227
FNUS72 KCHS 211825
FWSCHS
SPOT FORECAST FOR MAIN ROAD FIRE...WILDLAND FIRE SERVICE
NATIONAL WEATHER SERVICE CHARLESTON SC
225 PM EDT FRI AUG 21 2026
FORECAST IS BASED ON FORECAST START TIME OF 1500 EDT ON AUGUST 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE SEA BREEZE HAS MOVED INLAND OF THE BURN SITE AS OF 3 PM,
YIELDING SE WINDS 10 TO 15 MPH. ISOLATED SHOWERS AND THUNDERSTORMS
ARE POSSIBLE THIS AFTERNOON, WITH THE BEST CHANCE FOR
PRECIPITATION LATER THIS AFTERNOON FROM AROUND 5 TO 9 PM. WINDS
OVERNIGHT WILL SHIFT TO THE SW WITH SPEEDS AROUND 10 MPH. THE SEA
BREEZE WILL AGAIN PUSH INLAND OF THE BURN SITE ON SATURDAY AT
NOON/1 PM. ISOLATED TO SCATTERED SHOWERS/THUNDERSTORMS ARE
FORECAST SATURDAY AFTERNOON.
REST OF TODAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........68 PERCENT.
WIND (20 FT)........SOUTH WINDS 11 TO 13 MPH.
MIXING HEIGHT.......MAX 1800 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 16 MPH.
MAX ADI.............36.
TIME (EDT) 3PM 4PM 5PM
SKY (%).........14 16 23
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10
TEMP............89 89 88
RH..............68 68 70
20 FT WIND DIR..S S S
20 FT WIND SPD..11 12 13
20 FT WIND GUST.14 16 18
MIX HGT (KFT)...1.8 1.8 1.5
TRANSP WIND DIR.S S S
TRANSP WIND SPD.16 16 16
LVORI...........3 3 3
ADI.............31 36 34
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY
CLOUDY THEN BECOMING PARTLY CLOUDY. CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT.
CHANCE OF PCPN......40 PERCENT.
MIN TEMPERATURE.....AROUND 77.
MAX HUMIDITY........94 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 13 MPH SHIFTING TO THE
SOUTHWEST 6 TO 7 MPH AFTER 3 AM. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
IN THE EVENING. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
MORNING.
MAX LVORI...........6.
MIN ADI.............1.
INVERSION BEGIN.....2000.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........29 39 52 50 51 59 60 63 65 59 53 45
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH CHC CHC CHC CHC CHC CHC SCH
CHC OF PCPN (%).10 10 20 20 20 30 40 30 40 40 30 30
TEMP............86 84 82 81 81 81 81 80 80 79 78 78
RH..............75 80 85 88 88 88 88 88 88 91 91 91
20 FT WIND DIR..S S S S S SW SW SW SW SW SW SW
20 FT WIND SPD..13 13 12 12 11 10 9 8 7 7 7 6
20 FT WIND GUST.18 18 18 18 16 16 16 13 13 13 13 13
MIX HGT (KFT)...1.5 1.5 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
TRANSP WIND DIR.S S S S S S SW SW SW SW SW SW
TRANSP WIND SPD.18 18 18 12 12 12 10 10 10 10 10 10
LVORI...........4 3 4 5 5 5 5 5 5 5 5 6
ADI.............1 21 13 12 11 10 9 8 8 8 8 6
SATURDAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE MORNING.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
EARLY IN THE AFTERNOON, THEN CHANCE OF SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........72 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 10 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......MAX 2600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 14 MPH.
MAX ADI.............33.
INVERSION END.......0900.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........50 54 59 56 57 66 65 64 58 58 72 84
WEATHER TYPE....RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).30 30 10 10 10 10 10 20 40 40 50 50
TEMP............77 77 78 79 82 84 86 87 88 88 88 86
RH..............94 94 94 91 85 82 77 75 72 75 75 77
20 FT WIND DIR..SW SW SW SW W SW SW SW SW SW S S
20 FT WIND SPD..6 6 6 6 6 6 6 6 7 8 9 10
20 FT WIND GUST.13 11 11 11 11 11 9 11 11 13 14 14
MIX HGT (KFT)...0.8 0.8 0.8 1.3 1.7 2.1 2.5 2.6 2.4 2.1 1.6 1.4
TRANSP WIND DIR.SW SW SW W W W SW SW SW SW SW SW
TRANSP WIND SPD.8 8 8 10 10 10 10 10 10 14 14 14
LVORI...........6 6 6 4 4 3 3 3 3 3 3 3
ADI.............8 8 8 18 23 28 33 30 33 32 31 26
FORECASTER...MASKELL
REQUESTED BY...REAM THOMAS
TYPE OF REQUEST...WILDFIRE
.TAG 2620180.0/CHS
.DELDT 08/21/26
.FORMATTERVERSION 2.0.0
.EMAIL REAM_THOMAS@FWS.GOV
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