Spot Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
821
FNUS71 KGYX 150922
FWSGYX
Spot Forecast for Hollis Barrens Southgate...The Nature Conservancy
National Weather Service Gray ME
522 AM EDT Tue Sep 15 2026
Forecast is based on ignition time of 1000 EDT on September 15.
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.
.DISCUSSION...
High pressure will bring mostly sunny and dry weather today along
with light surface winds. Because of the light nature of the
winds, direction will likely be variable at times this morning but
is expected to become primarily out of the south to southeast by
early this afternoon. Min RH is forecast to fall into the lower
40s, and smoke dispersal is expected to only be poor to fair due
to transport winds being light. RH recovery will be excellent
tonight.
.REST OF TODAY...
Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 69.
Min humidity........42 percent.
Dewpoint............45.
Max apparent temp...69.
Wind (20 ft)........Light winds becoming south 5 to 6 mph late in
the afternoon.
Mixing height.......4000 ft AGL.
Transport winds.....East around 3 mph shifting to the south in the
afternoon.
Smoke dispersal.....Poor (6800 knot-ft) early in the morning
increasing to fair (17900 knot-ft) in the
afternoon.
LVORI...............3.
ADI.................13 increasing to 26 late in the afternoon.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2 3 9 29 30 24 38 44
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............53 58 61 65 66 68 69 67
Dewpoint........46 45 44 45 44 45 47 47
RH..............77 62 53 48 45 43 45 49
Aparnt tmp (F)..53 58 61 65 66 68 69 67
20 FT wind dir..E E SE S S S S S
20 FT wind spd..2 3 3 4 5 5 6 7
20 FT wind gust.5 5 6 7 9 10 12 14
Mix hgt (kft)...2.6 3.4 3.6 3.7 4.0 3.9 3.5 2.6
Transp wind dir.E SE SW S S S S S
Transp wind spd.3 2 2 3 3 5 6 8
LVORI...........4 3 2 2 2 2 2 2
ADI.............11 9 15 16 22 27 30 29
Vrate kt-ft/1K..8 7 7 11 12 16 18 18
Ventrate Cat....PR PR PR PR PR PR PR PR
.TONIGHT...
Sky/weather.........Partly cloudy (30-40 percent) then becoming
mostly cloudy (55-65 percent) then becoming
partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 47.
Max humidity........96 percent.
Dewpoint............49 decreasing to 46 after 3 am.
Max apparent temp...64.
Wind (20 ft)........South winds 5 to 6 mph early in the evening
becoming light.
Mixing height.......400 ft AGL.
Transport winds.....South 8 to 12 mph.
Smoke dispersal.....Poor (2900 knot-ft).
LVORI...............5.
ADI.................18 decreasing to 6.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........32 38 60 34 45 35 12 28 33 20 26 30
Weather cov.....
Weather type....
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............64 61 56 54 53 52 50 49 49 49 47 48
Dewpoint........48 49 51 48 48 48 48 47 47 46 46 46
RH..............56 65 83 80 83 86 93 93 93 89 96 93
Aparnt tmp (F)..64 61 56 54 53 52 49 48 48 48 46 47
20 FT wind dir..S S S S S S SW SW SW S SW S
20 FT wind spd..7 6 5 3 3 3 3 3 3 3 3 3
20 FT wind gust.14 12 9 7 7 7 7 7 7 7 7 7
Mix hgt (kft)...1.4 0.5 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.S S S S S S S S S SW SW SW
Transp wind spd.10 12 10 9 9 9 8 8 8 8 8 8
LVORI...........2 3 4 4 5 5 6 6 6 6 8 6
ADI.............18 4 7 5 5 5 4 4 4 4 4 4
Vrate kt-ft/1K..13 5 5 4 3 3 3 3 3 3 3 3
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
.WEDNESDAY...
Sky/weather.........Partly sunny (50-60 percent).
CWR.................0 percent.
Chance of thunder...1 percent.
Max temperature.....Around 79.
Min humidity........50 percent.
Dewpoint............47 increasing to 58.
Max apparent temp...79.
Wind (20 ft)........Light winds becoming southwest around 5 mph
early in the morning, then becoming light in
the late morning and afternoon.
Mixing height.......3400 ft AGL.
Transport winds.....Southwest 8 to 10 mph.
Smoke dispersal.....Poor (3300 knot-ft) early in the morning
increasing to fair (27000 knot-ft) in the
afternoon.
LVORI...............6 early in the morning.
ADI.................9 early in the morning.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51 61 47 55 72 47 56 66 41 52 53 52
Weather cov.....
Weather type....
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............47 48 53 59 63 68 72 76 77 78 79 77
Dewpoint........46 47 49 52 54 54 55 56 57 58 59 60
RH..............96 96 86 78 72 61 55 50 50 50 50 56
Aparnt tmp (F)..46 46 53 59 63 68 72 76 77 78 79 77
20 FT wind dir..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..3 5 6 5 5 5 5 3 3 3 3 5
20 FT wind gust.7 9 12 9 9 9 9 7 7 7 7 9
Mix hgt (kft)...0.4 0.5 0.8 0.9 1.4 2.0 2.3 2.8 3.2 3.2 3.4 2.3
Transp wind dir.SW SW W SW SW SW SW SW SW W W SW
Transp wind spd.9 9 10 9 9 9 10 10 9 9 9 8
LVORI...........6 6 M M M M M M M M M M
ADI.............7 11 M M M M M M M M M M
Vrate kt-ft/1K..3 4 8 7 11 16 21 26 25 26 27 16
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
$$
Forecaster...COMBS
Requested by...Jon Bailey
Type of request...PRESCRIBED
.TAG 2621813.0/GYX
.DELDT 09/15/26
.FormatterVersion 2.0.0
.EMAIL jbailey@tnc.org