Spot Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
294
FNUS71 KBOX 070809
FWSBOX
Spot Forecast for Hassanamesit Reservation Burn...MassWildlife
National Weather Service Boston/Norton MA
409 AM EDT Tue May 7 2024
Forecast is based on ignition time of 0600 EDT on May 07.
If conditions become unrepresentative, contact the National
Weather Service.
.DISCUSSION...
High pressure will bring warm and dry conditions with light winds
today. Minimum RH values will decrease to 25 to 30 percent this
afternoon with NW winds averaging 5 to 10 mph.
Humidities increase this evening reaching max values of 80 to 85
percent late tonight. Mainly dry weather tonight with light winds.
Showers will move into the region after 6 am.
.TODAY...
Sky/weather.........Sunny.
CWR.................0 percent.
Max temperature.....Around 77.
Min humidity........30 percent.
Dewpoint............48 decreasing to 42 in the afternoon.
Max apparent temp...76.
Surface winds (mph).Northwest winds 5 to 9 mph.
Wind (20 ft)........Northwest winds 5 to 9 mph.
Mixing height.......7100 ft AGL.
Transport winds.....Northwest 8 to 12 mph shifting to the west 12
to 13 mph late in the afternoon.
Smoke dispersal.....Poor (3200 knot-ft) early in the morning
increasing to excellent (77600 knot-ft) in the
afternoon.
LVORI...............3.
ADI.................8 to 12 increasing to 25 late in the morning,
then increasing to 39 increasing to 61 early
increasing to 71 to 76 increasing to 85 to 86
early in the afternoon increasing to 96
decreasing to 86 late in the afternoon.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
CEILING (KFT).......25.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25 16 6 7 7 8 8 9 9 10 11 12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............54 57 60 63 66 69 71 72 74 75 76 76
Dewpoint........49 50 50 49 47 46 44 43 41 42 42 43
RH..............83 77 69 60 50 44 38 35 30 31 30 31
Heat index (F)..54 57 60 63 66 69 71 72 74 75 76 76
20 FT wind dir..NW N N N N N N NW NW NW NW W
20 FT wind spd..5 5 5 6 7 6 7 8 8 9 9 8
20 FT wind gust.8 8 13 10 10 10 10 12 13 14 13 13
Surface wnd dir.NW N N N N N N NW NW NW NW W
Surface wnd spd.5 5 5 6 7 6 7 8 8 9 9 8
Surface wnd gst.8 8 13 10 10 10 10 12 13 14 13 13
Mix hgt (kft)...0.4 0.5 1.0 1.8 3.5 5.3 6.2 6.8 6.9 7.0 7.1 6.9
Transp wind dir.N N N N N NW NW NW NW NW W W
Transp wind spd.9 8 10 10 9 9 10 10 12 12 13 12
LVORI...........4 4 3 2 1 1 1 1 1 1 1 1
ADI.............9 8 12 25 39 61 71 76 85 86 96 86
Haines index....5 5 5 5 4 4 4 5 5 5 5 5
Vrate kt-ft/1K..3 3 9 17 28 43 56 61 69 70 78 69
Ventrate Cat....PR PR PR PR PR FR FR GD GD GD GD GD
Ceiling (kft)...25 25 25 25 25 25 25 25 25 25 25 25
.TONIGHT...
Sky/weather.........Partly cloudy.
CWR.................0 percent.
Min temperature.....Around 50.
Max humidity........83 percent.
Dewpoint............45.
Max apparent temp...73.
Surface winds (mph).Northwest winds 6 to 7 mph early in the evening
becoming light.
Wind (20 ft)........Northwest winds around 7 mph decreasing to
around 6 mph early in the evening, then
becoming light until just after midnight.
Mixing height.......300 ft AGL.
Transport winds.....Northwest 7 to 12 mph shifting to the east 6 to
7 mph early in the morning.
Smoke dispersal.....Good (50700 knot-ft) early in the evening
decreasing to poor (1400 knot-ft) late in the
night.
LVORI...............3.
ADI.................67 decreasing to 2 to 3.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
CEILING (KFT).......25 decreasing to 11 early in the morning.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........11 9 8 15 23 30 30 29 29 35 42 48
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............73 70 66 62 59 58 56 56 54 53 51 50
Dewpoint........44 44 45 46 46 47 47 46 46 46 45 45
RH..............35 39 47 56 62 67 72 69 74 77 80 83
Heat index (F)..73 70 66 62 59 58 56 56 54 53 51 49
20 FT wind dir..NW NW NW NW NW W NW N N N NE NE
20 FT wind spd..7 6 3 2 2 2 2 2 3 3 3 3
20 FT wind gust.12 10 7 7 6 6 5 5 5 6 6 6
Surface wnd dir.NW NW NW NW NW W NW N N N NE NE
Surface wnd spd.7 6 3 2 2 2 2 2 3 3 3 3
Surface wnd gst.12 10 7 7 6 6 5 5 5 6 6 6
Mix hgt (kft)...5.1 1.2 0.5 0.4 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW NW NW N N N NE NE NE NE NE E
Transp wind spd.12 8 8 7 6 5 5 6 6 5 7 6
LVORI...........1 2 2 3 3 3 3 3 3 4 5 5
ADI.............67 13 4 3 3 2 2 3 3 2 3 3
Haines index....5 5 5 5 5 5 5 4 4 4 4 4
Vrate kt-ft/1K..51 9 4 2 2 1 1 2 2 2 2 2
Ventrate Cat....FR PR PR PR PR PR PR PR PR PR PR PR
Ceiling (kft)...25 25 25 25 25 25 25 25 25 25 25 11
.WEDNESDAY...
Sky/weather.........Partly sunny then becoming cloudy. Rain showers
likely and slight chance of thunderstorms.
CWR.................0 percent increasing to 50 percent through
early afternoon, then decreasing to 24 percent
late in the afternoon.
Max temperature.....Around 63.
Min humidity........75 percent.
Dewpoint............47 increasing to 56.
Max apparent temp...63.
Surface winds (mph).Light winds becoming southeast 5 to 6 mph
through early afternoon, then shifting to the
south late in the afternoon.
Wind (20 ft)........Light winds becoming southeast 5 to 6 mph
through early afternoon, then shifting to the
south late in the afternoon. Gusty and erratic
winds expected near thunderstorms early.
Mixing height.......1400 ft AGL.
Transport winds.....Southeast 7 to 9 mph shifting to the south 10
to 15 mph in the late morning and afternoon.
Smoke dispersal.....Poor (2200 knot-ft) early in the morning
increasing to fair (18700 knot-ft) in the
afternoon.
LVORI...............4.
ADI.................7 to 16 increasing to 19 to 28.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
CEILING (KFT).......10 decreasing to 0.8.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
Sky (%).........57 75 88 93 91 88
Weather cov.....S CHC CHANCE LIKELY LIKELY CHANCE LIKELY
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........ ISOLTD ISOLTD ISOLTD
CWR.............0 50 50 50 20 20
Temp............51 55 57 59 62 63
Dewpoint........46 48 51 53 55 56
RH..............83 77 80 80 78 78
Heat index (F)..51 55 57 59 62 63
20 ft wind......E 3 E 5 SE 6 SE 6 SE 6 S 5
20 ft wind gust.7 10 10 10 9 9
Surface wind....E 3 E 5 SE 6 SE 6 SE 6 S 5
Surface wnd gst.7 10 10 10 9 9
Mix hgt (ft)....400 900 1100 1400 1400 1300
Transport wind..E 7 SE 9 S 12 S 15 S 12 S 12
LVORI...........4 4 4 3 3 3
ADI.............7 11 16 28 20 19
Haines index....4 3 3 3 3 4
Vrate kt-ft/1K..2 7 11 19 14 13
Ventrate Cat....POOR POOR POOR POOR POOR POOR
Ceiling (kft)...11 10 4.0 0.8 0.8 0.8
$$
Forecaster...KJC
Requested by...Alex Entrup
Type of request...PRESCRIBED
.TAG 2413292.0/BOX
.DELDT 05/07/24
.FormatterVersion 2.0.0
.EMAIL alex.entrup@mass.gov