 1 1
ADI.............6 13 15 21 34 52 81 99 121 104 87 81
VRATE MPH-FT/1K.4 5 6 17 26 40 65 82 104 88 73 67
CEILING (HFT)...181 175 170 170 170 300 300 300 300 300 300 300
VISIBILITY (SM).9 9 9
SFC PRES (IN)...804 806 807 808 809 809 808 806 804 802 800 799
FORECASTER...CAC
REQUESTED BY...AARON HAYES
TYPE OF REQUEST...WILDFIRE
.TAG 2610041.0/GSP
.DELDT 04/11/26
.FORMATTERVERSION 2.0.0
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page