Spot Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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FNUS71 KBOX 060859
FWSBOX
Spot Forecast for MCSF-Rx...MA DCR Fire
National Weather Service Boston/Norton MA
459 AM EDT Sun Oct 6 2024
Forecast is based on ignition time of 0900 EDT on October 06.
If conditions become unrepresentative, contact the National
Weather Service.
.DISCUSSION...
High pressure will result in plenty of sunshine today. NNE winds
5 to 10 knots this morning shift to more of an easterly direction
later this afternoon. High temperatures will be in the middle 60s
with minimum afternoon relative humidities dropping to between 55
and 65 percent.
Dry weather should prevail tonight...but rain showers are expected
to overspread the region Monday morning.
.REST OF TODAY...
CWR.................0 percent.
Max temperature.....Around 65.
Min humidity........62 percent.
Dewpoint............51.
Max apparent temp...64.
Surface winds (mph).Northeast winds 8 to 9 mph shifting to the east
6 to 8 mph late in the afternoon.
Wind (20 ft)........North winds around 8 mph shifting to the east 6
to 8 mph late in the afternoon.
Mixing height.......3800 ft AGL.
Transport winds.....North 6 to 14 mph.
Smoke dispersal.....Fair (16100 knot-ft) early in the morning
increasing to good (34900 knot-ft) in the
afternoon.
LVORI...............3.
ADI.................32 to 40 decreasing to 23 to 29 late in the
afternoon.
Haines Index........4 or low potential for large plume dominated
fire growth.
CEILING (KFT).......25 decreasing to 3.5, then increasing to 25 in
the afternoon.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
CWR.............0 0 0 0 0 0 0 0 0
Temp............57 60 63 64 64 64 63 63 63
Dewpoint........53 52 52 51 51 51 50 50 50
RH..............86 75 67 63 63 63 62 62 62
Heat index (F)..57 60 63 64 64 64 63 63 63
20 FT wind dir..N N N N NE NE NE E E
20 FT wind spd..8 9 9 9 9 9 8 7 6
20 FT wind gust.14 13 12 10 10 10 9 8 7
Surface wnd dir.N N N N NE NE NE E E
Surface wnd spd.8 9 9 9 9 9 8 7 6
Surface wnd gst.14 13 12 10 10 10 9 8 7
Mix hgt (kft)...1.8 2.3 2.8 3.2 3.5 3.8 3.6 3.4 3.2
Transp wind dir.N N N N N N N N N
Transp wind spd.14 13 13 12 12 10 9 7 6
LVORI...........4 3 3 1 1 1 1 2 2
ADI.............32 35 39 38 40 38 40 29 23
Haines index....4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..21 25 31 32 35 34 29 21 16
Ventrate Cat....PR PR PR PR PR PR PR PR PR
Ceiling (kft)...25 3.5 3.5 25 25 25 25 25 25
.TONIGHT...
CWR.................0 percent increasing to 17 percent early in the
morning.
Min temperature.....Around 53.
Max humidity........90 percent.
Dewpoint............50.
Max apparent temp...61.
Surface winds (mph).East winds around 5 mph early in the evening
becoming light.
Wind (20 ft)........East winds around 5 mph early in the evening
becoming light.
Mixing height.......100 ft AGL.
Transport winds.....Northeast 6 to 7 mph shifting to the south 3 to
5 mph after midnight.
Smoke dispersal.....Poor (500 knot-ft).
LVORI...............5.
ADI.................2 to 4.
Haines Index........4 or low potential for large plume dominated
fire growth.
CEILING (KFT).......25 decreasing to 10.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
CWR.............0 0 0 0 0 0 0 0 20 20 20 20
Temp............61 59 58 56 56 55 55 55 55 55 54 55
Dewpoint........50 50 49 49 49 49 49 49 49 51 51 51
RH..............67 72 72 77 77 80 80 80 80 86 90 86
Heat index (F)..61 59 58 56 56 55 55 55 55 55 54 55
20 FT wind dir..E E E E E SE SE SE N S S S
20 FT wind spd..5 2 1 1 1 1 1 1 0 1 1 2
20 FT wind gust.6 6 6 6 6 6 7 6 6 7 7 8
Surface wnd dir.E E E E E SE SE SE N S S S
Surface wnd spd.5 2 1 1 1 1 1 1 0 1 1 2
Surface wnd gst.6 6 6 6 6 6 7 6 6 7 7 8
Mix hgt (kft)...2.4 1.6 0.8 0.7 0.6 0.5 0.4 0.4 0.3 0.3 0.2 0.1
Transp wind dir.NE NE NE E E E SE S S S S S
Transp wind spd.6 6 6 7 7 8 7 5 3 3 5 5
LVORI...........3 3 3 4 4 5 5 5 5 6 7 6
ADI.............3 3 3 3 3 4 3 2 2 2 2 2
Haines index....4 4 4 4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..12 8 4 4 4 3 3 2 1 1 1 1
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
Ceiling (kft)...25 25 25 25 25 25 25 20 10 10 11 11
.MONDAY...
CWR.................17 percent increasing to 100 percent through
early afternoon, then decreasing to 86 percent
late in the afternoon.
Max temperature.....Around 68.
Min humidity........70 percent.
Dewpoint............53 increasing to 57 early.
Max apparent temp...66.
Surface winds (mph).Light winds becoming south 6 to 13 mph.
Wind (20 ft)........Light winds becoming south 6 to 13 mph. Gusty
and erratic winds expected near thunderstorms
early in the afternoon.
Mixing height.......1000 ft AGL.
Transport winds.....Southeast 7 to 16 mph shifting to the south 17
to 21 mph early.
Smoke dispersal.....Poor (1800 knot-ft) early in the morning
increasing to fair (14600 knot-ft) in the
afternoon.
LVORI...............4.
ADI.................3 to 11 increasing to 14 to 23 through early
afternoon.
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
CEILING (KFT).......8.0 decreasing to 6.0 early in the morning,
then decreasing to 3.0 early decreasing to 2.0
decreasing to 1.5 decreasing to 1.0 early in
the afternoon decreasing to 0.8 increasing to
1.0 late in the afternoon increasing to 1.5.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
CWR.............20 20 100 100 100 100 100 100 90 90 90 90
Temp............57 59 61 63 64 65 66 66 66 65 65 64
Dewpoint........51 52 53 54 55 56 56 57 58 58 58 58
RH..............80 78 75 72 73 73 70 73 75 78 78 81
Heat index (F)..57 59 61 63 64 65 66 66 66 65 65 64
20 FT wind dir..S S S S S S S S S S S S
20 FT wind spd..3 6 7 9 10 12 12 13 13 13 13 13
20 FT wind gust.10 13 15 16 18 20 21 21 22 20 17 16
Surface wnd dir.S S S S S S S S S S S S
Surface wnd spd.3 6 7 9 10 12 12 13 13 13 13 13
Surface wnd gst.10 13 15 16 18 20 21 21 22 20 17 16
Mix hgt (kft)...0.3 0.5 0.6 0.7 0.9 1.0 0.9 0.8 0.8 0.7 0.7 0.6
Transp wind dir.S SE SE SE S S S S S S S S
Transp wind spd.7 10 13 14 16 17 17 18 18 20 20 21
LVORI...........5 4 4 3 3 3 3 3 3 3 3 3
ADI.............3 11 14 15 19 22 21 21 20 21 21 23
Haines index....3 3 2 2 2 2 2 3 3 3 3 3
Vrate kt-ft/1K..2 4 7 9 12 15 14 14 13 12 12 11
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
Ceiling (kft)...8.0 6.0 3.5 3.0 2.0 1.5 1.0 0.8 0.8 0.8 1.0 1.5
$$
Forecaster...Frank
Requested by...Aaron Whiddon
Type of request...PRESCRIBED
.TAG 2423699.0/BOX
.DELDT 10/06/24
.FormatterVersion 2.0.0
.EMAIL aaron.whiddon@mass.gov