623
FNUS71 KBOX 240613
FWSBOX
SPOT FORECAST FOR BIRCH HILL WMA 6/24/2026...MASSWILDLIFE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
213 AM EDT THU SEP 24 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON SEPTEMBER 24.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
ONE MORE DAY OF DRY WEATHER THURSDAY BEFORE A STRONG OCEAN STORM
TRACKS NEAR THE COAST BRINGING STRONGER WINDS AND RAIN FRIDAY
THROUGH AT LEAST SUNDAY. THOUGH DRY, BREEZY CONDITIONS CONTINUE
THURSDAY DURING THE DAYLIGHT HOURS WITH GUSTS BETWEEN 15-20 MPH.
TODAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........52 PERCENT.
DEWPOINT............42 INCREASING TO 45 IN THE LATE MORNING AND
AFTERNOON.
MIN APPARENT TEMP...36.
SURFACE WINDS (MPH).NORTHEAST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
EARLY IN THE AFTERNOON.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
EARLY IN THE AFTERNOON.
MIXING HEIGHT.......3800 FT AGL.
TRANSPORT WINDS.....NORTHEAST 10 TO 16 MPH INCREASING TO 16 TO 20
MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (3800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (61400 KNOT-FT) IN THE
AFTERNOON.
LVORI...............5.
ADI.................5 EARLY IN THE MORNING INCREASING TO 79 IN THE
AFTERNOON.
CEILING (KFT).......25.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........12 9 8 0 0 1 1 2 12 14 19 27
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............41 40 43 50 55 58 60 62 63 63 62 61
DEWPOINT........42 41 44 46 45 45 45 45 45 45 45 45
RH..............100 100 100 85 70 62 58 54 52 52 54 56
HEAT INDEX (F)..38 36 40 48 55 58 60 62 63 63 62 61
20 FT WIND DIR..NE NE NE NE NE NE NE NE NE NE NE NE
20 FT WIND SPD..5 6 6 7 9 10 10 9 9 9 8 8
20 FT WIND GUST.12 13 13 15 18 18 18 18 20 20 18 17
SURFACE WND DIR.NE NE NE NE NE NE NE NE NE NE NE NE
SURFACE WND SPD.5 6 6 7 9 10 10 9 9 9 8 8
SURFACE WND GST.12 13 13 15 18 18 18 18 20 20 18 17
MIX HGT (KFT)...0.4 0.4 0.7 1.7 2.6 3.0 3.1 3.6 3.8 3.8 3.8 3.2
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE NE NE E
TRANSP WIND SPD.10 10 12 16 20 20 18 20 18 18 17 16
LVORI...........9 6 7 4 1 1 1 1 1 1 1 1
ADI.............5 11 12 35 43 46 45 51 50 50 79 64
VRATE KT-FT/1K..4 4 7 23 44 50 50 61 61 61 57 45
VENTRATE CAT....PR PR PR PR FR FR FR GD GD GD FR FR
CEILING (KFT)...25 25 25 25 25 25 25 25 25 25 25 25
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY
CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 42.
MAX HUMIDITY........99 PERCENT.
DEWPOINT............44.
MIN APPARENT TEMP...39.
SURFACE WINDS (MPH).NORTHEAST WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTHEAST 5 TO 9
MPH WITH GUSTS TO AROUND 24 MPH AFTER MIDNIGHT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 9 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTHEAST 5 TO 9
MPH WITH GUSTS TO AROUND 24 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHEAST 8 TO 13 MPH.
SMOKE DISPERSAL.....POOR (3100 KNOT-FT).
LVORI...............5.
ADI.................4 TO 13.
CEILING (KFT).......24.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........20 42 48 54 40 69
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............57 53 47 46 46 47
DEWPOINT........45 43 44 43 44 44
RH..............64 70 89 89 92 91
HEAT INDEX (F)..57 53 46 45 44 43
20 FT WIND......NE 6 NE 3 NE 3 N 3 N 5 NE 8
20 FT WIND GUST.15 10 12 14 16 22
SURFACE WIND....NE 6 NE 3 NE 3 N 3 N 5 NE 8
SURFACE WND GST.15 10 12 14 16 22
MIX HGT (FT)....900 400 400 400 400 400
TRANSPORT WIND..E 10 E 9 NE 9 NE 10 NE 12 NE 13
LVORI...........2 3 6 6 6 5
ADI.............13 4 4 5 5 11
VRATE KT-FT/1K..8 4 4 4 4 5
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
CEILING (KFT)...25 25 25 25 25 24
FRIDAY
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON.
CWR.................5 PERCENT.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........59 PERCENT.
DEWPOINT............44 INCREASING TO 49 IN THE LATE MORNING AND
AFTERNOON.
MAX APPARENT TEMP...64.
SURFACE WINDS (MPH).NORTHEAST WINDS 9 TO 13 MPH WITH GUSTS TO
AROUND 35 MPH.
WIND (20 FT)........NORTHEAST WINDS 9 TO 13 MPH WITH GUSTS TO
AROUND 35 MPH.
MIXING HEIGHT.......3900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 13 TO 22 MPH INCREASING TO 17 TO 30
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (4800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (73600 KNOT-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................11 EARLY IN THE MORNING INCREASING TO 61 IN THE
AFTERNOON.
CEILING (KFT).......22 DECREASING TO 11.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........73 69 62 69 80 66
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............46 49 59 62 64 64
DEWPOINT........43 46 49 49 49 50
RH..............90 90 69 62 59 62
HEAT INDEX (F)..41 44 59 62 64 64
20 FT WIND......NE 9 NE 10 NE 13 NE 13 NE 13 NE 12
20 FT WIND GUST.24 22 24 26 28 26
SURFACE WIND....NE 9 NE 10 NE 13 NE 13 NE 13 NE 12
SURFACE WND GST.24 22 24 26 28 26
MIX HGT (FT)....500 1000 2600 3400 3900 3400
TRANSPORT WIND..NE 13 NE 14 NE 21 NE 23 NE 22 NE 20
LVORI...........5 4 1 1 1 1
ADI.............11 18 46 58 59 50
VRATE KT-FT/1K..5 12 47 67 74 58
VENTRATE CAT....POOR POOR FAIR GOOD GOOD FAIR
CEILING (KFT)...24 24 23 23 23 20
FORECASTER...BRW
REQUESTED BY...ALEX ENTRUP
TYPE OF REQUEST...PRESCRIBED
.TAG 2622441.0/BOX
.DELDT 09/24/26
.FORMATTERVERSION 2.0.0
.EMAIL ALEX.ENTRUP@MASS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page