196
FNUS72 KCHS 211115
FWSCHS

Spot Forecast for Combahee C3...US Fish & Wildlife Service
National Weather Service Charleston SC
715 AM EDT Fri Mar 21 2025

Forecast is based on ignition time of 0900 EDT on March 21.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
High pressure will prevail across the region today. Winds will be
strongest this morning out of the northwest, then steadily decrease
through the afternoon and turn more westerly. By the early evening,
light southwesterly flow is expected. Conditions will be dry today,
with relative humidity values dropping into the 20 to 25 percent
range. Fortunately, the strongest winds this morning will not
coincide with the lowest relative humidity values this afternoon.
Quiet and dry conditions will continue through the weekend.

Fog potential for tonight: Low.

.REST OF TODAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....Around 66.
Min humidity........22 percent.
Wind (20 ft)........Northwest winds 6 to 9 mph.
Mixing Height.......Max 4400 ft AGL.
Transport winds.....Northwest 8 to 16 mph.
Max ADI.............55.
Inversion End.......0900.

TIME (EDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........0   0   0   0   0   0   0   0   0
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0
Temp............45  49  52  56  59  61  64  65  66
RH..............55  48  43  35  30  27  25  24  22
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  W   W
20 FT wind spd..6   8   9   8   7   6   6   6   6
20 FT wind gust.11  11  11  11  9   9   9   7   7
Mix hgt (kft)...1.6 2.8 3.4 3.5 3.8 4.0 4.3 4.4 4.4
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.16  16  16  12  12  12  8   8   8
LVORI...........2   1   1   1   1   1   1   1   1
ADI.............29  49  55  52  53  44  41  36  36

.TONIGHT...

Sky/weather.........Clear.
Chance of pcpn......0 percent.
Min temperature.....Around 41.
Max humidity........76 percent.
Wind (20 ft)........West winds around 5 mph early in the evening
                    becoming light.
Max LVORI...........3.
Min ADI.............1.
Inversion Begin.....1830.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........0   0   0   0   0   0   1   1   1   1   2   2
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............65  61  55  52  50  48  47  47  45  44  43  43
RH..............23  27  37  46  56  68  71  71  73  73  76  73
20 FT wind dir..W   SW  SW  SW  SW  S   SW  SW  SW  SW  SW  SW
20 FT wind spd..5   4   3   2   2   3   3   3   3   3   3   3
20 FT wind gust.        4   4   4   4   4   4   4   4   4   4
Mix hgt (kft)...3.9 0.6 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.4   4   4   4   4   4   4   4   4   4   4   4
LVORI...........2   2   2   2   3   3   3   3   3   3   3   3
ADI.............1   2   2   2   2   2   2   2   2   2   2   2

.SATURDAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....Around 73.
Min humidity........27 percent.
Wind (20 ft)........Light winds becoming west 5 to 9 mph in the
                    late morning and afternoon.
Mixing Height.......Max 6500 ft AGL.
Transport winds.....Light winds becoming west 12 to 20 mph in the
                    late morning and afternoon.
Max ADI.............89.
Inversion End.......1000.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   3   1   1   1   1   1   1   1   1   1   1
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............42  41  42  47  55  61  64  68  71  72  73  73
RH..............73  76  70  60  49  41  37  31  27  27  27  28
20 FT wind dir..SW  SW  SW  SW  W   W   W   W   W   W   W   W
20 FT wind spd..3   3   4   5   6   7   7   8   8   9   9   9
20 FT wind gust.4   4   9   11  13  13  14  13  16  16  16  16
Mix hgt (kft)...0.4 0.4 0.4 0.9 1.8 2.9 4.1 4.9 5.7 5.9 6.2 6.5
Transp wind dir.SW  SW  SW  W   W   W   W   W   W   W   W   W
Transp wind spd.4   4   4   12  12  12  18  18  18  20  20  20
LVORI...........3   3   3   3   1   1   1   1   1   1   1   1
ADI.............4   5   5   7   31  58  85  75  80  87  89  85

$$

Forecaster...Holloway
Requested by...Adam McCullough
Type of request...PRESCRIBED
.TAG 2507322.0/CHS
.DELDT 03/21/25
.FormatterVersion 2.0.0
.EMAIL adam_mccullough@fws.gov