955
FNUS71 KBOX 261540
FWSBOX
SPOT FORECAST FOR LYMAN RESERVE FIELD 7...MASS DCR
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1140 AM EDT THU MAR 26 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MARCH 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
DRY WEATHER IS EXPECTED SUNDAY. LIGHT AND VARIABLE WINDS IN THE
MORNING WILL BECOME SOUTHWEST AROUND 10 MPH, WITH POTENTIAL GUSTS
15 TO 25 MPH AT TIMES. MINIMUM RELATIVE HUMIDITY WILL RANGE
BETWEEN 25 TO 35 PERCENT SUNDAY AFTERNOON.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 43.
MIN HUMIDITY........41 PERCENT.
DEWPOINT............19 INCREASING TO 23 LATE IN THE AFTERNOON.
MIN APPARENT TEMP...32.
SURFACE WINDS (MPH).SOUTHWEST WINDS 8 TO 12 MPH.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 12 MPH.
MIXING HEIGHT.......5900 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 24 MPH.
SMOKE DISPERSAL.....GOOD (55100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (96400 KNOT-FT) IN THE
AFTERNOON.
LVORI...............1.
ADI.................71 TO 90.
CEILING (KFT).......16 DECREASING TO 11 IN THE AFTERNOON.
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........17 22 28 33 36 40 43
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0
TEMP............38 40 42 43 43 42 41
DEWPOINT........17 18 20 21 22 23 24
RH..............42 41 41 41 43 46 50
HEAT INDEX (F)..32 34 36 37 37 36 34
20 FT WIND DIR..W SW SW SW SW SW SW
20 FT WIND SPD..8 9 10 12 12 12 12
20 FT WIND GUST.16 18 20 21 21 21 20
SURFACE WND DIR.W SW SW SW SW SW SW
SURFACE WND SPD.8 9 10 12 12 12 12
SURFACE WND GST.16 18 20 21 21 21 20
MIX HGT (KFT)...5.2 5.8 5.9 5.7 4.8 3.7 2.6
TRANSP WIND DIR.W W W W W SW SW
TRANSP WIND SPD.15 16 18 20 22 23 24
LVORI...........1 1 1 1 1 1 1
ADI.............90 71 82 85 89 83 71
VRATE KT-FT/1K..68 81 95 96 92 74 55
VENTRATE CAT....GD GD GD GD GD GD FR
CEILING (KFT)...18 16 14 11 12 13 13
SUNDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 33.
MAX HUMIDITY........82 PERCENT.
DEWPOINT............27 INCREASING TO 30 EARLY IN THE MORNING.
MIN APPARENT TEMP...30.
SURFACE WINDS (MPH).SOUTHWEST WINDS 7 TO 9 MPH.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 9 MPH.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 17 TO 22 MPH.
SMOKE DISPERSAL.....GOOD (36700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (9000 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............2 EARLY IN THE EVENING.
ADI.................13 TO 15 EARLY IN THE EVENING.
CEILING (KFT).......13 DECREASING TO 9.3.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........38 32 27 37 46 56 61 65 70 73 76 79
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............40 38 38 37 36 36 36 36 36 36 36 36
DEWPOINT........25 25 26 27 28 28 28 28 28 28 29 30
RH..............55 59 62 67 72 72 72 72 72 72 75 79
HEAT INDEX (F)..34 32 32 31 30 30 30 30 30 30 30 30
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..9 8 8 8 8 8 8 7 7 7 7 8
20 FT WIND GUST.18 17 16 16 15 15 15 15 15 16 16 17
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
SURFACE WND SPD.9 8 8 8 8 8 8 7 7 7 7 8
SURFACE WND GST.18 17 16 16 15 15 15 15 15 16 16 17
MIX HGT (KFT)...1.9 1.4 1.1 1.0 1.0 0.9 0.8 0.8 0.7 0.6 0.6 0.6
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.22 20 17 17 17 17 17 17 17 17 18 20
LVORI...........2 2 M M M M M M M M M M
ADI.............15 13 M M M M M M M M M M
VRATE KT-FT/1K..37 25 17 16 15 13 12 11 11 9 9 11
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...14 15 16 15 14 14 13 13 12 11 10 9.3
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY.
CWR.................3 PERCENT.
MAX TEMPERATURE.....AROUND 51.
MIN HUMIDITY........63 PERCENT.
DEWPOINT............33 INCREASING TO 38 IN THE LATE MORNING AND
AFTERNOON.
MIN APPARENT TEMP...30.
SURFACE WINDS (MPH).SOUTHWEST WINDS 8 TO 17 MPH. GUSTS UP TO 31
MPH.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 17 MPH. GUSTS UP TO 31
MPH.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 22 TO 31 MPH INCREASING TO 32 TO 36
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (17000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (66800 KNOT-FT) IN THE
AFTERNOON.
LVORI...............MISSING.
ADI.................MISSING.
CEILING (KFT).......7.5 DECREASING TO 5.1.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........78 78 77 75 74 72 74 75 77 76 74 73
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............36 37 38 41 45 48 49 50 50 50 50 50
DEWPOINT........31 32 33 35 37 38 38 38 38 38 39 39
RH..............82 82 82 79 73 68 66 63 63 63 66 66
HEAT INDEX (F)..30 30 31 34 39 42 43 44 44 44 44 44
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..8 9 10 12 14 15 16 17 17 17 17 16
20 FT WIND GUST.18 18 20 21 23 25 28 30 31 31 30 28
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
SURFACE WND SPD.8 9 10 12 14 15 16 17 17 17 17 16
SURFACE WND GST.18 18 20 21 23 25 28 30 31 31 30 28
MIX HGT (KFT)...0.9 1.2 1.6 1.9 2.1 2.3 2.3 2.2 2.1 2.1 2.0 1.9
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.22 25 28 29 30 31 33 35 36 35 33 32
LVORI...........M M M M M M M M M M M M
ADI.............M M M M M M M M M M M M
VRATE KT-FT/1K..17 27 38 48 55 61 65 67 66 64 59 54
VENTRATE CAT....PR PR PR FR FR GD GD GD GD GD FR FR
CEILING (KFT)...8.4 7.5 6.6 6.4 6.1 5.9 5.7 5.4 5.2 5.2 5.1 5.1
FORECASTER...NOCERA
REQUESTED BY...MICHAEL MARQUARDT
TYPE OF REQUEST...PRESCRIBED
.TAG 2608015.0/BOX
.DELDT 03/26/26
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL.MARQUARDT@MASS.GOV
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