135
FNUS71 KOKX 290737
FWSOKX

Spot Forecast for BNL Northeast Complex Unit C/D...Brookhaven National Lab
National Weather Service New York NY
337 AM EDT Mon Apr 29 2024

Forecast is based on ignition time of 0600 EDT on April 29.
If conditions become unrepresentative, contact the National Weather
Service.

631-924-0383

.DISCUSSION...
Winds start out today out of the NW around 5 kt. An afternoon sea
breeze is expected around 2 PM, bringing a southerly flow. Min RH
values this afternoon will be around 50 percent. There is a slight
chance of showers overnight.


.TODAY...

Sky/weather.........Mostly sunny (30-40 percent). Patchy fog early
                    in the morning.
CWR.................0 percent.
LAL.................No Tstms.
Temperature.........58 at ignition...Max 79.
RH..................93 percent at ignition...Min 50 percent.
Wind (20 ft)........Winds northwest at 5 mph at
                    ignition...otherwise Northwest winds 5 to 6 mph
                    shifting to the north around 6 mph late in the
                    morning, then becoming light early in the
                    afternoon becoming south 6 to 7 mph late in the
                    afternoon.
Mixing height.......100 ft AGL at ignition...otherwise 4500 ft AGL.
Transport winds.....Northwest 6 to 15 mph shifting to the southwest
                    10 to 13 mph late in the afternoon.
Smoke dispersal.....Poor /700 knot-ft/ at ignition. Max...excellent
                    /73300 knot-ft/.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........37  32  27  26  25  24  28  32  35  38  40  43
Weather cov.....PTY PTY
Weather type....FOG FOG
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   10
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............58  62  65  69  71  73  75  77  78  78  74  70
RH..............93  84  81  73  68  64  58  54  52  50  57  63
20 FT wind dir..310 320 340 350 350 000 000 000 210 180 170 170
20 FT wind spd..5   5   6   6   6   6   6   6   4   6   6   7
20 FT wind gust.10  8   10  11  10  10  8   7   5   7   10  12
Mix hgt (kft)...0.1 0.1 0.3 1.1 2.2 3.2 4.0 4.4 4.5 4.0 3.2 2.3
Transp wind dir.310 330 340 340 350 000 350 330 310 280 220 190
Transp wind spd.12  13  14  14  15  14  12  8   6   7   10  13
Vrate kt-ft/1K..1   0   3   15  34  54  68  73  68  53  34  18
Ventrate Cat....PR  PR  PR  PR  PR  FR  GD  GD  GD  FR  PR  PR

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    rain showers early in the evening.
CWR.................10 percent increasing to 20 percent early in
                    the evening.
LAL.................No Tstms.
Temperature.........Min 49.
RH..................Max 89 percent.
Wind (20 ft)........South winds 5 to 7 mph in the evening becoming
                    light.
Mixing height.......100 ft AGL.
Transport winds.....Southeast 8 to 14 mph decreasing to 8 to 9 mph
                    after 3 am.
Smoke dispersal.....Poor (2100 knot-ft).

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........48  53  58  62  65  69  72  74  76  78  81  83
Weather cov.....        SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
Weather type....        RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............10  10  20  20  20  20  20  20  20  20  20  20
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............65  60  56  54  53  53  53  52  52  51  50  50
RH..............68  78  83  83  86  86  83  86  83  86  89  89
20 FT wind dir..170 170 170 160 160 160 150 130 130 130 120 120
20 FT wind spd..7   6   6   5   5   4   4   4   4   4   4   4
20 FT wind gust.11  10  10  10  8   8   7   7   6   6   7   7
Mix hgt (kft)...1.5 0.8 0.3 0.1 0.1 0.3 0.3 0.3 0.3 0.2 0.2 0.3
Transp wind dir.180 170 170 160 160 160 150 130 130 120 120 120
Transp wind spd.14  14  14  13  10  9   8   9   9   8   8   9
Vrate kt-ft/1K..11  7   4   2   2   3   3   3   2   2   2   2
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TUESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Slight chance of
                    rain showers early in the morning.
CWR.................20 percent decreasing to 10 percent early in
                    the morning.
LAL.................No Tstms.
Temperature.........Max 61.
RH..................Min 64 percent.
Wind (20 ft)........East winds 5 to 8 mph.
Mixing height.......1800 ft AGL.
Transport winds.....Southeast 12 to 21 mph increasing to 18 to 23
                    mph in the late morning and afternoon.
Smoke dispersal.....Poor (1500 knot-ft) early in the morning
                    increasing to fair (24300 knot-ft) in the
                    afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........85  88  91  88  84  81  80  79  78  79  79  79
Weather cov.....SCH SCH
Weather type....RW  RW
Tstm cov........
CWR.............20  20  10  10  10  10  10  10  10  10  10  10
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............51  52  53  55  57  58  59  59  59  59  59  58
RH..............86  83  80  74  69  67  64  67  67  67  64  67
20 FT wind dir..120 110 110 110 110 110 110 110 110 110 110 110
20 FT wind spd..5   5   6   6   7   7   8   8   8   8   8   7
20 FT wind gust.8   10  10  11  12  13  13  14  14  13  12  10
Mix hgt (kft)...0.5 0.8 1.1 1.4 1.6 1.8 1.8 1.8 1.7 1.8 1.7 1.6
Transp wind dir.120 130 140 140 140 140 130 130 120 120 120 120
Transp wind spd.12  16  20  21  22  22  22  23  22  21  20  18
Vrate kt-ft/1K..2   2   2   6   12  18  22  24  24  24  22  18
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...JT
Requested by...Kathy Schwager
Type of request...PRESCRIBED
.TAG 2412632.0/OKX
.DELDT 04/28/24
.FormatterVersion 2.0.0
.EMAIL kschwager@bnl.gov