Spot Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
Versions:
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142
FNUS71 KGYX 141810
FWSGYX
Spot Forecast for Rattlesnake...USDA FS
National Weather Service Gray ME
210 PM EDT Fri Aug 14 2026
Forecast is based on forecast start time of 1400 EDT on August 14.
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...
Good afternoon. Partly sunny and dry weather is expected this
afternoon with northwest winds occasionally gusting 15 to 20 mph.
RH is expected to be in the lower 40s this afternoon with
excellent smoke dispersal to due high mixing heights and brisk
transport winds. For tonight, winds will become light toward
sunset, and excellent RH recovery is expected overnight.
.REST OF TODAY...
Sky/weather.........Mostly sunny (35-45 percent).
CWR.................0 percent.
Chance of thunder...2 percent.
Max temperature.....Around 76.
Min humidity........42 percent.
Dewpoint............49.
Max apparent temp...74.
Wind (20 ft)........Northwest winds 7 to 9 mph with
gusts 15-20 mph at times this
afternoon.
Mixing height.......6000 ft AGL.
Transport winds.....Northwest around 20 mph.
Smoke dispersal.....Excellent (92700 knot-ft).
LVORI...............1.
ADI.................105.
CEILING (KFT).......5.6.
TIME (EDT) 2PM 3PM 4PM 5PM
Sky (%).........40 43 45 49
Weather cov.....
Weather type....
Tstm cov........NO NO NO NO
CWR.............0 0 0 0
Chc of thdr (%).0 0 0 0
Temp............74 73 73 72
Dewpoint........50 49 49 49
RH..............43 42 43 44
Aparnt tmp (F)..74 73 73 72
20 FT wind dir..NW NW NW NW
20 FT wind spd..8 8 8 8
20 FT wind gust.16 18 17 16
Mix hgt (kft)...5.9 6.0 5.8 5.5
Transp wind dir.NW NW NW NW
Transp wind spd.20 20 20 20
LVORI...........1 1 1 1
ADI.............105 105 105 105
Vrate kt-ft/1K..100 102 99 93
Ventrate Cat....GD VGD GD GD
Ceiling (kft)...5.6 5.6 5.6 5.6
.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent). Patchy fog after
3 am.
CWR.................0 percent.
Chance of thunder...2 percent.
Min temperature.....Around 47.
Max humidity........100 percent.
Dewpoint............50.
Max apparent temp...70.
Wind (20 ft)........Northwest winds around 6 mph early in the
evening becoming light.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 9 to 17 mph decreasing to 6 to 7 mph
in the late evening and overnight.
Smoke dispersal.....Excellent (62400 knot-ft) early in the evening
decreasing to poor (2100 knot-ft) late in the
night.
LVORI...............5.
ADI.................101 decreasing to 7.
CEILING (KFT).......12 increasing to 25.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........38 13 14 9 3 3 5 9 9 26 28 26
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............70 67 64 60 57 55 54 52 51 49 49 49
Dewpoint........49 50 51 52 52 52 52 51 51 49 49 49
RH..............47 54 63 75 83 90 93 96 100 100 100 100
Aparnt tmp (F)..70 67 64 60 57 55 54 52 51 49 49 49
20 FT wind dir..NW NW NW NW NW W W W W W NW NW
20 FT wind spd..7 5 3 3 2 2 2 2 2 2 2 2
20 FT wind gust.14 9 7 7 5 5 5 5 5 5 5 5
Mix hgt (kft)...4.2 0.9 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW NW NW NW NW NW NW NW NW NW NW NW
Transp wind spd.17 12 9 7 7 6 6 6 7 6 7 6
LVORI...........1 2 3 3 5 6 8 9 9 9 9 9
ADI.............101 11 5 4 4 3 3 3 3 3 3 3
Vrate kt-ft/1K..62 9 4 3 3 2 2 2 3 2 3 2
Ventrate Cat....GD PR PR PR PR PR PR PR PR PR PR PR
Ceiling (kft)...12 19 25 25 25 25 25 25 25 25 25 25
$$
Forecaster...COMBS
Requested by...E Myers
Type of request...WILDFIRE
.TAG 2619700.0/GYX
.DELDT 08/14/26
.FormatterVersion 2.0.0
.EMAIL NHNECC@firenet.gov