137
FNUS72 KCHS 230659
FWSCHS
SPOT FORECAST FOR FMNF 148...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
259 AM EDT MON MAR 23 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MARCH 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WEST-SOUTHWEST WINDS SHOULD DEVELOP GUSTS AROUND 20 MPH ONCE THE
BOUNDARY LAYER INVERSION BREAKS DOWN THIS MORNING. GUSTY WINDS
SHOULD CONTINUE UNTIL LATE THIS AFTERNOON. IN ADDITION, AS
TEMPERATURES WARM INTO THE UPPER 80S THIS AFTERNOON, RELATIVE
HUMIDITY VALUES SHOULD FALL TO AROUND 45 PERCENT. A BAND OF
SCATTERED SHOWERS AND THUNDERSTORMS SHOULD ACCOMPANY A COLD FRONT
ACROSS THE FRANCIS MARION NATIONAL FOREST AFTER 5 PM, REMAINING INTO
EARLY THIS EVENING. IN THE WAKE OF THE FRONT, WINDS WILL SHIFT FROM
THE NORTH, WITH GUSTS TO AROUND 20 MPH REDEVELOPING LATE THIS
EVENING. GIVEN THE GUSTY NORTH WINDS, THERE IS NO RISK OF FOG ACROSS
THE BURN SITE TONIGHT. DRY HIGH PRESSURE IS FORECAST TO BUILD OVER
THE REGION ON TUESDAY. NORTHEAST WINDS OF 5 TO 10 MPH SHOULD
ADVECT DEWPOINTS IN THE 30S ACROSS THE BURN SITE ON TUESDAY. AS A
RESULT, RELATIVE HUMIDITY VALUES ARE FORECAST TO DROP INTO THE
MID-30S TUESDAY AFTERNOON.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........45 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 20
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......MAX 4700 FT AGL.
TRANSPORT WINDS.....WEST 16 TO 18 MPH.
MAX ADI.............93.
INVERSION END.......0800
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........7 2 8 7 7 10 18 38 37
WEATHER TYPE.... RW
TSTM COV........ SCH
CHC OF PCPN (%).0 0 0 0 0 0 10 10 20
TEMP............67 72 76 80 83 84 85 85 83
RH..............73 66 58 52 47 48 46 46 49
20 FT WIND DIR..W W W W W W W W W
20 FT WIND SPD..6 6 7 9 10 10 8 8 7
20 FT WIND GUST.16 18 18 19 20 18 18 17 14
MIX HGT (KFT)...1.4 1.9 2.4 2.8 3.3 4.0 4.6 4.7 3.5
TRANSP WIND DIR.W W W W W W W W W
TRANSP WIND SPD.16 16 16 18 18 18 16 16 16
LVORI...........3 1 1 1 1 1 1 1 1
ADI.............25 42 59 68 75 82 93 88 63
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
CHANCE OF PCPN......30 PERCENT.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........68 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 5 MPH EARLY IN THE
EVENING, THEN BECOMING NORTHEAST
5 TO 9 MPH WITH GUSTS TO AROUND 20 MPH IN THE
LATE EVENING AND OVERNIGHT. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
MAX LVORI...........3.
MIN ADI.............1.
INVERSION BEGIN.....1900
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........65 84 70 42 38 46
WEATHER TYPE....RNSHWR NONE NONE NONE NONE NONE
TSTM COV........S CHC
CHC OF PCPN (%).20 10 0 0 0 0
TEMP............81 73 67 62 57 54
RH..............53 68 61 50 49 54
20 FT WIND......NW 5 N 3 N 5 N 6 NE 8 NE 9
20 FT WIND GUST.13 11 14 18 18 18
MIX HGT (FT)....2300 600 1100 700 900 1000
TRANSPORT WIND..NW 6 NW 6 N 12 NE 10 NE 10 NE 14
LVORI...........2 3 3 2 2 2
ADI.............1 2 9 5 5 12
TUESDAY
SKY/WEATHER.........PARTLY SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 61.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 8 TO 10 MPH WITH GUSTS TO AROUND
23 MPH.
MIXING HEIGHT.......MAX 3600 FT AGL.
TRANSPORT WINDS.....NORTHEAST 16 TO 22 MPH.
MAX ADI.............67.
INVERSION END.......0400
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........64 60 73 59 53 46 47 49 50 53 57 60
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............51 50 49 50 52 55 57 59 59 60 60 59
RH..............61 58 58 61 56 47 42 38 37 37 41 44
20 FT WIND DIR..NE NE NE NE NE NE NE NE NE NE E E
20 FT WIND SPD..9 9 9 9 9 10 10 9 9 8 8 8
20 FT WIND GUST.22 22 22 23 22 22 22 20 18 18 18 18
MIX HGT (KFT)...1.5 1.4 1.6 2.6 2.8 2.8 3.1 3.3 3.6 3.4 3.3 3.2
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE NE NE NE
TRANSP WIND SPD.20 20 20 22 22 22 18 18 18 16 16 16
LVORI...........1 1 1 1 1 1 1 1 1 1 1 1
ADI.............35 38 48 67 67 64 64 62 61 56 55 53
FORECASTER...DIXON
REQUESTED BY...SAM SULSER
TYPE OF REQUEST...PRESCRIBED
.TAG 2607138.0/CHS
.DELDT 03/23/26
.FORMATTERVERSION 2.0.0
.EMAIL KELLY.WETZELWILSON@USDA.GOV,SAMUEL.SULSER@USDA.GOV
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