186
FNUS71 KGYX 151229
FWSGYX
SPOT FORECAST FOR KENNEBEC HIGHLANDS VIENNA MOUNTAIN...MAINE FOREST SERVICE
NATIONAL WEATHER SERVICE GRAY ME
829 AM EDT TUE SEP 15 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 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.
HIGH PRESSURE SHIFTS OFFSHORE TODAY, WITH A LIGHT SOUTHERLY
RETURN FLOW ARRIVING THROUGH LATE MORNING AND EARLY AFTERNOON. A
SEA BREEZE WILL LIKELY ENHANCE THESE WINDS LATER, WITH A FEW GUSTS
UP TO 15 MPH. THE RELATIVELY LIGHT WINDS WILL MEAN WEAKER MIXING,
KEEPING MOST OF THE DRY AIR ALOFT. RH VALUES WILL THEREFORE REMAIN
IN THE LOWER 40S TODAY.
CLOUDS INCREASE AND SLOWLY LOWER TONIGHT AS STRONG INVERSION
SETTLES IN AROUND 7PM. EXPECT GREAT RH RECOVERY TONIGHT, WITH
CLOUDS A BIGGER FACTOR ON WEDNESDAY. DESPITE THE CLOUDS, IT WILL
BE WARMER AND NOT AS DRY AS HIGHS PUSH INTO THE MID 70S. A COLD
FRONT WILL APPROACH THE AREA BY THE EVENING, BUT IS EXPECTED TO BE
MOSTLY DRY WITH ONLY A FEW ISOLATED SHOWERS.
REST OF TODAY
SKY/WEATHER.........SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........43 PERCENT.
DEWPOINT............43.
MAX APPARENT TEMP...66.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......3700 FT AGL.
TRANSPORT WINDS.....NORTHEAST 3 TO 5 MPH SHIFTING TO THE SOUTH 3 TO
8 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR (6300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (21500 KNOT-FT) IN THE
AFTERNOON.
LVORI...............2.
ADI.................14 INCREASING TO 35.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........1 2 5 9 18 31 38 43 44
WEATHER COV.....
WEATHER TYPE....
TSTM COV........NO NO NO NO NO NO NO NO NO
CWR.............0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0
TEMP............52 56 59 61 64 65 66 66 65
DEWPOINT........44 42 42 42 43 43 43 43 44
RH..............74 59 53 49 46 45 43 43 46
APARNT TMP (F)..52 56 59 61 64 65 66 66 65
20 FT WIND DIR..NE E SE S S S S S S
20 FT WIND SPD..5 3 2 2 3 3 5 6 6
20 FT WIND GUST.8 6 3 5 6 7 8 10 10
MIX HGT (KFT)...1.6 2.6 3.2 3.6 3.7 3.7 3.5 3.5 3.1
TRANSP WIND DIR.NE NE S SW SW S S S S
TRANSP WIND SPD.5 3 3 5 3 3 5 6 8
LVORI...........3 2 2 2 2 2 2 1 1
ADI.............10 11 18 20 20 26 26 34 36
VRATE KT-FT/1K..6 8 10 14 11 11 14 18 22
VENTRATE CAT....PR PR PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........89 PERCENT.
DEWPOINT............46.
MAX APPARENT TEMP...63.
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 10 MPH.
SMOKE DISPERSAL.....POOR (3400 KNOT-FT).
LVORI...............4.
ADI.................10.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........41 41 66 62 40 26 34 44 22 46 35 62
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............63 60 56 54 52 52 51 51 51 51 50 51
DEWPOINT........45 47 47 46 46 46 46 46 46 46 46 47
RH..............52 62 72 74 80 80 83 83 83 83 86 86
APARNT TMP (F)..63 60 56 54 52 52 51 51 51 51 46 51
20 FT WIND DIR..S S S S S S S SW SW SW SW SW
20 FT WIND SPD..7 7 12 10 10 9 10 10 10 10 10 9
20 FT WIND GUST.12 14 20 20 20 17 18 20 20 20 20 17
MIX HGT (KFT)...0.9 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.4 0.4 0.4
TRANSP WIND DIR.S S S S S S S SW SW S SW SW
TRANSP WIND SPD.8 9 10 10 10 9 9 10 10 10 10 10
LVORI...........2 3 4 3 4 4 4 4 4 4 5 5
ADI.............13 6 9 9 7 7 7 9 7 9 7 9
VRATE KT-FT/1K..7 4 4 4 4 3 3 4 4 4 4 4
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........53 PERCENT.
DEWPOINT............49 INCREASING TO 57.
MAX APPARENT TEMP...74.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH EARLY IN THE MORNING
BECOMING LIGHT.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 12 MPH.
SMOKE DISPERSAL.....POOR (3300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (26200 KNOT-FT) IN THE
AFTERNOON.
LVORI...............5 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 (%).........75 77 43 57 55 36 38 40 33 34 36 36
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............50 51 54 57 60 64 67 71 72 73 74 73
DEWPOINT........47 47 49 51 51 52 53 54 54 55 56 57
RH..............89 86 83 80 72 65 61 55 53 53 53 57
APARNT TMP (F)..47 51 54 57 60 64 67 71 72 73 74 73
20 FT WIND DIR..SW SW SW SW S S S S SW S S S
20 FT WIND SPD..8 8 7 6 5 5 5 5 5 5 5 5
20 FT WIND GUST.16 16 14 12 9 9 9 9 9 9 9 9
MIX HGT (KFT)...0.4 0.5 0.9 1.0 1.1 1.5 1.9 2.4 2.9 3.0 2.5 1.9
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.9 9 12 9 8 8 9 9 10 9 8 8
LVORI...........5 5 M M M M M M M M M M
ADI.............11 10 M M M M M M M M M M
VRATE KT-FT/1K..3 4 9 8 8 10 15 19 26 24 17 13
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
FORECASTER...CORNWELL
REQUESTED BY...ALIESHA BLACK
TYPE OF REQUEST...PRESCRIBED
.TAG 2621857.1/GYX
.DELDT 09/15/26
.FORMATTERVERSION 2.0.0
.EMAIL ALIESHA.J.BLACK@MAINE.GOV
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