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Marine Weather and Tides Littlejohn Island, ME Version 3.4

NOTICE 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

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Sunrise 5:40AM

Sunset 7:48PM

Thursday August 13, 2020 1:34 PM EDT (17:34 UTC)

Moonrise 12:16AM

Moonset 3:34PM

Illumination 27%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Littlejohn Island, ME

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Area Discussion for - Gray/Portland, ME

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FXUS61 KGYX 131514 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 1114 AM EDT Thu Aug 13 2020

SYNOPSIS. It'll be another warm day today, but with much less humidity. The temperature will cool off at night and then gradually cool through the weekend as high pressure builds into the Canadian Maritimes. A slow moving frontal system could bring rain early next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Update . Temps warming quickly along the coastal plain and so I have tweaked readings up and more quickly before sea breezes are expected to form this afternoon.

ORIGINAL DISCUSSION . High pressure to our north will remain in control of the weather today with plenty of sunshine and light winds expected. Last night's GYX sounding revealed a subsidence inversion around 700MB which has been lowering with each sounding the past few days. Expect it will be even a bit lower this morning and within range for us to mix to this afternoon. While we won't mix out this inversion, we will mix into the bottom of it. This leads us to believe that temperatures should warm up into the 87-88F range at sea level and level off right about there as any further heating would force mixing through the whole column. Within this subsidence inversion exists some very dry air, and we expect that as we mix deeply today we will tap into this drier air and see dewpoints fall into the low 50s. Typically it's hard for dewpoints to fall lower than the 50s this time of year due to foliage, but recent dry weather could challenge that. Have lowered forecast dewpoint values from guidance and favored the CMC as it tends to handle mix down scenarios better.

With light winds expected we should see a sea breeze develop along the coast this afternoon. It will be a bit delayed, though, considering water temperatures are near their annual peak and thus the temperature gradient will not be as high as earlier in the season. However, we should see this bring a shift in wind direction, slight decrease in temperature, and increase in dewpoint to the entire coastline this afternoon.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/. Mostly calm conditions overnight with dry air in place will lead to a good cool down for most. 50s should be widespread with some northern valleys dropping into the 40s. Warmer southern towns may still hold in the 60s.

Friday will be another nice day but several degrees cooler than today. Still should see widespread temperatures in the 80s. An upper trough drops south through the Canadian Maritimes extending westward into northern New England, but the lack of moisture will make it difficult for showers to form.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/. The ensemble and deterministic model solutions remain in good agreement on the long wave pattern through the upcoming weekend and the first half of next week. The period begins with an upper trough across New England for Saturday along with the possibility of widely scattered convection. The trough shifts offshore by late Saturday with rising heights and weak ridging for late Saturday and early Sunday. The flattening ridge is quickly replaced by an upper trough stretching from the Great Lakes through the northeast by late Sunday and the start of the new work week. A series of passing impulses and a slow-moving frontal system will bring increasingly more humid and unsettled weather to the region through the middle of next week.

AVIATION /15Z THURSDAY THROUGH MONDAY/. Short Term . VFR expected with the exception of early morning fog at Lebanon and Whitefield. Light northwest winds become variable at times today while a late sea breeze also arrives at the coast.

Long Term .

Sat - Sun . Isolated MVFR possible in -SHRA.

MARINE. Short Term . Light winds and low seas expected as high pressure is in control.

Long Term .

Sat PM - Mon . An extended period of onshore flow may produce SCA's outside the bays.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . None.



NEAR TERM . Legro

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CASM1 - 8418150 - Portland, ME	12 mi	46 min		80°F	69°F
44007 - PORTLAND 12 NM Southeast of Portland,ME	18 mi	44 min	SE 3.9 G 3.9	74°F	69°F	1 ft	1018.8 hPa (-0.4)
44032 - Buoy E0104 - Central Maine Shelf	39 mi	150 min	WSW 1.9 G 3.9	74°F	71°F	1 ft	1017.8 hPa
WEXM1 - Wells Reserve, ME	39 mi	94 min	ESE 4.1	82°F				64°F
WELM1 - 8419317 - Wells, ME	41 mi	46 min	SSE 5.1 G 6	78°F	70°F		1019.1 hPa
44030 - Buoy B0102 - Western Maine Shelf	45 mi	90 min	ENE 1.9 G 1.9			1 ft

Wind History for Wells, ME

(wind in knots)    EDIT      (on/off)   Help

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Portland, Portland International Jetport, ME	15 mi	43 min	S 6	10.00 mi	Mostly Cloudy	86°F	57°F	39%	1018.8 hPa
Auburn-Lewiston, ME	22 mi	38 min	NW 4	10.00 mi	Partly Cloudy	84°F	59°F	43%	1019.5 hPa
Wiscasset Airport, ME	23 mi	41 min	Var 3	10.00 mi	Mostly Cloudy	85°F	57°F	39%	1018.8 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)

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Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine

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Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current

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Weather Map

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GEOS Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Gray/Portland, ME (13,3,4,5)

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Ground Weather Radar Station Portland, ME

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