824
FNUS72 KCHS 211839
FWSCHS
SPOT FORECAST FOR FMF COMPARTMENT 186 PLANNING...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
239 PM EDT SAT MAR 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HIGH PRESSURE WILL DOMINATE OVER THE BURN SITE ON SUNDAY, YIELDING A
WSW/SW WIND THROUGH THE EARLY AFTERNOON. A SEA BREEZE IS FORECAST
TO PUSH ACROSS THE BURN SITE AROUND 3 PM, SHIFTING THE WIND TO THE
S/SSW. WIND GUSTS COULD REACH AS HIGH AS 20 MPH IN THE LATE AFTERNOON
AFTER THE SEA BREEZE PUSHES INLAND OF THE BURN SITE. IT IS POSSIBLE
THAT RH VALUES COULD DROP AS LOW AS 35% FOR A SHORT DURATION SUNDAY
AFTERNOON PRIOR TO THE SEA BREEZE ARRIVAL. THE THREAT OF FOG SUNDAY
NIGHT INTO MONDAY MORNING IS VERY LOW.
SUNDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 8 MPH LATE
IN THE MORNING, THEN INCREASING TO AROUND 8 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......MAX 4200 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST AROUND 18 MPH.
MAX ADI.............73.
INVERSION END.......1000.
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........4 5 2 1 1 0 0 1 3 1 2
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0
TEMP............60 60 64 71 76 80 83 85 85 84 84
RH..............84 84 78 66 56 51 46 43 43 43 43
20 FT WIND DIR..W W W W W W SW SW SW SW SW
20 FT WIND SPD..2 2 2 3 5 6 6 7 8 8 8
20 FT WIND GUST.9 9 11 11 11 13 13 14 14 16 16
MIX HGT (KFT)...0.4 0.5 0.7 1.1 1.5 2.3 3.2 4.1 4.2 3.9 3.0
TRANSP WIND DIR.W W W W W W W W SW SW SW
TRANSP WIND SPD.2 2 8 8 8 14 14 14 18 18 18
LVORI...........5 5 4 3 2 1 1 1 1 1 1
ADI.............2 4 4 12 22 36 54 73 66 63 56
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 63.
MAX HUMIDITY........70 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH WITH GUSTS TO AROUND
16 MPH IN THE EVENING BECOMING LIGHT.
MAX LVORI...........3.
MIN ADI.............1.
INVERSION BEGIN.....1900.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........4 5 11 12 17 10
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............80 74 67 66 66 65
RH..............49 57 68 70 70 70
20 FT WIND......SW 7 SW 6 SW 5 SW 4 SW 3 SW 4
20 FT WIND GUST.16 14 14 13 13 13
MIX HGT (FT)....2100 700 700 700 800 800
TRANSPORT WIND..SW 10 SW 10 SW 6 SW 4 SW 4 SW 6
LVORI...........2 3 3 3 3 3
ADI.............1 3 3 3 2 3
MONDAY
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY SUNNY. SLIGHT CHANCE
OF SHOWERS LATE IN THE AFTERNOON. SLIGHT CHANCE
OF THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........45 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 6 MPH WITH GUSTS
TO AROUND 16 MPH EARLY IN THE MORNING, THEN
BECOMING LIGHT LATE IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE AFTERNOON.
MIXING HEIGHT.......MAX 3900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 6 MPH SHIFTING TO THE WEST 14
TO 16 MPH IN THE LATE MORNING AND AFTERNOON.
MAX ADI.............65.
INVERSION END.......0900.
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........8 8 8 33
WEATHER TYPE....NONE NONE NONE RNSHWR
TSTM COV........
CHC OF PCPN (%).0 0 0 20
TEMP............64 67 80 85
RH..............70 65 51 45
20 FT WIND......SW 4G14 W 5G16 W 6G16 W 5G13
MIX HGT (FT)....800 1400 2700 3500
TRANSPORT WIND..SW 6 W 16 W 16 W 14
LVORI...........3 3 1 1
ADI.............6 26 61 63
FORECASTER...MASKELL
REQUESTED BY...SAM SULSER
TYPE OF REQUEST...PRESCRIBED
.TAG 2606958.0/CHS
.DELDT 03/21/26
.FORMATTERVERSION 2.0.0
.EMAIL SAMUEL.SULSER@USDA.GOV
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