Spot Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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FNUS71 KGYX 101744
FWSGYX
Spot Forecast for Grafton Farm and Woodland...NH-NHS
National Weather Service Gray ME
144 PM EDT Thu Sep 10 2026
Forecast is based on ignition time of 1000 EDT on September 11.
If conditions become unrepresentative...contact the National Weather
Service.
Please contact our office at (207) 688-3224, if you have questions
or concerns with this forecast.
Strong mixing is expected tomorrow under mostly clear skies which
is going to result in northwesterly winds gusting 15-20 mph by the
afternoon, with steady 8-10 mph background winds. A cooler
airmass begins to build into the region with high temperatures at
the burn area likely only reaching the upper 60s, so RH likely
only drops into the 40-50% range. Strong RH recoveries are
expected overnight Friday with valley fog likely to form. High
pressure moves directly overhead Saturday, so temperatures are
expected to be slightly warmer with similar RH and lighter winds.
.FRIDAY...
Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 70.
Min humidity........47 percent.
Dewpoint............48.
Max apparent temp...70.
Wind (20 ft)........Light winds.
Mixing height.......4700 ft AGL.
Transport winds.....Northwest 12 to 17 mph.
Smoke dispersal.....Good (44600 knot-ft) early in the morning
increasing to excellent (66500 knot-ft) in the
afternoon.
LVORI...............MISSING.
ADI.................MISSING.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4 7 10 11 6 7 5 3
Weather cov.....
Weather type....
Tstm cov........NO NO NO NO NO NO NO NO
CWR.............0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0
Temp............57 61 64 67 68 68 70 68
Dewpoint........49 49 49 49 48 49 49 49
RH..............75 65 58 52 49 51 47 51
Aparnt tmp (F)..57 61 64 67 68 68 70 68
20 FT wind dir..N NW NW NW NW NW NW NW
20 FT wind spd..3 5 5 5 5 5 3 3
20 FT wind gust.7 9 9 9 9 9 7 7
Mix hgt (kft)...3.7 4.4 4.5 4.4 4.7 4.7 4.5 4.2
Transp wind dir.NW NW NW NW NW NW NW NW
Transp wind spd.14 17 16 17 16 14 12 13
LVORI...........M M M M M M M M
ADI.............M M M M M M M M
Vrate kt-ft/1K..45 66 63 67 66 57 45 46
Ventrate Cat....FR GD GD GD GD FR FR FR
.FRIDAY NIGHT...
Sky/weather.........Mostly clear (0-10 percent). Patchy fog
overnight.
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 41.
Max humidity........100 percent.
Dewpoint............49 decreasing to 43 overnight.
Max apparent temp...66.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 2 to 8 mph shifting to the west
around 2 mph after 3 am.
Smoke dispersal.....Fair (14900 knot-ft) early in the evening
decreasing to poor (900 knot-ft) late in the
night.
LVORI...............MISSING.
ADI.................MISSING.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........4 7 8 9 6 5 3 3 5 5 8 8
Weather cov..... PTY PTY PTY PTY PTY PTY
Weather type.... FOG FOG FOG FOG FOG FOG
Tstm cov........NO NO NO NO NO NO NO NO NO NO NO NO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............66 61 54 51 48 47 45 43 42 41 41 41
Dewpoint........50 50 51 50 48 47 45 43 42 41 41 41
RH..............56 67 90 96 100 100 100 100 100 100 100 100
Aparnt tmp (F)..66 61 54 51 48 47 45 43 42 41 41 41
20 FT wind dir..NW NW N N N N N N N N N N
20 FT wind spd..2 2 1 1 0 0 0 0 0 0 0 0
20 FT wind gust.5 2 2
Mix hgt (kft)...2.1 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW N NW N N NW NW W W W W W
Transp wind spd.8 7 7 6 6 6 5 5 3 2 2 2
LVORI...........M M M M M M M M M M M M
ADI.............M M M M M M M M M M M M
Vrate kt-ft/1K..15 3 3 2 2 2 2 2 1 1 1 1
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
.SATURDAY...
Sky/weather.........Sunny (20-30 percent). Patchy fog early in the
morning.
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 77.
Min humidity........46 percent.
Dewpoint............41 increasing to 54.
Max apparent temp...75.
Wind (20 ft)........Light winds.
Mixing height.......3900 ft AGL.
Transport winds.....South 2 to 10 mph increasing to 9 to 12 mph
late in the afternoon.
Smoke dispersal.....Poor (800 knot-ft) early in the morning
increasing to good (39400 knot-ft) in the
afternoon.
LVORI...............MISSING.
ADI.................MISSING.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 10 7 1 6 10 15 20 25 32 38 45
Weather cov.....PTY PTY PTY
Weather type....FOG FOG FOG
Tstm cov........NO NO NO NO NO NO NO NO NO NO NO NO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............41 42 46 50 59 65 68 72 75 75 75 75
Dewpoint........41 42 47 50 52 54 54 53 53 54 55 56
RH..............100 100 96 94 79 67 60 52 46 48 49 51
Aparnt tmp (F)..41 42 48 52 59 65 68 72 75 75 75 75
20 FT wind dir..N N N SE S S S S S S S S
20 FT wind spd..0 0 0 1 1 2 2 3 3 3 3 3
20 FT wind gust. 3 5 6 7 7 7 7 7
Mix hgt (kft)...0.4 0.4 0.3 1.1 1.9 2.7 3.1 3.5 3.9 3.9 3.8 3.7
Transp wind dir.SW S S S S S S S S S S S
Transp wind spd.2 2 3 5 7 8 9 10 12 12 10 9
LVORI...........M M M M M M M M M M M M
ADI.............M M M M M M M M M M M M
Vrate kt-ft/1K..1 1 1 5 11 19 26 33 39 37 33 30
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
$$
Forecaster...BARON
Requested by...Christopher OBrien
Type of request...PRESCRIBED
.TAG 2621586.0/GYX
.DELDT 09/10/26
.FormatterVersion 2.0.0
.EMAIL christopher.s.obrien@dncr.nh.gov