735
FNUS72 KCHS 201200
FWSCHS

Spot Forecast for C156 #2...USFS
National Weather Service Charleston SC
800 AM EDT Tue May 20 2025

Forecast is based on ignition time of 0800 EDT on May 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Southwest surface winds between 5-10 mph this morning are expected
to turn more south and increase to 13-18 mph with a sea breeze
arriving at the spot site between 12 PM to 2 PM. There is also a
slight chance for an isolated shower and/or thunderstorm to impact
the site mid-late afternoon today with gusty winds being the
primary concern. A few showers and thunderstorms could also impact
the site with the arriving cold front Wednesday late morning and
afternoon.

Fog potential for tonight: Low.


.REST OF TODAY...

Sky/weather.........Mostly sunny. Slight chance of showers and
                    thunderstorms late in the afternoon.
Chance of pcpn......20 percent.
Max temperature.....Around 88.
Min humidity........63 percent.
Wind (20 ft)........Light winds becoming south 6 to 10 mph late in
                    the afternoon. Gusty and erratic winds expected
                    near thunderstorms late in the afternoon.
Mixing Height.......Max 2700 ft AGL.
Transport winds.....Light winds becoming south 6 to 10 mph in the
                    late morning through the afternoon.
Max ADI.............31.
Inversion End.......1000

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51  51  51  50  49  48  47  45  44  42
Weather type....                        RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH SCH
Chc of pcpn (%).0   0   0   0   0   0   20  20  20  20
Temp............73  78  83  86  87  88  87  86  85  84
RH..............93  82  72  68  65  63  65  68  67  70
20 FT wind dir..W   W   SW  S   S   S   S   S   S   SE
20 FT wind spd..1   2   2   3   3   5   7   8   8   9
20 FT wind gust.2   4   5   7   7   9   11  13  13  14
Mix hgt (kft)...0.6 1.1 1.7 2.4 2.5 2.6 2.7 2.3 1.9 1.8
Transp wind dir.W   SW  SW  SW  S   S   S   S   S   S
Transp wind spd.2   6   6   6   8   8   8   10  10  10
LVORI...........8   4   3   3   3   2   3   3   3   3
ADI.............1   6   13  22  22  26  31  27  26  24

.TONIGHT...

Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening.
Chance of pcpn......20 percent.
Min temperature.....Around 72.
Max humidity........100 percent.
Wind (20 ft)........South winds 5 to 7 mph shifting to the
                    southwest around 5 mph overnight. Gusty and
                    erratic winds expected near thunderstorms early
                    in the evening.
Max LVORI...........9.
Min ADI.............1.
Inversion Begin.....1000

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........40     36     35     37     40     44
Weather type....RNSHWR NONE   NONE   NONE   NONE   NONE
Tstm cov........S CHC
Chc of pcpn (%).20     10     10     10     10     10
Temp............83     78     75     73     73     73
RH..............72     82     90     97     97     97
20 ft wind......SE 7   SE 6   S 5    S 5    SW 5   SW 5
20 ft wind gust.13     11     9      7      7      7
Mix hgt (ft)....1600   700    600    600    500    600
Transport wind..SE 8   SE 8   S 6    S 6    S 6    SW 6
LVORI...........4      5      6      8      8      8
ADI.............1      3      3      3      3      4

.WEDNESDAY...

Sky/weather.........Mostly sunny. Slight chance of showers and
                    thunderstorms early in the morning.
Chance of pcpn......20 percent.
Max temperature.....Around 91.
Min humidity........50 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    morning.
Mixing Height.......Max 6200 ft AGL.
Transport winds.....Southwest around 8 mph increasing to west 18 to
                    24 mph in the late morning and afternoon.
Max ADI.............137.
Inversion End.......0800

TIME (EDT)      6 AM         10 AM        2 PM
Sky (%).........48           25           30
Weather type....NONE         RNSHWR       RNSHWR
Tstm cov........             S CHC        S CHC
Chc of pcpn (%).10           20           20
Temp............72           83           88
RH..............100          72           59
20 FT wind......SW 5G7       W 6G11       SW 9G14
Mix hgt (ft)....600          3200         5200
Transport wind..SW 8         W 18         W 22
LVORI...........9            3            1
ADI.............6            72           137

$$
Forecaster...APT
Requested by...Mike Leslie
Type of request...PRESCRIBED
.TAG 2514321.0/CHS
.DELDT 05/20/25
.FormatterVersion 2.0.0
.EMAIL michael.c.leslie@usda.gov