370
FNUS72 KCHS 200847
FWSCHS
SPOT FORECAST FOR FMF C99...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
447 AM EDT TUE OCT 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
..NEAR CRITICAL RH THIS AFTERNOON
DRY HIGH PRESSURE WILL REMAIN ACROSS THE REGION TODAY. LIGHT NORTH
WINDS WILL INCREASE BY MID-MORNING, BUT WILL BE LIGHTER COMPARED
TO MONDAY. RH VALUES WILL DROP TO 25-30% THIS AFTERNOON AS EVEN DRIER
AIR FILTERS INTO THE AREA. WINDS WILL DROP OFF QUICKLY AFTER SUNSET
WITH VERY POOR DISPERSON OVERNIGHT. THERE IS NO POTENTIAL FOR FOG.
REST OF TODAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........28 PERCENT.
WIND (20 FT)........LIGHT WINDS, BECOMING NORTH 5 TO 7 MPH. GUSTS
NEAR 15 MPH POSSIBLE FORM LATE MORNING THROUGH
MID-AFTERNOON.
MIXING HEIGHT.......MAX 3200 FT AGL.
TRANSPORT WINDS.....NORTH 12 TO 16 MPH.
MAX ADI.............64.
INVERSION END.......0900.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........0 0 0 1 1 1 1 2 2
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
TEMP............46 55 61 64 67 71 73 74 73
RH..............83 59 51 46 42 35 30 28 30
20 FT WIND DIR..N N N N N N N N N
20 FT WIND SPD..4 5 6 6 6 6 6 5 4
20 FT WIND GUST. 16 16 16 16 16 16 14 13
MIX HGT (KFT)...0.8 1.2 1.6 2.2 2.7 3.1 3.2 3.2 2.6
TRANSP WIND DIR.N N N N N N N N N
TRANSP WIND SPD.12 12 12 16 16 16 14 14 14
LVORI...........5 2 1 1 1 1 1 1 1
ADI.............6 19 32 46 54 61 64 59 46
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MAX LVORI...........6.
MIN ADI.............1.
INVERSION BEGIN.....1930.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........1 3 3 5 13 25
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............68 60 56 53 50 49
RH..............40 51 59 66 71 80
20 FT WIND......N 4 N 3 N 1 N 1 N 1 N 2
20 FT WIND GUST.7 4 2 2 2
MIX HGT (FT)....1100 400 400 400 400 400
TRANSPORT WIND..N 6 N 6 N 2 N 2 N 2 N 2
LVORI...........2 2 3 4 4 6
ADI.............1 2 1 1 1 1
WEDNESDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS, BECOMING NORTH 5 TO 7 MPH.
GUSTS AS HIGH AS 15 MPH POSSIBLE.
MIXING HEIGHT.......MAX 4300 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTH 12 TO 14 MPH IN THE
LATE MORNING AND AFTERNOON.
MAX ADI.............70.
INVERSION END.......0900.
TIME (EDT) 6 AM 10 AM 2 PM
SKY (%).........42 20 10
WEATHER TYPE....NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0
TEMP............47 60 73
RH..............89 67 41
20 FT WIND......N 2 N 6G16 N 5G13
MIX HGT (FT)....400 1700 3500
TRANSPORT WIND..N 4 N 12 N 14
LVORI...........6 3 1
ADI.............4 28 59
FORECASTER...TAYLOR
REQUESTED BY...KELLY WETZEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2624012.0/CHS
.DELDT 10/20/26
.FORMATTERVERSION 2.0.0
.EMAIL KELLY.WETZELWILSON@USDA.GOV,CAMERON.PURKIS@USDA.GOV
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