Suppression Forecast
Issued by NWS Columbia, SC

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000
FNUS72 KCAE 081154
FWSCAE

Spot Forecast for Savannah River RX 5/8/21...USDA
National Weather Service Columbia SC
754 AM EDT Sat May 8 2021

Forecast is based on ignition time of 1000 EDT on May 08.
If conditions become unrepresentative...contact the National Weather
Service.

Positive or negative feedback including observations taken at
the burn site would be greatly appreciated. You can use the same
webpage where you requested the spot forecast for this. You may
also call our office if you have questions or concerns.

.DISCUSSION...
Pressure ridge centered to the south of the area. Air mass remains
dry. The afternoon relative humidity will drop to around 24 percent
late in the afternoon as mixing increases. Think winds will increase
by 200 pm to 300 pm and the humidity will drop at this time. Fair
dispersion tonight.

.TODAY...

Sky/weather.........Sunny (0-10 percent).
Chance of pcpn......0 percent.
LAL.................No Tstms.
Max temperature.....Around 78.
Min humidity........24 percent.
Wind (20 ft)........Light winds becoming west 10 mph with
                    gusts to near 20 mph late this afternoon.

Mixing height.......200-1700 ft AGL increasing to 5300-6900 ft AGL.
Transport winds.....West 3 to 12 mph increasing to 15 to 20 mph
                    late in the morning.
LVORI...............4.
Max ADI.............86.

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1   2   3   4   6   7   8   9
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0
Temp............65  70  72  74  76  77  77  77
RH..............43  35  31  28  25  24  25  26
20 FT wind dir..W   W   W   W   W   W   W   W
20 FT wind dir..270 280 270 270 270 270 270 270
20 FT wind spd..6   7   7   8   8   9   10  9
20 FT wind gust.12  15  15  17  17  20  21  20
Mix hgt (kft)...3.2 4.7 5.3 6.0 6.7 6.8 6.8 6.9
Transp wind dir.W   W   W   W   W   W   W   W
Transp wind spd.12  15  16  17  18  20  20  20
LVORI...........1   1   1   1   1   1   1   1
ADI.............38  60  69  77  86  67  68  68
LAL.............1   1   1   1   1   1   1   1

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Chance of pcpn......0 percent.
LAL.................No Tstms.
Min temperature.....Around 55.
Max humidity........69 percent.
Wind (20 ft)........West winds 5 to 8 mph early in the evening
                    becoming light.
Mixing height.......4900 ft AGL decreasing to 300-900 ft AGL.
Transport winds.....West 8 to 16 mph shifting to the south 2 to 6
                    mph in the late evening and overnight.
LVORI...............2.
Min ADI.............1.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........12     17     17     17     16     16
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............76     71     65     62     60     58
RH..............30     44     56     60     64     67
20 ft wind......W 8    W 5    SW 3   SW 2   S 2    S 2
20 ft wind gust.17     9      6      3      3      3
Mix hgt (ft)....4900   900    700    500    300    300
Transport wind..W 16   W 8    W 5    SW 3   S 3    S 2
LVORI...........1      2      3      3      3      3
ADI.............66     4      2      2      2      1
LAL.............1      1      1      1      1      1

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......0 percent.
LAL.................No Tstms.
Max temperature.....Around 86.
Min humidity........29 percent.
Wind (20 ft)........Light winds becoming south 5 to 11 mph with
                    gusts to around 18 mph in the late morning and
                    afternoon.
Mixing height.......200-1300 ft AGL increasing to 4900-6000 ft AGL.
Transport winds.....South 2 to 9 mph increasing to southwest 23 to
                    24 mph.
LVORI...............2.
Max ADI.............79.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........16        17        18        25
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Chc of pcpn (%).0         0         0         0
Temp............56        64        79        85
RH..............74        60        36        30
20 FT wind......S 2G3     S 5G9     S 9G18    S 11G22
Mix hgt (ft)....200       1300      4100      5800
Transport wind..S 2       S 9       S 20      SW 24
LVORI...........3         2         1         1
ADI.............1         15        55        79
LAL.............1         1         1         1

$$
Forecaster...Petrolito
Requested by...Jarvis Brown
Type of request...PRESCRIBED
.TAG 2111957.0/CAE
.DELDT 05/08/21
.EMAIL jarvis.brown@usda.gov


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