596
FNUS72 KCHS 281835
FWSCHS
SPOT FORECAST FOR FMF C73 PLANNING...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
235 PM EDT THU MAY 28 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MAY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MAINLY DRY CONDITIONS EXPECTED AT THE BURN SITE ON FRIDAY AS A COLD
FRONT, WHICH WILL CROSS THE BURN SITE AROUND SUNRISE, PUSHES SOUTH
AND DRIER AIR FILLS IN FROM THE NORTH AND EAST THROUGH THE DAY. THERE
IS UNCERTAINTY WITH HOW FAR SOUTH THE FRONT MOVES, AND HOW LOW RH VALUES
GET FRIDAY AFTERNOON, BUT THE CURRENT EXPECTATION IS FOR RH VALUES TO
DIP TO NEAR 50% IN THE AFTERNOON. A WELL-DEFINED SEA BREEZE IS NOT
EXPECTED WITH E WINDS PREVAILING THROUGH MOST OF THE DAY. DISPERSION
COULD BE LOW TO MODERATE EARLY IN THE MORNING, BUT IS EXPECTED TO
BECOME HIGH AFTER SUNRISE THROUGH THE DAY.
SHOWER AND STORM CHANCES RETURN TO THE BURN SITE EARLY SATURDAY
MORNING.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST AROUND 5 MPH WITH
GUSTS TO AROUND 14 MPH IN THE LATE MORNING AND
EARLY AFTERNOON, THEN BECOMING LIGHT LATE IN
THE AFTERNOON.
MIXING HEIGHT.......MAX 5100 FT AGL.
TRANSPORT WINDS.....EAST 14 TO 16 MPH.
MAX ADI.............82.
INVERSION END.......0900
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........51 42 51 62 48 57 54 55 76
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10
TEMP............74 78 81 84 85 85 86 85 84
RH..............87 79 69 61 57 55 51 55 57
20 FT WIND DIR..E E E E E E E SE SE
20 FT WIND SPD..4 5 5 5 5 5 5 4 4
20 FT WIND GUST.13 13 13 13 14 13 13 13 13
MIX HGT (KFT)...2.4 3.0 3.6 4.2 4.7 5.0 5.1 4.8 4.3
TRANSP WIND DIR.E E E E E E SE SE SE
TRANSP WIND SPD.16 16 16 14 14 14 14 14 14
LVORI...........4 3 1 1 1 1 1 1 1
ADI.............42 59 57 80 82 80 81 71 49
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS OVERNIGHT.
CHANCE OF PCPN......50 PERCENT.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........97 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS OVERNIGHT.
MAX LVORI...........7.
MIN ADI.............1.
INVERSION BEGIN.....2000
TIME (EDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........64 67 77 86
WEATHER TYPE....NONE NONE NONE RNSHWR
TSTM COV........ S CHC
CHC OF PCPN (%).0 0 0 50
TEMP............82 76 73 71
RH..............61 74 79 84
20 FT WIND......SE 4G13 SE 1G7 N 0G4 N 0G4
MIX HGT (FT)....3600 600 500 400
TRANSPORT WIND..SE 8 SE 0 N 0 N 0
LVORI...........3 4 4 6
ADI.............1 1 1 1
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND CHANCE OF
THUNDERSTORMS.
CHANCE OF PCPN......80 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........77 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE MORNING. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE MORNING.
MIXING HEIGHT.......MAX 2800 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST AROUND 6 MPH
EARLY IN THE AFTERNOON, THEN SHIFTING TO THE
SOUTH LATE IN THE AFTERNOON.
MAX ADI.............20.
INVERSION END.......1000
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........87 86 86 90
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR
TSTM COV........S CHC S CHC CHANCE CHANCE
CHC OF PCPN (%).50 80 80 80
TEMP............67 72 77 79
RH..............97 97 85 77
20 FT WIND......N 0G4 N 0G4 S 1G7 SE 2G9
MIX HGT (FT)....500 700 2100 2300
TRANSPORT WIND..N 0 SW 4 SW 6 S 6
LVORI...........9 9 4 3
ADI.............1 1 15 20
FORECASTER...BARNES
REQUESTED BY...KELLY WETZEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2614603.0/CHS
.DELDT 05/28/26
.FORMATTERVERSION 2.0.0
.EMAIL KELLY.WETZELWILSON@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page