744
FNUS71 KBOX 161039
FWSBOX
SPOT FORECAST FOR COONAMESSETT...MASS DCR
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
639 AM EDT SUN MAR 16 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON MARCH 17.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
INCREASING SOUTHERLY WINDS EXPECTED TODAY WITH GUSTS UP TO 30 MPH
BY THE NOON HOUR. EXPECT THE LIGHT RAIN/DRIZZLE TO CONTINUE ALL
DAY AND INTO THE EVENING. FRONTAL SYSTEM WILL BRING MODERATE TO
HEAVY RAIN STARTING AROUND 2AM MONDAY AND LASTING INTO MONDAY
EVENING. RAIN WILL BEGIN TO TAPER OFF OVERNIGHT MONDAY INTO
TUESDAY, HOWEVER, LIGHT RAIN SHOWERS/DRIZZLE COULD CONTINUE INTO
LATE TUESDAY MORNING. WINDS REMAIN SOUTH MUCH OF MONDAY GUSTING TO
30MPH, BEFORE DIMINISHING MONDAY EVENING BEFORE TURNING WEST
BETWEEN 8-11PM
HIGH PRESSURE BUILDS IN ON TUESDAY WITH DRY CONDITIONS AND NORTH
WINDS AROUND 10-15MPH.
MINRH TODAY AND MONDAY WILL BE AROUND 80-90% DROPPING TO 50-60% ON
TUESDAY.
MONDAY
SKY/WEATHER.........CLOUDY. PATCHY FOG. RAIN.
CWR.................100 PERCENT.
MAX TEMPERATURE.....AROUND 54.
MIN HUMIDITY........86 PERCENT.
DEWPOINT............50.
MAX APPARENT TEMP...54.
SURFACE WINDS (MPH).SOUTH WINDS 12 TO 20 MPH WITH GUSTS TO AROUND
32 MPH DECREASING TO AROUND 10 MPH LATE IN THE
AFTERNOON.
WIND (20 FT)........SOUTH WINDS 12 TO 20 MPH WITH GUSTS TO AROUND
32 MPH DECREASING TO AROUND 10 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......900 FT AGL.
TRANSPORT WINDS.....SOUTH 23 TO 31 MPH DECREASING TO 14 TO 21 MPH
EARLY.
SMOKE DISPERSAL.....POOR (8100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (20800 KNOT-FT) IN THE
AFTERNOON.
LVORI...............5.
ADI.................26 TO 34 DECREASING TO 15 TO 23 EARLY.
CEILING (KFT).......0.3.
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........100 100 100 100 100 100 100 99 99 98
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............100 100 100 100 100 100 100 100 100 100
TEMP............52 53 53 53 53 54 54 54 53 52
DEWPOINT........52 52 52 51 51 51 51 50 50 49
RH..............100 96 96 93 93 90 90 86 89 89
HEAT INDEX (F)..52 53 53 53 53 54 54 54 53 52
20 FT WIND DIR..S S S S S S S S S S
20 FT WIND SPD..20 18 18 17 16 16 15 14 12 10
20 FT WIND GUST.31 32 30 29 28 26 25 23 20 17
SURFACE WND DIR.S S S S S S S S S S
SURFACE WND SPD.20 18 18 17 16 16 15 14 12 10
SURFACE WND GST.31 32 30 29 28 26 25 23 20 17
MIX HGT (KFT)...0.7 0.9 0.8 0.8 0.7 0.7 0.7 0.7 0.7 0.7
TRANSP WIND DIR.S S S S S S S S S S
TRANSP WIND SPD.31 26 23 21 20 17 15 15 15 14
LVORI...........4 4 4 5 5 4 4 4 4 5
ADI.............34 32 26 23 21 19 16 16 16 15
VRATE KT-FT/1K..19 21 17 14 13 11 9 9 9 8
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
MONDAY NIGHT
SKY/WEATHER.........CLOUDY. RAIN.
CWR.................100 PERCENT DECREASING TO 80 PERCENT EARLY IN
THE MORNING.
MIN TEMPERATURE.....AROUND 37.
MAX HUMIDITY........96 PERCENT.
DEWPOINT............46 DECREASING TO 37.
MIN APPARENT TEMP...33.
SURFACE WINDS (MPH).SOUTHWEST WINDS 6 TO 9 MPH SHIFTING TO THE WEST
AROUND 6 MPH LATE IN THE EVENING, THEN SHIFTING
TO THE NORTH 6 TO 10 MPH WITH GUSTS TO AROUND
21 MPH AFTER MIDNIGHT.
WIND (20 FT)........SOUTH WINDS AROUND 9 MPH SHIFTING TO THE
SOUTHWEST 6 TO 7 MPH IN THE EVENING, THEN
SHIFTING TO THE NORTH 6 TO 10 MPH WITH GUSTS TO
AROUND 21 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 12 MPH SHIFTING TO THE WEST 8
TO 12 MPH EARLY, THEN SHIFTING TO THE NORTH 14
TO 23 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....FAIR (26300 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (3600 KNOT-FT) LATE IN THE
NIGHT.
LVORI...............6.
ADI.................5 TO 13 INCREASING TO 19 TO 26 AFTER MIDNIGHT.
CEILING (KFT).......0.3 INCREASING TO 0.8 AFTER MIDNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........98 97 97 97 96 96 96 95 95 95 95 95
WEATHER COV.....DEF DEF LKY DEF DEF DEF DEF LKY LKY LKY LKY CHC
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............100 100 100 100 100 100 100 100 80 80 80 80
TEMP............51 49 48 47 46 45 44 43 42 41 41 40
DEWPOINT........48 48 47 46 44 43 42 41 40 39 38 37
RH..............89 96 96 96 93 93 93 93 93 92 89 89
HEAT INDEX (F)..51 46 45 44 43 42 40 38 36 35 35 33
20 FT WIND DIR..S SW SW W NW N N N N N N N
20 FT WIND SPD..9 7 6 6 6 6 7 8 9 9 10 10
20 FT WIND GUST.15 14 12 13 13 14 15 17 18 20 20 21
SURFACE WND DIR.S SW SW W NW N N N N N N N
SURFACE WND SPD.9 7 6 6 6 6 7 8 9 9 10 10
SURFACE WND GST.15 14 12 13 13 14 15 17 18 20 20 21
MIX HGT (KFT)...0.6 0.6 0.5 0.7 0.9 1.1 1.2 1.2 1.2 1.3 1.3 1.3
TRANSP WIND DIR.SW W W NW N N N N N N N N
TRANSP WIND SPD.12 10 8 12 14 17 20 21 23 23 23 23
LVORI...........5 6 7 6 6 5 5 5 5 5 4 4
ADI.............10 7 5 8 9 12 13 19 21 21 21 26
VRATE KT-FT/1K..6 5 4 7 11 17 20 22 25 25 26 26
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...0.3 0.3 0.3 0.3 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF RAIN EARLY.
CWR.................80 PERCENT DECREASING TO 0 PERCENT.
MAX TEMPERATURE.....AROUND 46.
MIN HUMIDITY........65 PERCENT.
DEWPOINT............35.
MIN APPARENT TEMP...32.
SURFACE WINDS (MPH).NORTH WINDS 9 TO 12 MPH.
WIND (20 FT)........NORTH WINDS 9 TO 12 MPH.
MIXING HEIGHT.......1700 FT AGL.
TRANSPORT WINDS.....NORTH 22 TO 26 MPH.
SMOKE DISPERSAL.....FAIR (25000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (39000 KNOT-FT) IN THE
AFTERNOON.
LVORI...............3.
ADI.................26 TO 33 INCREASING TO 37 TO 46 IN THE LATE
MORNING AND AFTERNOON.
CEILING (KFT).......0.8 INCREASING TO 1.5.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........92 90 88 84 80 76 72 68 64 61 58 55
WEATHER COV.....CHC CHC CHC CHC CHC SCH SCH SCH SCH
WEATHER TYPE....RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............80 80 20 20 20 20 20 20 0 0 0 0
TEMP............39 39 39 40 42 44 45 46 46 46 46 45
DEWPOINT........36 36 35 35 36 36 35 35 35 35 35 34
RH..............89 89 85 82 79 73 68 65 65 65 65 65
HEAT INDEX (F)..32 32 32 33 36 38 39 41 41 41 41 40
20 FT WIND DIR..N N N N N N N N N N N N
20 FT WIND SPD..10 12 12 12 12 12 12 12 12 10 10 9
20 FT WIND GUST.21 22 22 22 21 21 21 20 20 18 17 16
SURFACE WND DIR.N N N N N N N N N N N N
SURFACE WND SPD.10 12 12 12 12 12 12 12 12 10 10 9
SURFACE WND GST.21 22 22 22 21 21 21 20 20 18 17 16
MIX HGT (KFT)...1.3 1.3 1.3 1.4 1.6 1.7 1.7 1.6 1.6 1.5 1.5 1.5
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.23 22 22 23 25 26 26 26 26 25 24 23
LVORI...........4 4 4 3 3 3 1 1 1 1 3 3
ADI.............26 33 33 37 43 46 46 45 45 42 39 37
VRATE KT-FT/1K..26 25 25 29 35 39 38 37 36 34 31 29
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...0.8 0.8 0.8 0.8 1.0 1.0 1.0 1.5 1.5 1.5 1.5 1.5
FORECASTER...KP
REQUESTED BY...JOSH NIGRO
TYPE OF REQUEST...PRESCRIBED
.TAG 2506598.0/BOX
.DELDT 03/16/25
.FORMATTERVERSION 2.0.0
.EMAIL JOSH.NIGRO@MASS.GOV
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