Saturday, March28, 2020
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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.

Sunrise 6:25AMSunset 7:03PM Saturday March 28, 2020 8:08 PM EDT (00:08 UTC) Moonrise 8:41AMMoonset 11:20PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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- 611 Pm Edt Sat Mar 28 2020
.small craft advisory in effect from Sunday afternoon through late Sunday night...
Rest of tonight..SE winds around 5 kt. Seas 1 foot or less. A slight chance of rain and snow showers with vsby 1 to 3 nm.
Sun..SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 to 2 ft, building to 2 to 3 ft in the afternoon. Showers in the morning, then showers with a chance of sleet in the afternoon. Vsby 1 to 3 nm.
Sun night..E winds 15 to 20 kt, becoming ne 10 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Rain. Vsby 1 to 3 nm in the evening.
Mon..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 to 3 nm in the afternoon.
Mon night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain or snow likely, mainly in the evening. Vsby 1 to 3 nm.
Tue..N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. A chance of snow in the morning with vsby 1 to 3 nm.
Tue night..N winds 5 to 10 kt. Seas 2 to 3 ft.
Wed..NE winds 5 to 10 kt. Seas around 2 ft.
Wed night..N winds 5 to 10 kt. Seas 1 to 2 ft.
Thu..N winds 5 to 10 kt. Seas 1 to 2 ft.
Thu night..N winds 5 to 10 kt. Seas around 2 ft.
ANZ100 611 Pm Edt Sat Mar 28 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will move east of the waters tonight as low pressure approaches from the midwest. This low will pass to the south of our waters Sunday night into Monday. High pressure ridging will then build southward out of quebec for midweek. &&


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 282231 AAA AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 631 PM EDT Sat Mar 28 2020

SYNOPSIS. High pressure will retreat well offshore tonight. A warm front lifts north overnight, with rain arriving over southern and coastal sections by dawn and a mix of snow and rain across northern New Hampshire and interior western Maine. While a mix of snow, sleet, and some rain continues across the mountains and foothills on Sunday, the remainder of the area will see a cold rain. Colder air will begin to drain back south Sunday night . with precipitation changing to snow and sleet across much of the area with the exception of the southern third of New Hampshire and extreme southwest Maine On Monday. a light mix of rain and snow will continue with any accumulation of snow limited to mountain sections. Cool unsettled weather is then expected for much of the upcoming week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. 630 PM Update . Radar echoes are moving slowly into southern NH and SW Maine early this evening. Dew points are quite low, and not expecting any measurable precipitation for a few more hours. Moisture is slowly increasing however as the column moistens ahead of low pressure moving into NY state and Pennsylvania. Still a few more hours before light precipitation turns into steady rain or snow. Towards daybreak much of NH as well as SW ME will be seeing either snow, rain, or a mix.

Made a few changes, especially for the dew point curve overnight. Temperatures will drop the first half of the night, hold steady then gradually increase in the early morning hours as WAA increases.


Previous discussion . At 18z a 1022 millibar ridge was draped across the area. high was centered over western New England. A warm front extended from the upper Midwest to the DELMARVA. Mid and high clouds continue to spread north and east on GOES imagery and even our far northern sections should cloud over this evening. NWS Doppler Radar mosaic continued to show a large area of precipitation to the north of the warm front over upstate New York. This activity will spread east into southern and western New Hampshire by tonight where it should fall mainly as rain. Some locations mainly from the Lakes Region on north will cool enough with precipitation onset to mix with or change to snow. By dawn . the leading edge of the precipitation will extend from northern New Hampshire through extreme southwest Maine. Both deterministic and ensemble model solutions have trended slower with precipitation onset with the GFS an outlier. Lows will range from around 30 across the mountains with mid and upper 30s for the remainder.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. On Sunday . precipitation will gradually overspread the remainder of the area with a cooling column supporting rain and snow across the mountains and some sleet as a warm layer moves in aloft Elsewhere. we should see largely rain with some pockets of sleet and wet snow possible at times over the foothills Given the expected mix. there will be a wide variation of snow and sleet amounts across the northern mountains. Given later onset time and uncertainty with amounts have held on to the winter storm watch at this juncture. By tomorrow evening . colder air will begin filtering back south and we should see precipitation transition back to snow and sleet across the mountains and foothills with a mix of snow sleet and rain from central New Hampshire through much of interior southwest Maine. Outside of the mountains and foothills I expect little more then a coating by dawn on Monday . with several inches possible across mountain sections. Lows will be near 30 across the mountains with mid 30s elsewhere.

LONG TERM /MONDAY THROUGH SATURDAY/. The warm air advection regime and the first part of the weather system exists on Monday while a strong stacked low moves in to take its place. The mid level low attempts to redevelop just off the coast late Monday and Monday. Enough moisture should be available in conjunction with widespread forcing for ascent to allow for widespread precipitation Monday into Monday night. Normally with upper lows the precipitation tends to be showery, but positive advective processes in association with the redeveloping low will tend toward a more stratiform event. Snow will continue in the mountains with rain (or even a break in the precipitation) elsewhere likely transitioning to snow as Monday afternoon progresses. Low probability for even a 1-4" plowable snow event pretty far south (away from the immediate coast and southernmost NH) ending Monday night.

Otherwise, we'll have to watch for a retrograding low pressure system possibly moving our way for mid to late week.

AVIATION /22Z SATURDAY THROUGH THURSDAY/. Short Term /Through Sunday night/ . Cigs lowering to MVFR then IFR at all but /KAUG/ and /KRKD/ by 12z Sunday in RA and SN . and at /KAUG/ and /KRKD/ by 16z. SFC wind gusting up to 25 kt at coastal terminals Sunday night.

Long Term . Mainly IFR conditions expected in the mountains and foothills Monday and Monday night, transitioning to IFR Monday afternoon and night elsewhere in rain, and then snow.

MARINE. Short Term /Through Sunday Night/ . Increasing onshore flow with building seas Sunday and Sunday night with SCA conditions developing all waters Outside the bays. we cloud see a few gusts approach Gale Sunday night.

Long Term . SCA conditions continue Monday through Tuesday night, mainly for seas 5-10 feet on the outer waters.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Winter Storm Watch from Sunday morning through Monday morning for MEZ007>009. NH . None. MARINE . Small Craft Advisory from 4 PM Sunday to 6 AM EDT Monday for ANZ150>154.



NEAR TERM . Hanes SHORT TERM . Schwibs LONG TERM . Ekster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 12 mi68 min 44°F 42°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 18 mi78 min S 9.7 G 12 43°F 42°F2 ft1021.1 hPa (+0.0)38°F
44032 - Buoy E0104 - Central Maine Shelf 39 mi124 min SSW 9.7 G 9.7 42°F 42°F1 ft1020.1 hPa
WEXM1 - Wells Reserve, ME 39 mi68 min S 2.9 43°F 33°F
WELM1 - 8419317 - Wells, ME 41 mi68 min SSW 7 G 8.9 44°F 43°F1021.7 hPa (+0.0)
44030 - Buoy B0102 - Western Maine Shelf 45 mi124 min SSE 12 G 14 2 ft1022.6 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME15 mi77 minS 810.00 miMostly Cloudy44°F30°F60%1021.4 hPa
Auburn-Lewiston, ME22 mi72 minSSE 610.00 miFair45°F26°F48%1021.8 hPa
Wiscasset Airport, ME23 mi75 minSSW 310.00 miFair45°F26°F48%1021.7 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hrNW7W3W3N7W4CalmW4W5NW6W4W4N3CalmW4SW4SE12S11S10S8S6S11S9S8SW4
1 day agoSW4S3SW4S4S5SW6SW3W3W5W6NW6NW5NW12NW8
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2 days agoE11E10NE7NE7N6N6N6NE7N7NW5N6N7N8N13N10N7E74CalmSE6S8SE11S7S5

Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine
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Chebeague Point
Click for Map
Sat -- 02:04 AM EDT     9.21 feet High Tide
Sat -- 06:28 AM EDT     Sunrise
Sat -- 08:14 AM EDT     0.39 feet Low Tide
Sat -- 08:41 AM EDT     Moonrise
Sat -- 02:32 PM EDT     8.66 feet High Tide
Sat -- 07:03 PM EDT     Sunset
Sat -- 08:24 PM EDT     1.02 feet Low Tide
Sat -- 11:20 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.18.69.28.87.45.43.11.20.40.71.83.75.77.58.58.67.7642.11.11.22.23.9

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Sat -- 02:57 AM EDT     0.94 knots Max Flood
Sat -- 06:26 AM EDT     Sunrise
Sat -- 07:03 AM EDT     -0.00 knots Slack
Sat -- 08:39 AM EDT     Moonrise
Sat -- 09:13 AM EDT     -0.87 knots Max Ebb
Sat -- 12:31 PM EDT     0.00 knots Slack
Sat -- 03:20 PM EDT     0.84 knots Max Flood
Sat -- 07:02 PM EDT     Sunset
Sat -- 07:24 PM EDT     -0.00 knots Slack
Sat -- 09:32 PM EDT     -0.79 knots Max Ebb
Sat -- 11:19 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.40.80.90.80.60.40-0.5-0.9-0.7-0.4-0.10.20.60.80.80.60.40.2-0.3-0.7-0.7-0.4

Weather Map
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wmap_A
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
Wind Forecast for Gray/Portland, ME (20,4,5,8)
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Ground Weather Radar Station Portland, ME
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.