Suppression Forecast
Issued by NWS Upton, NY

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433
FNUS71 KOKX 232250
FWSOKX

Spot Forecast for BNL East Unit D...Brookhaven National Laboratory
National Weather Service New York NY
650 PM EDT Fri Jun 23 2017

Forecast is based on ignition time of 1800 EDT on June 23.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Shwrs and tstms are possible tngt, and likely Sat mrng. Otherwise,
it will remain humid with min rh Sat around 50 percent.

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Scattered
                    showers in the evening. Scattered
                    thunderstorms. Numerous showers after midnight.
                    Patchy fog late.
CWR.................20 percent, increasing to 70 percent.
Min temperature.....Around 73.
Max humidity........93 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 9 to 12 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening. Gusty and erratic winds expected near
                    thunderstorms after midnight.
Mixing height.......100-1300 ft AGL.
Transport winds.....Southwest 26 to 32 mph.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........63  74  79  79  80  80  80  80  81  84  87  90
Weather cov.....ISO ISO ISO SCT SCT SCT SCT SCT SCT SCT NUM NUM
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........ISO ISO ISO SCT SCT SCT SCT ISO ISO ISO ISO ISO
CWR.............20  20  20  30  30  40  40  40  50  50  60  70
Temp............75  75  75  75  74  74  74  74  74  74  73  73
RH..............84  84  87  87  90  87  87  87  87  90  93  93
20 FT wind dir..200 200 210 210 220 220 220 210 210 210 220 230
20 FT wind spd..9   10  11  11  11  11  10  10  9   10  12  12
20 FT wind gust.20  20  15  15  15  15  15  15  15  15  20  20
Mix hgt (kft)...1.3 0.7 0.3 0.1 0.1 0.3 0.5 0.7 0.9 0.9 0.9 0.9
Transp wind dir.220 210 210 210 220 220 220 220 220 220 230 230
Transp wind spd.32  29  26  26  26  26  26  28  28  30  31  31

.SATURDAY...

Sky/weather.........Cloudy (85-95 percent), then becoming mostly
                    sunny (45-55 percent). Patchy fog early in the
                    morning. Showers likely in the morning. A
                    chance of thunderstorms. A chance of showers in
                    the afternoon.
CWR.................70 percent, decreasing to 10 percent.
Max temperature.....Around 86.
Min humidity........51 percent.
Wind (20 ft)........
 Slope/valley.......West winds 8 to 13 mph with gusts up to 25 mph.
                    Gusty and erratic winds expected near
                    thunderstorms in the morning. Gusty and erratic
                    winds expected near thunderstorms late in the
                    morning.
Mixing height.......1000-2300 ft AGL, increasing to 5400-6100 ft
                    AGL.
Transport winds.....Southwest 22 to 29 mph, becoming northwest 16
                    to 24 mph in the late morning and afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........93  96  100 89  79  69  64  58  38  34  30  26
Weather cov.....LKY LKY LKY LKY CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH CHC CHC CHC
CWR.............70  70  60  60  50  40  30  30  10  10  10  10
Temp............73  74  75  76  77  79  80  82  83  84  84  83
RH..............93  84  79  76  76  72  67  61  57  53  51  53
20 FT wind dir..230 230 220 240 260 270 280 290 290 290 280 270
20 FT wind spd..10  8   6   7   9   11  12  13  13  13  12  11
20 FT wind gust.15  15  10  10  20  20  20  25  25  25  20  20
Mix hgt (kft)...1.0 1.3 1.7 2.3 3.0 3.7 4.0 4.2 4.5 5.4 6.1 6.1
Transp wind dir.230 240 240 250 260 270 280 290 300 300 300 300
Transp wind spd.29  25  22  18  17  16  18  22  24  24  22  21

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................10 percent.
Min temperature.....Around 63.
Max humidity........87 percent.
Wind (20 ft)........
 Slope/valley.......West winds 5 to 9 mph with gusts up to 20 mph
                    in the evening, becoming light and variable.
Mixing height.......4400 ft AGL, decreasing to 0-300 ft AGL.
Transport winds.....Northwest 9 to 18 mph, decreasing to 5 to 8 mph
                    late.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........22  18  15  14  14  14  14  14  14  14  14  14
Weather cov.....
Weather type....
Tstm cov........
CWR.............10  10  10  10  0   0   0   0   0   0   0   0
Temp............81  79  76  74  71  70  68  67  65  64  63  63
RH..............54  58  64  66  73  76  81  81  87  87  87  87
20 FT wind dir..270 260 250 250 260 260 270 290 300 300 300 300
20 FT wind spd..9   6   6   5   5   5   5   4   4   3   3   2
20 FT wind gust.20  10  10  10  10  10  10  5   5   5   5   5
Mix hgt (kft)...4.4 2.1 0.3 0.1 0.1 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Transp wind dir.290 260 250 250 260 260 270 290 300 300 300 300
Transp wind spd.18  15  14  13  12  12  10  10  9   8   6   5

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................10 percent.
Max temperature.....Around 83.
Min humidity........44 percent.
Wind (20 ft)........
 Slope/valley.......Light and variable winds, becoming southwest 5
                    to 8 mph in the late morning and afternoon.
Mixing height.......800-2500 ft AGL, increasing to 3600-4700 ft AGL
                    late in the morning, then increasing to
                    4700-6600 ft AGL late in the morning,
                    decreasing to 3500 ft AGL late.
Transport winds.....Southwest 3 to 12 mph, increasing to 13 to 14
                    mph late.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14  14  14  16  17  19  21  22  24  25  26  27
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   10  10  10  10
Temp............64  66  67  70  73  76  79  81  83  83  83  82
RH..............84  81  81  73  64  58  50  47  44  44  44  46
20 FT wind dir..300 300 300 290 270 260 260 240 230 230 240 240
20 FT wind spd..2   2   3   4   5   6   6   7   8   8   8   8
20 FT wind gust.5   5   5   5   10  10  15  15  15  15  15  15
Mix hgt (kft)...0.8 1.5 2.5 3.6 4.7 5.6 6.3 6.6 6.5 5.8 4.7 3.5
Transp wind dir.330 350 000 330 280 250 240 230 230 220 210 210
Transp wind spd.3   3   3   5   7   8   9   10  12  13  14  14

$$
Forecaster...JMC
Requested by...Kathy Schwager
Type of request...PRESCRIBED
.TAG 1710951.0/OKX
.EMAIL kschwager@bnl.gov



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