586
FNUS72 KCHS 121226
FWSCHS

Spot Forecast for Impoundment 1 RX...U.S. Fish and Wildlife
National Weather Service Charleston SC
726 AM EST Wed Feb 12 2025

Forecast is based on ignition time of 0900 EST on February 12.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Dense fog this morning will likely linger through mid morning. A
warm front will eventually lift northward through the site by the
early afternoon which will allow temperatures to warm significantly.
Southerly winds will increase behind the front, with some gusts as
high as 15-20 mph possible. While there could again be some fog
around tonight, dense fog is not anticipated and southerly winds
will remain up through the night. A band of showers, and possibly
a thunderstorm, will move in to the area by the mid to late morning
hours on Thursday.

Fog potential for tonight: Moderate.

.REST OF TODAY...

Sky/weather.........Mostly cloudy then becoming mostly sunny.
                    Patchy fog late in the morning.
Chance of pcpn......0 percent.
Max temperature.....Around 76.
Min humidity........58 percent.
Wind (20 ft)........South winds 5 to 10 mph.
Mixing Height.......Max 3600 ft AGL.
Transport winds.....South 8 to 16 mph increasing to around 18 mph
                    late in the afternoon.
Max ADI.............65.
Inversion End.......1030.

TIME (EST)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........92  87  81  75  67  55  43  35  33
Weather type....FOG
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0
Temp............56  60  64  67  71  75  76  76  74
RH..............100 100 90  84  73  62  60  58  62
20 FT wind dir..S   S   S   S   S   S   S   S   S
20 FT wind spd..5   6   7   8   8   9   10  10  10
20 FT wind gust.    9   11  11  11  13  16  16  16
Mix hgt (kft)...0.7 1.2 1.7 2.0 3.1 3.6 3.6 2.7 1.6
Transp wind dir.S   S   S   S   S   S   S   S   S
Transp wind spd.8   8   8   16  16  16  18  18  18
LVORI...........7   5   3   3   1   1   1   1   1
ADI.............6   13  20  27  39  61  65  55  31

.TONIGHT...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of pcpn......10 percent.
Min temperature.....Around 64.
Max humidity........97 percent.
Wind (20 ft)........South winds 7 to 10 mph.
Max LVORI...........6.
Min ADI.............5.
Inversion Begin.....1800.

TIME (EST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........35  38  40  42  45  48  53  57  61  64  68  71
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   10
Temp............69  66  65  64  64  64  64  64  64  64  65  65
RH..............73  81  84  87  87  87  87  90  90  90  90  90
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..10  9   9   9   8   8   8   7   7   8   8   8
20 FT wind gust.16  13  13  13  11  11  11  9   9   11  11  11
Mix hgt (kft)...0.5 0.5 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.10  10  10  10  10  10  8   8   8   10  10  10
LVORI...........3   3   4   4   5   5   5   5   6   6   6   6
ADI.............9   9   9   7   6   6   5   7   7   8   8   8

.THURSDAY...

Sky/weather.........Mostly cloudy. Showers likely in the morning.
                    Slight chance of thunderstorms through the day.
                    Showers in the afternoon.
Chance of pcpn......90 percent.
Max temperature.....Around 77.
Min humidity........69 percent.
Wind (20 ft)........Southwest winds 7 to 11 mph shifting to the
                    west 7 to 9 mph late in the afternoon. Gusty
                    and erratic winds expected near thunderstorms
                    in the late morning and early afternoon.
Mixing Height.......Max 2500 ft AGL.
Transport winds.....Southwest around 10 mph increasing to 20 to 22
                    mph in the late morning and early afternoon,
                    then shifting to the west around 14 mph late in
                    the afternoon.
Max ADI.............48.
Inversion End.......0800.

TIME (EST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........74  77  76  76  78  83  89  93  93  91  87  84
Weather type....    RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........                SCH SCH SCH SCH SCH SCH
Chc of pcpn (%).10  20  40  50  60  70  80  90  80  70  50  40
Temp............65  65  66  70  74  76  77  76  76  75  74  72
RH..............93  97  93  84  76  71  69  71  71  71  71  71
20 FT wind dir..S   S   SW  SW  SW  SW  SW  SW  SW  W   W   W
20 FT wind spd..8   7   9   10  11  11  11  11  10  9   8   7
20 FT wind gust.11  9   13  16  18  18  18  16  14  11  11  9
Mix hgt (kft)...0.5 0.5 0.9 1.9 2.2 2.5 2.5 2.5 2.1 1.8 1.5 1.2
Transp wind dir.SW  SW  SW  SW  SW  SW  W   W   W   W   W   W
Transp wind spd.10  10  10  22  22  22  20  20  20  14  14  14
LVORI...........6   6   5   4   3   3   1   3   3   3   3   3
ADI.............10  9   14  36  45  48  48  42  37  29  24  16

$$

Forecaster...Holloway
Requested by...Adam McCullough
Type of request...PRESCRIBED
.TAG 2502852.0/CHS
.DELDT 02/12/25
.FormatterVersion 2.0.0
.EMAIL adam_mccullough@fws.gov