633
FNUS72 KCHS 120823
FWSCHS
SPOT FORECAST FOR C16 SITE PREP...USFS
NATIONAL WEATHER SERVICE CHARLESTON SC
423 AM EDT TUE MAY 12 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON MAY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY CONDITIONS ARE EXPECTED AT THE BURN SITE TODAY AND TONIGHT AS
HIGH PRESSURE PASSES NORTH OF THE AREA. MINIMUM RH VALUES COULD
DROP AS LOW AS 35%. NORTHEAST WINDS WILL PEAK THIS AFTERNOON
AROUND 5-10 MPH WITH OCCASIONAL GUSTS UP TO 15 MPH. LIMITED SEA
BREEZE DEVELOPMENT IS EXPECTED THIS AFTERNOON, WITH PREVAILING
NORTHEAST FLOW IN PLACE.
WEDNESDAY AFTERNOON IS EXPECTED TO REMAIN DRY ACROSS THE AREA. A
COLD FRONT WILL MOVE THROUGH THURSDAY MORNING, FOLLOWED BY
CRITICALLY LOW RH VALUES THURSDAY AFTERNOON. HOWEVER, WINDS ARE
NOT EXPECTED TO BE ELEVATED THURSDAY.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST AROUND 5 MPH WITH
GUSTS TO AROUND 14 MPH IN THE AFTERNOON.
MIXING HEIGHT.......MAX 4700 FT AGL.
TRANSPORT WINDS.....EAST 14 TO 18 MPH.
MAX ADI.............95.
INVERSION END.......0800
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........73 74 81 76 79 73 66 65 60 57
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0
TEMP............57 60 64 67 69 70 71 72 72 72
RH..............75 64 56 49 44 42 39 39 39 42
20 FT WIND DIR..NE NE NE NE E E E E E E
20 FT WIND SPD..3 4 4 4 5 5 5 5 5 5
20 FT WIND GUST.13 13 13 13 14 14 14 14 14 13
MIX HGT (KFT)...1.3 1.7 2.0 2.5 3.4 4.0 4.6 4.7 4.6 3.9
TRANSP WIND DIR.NE NE NE NE E E E E E E
TRANSP WIND SPD.14 18 18 18 18 18 18 16 16 16
LVORI...........3 1 1 1 1 1 1 1 1 1
ADI.............23 35 44 59 76 82 87 95 93 75
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MAX LVORI...........8.
MIN ADI.............1.
INVERSION BEGIN.....2000
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........65 88 63 73 59 32
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
TEMP............71 66 61 59 58 57
RH..............46 61 75 83 90 93
20 FT WIND......E 4 E 1 E 1 E 1 N 0 N 0
20 FT WIND GUST.13 9 9 7 5 5
MIX HGT (FT)....3300 700 500 400 400 400
TRANSPORT WIND..E 10 E 10 E 2 E 0 E 0 N 0
LVORI...........2 3 4 6 7 8
ADI.............1 1 1 1 1 1
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......MAX 6500 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHEAST 6 TO 8 MPH IN
THE LATE MORNING AND EARLY AFTERNOON, THEN
SHIFTING TO THE SOUTH AROUND 6 MPH LATE IN THE
AFTERNOON.
MAX ADI.............53.
INVERSION END.......0900
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........20 12 23 43
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0
TEMP............58 67 80 82
RH..............90 81 56 51
20 FT WIND......N 0G5 E 1G5 E 1G5 SE 2G9
MIX HGT (FT)....400 2300 4900 6500
TRANSPORT WIND..NE 0 E 8 SE 6 S 6
LVORI...........7 3 1 1
ADI.............1 20 42 45
FORECASTER...SCHALLER
REQUESTED BY...BEN KUHN
TYPE OF REQUEST...PRESCRIBED
.TAG 2613384.0/CHS
.DELDT 05/12/26
.FORMATTERVERSION 2.0.0
.EMAIL BENJAMIN.KUHN@USDA.GOV,WILLIAM.MCCANN@USDA.GOV,KELLY.WETZELWILSON@USDA.GOV
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