681
FNUS71 KBOX 180921
FWSBOX
SPOT FORECAST FOR EXTRAVAGANJA PUBLIC SAFETY DETAILS...GREENFIELD FIRE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
521 AM EDT FRI APR 18 2025
FORECAST IS BASED ON FORECAST START TIME OF 1100 EDT ON APRIL 19.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
MAINLY DRY TODAY WITH AN INCREASING SOUTHWEST WIND. GUSTS UP TO 30
MPH POSSIBLE THIS AFTERNOON. LOW RISK FOR SPOTTY SHOWERS LATE THIS
AFTERNOON AS WELL.
SATURDAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...11 PERCENT.
BEGIN/END OF PCPN...
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........48 PERCENT.
SURFACE WINDS (MPH).SOUTHWEST WINDS 8 TO 10 MPH. GUSTS UP TO 24 MPH
IN THE AFTERNOON.
RAINFALL AMOUNT.....0.00 INCHES.
MIXING HEIGHT.......5100 FT AGL.
TRANSPORT WINDS.....WEST 22 TO 29 MPH.
SMOKE DISPERSAL.....GOOD (41400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (128100 KNOT-FT) IN THE
AFTERNOON.
LVORI...............1.
ADI.................44 INCREASING TO 75 EARLY IN THE AFTERNOON,
THEN INCREASING TO 94 EARLY IN THE AFTERNOON
INCREASING TO 105 EARLY IN THE AFTERNOON
DECREASING TO 85 INCREASING TO 105 LATE IN THE
AFTERNOON.
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 70 66 62 63 64 65
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).10 10 20 20 20 20 20
CHC OF THDR (%).0 0 0 10 10 10 10
TEMP............66 69 73 76 78 79 78
RH..............68 63 55 52 48 49 50
SURFACE WND DIR.SW SW SW SW SW SW SW
SURFACE WND SPD.8 9 9 10 10 9 9
SURFACE WND GST.18 20 21 22 23 23 24
MIX HGT (KFT)...2.2 3.1 4.0 4.9 5.0 5.1 5.1
TRANSP WIND DIR.SW W W W W W W
TRANSP WIND SPD.22 23 25 26 28 28 29
LVORI...........1 1 1 1 1 1 1
ADI.............44 75 94 105 105 85 105
VRATE KT-FT/1K..41 62 88 113 120 121 128
VENTRATE CAT....FR GD GD VGD VGD VGD VGD
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF RAIN SHOWERS UNTIL JUST AFTER
MIDNIGHT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...9 PERCENT.
BEGIN/END OF PCPN...
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........72 PERCENT.
SURFACE WINDS (MPH).WEST WINDS 6 TO 8 MPH. GUSTS UP TO 22 MPH EARLY
IN THE EVENING.
RAINFALL AMOUNT.....0.00 INCHES.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 24 MPH DECREASING TO 14 TO 23 MPH
UNTIL JUST AFTER MIDNIGHT.
SMOKE DISPERSAL.....EXCELLENT (78600 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (11900 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............2 UNTIL JUST AFTER MIDNIGHT.
ADI.................87 DECREASING TO 9 TO 15 UNTIL JUST AFTER
MIDNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........66 66 66 63 60 57 56 54 52 49 47 44
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).20 20 20 20 20 20 20 20 10 10 10 10
CHC OF THDR (%).10 10 0 0 0 0 0 0 0 0 0 0
TEMP............76 73 70 68 65 63 61 58 55 54 51 49
RH..............54 57 63 65 70 72 67 69 69 66 68 68
SURFACE WND DIR.W W W W W W W W W W W W
SURFACE WND SPD.8 7 7 6 6 6 6 6 6 6 7 7
SURFACE WND GST.22 21 18 17 15 14 14 15 15 15 16 16
MIX HGT (KFT)...3.7 2.4 1.0 1.4 1.7 2.1 2.0 1.9 1.8 2.1 2.5 2.9
TRANSP WIND DIR.W W W W W W W W W W NW NW
TRANSP WIND SPD.24 20 14 17 21 23 21 20 17 18 20 21
LVORI...........1 2 3 3 3 3 3 3 M M M M
ADI.............87 13 9 12 14 15 14 13 M M M M
VRATE KT-FT/1K..79 40 12 20 31 42 36 32 26 34 43 52
VENTRATE CAT....GD FR PR PR PR FR PR PR PR PR FR FR
FORECASTER...BELK
REQUESTED BY...CAPT. ALEX COOLEU
TYPE OF REQUEST...OTHER
.TAG 2510922.0/BOX
.DELDT 04/18/25
.FORMATTERVERSION 2.0.0
.EMAIL ALEX.COOLEY@GREENFIELD-MA.GOV
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