Spot Forecast
Issued by NWS Atlanta, GA

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Spot Forecast for Emergency Communication Field Day/Exercise and...DeKalb County Office of Emergency Management
National Weather Service Peachtree City GA
407 PM EDT Fri Jun 21 2024

Forecast is based on forecast start time of 1800 EDT on June 21.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Good afternoon! A ridge of high pressure north of the
area will gradually weaken over the next several days. A tropical
wave will continue to slowly approach the Northeast Florida and
Southeast Georgia coast tonight, bringing increasing moisture to the
area. The National Hurricane Center is forecasting a 60 percent
chance of this wave developing into a short-lived tropical depression
before reaching the coast. However, even if this occurs, the system
is forecast to remain weak, and impacts to the exercise area will
remain largely unchanged compared to tropical wave impacts.

Rain chances are forecast to remain below 10 percent through Saturday
night as better chances for showers and thunderstorms associated with
the tropical feature remain well southeast of the area. However, the
increasing low-level moisture, in concert with slowly rising
temperatures through the weekend, will lead to increasing heat
indices. Maximum heat indices on Saturday afternoon are forecast to
reach around 96, with values near 98 Sunday afternoon.

By Sunday afternoon, there will be a slight chance (15%) of
showers and thunderstorms as moisture from the remnant tropical
feature continues to slowly spread across the area.

Winds will be generally light out of the east through Saturday with
gusts to around 10 mph each afternoon. Winds will become west of
Sunday, but speeds are expected to remain light, with gusts to 14
mph during the afternoon.

If you require additional information, please call us at 770-486-1133
extension 4.

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
Chance of pcpn......0 percent.
Min temperature.....Around 71.
Max humidity........85 percent.
Heat index..........91 in the early evening.
Surface winds (mph).East 5 to 7 mph decreasing to around 5 mph in the
                    late evening and overnight.
Rainfall amount.....0.00 inches.
Ceiling (kft).......6.0 increasing to 25 in the late evening and
                    overnight.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........35  35  35  34  32  31  29  27  26  25  22  20
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............90  89  88  85  82  79  78  76  75  74  73  72
RH..............39  40  42  49  54  59  61  65  68  73  77  81
Heat index (F)..91  90  89  86  84  79  78  76  75  74  73  72
Surface wnd dir.E   E   E   E   E   E   E   E   E   E   E   E
Surface wnd spd.7   6   5   5   3   3   3   3   2   2   2   2
Surface wnd gst.10  9   8   7   6   6   5   5   5   5   3   3
Ceiling (kft)...6.0 6.0 6.0 25  25  25  25  25  25  25  25  25

.SATURDAY...

Sky/weather.........Sunny (20-30 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 94.
Min humidity........40 percent.
Heat index..........96 in the afternoon.
Surface winds (mph).East around 5 mph.
Rainfall amount.....0.00 inches.
Ceiling (kft).......25 decreasing to 3.5 late in the morning, then
                    increasing to 6.0 in the afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........17  14  13  15  20  24  28  33  36  35  32  29
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............71  71  75  78  82  85  88  89  91  92  93  93
RH..............84  85  81  76  66  58  53  48  44  43  41  40
Heat index (F)..71  71  75  78  86  90  91  93  94  95  96  96
Surface wnd dir.E   E   E   E   E   E   E   E   E   E   E   E
Surface wnd spd.2   2   2   2   2   3   3   3   3   5   5   5
Surface wnd gst.3   3   3   3   5   5   6   6   6   7   7   7
Ceiling (kft)...25  25  25  25  25  3.5 4.0 5.0 5.0 5.0 6.0 6.0

.SATURDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
Chance of pcpn......10 percent.
Min temperature.....Around 75.
Max humidity........87 percent.
Heat index..........96 in the early evening.
Surface winds (mph).Southeast around 5 mph in the evening
                    becoming light and variable.
Rainfall amount.....0.00 inches.
Ceiling (kft).......6.0 increasing to 25 in the late evening and
                    overnight.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........26  23  22  23  26  28  31  34  35  34  31  28
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   10  0   0   0   0   0   0   0   0   10
Temp............93  92  90  88  85  83  81  80  79  78  77  75
RH..............41  43  46  51  57  62  67  70  73  77  81  87
Heat index (F)..96  94  93  91  88  86  84  80  79  78  77  75
Surface wnd dir.E   E   SE  SE  SE  SE  SE  S   S   S   S   S
Surface wnd spd.5   3   3   3   3   2   2   2   2   2   2   1
Surface wnd gst.7   7   6   6   5   5   5   5   3   3   3   2
Ceiling (kft)...6.0 6.0 6.0 25  25  25  25  25  25  25  25  25

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......10 percent.
Max temperature.....Around 96.
Min humidity........35 percent.
Heat index..........98 in the afternoon.
Surface winds (mph).Light and variable becoming west 5 to 7 mph
                    in the afternoon.
Rainfall amount.....0.00 inches.
Ceiling (kft).......25 early in the morning.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  22  20  19  16  15  17  20  22  22  23  23
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  10  10  10  15  15  15
Temp............75  76  77  81  85  88  91  93  94  95  96  95
RH..............87  86  82  74  64  55  48  42  39  36  35  35
Heat index (F)..75  76  77  84  90  94  95  96  97  97  98  97
Surface wnd dir.S   S   SW  SW  W   W   W   W   W   W   W   W
Surface wnd spd.1   1   1   1   2   2   3   5   6   6   7   7
Surface wnd gst.2   2   5   6   6   7   8   10  12  13  13  13
Ceiling (kft)...25  25

$$
Forecaster...Carroll
Requested by...EM Supervisor Scott Tibbetts
Type of request...OTHER
.TAG 2416444.0/FFC
.DELDT 06/20/24
.FormatterVersion 2.0.0
.EMAIL dekalbema@dekalbcountyga.gov