Spot Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
339
FNUS71 KGYX 250839
FWSGYX
Spot Forecast for Maine TREX 2025...The Nature Conservancy
National Weather Service Gray ME
439 AM EDT Thu Sep 25 2025
Forecast is based on ignition time of 0900 EDT on September 25.
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.
Fog and drizzle early this morning will transition to steady rain
showers near ignition time. Showers will persist through the day
and may be heavy at times. An isolated thunderstorm moving over
the burn area during the afternoon can not be ruled out. These
conditions will keep RH values in the 90 to near 100 percent
range, and the high temperature limited to around 70F. Showers
continue into tonight, tapering off around 2 AM. Drier weather
returns with warmer temperatures for Friday.
.REST OF TODAY...
Sky/weather.........Cloudy (90-100 percent). Showers and isolated
thunderstorms.
CWR.................100 percent.
Chance of thunder...23 percent.
Max temperature.....Around 71.
Min humidity........90 percent.
Dewpoint............64.
Max apparent temp...69.
Wind (20 ft)........Southeast winds 6 to 7 mph. Gusty and erratic
winds expected near thunderstorms.
Mixing height.......800 ft AGL.
Transport winds.....Southeast 15 to 16 mph shifting to the south
around 15 mph late in the afternoon.
Smoke dispersal.....Poor (7800 knot-ft).
LVORI...............5.
ADI.................17.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........91 91 91 95 95 95 95 95 95
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RW RW RW RW RW RW RW RW RW
Tstm cov........ISO ISO ISO ISO ISO ISO ISO ISO ISO
CWR.............100 100 100 100 100 100 100 100 100
Chc of thdr (%).20 20 20 20 20 20 20 20 20
Temp............63 64 65 66 67 68 69 68 69
Dewpoint........63 64 65 65 66 66 66 66 66
RH..............100 100 100 97 97 93 90 93 90
Aparnt tmp (F)..63 64 65 66 67 68 69 68 69
20 FT wind dir..E SE SE SE SE SE SE SE SE
20 FT wind spd..7 7 8 8 9 9 9 9 9
20 FT wind gust.14 15 15 16 17 17 18 18 18
Mix hgt (kft)...0.7 0.7 0.8 0.7 0.7 0.8 0.8 0.7 0.6
Transp wind dir.E SE SE SE SE S S S S
Transp wind spd.15 15 15 15 15 15 15 16 15
LVORI...........5 5 5 5 5 5 4 5 5
ADI.............16 16 16 16 16 17 17 18 16
Vrate kt-ft/1K..10 10 10 10 10 11 11 10 8
Ventrate Cat....PR PR PR PR PR PR PR PR PR
.TONIGHT...
Sky/weather.........Cloudy (90-100 percent). Showers in the
evening. Isolated thunderstorms through the
night. Scattered showers overnight.
CWR.................100 percent decreasing to 85 percent early in
the evening.
Chance of thunder...23 percent.
Min temperature.....Around 61.
Max humidity........100 percent.
Dewpoint............65 decreasing to 62 after 3 am.
Max apparent temp...68.
Wind (20 ft)........South winds 5 to 7 mph shifting to the
southwest around 5 mph overnight. Gusty and
erratic winds expected near thunderstorms in
the evening and overnight.
Mixing height.......500 ft AGL.
Transport winds.....South 14 to 18 mph shifting to the west around
14 mph after 3 am.
Smoke dispersal.....Poor (5700 knot-ft).
LVORI...............7.
ADI.................16 decreasing to 10 late in the evening.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........95 95 95 95 95 95 91 91 91 91 91 91
Weather cov.....DEF DEF DEF LKY LKY LKY SCT SCT SCT SCT SCT SCT
Weather type....RW RW RW RW RW RW RW RW RW RW RW RW
Tstm cov........ISO ISO ISO ISO ISO ISO ISO ISO ISO NO NO NO
CWR.............100 100 90 90 90 90 90 90 90 90 90 90
Chc of thdr (%).20 20 20 20 20 20 20 20 10 10 10 0
Temp............68 67 67 66 66 66 65 64 64 63 62 63
Dewpoint........67 66 66 65 65 66 65 64 64 63 62 63
RH..............97 97 97 97 97 100 100 100 100 100 100 100
Aparnt tmp (F)..68 67 67 66 66 66 65 64 64 63 62 63
20 FT wind dir..S S S S S S S SW SW SW W W
20 FT wind spd..8 8 7 7 7 6 6 6 6 6 6 6
20 FT wind gust.18 17 17 17 17 15 14 14 14 14 14 13
Mix hgt (kft)...0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6
Transp wind dir.S S S S S SW SW SW SW SW W W
Transp wind spd.18 17 18 16 16 15 14 14 14 14 14 14
LVORI...........5 5 6 6 6 8 8 8 8 8 8 8
ADI.............20 15 12 11 11 10 9 9 9 9 9 9
Vrate kt-ft/1K..10 8 8 7 7 7 6 6 6 7 7 7
Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR
.FRIDAY...
Sky/weather.........Mostly sunny (30-40 percent).
CWR.................85 percent decreasing to 0 percent early in the
morning.
Chance of thunder...5 percent.
Max temperature.....Around 81.
Min humidity........58 percent.
Dewpoint............64.
Max apparent temp...82.
Wind (20 ft)........West winds around 5 mph.
Mixing height.......3600 ft AGL.
Transport winds.....West 10 to 14 mph.
Smoke dispersal.....Poor (4000 knot-ft) early in the morning
increasing to good (43800 knot-ft) in the
afternoon.
LVORI...............7 early in the morning.
ADI.................11 early in the morning.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........47 47 47 47 47 47 25 25 25 25 25 25
Weather cov.....
Weather type....
Tstm cov........NO NO NO NO NO NO NO NO NO NO NO NO
CWR.............90 90 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 10 10 10 10 10 10 0 0 0 0
Temp............62 62 64 69 72 75 77 79 80 79 78 77
Dewpoint........62 62 64 66 66 66 65 65 64 64 63 63
RH..............100 100 100 90 81 74 67 62 58 60 60 62
Aparnt tmp (F)..62 62 64 69 72 75 77 79 82 79 78 77
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..6 6 6 6 6 6 6 6 6 6 6 6
20 FT wind gust.13 12 12 13 13 13 13 13 13 13 13 12
Mix hgt (kft)...0.4 0.5 0.7 0.9 1.2 2.1 2.7 3.2 3.6 3.2 2.8 2.4
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.10 10 13 14 13 12 13 14 14 14 14 13
LVORI...........7 7 M M M M M M M M M M
ADI.............11 11 M M M M M M M M M M
Vrate kt-ft/1K..4 4 7 11 13 21 30 37 44 39 33 27
Ventrate Cat....PR PR PR PR PR PR PR PR FR PR PR PR
$$
Forecaster...BARON
Requested by...Jon Bailey
Type of request...PRESCRIBED
.TAG 2522481.0/GYX
.DELDT 09/25/25
.FormatterVersion 2.0.0
.EMAIL jbailey@tnc.org