Spot Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
789
FNUS71 KBOX 201901
FWSBOX
Spot Forecast for Sharpener pond Rd...North Andover fire
National Weather Service Boston/Norton MA
201 PM EST Wed Nov 20 2024
Forecast is based on forecast start time of 1500 EST on November 20.
If conditions become unrepresentative, contact the National
Weather Service.
.DISCUSSION...
...ELEVATED FIRE WEATHER CONCERNS TODAY...
North Andover
Light northeast winds less than 5 knots becoming east by this
evening. No gusty winds expected today. MinRH bottoms out around
50-55 percent. This is the last day of dry weather. Rain arrives
Thursday morning and continues through the day, into the first
half of Thursday night. One inch or slightly more is expected.
East winds will increase on Thursday, 10 to 15 mph sustained with
gusts to 25 mph.
Minimum RH values today will range between 45 to 60 percent, and
over 80 percent on Thursday.
.REST OF TODAY...
Sky/weather.........Mostly sunny.
CWR.................0 percent.
Max temperature.....Around 55.
Min humidity........63 percent.
Wind (20 ft)........Northeast winds 5 to 6 mph late in the
afternoon becoming light.
Mixing height.......1400 ft AGL.
Transport winds.....Northeast 6 to 7 mph.
Smoke dispersal.....Poor (5300 knot-ft).
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
Eye level winds.....Northeast winds up to 4 mph late in the
afternoon becoming light.
TIME (EST) 3PM 4PM 5PM
Sky (%).........16 27 45
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0
Temp............53 51 49
RH..............66 74 80
20 FT wind dir..NE NE E
20 FT wind spd..6 5 3
20 FT wind gust.8 7 7
Eye lvl wnd dir.NE NE E
Eye lvl wnd spd.4 3 2
Eye lvl wnd gst.5 4 4
Mix hgt (kft)...1.4 1.3 1.1
Transp wind dir.NE NE NE
Transp wind spd.7 6 6
Haines index....3 2 2
Vrate kt-ft/1K..9 6 5
Ventrate Cat....PR PR PR
.TONIGHT...
Sky/weather.........Mostly cloudy. Patchy fog. Chance of rain early
in the morning.
CWR.................0 percent.
Min temperature.....Around 41.
Max humidity........96 percent.
Wind (20 ft)........Light winds becoming northeast 5 to 8 mph after
midnight.
Mixing height.......400 ft AGL.
Transport winds.....East 6 to 15 mph increasing to around 16 mph
early in the morning.
Smoke dispersal.....Fair (18100 knot-ft) early in the evening
decreasing to poor (2100 knot-ft) late in the
night.
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
Eye level winds.....Light winds becoming northeast up to 5 mph
after midnight.
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........55 62 75 70 72 79 84 87 91 93 93 96
Weather cov..... PTY CHC CHC
Weather type.... FOG RN RN
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............46 45 44 44 44 44 44 45 45 45 45 45
RH..............86 89 93 93 96 93 93 96 93 89 93 93
20 FT wind dir..E E NE NE NE NE NE NE NE NE NE NE
20 FT wind spd..3 3 3 2 2 3 5 5 6 7 8 8
20 FT wind gust.8 9 9 8 8 9 9 10 12 13 14 15
Eye lvl wnd dir.E E NE NE NE NE NE NE NE NE NE NE
Eye lvl wnd spd.2 2 2 1 1 2 3 3 4 4 5 5
Eye lvl wnd gst.5 5 5 5 5 5 5 6 7 8 8 9
Mix hgt (kft)...0.9 0.7 0.4 0.4 0.9 0.4 0.5 0.9 0.5 0.4 1.3 0.7
Transp wind dir.E E E E E E E E E E E E
Transp wind spd.6 6 6 7 7 8 10 12 13 15 16 16
Haines index....2 2 2 2 2 2 2 2 2 2 3 3
Vrate kt-ft/1K..4 4 2 3 5 3 5 10 5 6 18 10
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
.THURSDAY...
Sky/weather.........Cloudy. Chance of rain early in the morning.
Rain likely late in the morning, then rain in
the afternoon. Patchy fog in the late morning
and afternoon.
CWR.................0 percent increasing to 100 percent.
Max temperature.....Around 50.
Min humidity........89 percent.
Wind (20 ft)........Northeast winds 9 to 16 mph. Gusts up to 28 mph
through early afternoon.
Mixing height.......2000 ft AGL.
Transport winds.....East 16 to 25 mph.
Smoke dispersal.....Poor (11000 knot-ft) early in the morning
increasing to good (39100 knot-ft) in the
afternoon.
Haines Index........3 or very low potential for large plume
dominated fire growth.
Eye level winds.....Northeast winds 5 to 10 mph. Gusts up to 28 mph
through early afternoon.
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........97 95 95 97 97 98 97 100 100 100 100 100
Weather cov.....CHC CHC CHC LKY LKY LKY DEF DEF DEF DEF DEF DEF
Weather type....RN RN RN RN RN RN RN RN RN RN RN RN
Tstm cov........
CWR.............0 100 100 100 100 100 100 100 100 100 100 100
Temp............45 45 46 46 47 48 48 48 48 48 48 48
RH..............93 93 96 100 96 93 93 96 89 96 93 93
20 FT wind dir..NE NE NE NE NE NE NE NE NE NE NE E
20 FT wind spd..9 10 9 9 12 13 13 14 14 15 15 16
20 FT wind gust.16 18 20 21 23 24 25 25 26 26 28 26
Eye lvl wnd dir.NE NE NE NE NE NE NE NE NE NE NE E
Eye lvl wnd spd.5 6 5 5 7 8 8 8 8 9 9 10
Eye lvl wnd gst.10 11 12 13 14 14 15 15 16 16 17 16
Mix hgt (kft)...0.8 1.4 1.7 1.9 2.0 1.9 1.6 1.7 1.5 1.5 1.2 0.9
Transp wind dir.E E E E E E E E E E E E
Transp wind spd.16 17 20 22 22 24 23 25 25 25 25 24
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
Vrate kt-ft/1K..11 21 28 37 38 39 32 37 34 34 27 20
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
$$
Forecaster...BRW
Requested by...Deputy Graham Rowe
Type of request...WILDFIRE
.TAG 2426959.4/BOX
.DELDT 11/20/24
.FormatterVersion 2.0.0
.EMAIL growe@nafd.us