683
FNUS71 KBOX 011217
FWSBOX
SPOT FORECAST FOR CPED-RX-FMZ08-20250501-01...MASSACHUSETTS ARMY NATIONAL GUARD
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
817 AM EDT THU MAY 1 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON MAY 01.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
AREA OF HIGH PRESSURE PROVIDES DRY CONDITIONS TODAY. WILL HAVE
LIGHT EASTERLY WINDS THIS MORNING, TURN SOUTHEAST EARLY THURSDAY
AFTERNOON, GUST MAY APPROACH 15 KNOTS LATE THIS AFTERNOON. MINIMUM
RELATIVE HUMIDITY VALUE RANGES BETWEEN 30 AND 35 PERCENT.
INCREASED CLOUD COVER TONIGHT WITH LIGHT RAIN, RAINFALL AMOUNTS
ARE LESS THAN 0.15". RELATIVE HUMIDITY VALUES REBOUND OVERNIGHT
WITH MAXIMUM VALUES GREATER THAN 90 PERCENT. AREAS OF LOW CLOUDS
AND FOG DEVELOP AND LINGER INTO FRIDAY MORNING. PARTIAL CLEARING
FRIDAY AFTERNOON WITH GUSTY SOUTHWESTERLY WINDS NEAR 20 KNOTS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........34 PERCENT.
DEWPOINT............32.
MAX APPARENT TEMP...59.
SURFACE WINDS (MPH).EAST WINDS 7 TO 8 MPH SHIFTING TO THE SOUTHEAST
9 TO 12 MPH IN THE AFTERNOON.
WIND (20 FT)........SOUTHEAST WINDS 8 TO 12 MPH.
MIXING HEIGHT.......2700 FT AGL.
TRANSPORT WINDS.....EAST 7 TO 9 MPH SHIFTING TO THE SOUTHEAST 9 TO
12 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (12800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (21600 KNOT-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................19 TO 26 INCREASING TO 24 TO 31 IN THE
AFTERNOON.
CEILING (KFT).......11 DECREASING TO 10 LATE IN THE AFTERNOON.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........44 38 23 27 27 21 38 34
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
TEMP............54 56 58 59 59 59 58 57
DEWPOINT........32 31 31 31 32 32 33 33
RH..............43 38 36 34 36 36 39 40
HEAT INDEX (F)..54 56 58 59 59 59 58 57
20 FT WIND DIR..E E E SE SE SE S S
20 FT WIND SPD..7 8 8 9 9 10 12 12
20 FT WIND GUST.10 9 9 10 10 12 14 16
SURFACE WND DIR.E E E SE SE SE S S
SURFACE WND SPD.7 8 8 9 9 10 12 12
SURFACE WND GST.10 9 9 10 10 12 14 16
MIX HGT (KFT)...2.1 2.4 2.5 2.6 2.7 2.4 2.0 1.7
TRANSP WIND DIR.E E E SE SE SE S S
TRANSP WIND SPD.7 8 8 9 9 10 12 12
LVORI...........2 2 2 2 1 1 2 2
ADI.............19 25 26 30 31 31 28 24
VRATE KT-FT/1K..13 17 18 21 22 21 20 17
VENTRATE CAT....PR PR PR PR PR PR PR PR
CEILING (KFT)...13 13 12 11 10 10 10 10
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
CWR.................0 PERCENT INCREASING TO 91 PERCENT EARLY IN THE
MORNING.
MIN TEMPERATURE.....AROUND 47.
MAX HUMIDITY........93 PERCENT.
DEWPOINT............37 INCREASING TO 46.
MAX APPARENT TEMP...55.
SURFACE WINDS (MPH).SOUTH WINDS 9 TO 13 MPH.
WIND (20 FT)........SOUTH WINDS 9 TO 13 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
MORNING.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....SOUTH 12 TO 14 MPH.
SMOKE DISPERSAL.....POOR (2600 KNOT-FT).
LVORI...............4.
ADI.................12 TO 19 DECREASING TO 8 TO 12 UNTIL JUST AFTER
MIDNIGHT.
CEILING (KFT).......10 DECREASING TO 2.0.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........31 41 38 47 53 58 63 69 75 81 88 94
WEATHER COV..... SCH SCT SCT LKY LKY
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........ SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 90 90 90 90
TEMP............55 52 50 49 48 48 48 48 49 49 50 51
DEWPOINT........35 36 38 39 40 40 41 43 45 46 46 47
RH..............47 54 63 68 74 74 77 83 86 89 86 86
HEAT INDEX (F)..55 52 46 45 44 44 44 43 45 44 45 51
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..12 12 10 10 9 9 9 10 10 12 13 13
20 FT WIND GUST.15 13 12 12 12 12 14 15 15 16 17 14
SURFACE WND DIR.S S S S S S S S S S S S
SURFACE WND SPD.12 12 10 10 9 9 9 10 10 12 13 13
SURFACE WND GST.15 13 12 12 12 12 14 15 15 16 17 14
MIX HGT (KFT)...1.3 0.9 0.5 0.5 0.5 0.4 0.4 0.5 0.5 0.4 0.3 0.2
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.12 12 12 12 13 13 13 14 14 13 13 13
LVORI...........2 2 3 3 3 3 4 4 5 5 5 5
ADI.............19 12 8 10 11 11 11 12 12 11 11 11
VRATE KT-FT/1K..13 9 5 5 5 5 5 6 6 4 4 3
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...10 11 11 10 8.0 7.0 7.0 7.0 7.0 5.0 3.5 2.0
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE MORNING.
SCATTERED RAIN SHOWERS EARLY IN THE MORNING,
THEN SLIGHT CHANCE OF RAIN SHOWERS EARLY.
PATCHY FOG IN THE MORNING.
CWR.................91 PERCENT DECREASING TO 0 PERCENT THROUGH
EARLY AFTERNOON.
MAX TEMPERATURE.....AROUND 62.
MIN HUMIDITY........81 PERCENT.
DEWPOINT............51 INCREASING TO 54 EARLY.
MAX APPARENT TEMP...60.
SURFACE WINDS (MPH).SOUTH WINDS 14 TO 17 MPH SHIFTING TO THE
SOUTHWEST 15 TO 16 MPH IN THE AFTERNOON.
WIND (20 FT)........SOUTH WINDS AROUND 14 MPH SHIFTING TO THE
SOUTHWEST 15 TO 16 MPH IN THE AFTERNOON. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
EARLY IN THE MORNING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 14 TO 21 MPH.
SMOKE DISPERSAL.....POOR (2300 KNOT-FT).
LVORI...............4.
ADI.................15 TO 23.
CEILING (KFT).......1.5 DECREASING TO 0.8 EARLY IN THE MORNING,
THEN DECREASING TO 0.3 EARLY INCREASING TO 0.8
EARLY IN THE AFTERNOON INCREASING TO 1.0
INCREASING TO 1.5 EARLY IN THE AFTERNOON
INCREASING TO 2.0.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........94 94 93 88 79 71
WEATHER COV.....LIKELY S CHC PATCHY
WEATHER TYPE....RNSHWR RN/FG FOG NONE NONE NONE
TSTM COV........S CHC
CWR.............90 0 0 0 0 0
TEMP............51 54 57 59 60 60
DEWPOINT........49 51 53 54 54 54
RH..............93 90 86 83 81 81
HEAT INDEX (F)..51 54 57 59 60 60
20 FT WIND......S 14 S 14 S 16 SW 16 SW 15 SW 16
20 FT WIND GUST.15 16 22 24 25 25
SURFACE WIND....S 14 S 14 S 16 SW 16 SW 15 SW 16
SURFACE WND GST.15 16 22 24 25 25
MIX HGT (FT)....200 200 400 500 400 200
TRANSPORT WIND..S 14 S 15 S 18 SW 20 SW 16 SW 16
LVORI...........5 5 4 4 3 3
ADI.............15 16 20 21 18 18
VRATE KT-FT/1K..3 3 7 8 6 4
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
CEILING (KFT)...1.5 0.3 0.3 0.8 1.5 2.0
FORECASTER...DOOLEY
REQUESTED BY...JOEL CARLSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2512508.0/BOX
.DELDT 05/01/25
.FORMATTERVERSION 2.0.0
.EMAIL JOEL.CARLSON@MASS.GOV
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