963
FNUS71 KOKX 291751
FWSOKX
SPOT FORECAST FOR BNL NORTHEAST COMPLEX H...BROOKHAVEN NATIONAL LABORATORY/BROOKHAVEN
NATIONAL WEATHER SERVICE NEW YORK NY
151 PM EDT TUE APR 29 2025
FORECAST IS BASED ON IGNITION TIME OF 0500 EDT ON APRIL 30.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A COLD FRONT APPROACHES THIS EVENING AND PUSHES THROUGH LATE
TONIGHT AND INTO EARLY WEDNESDAY MORNING. SOME RAIN SHOWERS
MAY OCCUR IN NORTHWEST PORTIONS OF THE HUDSON VALLEY,
OTHERWISE A WETTING RAIN IS NOT EXPECTED TONIGHT. BEHIND THE
FRONT THE WINDS BECOME NW AND GUSTY THROUGH THE EARLY AFTERNOON
ON WEDNESDAY. THE WINDS DIMINISH LATER IN THE AFTERNOON. HIGH
PRESSURE BUILDS AND RESULTS IN DRY WEATHER ACROSS THE AREA
THROUGH THURSDAY.
MINIMUM RH LEVELS WILL RANGE MOSTLY FROM 25 TO 30 PERCENT ON
WEDNESDAY, AND MOSTLY 35 TO 50 PERCENT ON THURSDAY WITH LIGHTER
SE WINDS BY THURSDAY AFTERNOON.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT) THEN BECOMING
SUNNY (15-25 PERCENT).
CWR.................10 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
TEMPERATURE.........60 AT IGNITION...MAX 73.
RH..................75 PERCENT AT IGNITION...MIN 28 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 10 MPH AT
IGNITION...OTHERWISE WEST WINDS AROUND 10 MPH
SHIFTING TO THE NORTHWEST 9 TO 12 MPH WITH
GUSTS TO AROUND 18 MPH.
MIXING HEIGHT.......300 FT AGL AT IGNITION...OTHERWISE 4700 FT AGL.
TRANSPORT WINDS.....WEST AROUND 24 MPH SHIFTING TO THE NORTHWEST 18
TO 26 MPH EARLY IN THE MORNING.
TIME (EDT) 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........54 51 49 46 40 34 28 24 21 17 16 16 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 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 0
TEMP............60 60 62 63 64 65 65 67 70 71 72 71 69
RH..............75 75 70 67 58 48 45 40 33 31 28 29 31
20 FT WIND DIR..240 260 290 310 310 320 330 330 320 320 320 320 320
20 FT WIND SPD..10 10 10 10 11 12 12 11 10 9 9 9 9
20 FT WIND GUST.14 14 16 17 18 18 18 17 16 14 14 13 13
MIX HGT (KFT)...0.3 0.1 0.1 0.3 1.1 2.1 3.1 3.8 4.3 4.6 4.7 4.7 4.5
TRANSP WIND DIR.240 260 290 310 310 320 330 330 330 330 330 330 330
TRANSP WIND SPD.24 24 24 24 25 26 26 25 24 22 21 20 18
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........MIN 47.
RH..................MAX 65 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......0 FT AGL.
TRANSPORT WINDS.....NORTHWEST 13 TO 18 MPH BECOMING NORTH 3 TO 8
MPH IN THE LATE EVENING AND OVERNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........15 15 15 16 16 17 22 26 31 33 34 36
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............67 63 60 58 57 55 53 51 50 48 47 47
RH..............32 36 41 45 47 49 52 56 58 63 65 65
20 FT WIND DIR..330 340 340 340 350 350 350 000 000 010 020 020
20 FT WIND SPD..7 5 3 2 2 2 2 2 2 2 2 2
20 FT WIND GUST.11 10 7 6 5 4 4 4 4 4 4 4
MIX HGT (KFT)...4.3 3.9 3.3 2.3 1.1 0.3 0.1 0.1 0.3 0.2 0.1 0.3
TRANSP WIND DIR.330 330 330 340 350 350 350 000 000 010 020 020
TRANSP WIND SPD.18 18 16 13 8 5 3 3 5 5 3 5
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........MAX 63.
RH..................MIN 41 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......4000 FT AGL IN THE MORNING AND EARLY AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 7 TO 12 MPH SHIFTING TO THE SOUTH
AROUND 9 MPH EARLY IN THE AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........35 35 34 35 35 36 36 37 37 40 44 47
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............48 50 52 55 58 60 61 62 62 61 60 59
RH..............63 61 56 51 45 42 41 41 41 42 44 45
20 FT WIND DIR..030 050 060 070 090 100 110 130 140 140 150 150
20 FT WIND SPD..2 2 2 3 3 4 4 5 5 5 5 5
20 FT WIND GUST.4 4 4 5 6 6 7 7 8 8 10 10
MIX HGT (KFT)...0.5 1.0 1.5 2.3 3.2 3.8 4.0 3.9 3.6 M M M
TRANSP WIND DIR.040 070 090 100 130 140 150 160 170 M M M
TRANSP WIND SPD.7 9 12 12 10 9 9 9 9 M M M
FORECASTER...JE
REQUESTED BY...KATHY SCHWAGER
TYPE OF REQUEST...PRESCRIBED
.TAG 2512191.0/OKX
.DELDT 04/29/25
.FORMATTERVERSION 2.0.0
.EMAIL KSCHWAGER@BNL.GOV
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