Tuesday, December7, 2021
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Marine Weather and Tides
Littlejohn Island, ME

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:59AMSunset 4:03PM Tuesday December 7, 2021 7:47 PM EST (00:47 UTC) Moonrise 11:39AMMoonset 8:41PM Illumination 15% Phase: Waxing Crescent; Moon at 4 days in cycle
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.
Marine Forecasts
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ANZ153 Casco Bay- 700 Pm Est Tue Dec 7 2021
Tonight..NW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft, subsiding to 1 to 2 ft after midnight.
Wed..NE winds 10 to 15 kt. Seas 1 to 2 ft. Snow likely. Vsby 1 to 3 nm.
Wed night..N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Snow. Vsby 1 to 3 nm.
Thu..NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of snow showers in the morning with vsby 1 to 3 nm.
Thu night..N winds 5 to 10 kt, becoming ne after midnight. Seas around 2 ft. A chance of snow showers after midnight with vsby 1 to 3 nm.
Fri..SE winds 5 to 10 kt, becoming S with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of snow showers in the morning. A chance of showers. Vsby 1 to 3 nm.
Fri night..SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers in the evening, then rain likely after midnight.
Sat..S winds 10 to 15 kt. Seas 2 to 4 ft. Rain.
Sat night..SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Showers.
Sun..NW winds 10 to 15 kt. Seas 3 to 5 ft. Showers.
Sun night..W winds 10 to 15 kt. Seas 2 to 4 ft.
ANZ100 700 Pm Est Tue Dec 7 2021
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure overhead will continue to move offshore tonight. An area of low pressure will track toward the region Wed. High pressure crests the waters Thursday night. Southerly winds increase ahead of an approaching front Saturday. This front will be slow to cross the east coast this weekend, clearing up Sunday evening.


7 Day Forecast for Marine Location Near Littlejohn Island, ME
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location: 43.78, -70.08     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 080003 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 703 PM EST Tue Dec 7 2021

SYNOPSIS. Low pressure passing well offshore is expected to produce mainly light snow across the coastal plain Wednesday into Wednesday night, with some losers and winners in terms of snowfall totals. Warm southwest flow returns by the weekend bringing a significant warming trend and increasing chances for rain and some mountain snow as a frontal boundary gradually passes.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/. 7 PM Update . No changes to the going forecast at this time as sky cover, PoP, and temperatures remain on track.

Previously .

Sfc high is departing to our NE tonight as sfc low develops near the Delmarva. This will enhance pres gradient and allow ENE flow to develop overnight near the sfc. But given the placement of the high this evening, should see most places decoupling before that flow develops. This will allow good rad cooling in some spots in the N and E zones, that stay clear for most of the night. Further S, will see increasing clouds from that system to our S slowly advance N and W across the CWA. This will allow lows to vary from around 10 in parts of the mtns to the low to mid 20s along the coast and in srn NH. Weakening upper level low over the great lakes will move east as well. and may see some SHSN break out around daybreak in the S and W zones as these system interact, but any accumulating snow will hold off until around or after daybreak.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH WEDNESDAY NIGHT/. Intensifying low passes well to our S and on Wed and Wed night, and the only impact will be some snow from that system. Most of the snow will be the result of the interaction between that low and a weaker one to our N. Although forcing is weak, and gets weaker as you move north, think there's enough there to give most place at least an inch or two of snow. which will start in the S and the morning and work its way N and E during the afternoon. The question, and lower confidence part of the forecast, is the possibility of inverted trough associated with the interaction of the two systems. Over the last several model runs, there has been very limited agreement on where and exactly when that trough might set up. It does stand to reason that the presence of the inverted will bring highs amounts of snow closer to the coast, and model blended QPF does bear this out. Also there's a slightly higher chance of more snow toward the mid- coast, but even tha's not something to bank on. So for now, look for a general 1-3" across the area, with best chance for higher amounts on the coastal plain, with maybe a few spots reaching 4 inches. If that inverted trough develops and produces some banding, then we might need an advisory for some areas of the coast. The snow should begin to wind down from W-E after midnight Wed night.

As for temps, highs will be limited to the 20s across inland areas outside of srn NH, with low 30s mainly there and along the ME coast. Seacoast NH may warm into the mid 30s, and could see a little rain mix in Wed afternoon. Lows drop into the teens and low 20s late Wed night.

&

LONG TERM /THURSDAY THROUGH MONDAY/. Overview . An amplified jet stream pattern drives an active series of synoptic events this week. Ridging builds in behind an exiting trough Thursday, bringing warming temperatures through the weekend. A warm front passing Friday could bring mixed precip to the area before widespread rain moves in Saturday as a cold front pushes out to the east Sunday. Dry, above freezing temperatures return for early next week.

Details . As low pressure moves east offshore to the North Atlantic Thursday, skies will clear up midday as drier air briefly mixes in, allowing temperatures to rise into the 30's south of the mountains. This setup will also allow temperatures to cool into the teens and low 20's with regions north of the mountains reaching into single digits.

A shift to southerly flow moves in Friday as a warm front passes overnight into Saturday, marking a transition to warmer conditions through the weekend. The transition to warm air will be tricky as the dense cool, dry air tends to be stubborn in giving way to the warm air, creating a classic cold air damming setup with high pressure over the Canadian Maritimes. The GFS and Canadian still capture this the best, with the Canadian holding onto freezing surface temperatures through 06z Saturday. Recent model runs show more agreement on the chance of precip over the CWA Friday afternoon as the warm front approaches. Warm air moving in aloft with onshore southerly flow, combined with possible cold air damming could create a mixed precip event which will be better understood as mesoscale models start to capture this timeframe.

Temperatures continue to rise Saturday with highs well above normal in the 50's as low pressure tracks just north of the Great Lakes, following the St. Lawrence. Widespread rain starts moving in Saturday ahead of the trailing cold front with a possible brief period of snow on the backside of the cold front as temperatures cool off quickly behind the front. Guidance shows the front passing midday Sunday with some models showing some lingering showers into Sunday evening, especially up north.

Dry conditions return for early next week as ridging aloft builds in, bringing highs into the 40's for regions south of the mountains.

LONG TERM /THURSDAY THROUGH TUESDAY/.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/. Short Term . VFR expected through overnight. Snow and low cigs will reduce vis to IFR to MVFR starting tin the S Wed morning and shifting N into the afternoon. Flight restriction linger through the evening, but will start to clear at NH terminals after midnight.

Long Term . Conditions improving to VFR Thursday as snow showers end early. Ceilings lower again late Thursday night with a period of light snow possible early Friday. Conditions briefly improve Friday afternoon then widespread showers and rain arrive late Friday night. Periods of rain continue through Saturday night, then gradually improving conditions late in the weekend and early next week.

MARINE. Short Term . SCA now only in effect through this evening for open waters E of Casco Bay and mainly for seas of 5-7 ft, which will continue to subside overnight.

Long Term . Seas fall below 5ft as high pressure builds in Thursday. tranquil conditions will last through early Saturday, then winds and seas build into the afternoon ahead of the next storm system. SCA conditions are likely by late Saturday with gales possible Saturday night. SCA conditions likely linger though the end of the weekend behind the passing cold front.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 1 AM EST Wednesday for ANZ150-152.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 12 mi149 min 47°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 18 mi27 min WNW 16G19 38°F 51°F1020.5 hPa19°F
44032 - Buoy E0104 - Central Maine Shelf 39 mi103 min NW 12G16 38°F 6 ft1020.6 hPa
WEXM1 - Wells Reserve, ME 39 mi47 min W 1.9 34°F 13°F
WELM1 - 8419317 - Wells, ME 41 mi119 min WNW 2.9G5.1 36°F 48°F1021.1 hPa
44030 - Buoy B0102 - Western Maine Shelf 45 mi103 min W 14G16 40°F 51°F2 ft1020.4 hPa

Wind History for Wells, ME
(wind in knots)    EDIT      (on/off)   Help
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1
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-12
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-12
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This dayS14
G18
S12
G17
SW12
G21
NW14
G20
W20
G31
W17
G25
NW17
G25
NW11
G20
W11
G17
W13
G18
W6
G10
W10
G13
W7
G12
NW9
G14
NW14
G22
NW14
G25
NW10
G13
W8
G15
NW4
W3
NW2
G5
NW2
1 day
ago
N4
NW2
SE9
G13
SE14
SE14
G18
S17
G22
S20
S16
G22
S20
G25
S17
G22
S15
G20
SE14
SE9
G12
SE2
S2
S13
G16
S8
N5
N4
SW15
G23
S16
G22
SW22
S21
G27
SW21
G26
2 days
ago
SW6
G10
W6
G12
W8
G11
W6
G10
W4
W4
W7
G11
NW4
G7
W4
G8
NW3
NW2
W2
W3
W4
W5
G8
W4
G8
NW6
G9
W6
W4
G8
NW2
G5
W2
N4
N3
N4

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME15 mi56 minWSW 410.00 miFair34°F13°F42%1020.9 hPa
Auburn-Lewiston, ME22 mi51 minN 010.00 miFair27°F17°F66%1021.6 hPa
Wiscasset Airport, ME23 mi54 minN 010.00 miFair30°F21°F69%1021.2 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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G22
S11S9W20
G28
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W15
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SW5SW8SW7W11W11NW9NW8NW6N8NW13W9W6W4W5W4
1 day agoNE3N4N3SE6E6SE10SE8SE11
G18
SE10S13
G21
SE10SE6E4E4NW6NW6NW5W60NW36S13
G20
S15
G26
S12
G21
2 days agoSW5SW3W5W6W3W5W4SW6W5W4W300SW3SW6W10W11W9W9NW7NW3000

Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine
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Chebeague Point
Click for Map
Tue -- 12:45 AM EST     9.74 feet High Tide
Tue -- 06:33 AM EST     -0.23 feet Low Tide
Tue -- 07:00 AM EST     Sunrise
Tue -- 10:39 AM EST     Moonrise
Tue -- 12:54 PM EST     11.21 feet High Tide
Tue -- 04:03 PM EST     Sunset
Tue -- 07:20 PM EST     -1.41 feet Low Tide
Tue -- 07:41 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Chebeague Point, Great Chebeague Island, Maine, Tide feet
12
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9.4
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9.7
2
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8.7
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6.7
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3.9
5
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1.5
6
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-0
7
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-0.1
8
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1.1
9
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3.4
10
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6.3
11
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8.9
12
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10.7
1
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11.2
2
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10.4
3
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8.4
4
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5.4
5
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2.3
6
pm
-0.2
7
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-1.3
8
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-1.1
9
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0.4
10
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2.8
11
pm
5.5


Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Tue -- 01:32 AM EST     1.15 knots Max Flood
Tue -- 05:23 AM EST     -0.00 knots Slack
Tue -- 06:59 AM EST     Sunrise
Tue -- 07:31 AM EST     -1.00 knots Max Ebb
Tue -- 10:38 AM EST     Moonrise
Tue -- 10:47 AM EST     0.00 knots Slack
Tue -- 01:45 PM EST     1.22 knots Max Flood
Tue -- 04:01 PM EST     Sunset
Tue -- 05:37 PM EST     -0.00 knots Slack
Tue -- 07:39 PM EST     Moonset
Tue -- 08:00 PM EST     -1.23 knots Max Ebb
Tue -- 11:42 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Upper Hell Gate (Sasanoa River, Maine) Current, knots
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0.7
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1.1
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1.1
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0.8
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0.3
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-0.4
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-0.9
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-0.9
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-0.7
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-0.3
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0.1
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0.7
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1.1
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1.2
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1.1
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0.8
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0.4
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-0.3
7
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-1
8
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-1.2
9
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-1.1
10
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-0.7
11
pm
-0.4


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