535
FNUS72 KCAE 101743
FWSCAE

Spot Forecast for Gaston HAZMAT Incident...SCEMD
National Weather Service Columbia SC
143 PM EDT Thu Sep 10 2026

Forecast is based on forecast start time of 1400 EDT on September 10.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Ridge of high pressure offshore has been generally leading to
increasing moisture and increasing temperatures. Chance for
showers and storms will be limited today with activity remaining
near the coast and not expected to progress inland. Winds remain
light with high pressure in place favoring a generally southerly
direction. Moisture continues to increase into tomorrow with
isolated thunderstorms developing, increasing in coverage
Saturday. While exact timing remains somewhat uncertain, generally
will favor mid to late afternoon. Winds remain southerly shifting
a bit more southwesterly tomorrow and Saturday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
Chance of pcpn......10 percent.
Max temperature.....Around 93.
Min humidity........58 percent.
Surface winds (mph).Light winds.
Mixing height.......5500 ft AGL.
Transport winds.....South 5 to 6 mph.

TIME (EDT)      2PM 3PM 4PM 5PM
Sky (%).........39  57  48  49
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   10  10  10
Temp............91  91  92  91
RH..............56  56  52  56
Aparnt tmp (F)..100 100 100 100
Surface wnd dir.S   S   S   S
Surface wnd dir.200 190 190 190
Surface wnd spd.2   2   3   3
Surface wnd gst.6   6   6   7
Mix hgt (kft)...5.2 5.5 5.1 4.6
Transp wind dir.S   S   SW  S
Transp wind dir.200 200 210 200
Transp wind spd.5   6   6   6

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent). Slight chance of
                    showers and thunderstorms early in the evening.
Chance of pcpn......20 percent.
Min temperature.....Around 74.
Max humidity........97 percent.
Surface winds (mph).Light winds.
Mixing height.......500 ft AGL.
Transport winds.....South 6 to 10 mph.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........51     57     57     65     73     66
Weather cov.....S CHC
Weather type....RNSHWR NONE   NONE   NONE   NONE   NONE
Tstm cov........S CHC
Chc of pcpn (%).20     10     0      0      0      0
Temp............89     83     79     78     76     75
RH..............59     74     88     91     94     97
Aparnt tmp (F)..97     90     79     78     76     75
Surface wind....S 3    S 4    S 4    S 3    S 3    SW 2
Surface wnd gst.8      12     12     10     9      8
Surface wnd dir.180    190    180    200    200    210
Mix hgt (ft)....3700   500    500    500    500    500
Transp wind dir.200    180    180    190    210    220
Transport wind..S 6    S 8    S 10   S 9    SW 8   SW 8

.FRIDAY...

Sky/weather.........Partly sunny (50-60 percent). Slight chance of
                    showers and thunderstorms early in the
                    afternoon. Chance of showers and thunderstorms
                    late in the afternoon.
Chance of pcpn......50 percent.
Max temperature.....Around 94.
Min humidity........60 percent.
Surface winds (mph).Light winds.
Mixing height.......4400 ft AGL.
Transport winds.....Southwest 5 to 9 mph.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........74        48        51        64
Weather cov.....                              CHANCE
Weather type....NONE      NONE      NONE      RNSHWR
Tstm cov........                              CHANCE
Chc of pcpn (%).0         0         10        50
Temp............74        77        89        93
RH..............100       94        66        56
Aparnt tmp (F)..74        77        100       105
Surface wind....SW 2G6    SW 1G5    S 2G5     S 3G7
Surface wnd dir.210       220       200       170
Mix hgt (ft)....500       1200      3700      4100
Transp wind dir.220       240       240       200
Transport wind..SW 7      SW 7      SW 5      S 7

$$
Forecaster...Landolfi
Requested by...Bethany Morton
Type of request...HAZMAT
.TAG 2621590.0/CAE
.DELDT 09/10/26
.FormatterVersion 2.0.0
.EMAIL Bmorton@emd.sc.gov