715
FNUS72 KCHS 121830
FWSCHS
SPOT FORECAST FOR C36 SILVICULTURE PLANNING SC-FMF...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
230 PM EDT TUE MAY 12 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON MAY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE FRANCIS MARION NATIONAL FOREST WILL REMAIN BETWEEN HIGH PRESSURE
TO THE NORTH AND A BROAD AREA OF LOW PRESSURE OVER FLORIDA TONIGHT
THROUGH WEDNESDAY. DRIER AIR AND LIGHT NORTHEAST WINDS ACROSS THE
FOREST SHOULD PREVENT FOG FORMATION TONIGHT.
WEDNESDAY AFTERNOON SHOULD BE RAIN FREE ACROSS OUR AREA. A COLD
FRONT WILL MOVE THROUGH THURSDAY MORNING, FOLLOWED BY CRITICAL
RH VALUES THURSDAY AFTERNOON. HOWEVER, WINDS WON'T BE STRONG
THURSDAY AFTERNOON.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........52 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......MAX 5800 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTHEAST AROUND 6 MPH IN
THE LATE MORNING AND EARLY AFTERNOON, THEN
SHIFTING TO THE NORTH LATE IN THE AFTERNOON.
MAX ADI.............40.
INVERSION END.......0900
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........38 36 33 33 36 43 38 38 37 33
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 0 0
TEMP............60 66 71 74 76 78 79 79 80 79
RH..............90 84 73 69 62 56 54 54 52 54
20 FT WIND DIR..NE E E E E E E E E SE
20 FT WIND SPD..1 1 1 1 1 1 2 2 2 2
20 FT WIND GUST.5 5 7 5 7 5 7 9 7 7
MIX HGT (KFT)...0.6 1.8 3.4 4.4 5.0 5.4 5.6 5.8 5.6 5.2
TRANSP WIND DIR.NE E E E NE NE NE N N N
TRANSP WIND SPD.2 6 6 6 6 6 7 7 6 6
LVORI...........7 4 3 3 1 1 1 1 1 1
ADI.............1 16 30 38 36 39 32 33 40 37
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AFTER 3
AM.
CHANCE OF PCPN......20 PERCENT.
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MAX LVORI...........9.
MIN ADI.............1.
INVERSION BEGIN.....2000
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........30 17 25 10 20 18
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 10 10
TEMP............78 71 66 64 63 62
RH..............58 76 90 93 97 97
20 FT WIND......SE 1 SE 1 N 0 N 0 N 0 SW 1
20 FT WIND GUST.7 7 5 5 5 9
MIX HGT (FT)....3900 300 200 400 300 300
TRANSPORT WIND..S 4 S 4 S 0 N 0 N 0 SW 2
LVORI...........3 4 7 8 9 9
ADI.............1 1 1 1 1 1
THURSDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST AROUND 5 MPH
WITH GUSTS TO AROUND 14 MPH LATE IN THE
AFTERNOON, THEN BECOMING LIGHT LATE IN THE
AFTERNOON.
MIXING HEIGHT.......MAX 8000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 14 MPH INCREASING TO AROUND 16
MPH IN THE AFTERNOON.
MAX ADI.............133.
INVERSION END.......0800
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........7 0 3 3
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0
TEMP............60 66 76 80
RH..............100 84 52 38
20 FT WIND......W 2G9 NW 4G13 NW 4G13 NW 5G13
MIX HGT (FT)....400 2400 4700 7600
TRANSPORT WIND..NW 6 N 14 NW 16 NW 16
LVORI...........10 4 1 1
ADI.............2 46 82 129
FORECASTER...DIXON
REQUESTED BY...WILL MCCANN
TYPE OF REQUEST...PRESCRIBED
.TAG 2613445.0/CHS
.DELDT 05/12/26
.FORMATTERVERSION 2.0.0
.EMAIL KELLY.WETZELWILSON@USDA.GOV,WILLIAM.MCCANN@USDA.GOV
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