FNUS71 KOKX 181316 FWSOKX Spot Forecast for BNL Northeast Complex A&I...Brookhaven National Lab National Weather Service New York NY 916 AM EDT Mon May 18 2026 Forecast is based on ignition time of 0800 EDT on May 19. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... For Tuesday, initial forecast temperatures around 8am near 70 degrees. The temperatures are forecast to reach into the mid 80s for the afternoon for the forecast highs. SW winds initially around 8am near 7 to 10 mph, increasing to 12 to 15 mph late morning into the afternoon with gusts up to near 20 mph. Dry conditions expected. RH lowers to minimum of near 50 percent in the afternoon. .TUESDAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Chance of thunder...0 percent. Temperature.........70 at ignition...Max 87. RH..................73 percent at ignition...Min 46 percent. Wind (20 ft)........Winds southwest at 5 mph at ignition...otherwise Southwest winds 5 to 9 mph. Gusts up to 22 mph late in the afternoon. Mixing height.......500 ft AGL at ignition...otherwise 1200 ft AGL. Transport winds.....Southwest 13 to 21 mph. ADI.................11 early in the morning increasing to 69 in the afternoon. TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........24 32 21 25 26 30 36 42 34 24 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 Temp............70 75 78 81 82 84 84 85 86 83 RH..............73 64 58 53 51 49 49 48 46 51 20 FT wind dir..210 210 210 210 210 210 210 200 200 200 20 FT wind spd..5 6 6 6 7 8 9 9 9 9 20 FT wind gust.10 10 11 12 14 14 16 17 18 18 Mix hgt (kft)...0.5 0.7 1.0 1.1 1.2 1.2 1.1 0.8 0.9 0.7 Transp wind dir.230 230 240 230 230 230 210 210 200 220 Transp wind spd.13 14 15 14 15 15 17 20 21 20 ADI.............11 23 39 53 62 68 69 66 59 50 .TUESDAY NIGHT... Sky/weather.........Partly cloudy (25-35 percent). CWR.................10 percent. Chance of thunder...0 percent. Temperature.........Min 67. RH..................Max 73 percent. Wind (20 ft)........Southwest winds 6 to 9 mph. Gusts up to 22 mph in the evening. Mixing height.......500 ft AGL. Transport winds.....Southwest 14 to 20 mph. ADI.................22 to 42 early in the evening. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........25 27 36 30 33 35 35 34 34 31 29 26 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 10 10 10 10 10 10 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............81 77 72 70 70 70 70 70 69 68 68 68 RH..............53 60 68 71 68 68 68 68 70 73 73 73 20 FT wind dir..200 210 210 210 210 210 210 220 220 220 220 220 20 FT wind spd..9 8 7 7 7 7 7 7 7 7 6 6 20 FT wind gust.18 17 17 17 17 16 16 14 14 14 14 14 Mix hgt (kft)...0.7 0.6 0.6 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 Transp wind dir.220 230 220 230 230 220 220 230 230 230 230 230 Transp wind spd.20 16 16 14 15 17 17 16 15 15 14 14 ADI.............42 32 22 M M M M M M M M M .WEDNESDAY... Sky/weather.........Sunny (20-30 percent) then becoming mostlycloudy (65-75 percent). Showers likely late in the afternoon. Slight chance of thunderstorms late in the afternoon. CWR.................0 percent increasing to 70 percent late in the afternoon. Chance of thunder...20 percent. Temperature.........Max 87. RH..................Min 42 percent. Wind (20 ft)........Southwest winds 6 to 10 mph. Gusts up to 22 mph late in the morning. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......2800 ft AGL. Transport winds.....Southwest 14 to 21 mph. ADI.................MISSING. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........24 21 19 17 14 12 35 59 82 82 82 82 Weather cov..... LKY LKY LKY LKY Weather type.... RW RW RW RW Tstm cov........ SCH CWR.............0 0 0 0 0 0 0 0 70 70 70 70 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 20 Temp............69 71 74 78 82 86 87 87 87 87 85 83 RH..............73 68 64 56 49 43 42 42 42 43 48 53 20 FT wind dir..220 230 230 230 230 230 230 220 220 220 230 230 20 FT wind spd..6 6 6 6 7 8 9 10 10 10 8 7 20 FT wind gust.13 13 13 14 14 16 17 18 18 17 16 14 Mix hgt (kft)...0.6 0.7 0.8 0.9 1.1 1.3 1.9 2.5 2.8 2.5 1.9 1.0 Transp wind dir.230 240 240 240 240 240 240 240 240 240 250 250 Transp wind spd.14 14 14 14 15 16 18 20 21 21 20 17 ADI.............M M M M M M M M M M M M $$ Forecaster...JM Requested by...Kathy Schwager Type of request...PRESCRIBED .TAG 2613909.0/OKX .DELDT 05/18/26 .FormatterVersion 2.0.0 .EMAIL kschwager@bnl.gov