936
FNUS71 KOKX 111745
FWSOKX
SPOT FORECAST FOR BNL NORTHEAST COMPLEX G...BROOKHAVEN NATIONAL LABORATORY/BROOKHAVEN
NATIONAL WEATHER SERVICE NEW YORK NY
145 PM EDT WED JUN 11 2025
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON JUNE 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MAINLY DRY CONDITIONS ARE EXPECTED THROUGH THE FORECAST PERIOD. THERE IS
THE SLIGHT CHANCE OF AN ISOLATED SHOWER OR THUNDERSTORM EARLY THURSDAY
EVENING AHEAD OF A COLD FRONT.
A LIGHT WSW WIND IS ANTICIPATED ON THURSDAY. MINIMUM RELATIVE HUMIDITY
LEVELS FOR EASTERN LONG ISLAND WILL BE IN THE 45 TO 55 PERCENT RANGE ON
THURSDAY.
THURSDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........76 AT IGNITION...MAX 86.
RH..................64 PERCENT AT IGNITION...MIN 43 PERCENT.
WIND (20 FT)........WINDS WEST AT 8 MPH AT IGNITION...OTHERWISE
WEST WINDS 8 TO 10 MPH.
MIXING HEIGHT.......1600 FT AGL AT IGNITION...OTHERWISE 6100 FT
AGL.
TRANSPORT WINDS.....WEST 17 TO 25 MPH.
ADI.................46 EARLY IN THE MORNING INCREASING TO 109 IN
THE AFTERNOON.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 14 14 17 16 14 19 24 30
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0
TEMP............76 79 82 83 85 85 86 86 82
RH..............64 56 51 49 45 45 43 43 49
20 FT WIND DIR..260 260 270 270 260 260 260 250 250
20 FT WIND SPD..8 9 10 10 10 10 10 9 8
20 FT WIND GUST.14 14 16 16 16 16 16 14 14
MIX HGT (KFT)...1.6 3.4 4.9 5.7 6.0 6.0 6.1 5.7 4.9
TRANSP WIND DIR.260 270 280 280 280 290 280 270 260
TRANSP WIND SPD.21 23 25 25 24 22 21 20 17
ADI.............46 78 104 109 106 100 104 106 99
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE EVENING. SLIGHT
CHANCE OF SHOWERS EARLY IN THE EVENING.
CWR.................10 PERCENT INCREASING TO 20 PERCENT EARLY IN
THE EVENING, THEN DECREASING TO 0 PERCENT
OVERNIGHT.
CHANCE OF THUNDER...18 PERCENT.
TEMPERATURE.........MIN 63.
RH..................MAX 90 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
MIXING HEIGHT.......0 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 15 MPH SHIFTING TO THE NORTHWEST
AROUND 5 MPH LATE IN THE EVENING, THEN SHIFTING
TO THE NORTH AFTER 3 AM.
ADI.................70 EARLY IN THE EVENING DECREASING TO 0 LATE IN
THE NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........34 39 50 50 50 50 50 50 46 49 51 54
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH
CWR.............10 10 20 20 20 20 20 20 0 0 0 0
CHC OF THDR (%).0 0 20 20 20 0 0 0 0 0 0 0
TEMP............79 76 74 72 70 68 67 67 66 65 64 63
RH..............54 62 71 79 84 87 90 87 87 87 84 84
20 FT WIND DIR..240 230 230 240 270 280 290 310 320 330 000 010
20 FT WIND SPD..7 6 4 3 2 2 2 2 2 2 2 2
20 FT WIND GUST.10 7 6 4
MIX HGT (KFT)...3.4 1.6 0.3 0.1 0.1 0.3 0.3 0.3 0.3 0.3 0.3 0.3
TRANSP WIND DIR.250 240 230 240 270 280 290 310 320 330 000 010
TRANSP WIND SPD.15 12 9 7 6 5 5 5 5 5 5 5
ADI.............70 35 6 0 0 2 2 2 2 2 2 2
FORECASTER...JE
REQUESTED BY...KATHY SCHWAGER
TYPE OF REQUEST...PRESCRIBED
.TAG 2515765.0/OKX
.DELDT 06/11/25
.FORMATTERVERSION 2.0.0
.EMAIL KSCHWAGER@BNL.GOV
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