850
FNUS71 KBOX 291215
FWSBOX
SPOT FORECAST FOR MUDDY BROOK WCE 5/29/2026...MASSWILDLIFE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
815 AM EDT FRI MAY 29 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MAY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
INCREASING CLOUDS THROUGH THE DAY WITH SCATTERED SHOWERS
DEVELOPING AFTER MID-AFTERNOON, CONTINUING THROUGH TONIGHT. LOW
CHANCE FOR WETTING RAIN WITHIN ANY SHOWERS. NW WINDS 5-10 MPH,
INCREASING TO 6-15 MPH WITH GUSTS UP TO 20 MPH LATE MORNING. WINDS
SHIFT MORE W-WSW IN THE AFTERNOON. SMOKE DISPERSAL IMPROVES TO
EXCELLENT WITH BETTER MIXED WINDS LATE MORNING. MIXING HEIGHTS
RISE TO AROUND 7500 FT IN THE AFTERNOON. MIN RELATIVE HUMIDITIES
35-40 PERCENT. MID-LEVEL CEILINGS MOVE IN THIS AFTERNOON.
RAIN TONIGHT INTO SATURDAY WITH NW/N WINDS BECOMING GUSTY SATURDAY
WITH GUSTS 30-40 MPH.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS LATE IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 11 PERCENT LATE IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........36 PERCENT.
DEWPOINT............44.
MAX APPARENT TEMP...71.
SURFACE WINDS (MPH).WEST WINDS 9 TO 13 MPH WITH GUSTS TO AROUND 24
MPH.
WIND (20 FT)........WEST WINDS 9 TO 13 MPH WITH GUSTS TO AROUND 24
MPH.
MIXING HEIGHT.......7500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 16 TO 22 MPH.
SMOKE DISPERSAL.....GOOD (45000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (127300 KNOT-FT) IN THE
AFTERNOON.
LVORI...............1.
ADI.................40 EARLY IN THE MORNING INCREASING TO 99 IN THE
AFTERNOON.
CEILING (KFT).......8.0 DECREASING TO 5.0.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........28 24 38 45 47 73 85 87 88
WEATHER COV..... SCH SCH SCH
WEATHER TYPE.... RW RW RW
TSTM COV........
CWR.............0 0 0 0 0 10 10 10 10
TEMP............62 64 67 69 70 71 70 69 67
DEWPOINT........45 44 43 43 44 43 44 45 45
RH..............54 48 42 39 39 36 39 42 45
HEAT INDEX (F)..62 64 67 69 70 71 70 69 67
20 FT WIND DIR..NW NW NW NW W W W W W
20 FT WIND SPD..9 12 13 13 13 12 12 12 12
20 FT WIND GUST.23 24 24 23 22 21 21 24 24
SURFACE WND DIR.NW NW NW NW W W W W W
SURFACE WND SPD.9 12 13 13 13 12 12 12 12
SURFACE WND GST.23 24 24 23 22 21 21 24 24
MIX HGT (KFT)...3.6 4.9 6.2 7.0 7.5 7.0 5.0 4.7 3.2
TRANSP WIND DIR.NW NW NW NW NW W W W W
TRANSP WIND SPD.18 20 22 21 20 18 18 21 16
LVORI...........1 1 1 1 1 1 1 1 1
ADI.............80 80 99 98 95 64 56 62 40
VRATE KT-FT/1K..58 84 118 125 127 112 80 85 45
VENTRATE CAT....FR GD VGD VGD VGD VGD GD GD FR
CEILING (KFT)...8.0 7.0 6.0 6.0 6.0 6.0 5.0 5.0 5.0
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN
BECOMING MOSTLY CLOUDY. RAIN SHOWERS LIKELY IN
THE EVENING. CHANCE OF RAIN SHOWERS AFTER
MIDNIGHT.
CWR.................11 PERCENT INCREASING TO 39 PERCENT UNTIL JUST
AFTER MIDNIGHT, THEN DECREASING TO 28 PERCENT
EARLY IN THE MORNING.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........89 PERCENT.
DEWPOINT............47 DECREASING TO 41 EARLY IN THE MORNING.
MIN APPARENT TEMP...38.
SURFACE WINDS (MPH).WEST WINDS 8 TO 12 MPH SHIFTING TO THE
NORTHWEST EARLY IN THE MORNING.
WIND (20 FT)........WEST WINDS 8 TO 12 MPH SHIFTING TO THE
NORTHWEST EARLY IN THE MORNING.
MIXING HEIGHT.......900 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 17 MPH.
SMOKE DISPERSAL.....GOOD (31000 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (10200 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............3.
ADI.................10 TO 34.
CEILING (KFT).......5.0 INCREASING TO 6.0 EARLY, THEN DECREASING TO
4.5 IN THE LATE EVENING AND EARLY MORNING
DECREASING TO 3.5 EARLY IN THE MORNING
DECREASING TO 2.5.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........84 85 92 89 89 87 84 70 52 49 63 76
WEATHER COV..... SCH CHC CHC LKY CHC CHC SCH
WEATHER TYPE.... RW RW RW RW RW RW RW
TSTM COV........
CWR.............10 10 40 40 40 40 40 40 30 30 30 30
TEMP............65 64 62 60 58 57 55 53 51 49 46 44
DEWPOINT........46 47 48 48 47 49 47 46 43 41 40 40
RH..............50 54 60 64 67 75 74 77 74 74 79 86
HEAT INDEX (F)..65 64 62 60 58 57 55 53 51 44 41 38
20 FT WIND DIR..W W W W W W W NW W NW NW NW
20 FT WIND SPD..12 10 10 9 9 8 9 10 12 12 12 13
20 FT WIND GUST.20 15 12 12 10 18 17 21 20 21 22 23
SURFACE WND DIR.W W W W W W W NW W NW NW NW
SURFACE WND SPD.12 10 10 9 9 8 9 10 12 12 12 13
SURFACE WND GST.20 15 12 12 10 18 17 21 20 21 22 23
MIX HGT (KFT)...2.1 1.7 1.0 1.0 1.2 1.0 1.2 1.4 1.1 0.9 1.4 1.2
TRANSP WIND DIR.W W W SW SW W W NW NW NW NW NW
TRANSP WIND SPD.17 14 13 12 13 14 15 17 16 16 15 16
LVORI...........1 2 2 3 3 3 3 3 3 3 3 4
ADI.............34 29 11 10 11 12 13 19 14 14 17 14
VRATE KT-FT/1K..31 20 11 10 14 13 16 20 15 12 19 17
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...5.0 5.0 6.0 5.0 5.0 5.0 5.0 5.0 5.0 4.5 3.5 2.5
SATURDAY
SKY/WEATHER.........CLOUDY THEN BECOMING PARTLY SUNNY. RAIN IN THE
MORNING, THEN RAIN LIKELY IN THE AFTERNOON.
CWR.................34 PERCENT DECREASING TO 0 PERCENT LATE IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 53.
MIN HUMIDITY........59 PERCENT.
DEWPOINT............38.
MIN APPARENT TEMP...30.
SURFACE WINDS (MPH).NORTH WINDS 17 TO 22 MPH DECREASING TO 14 TO 17
MPH LATE IN THE AFTERNOON. GUSTS UP TO 36 MPH.
WIND (20 FT)........NORTH WINDS 14 TO 22 MPH. GUSTS UP TO 36 MPH.
MIXING HEIGHT.......4800 FT AGL.
TRANSPORT WINDS.....NORTH 17 TO 26 MPH INCREASING TO 22 TO 30 MPH
IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....FAIR (22500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (96100 KNOT-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................28 EARLY IN THE MORNING INCREASING TO 78 IN THE
AFTERNOON.
CEILING (KFT).......2.0 DECREASING TO 1.5 EARLY, THEN INCREASING TO
2.0 INCREASING TO 2.5 EARLY IN THE AFTERNOON
INCREASING TO 3.0 INCREASING TO 4.0 LATE IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........84 92 100 100 100 100 100 99 99 89 79 69
WEATHER COV.....CHC CHC LKY LKY LKY DEF LKY CHC SCH SCH
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............30 30 30 30 30 30 30 30 0 0 0 0
TEMP............42 41 40 40 40 41 44 47 49 50 51 52
DEWPOINT........39 38 37 37 37 37 37 38 38 38 38 38
RH..............89 89 89 89 89 85 76 71 66 63 61 59
HEAT INDEX (F)..34 32 30 30 30 32 36 40 43 44 51 52
20 FT WIND DIR..NW N N N N N N N N N N N
20 FT WIND SPD..17 21 22 22 22 21 20 18 17 17 16 14
20 FT WIND GUST.28 31 36 36 36 36 36 35 35 32 30 28
SURFACE WND DIR.NW N N N N N N N N N N N
SURFACE WND SPD.17 21 22 22 22 21 20 18 17 17 16 14
SURFACE WND GST.28 31 36 36 36 36 36 35 35 32 30 28
MIX HGT (KFT)...1.5 2.3 2.8 2.6 2.7 3.0 3.5 3.8 4.0 3.8 4.8 4.1
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.17 23 26 25 28 29 30 29 28 23 22 25
LVORI...........4 4 4 4 4 4 3 3 1 1 1 1
ADI.............28 48 61 57 63 69 77 78 76 62 66 71
VRATE KT-FT/1K..23 46 65 58 66 75 91 96 96 76 90 90
VENTRATE CAT....PR FR GD FR GD GD GD GD GD GD GD GD
CEILING (KFT)...2.0 2.0 1.5 1.5 2.0 2.0 2.5 2.5 3.0 3.5 4.0 4.0
FORECASTER...FT
REQUESTED BY...ALEX ENTRUP
TYPE OF REQUEST...PRESCRIBED
.TAG 2614626.1/BOX
.DELDT 05/29/26
.FORMATTERVERSION 2.0.0
.EMAIL ALEX.ENTRUP@MASS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page