705
FNUS71 KOKX 301237
FWSOKX

Spot Forecast for BNL Northeast Complex A & I...Brookhaven National Laboratory/Brookhaven
National Weather Service New York NY
837 AM EDT Sat May 30 2026

Forecast is based on ignition time of 1000 EDT on May 30.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
It will be a mostly dry but windy day with northerly winds
gusting into the 30-35 mph range with a few occasional
gusts to 40-45 mph across the far eastern sections of CT
and Long Island. Min RH values will range from 40-60
percent.

Winds will diminish late this evening and overnight with
much less wind on Sunday. Winds will be from the
northwest 8-10 mph.


.REST OF TODAY...

Sky/weather.........Mostly cloudy (80-90 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........56 at ignition...Max 60.
RH..................57 percent at ignition...Min 51 percent.
Wind (20 ft)........Winds north at 16 mph at ignition...otherwise
                    North winds 14 to 17 mph with gusts to around
                    30 mph.
Mixing height.......5600 ft AGL at ignition...otherwise 5600 ft
                    AGL.
Transport winds.....North 40 to 45 mph.
ADI.................130 to 140.

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........73  94  93  91  90  86  81  77
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0
Temp............56  56  56  56  57  57  57  58
RH..............57  57  57  55  53  53  53  51
20 FT wind dir..340 350 350 000 000 000 010 010
20 FT wind spd..16  17  17  17  17  16  15  14
20 FT wind gust.26  30  30  30  30  28  26  25
Mix hgt (kft)...5.6 5.4 5.1 4.8 4.6 4.9 5.4 5.6
Transp wind dir.000 000 010 010 020 020 020 020
Transp wind spd.40  43  44  45  45  45  43  40
ADI.............140 134 132 132 133 138 139 130

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (25-35 percent) then becoming
                    clear (0-10 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Min 49.
RH..................Max 77 percent.
Wind (20 ft)........North winds 6 to 12 mph with gusts to around 21
                    mph early in the evening becoming light.
Mixing height.......300 ft AGL.
Transport winds.....North 29 to 37 mph decreasing to 8 to 13 mph.
ADI.................96 early in the evening decreasing to 1 late in
                    the night.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........62  48  34  29  24  19  14  9   4   3   2   1
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............57  56  55  53  52  52  51  50  50  49  49  49
RH..............51  53  55  59  61  63  66  68  71  74  74  77
20 FT wind dir..010 010 020 010 010 010 000 340 330 330 320 320
20 FT wind spd..12  9   7   6   4   3   2   2   2   3   3   4
20 FT wind gust.21  18  13  11  10  7   7   6   6   6   7   8
Mix hgt (kft)...5.2 4.5 3.8 3.3 2.9 2.5 2.2 2.0 1.7 1.1 0.5 0.3
Transp wind dir.020 020 020 030 030 030 020 010 000 350 330 320
Transp wind spd.37  32  29  24  22  18  15  13  10  9   8   9
ADI.............96  54  19  7   6   8   6   5   4   2   1   4

.SUNDAY...

Sky/weather.........Mostly sunny (20-30 percent) then becoming
                    mostly cloudy (65-75 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Max 74.
RH..................Min 37 percent.
Wind (20 ft)........Light winds becoming west 5 to 6 mph late in
                    the morning, then becoming around 6 mph late in
                    the afternoon.
Mixing height.......10200 ft AGL increasing to 10500 ft AGL late in
                    the afternoon.
Transport winds.....Northwest 10 to 18 mph.
ADI.................12 early in the morning increasing to 188 in
                    the afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   6   8   8   7   11  36  50  42  27  38  71
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............51  54  57  60  64  67  70  71  73  73  73  72
RH..............71  66  59  53  45  40  38  38  37  37  37  39
20 FT wind dir..320 320 320 320 310 300 300 290 280 280 270 250
20 FT wind spd..4   4   4   4   4   5   6   6   6   6   6   6
20 FT wind gust.8   8   8   8   8   8   10  10  10  10  10  10
Mix hgt (kft)...0.5 1.2 2.3 3.9 5.6 7.1 8.2 8.9 9.4 10  11  9.9
Transp wind dir.320 330 340 340 340 340 340 330 320 310 300 290
Transp wind spd.10  13  15  16  17  17  17  18  18  18  18  18
ADI.............12  26  47  80  117 147 160 165 166 180 188 178

$$
Forecaster...MW
Requested by...Kathy Schwager
Type of request...PRESCRIBED
.TAG 2614540.2/OKX
.DELDT 05/30/26
.FormatterVersion 2.0.0
.EMAIL kschwager@bnl.gov