Monday, January18, 2021
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Marine Weather and Tides
Bowdoinham, ME

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:07AMSunset 4:33PM Monday January 18, 2021 9:46 AM EST (14:46 UTC) Moonrise 11:22AMMoonset 11:28PM Illumination 27% 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- 935 Am Est Mon Jan 18 2021
Today..W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain or snow showers, mainly this morning.
Tonight..NW winds 10 to 15 kt, becoming 5 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft.
Tue..NW winds 5 to 10 kt. Seas around 2 ft.
Tue night..W winds 5 to 10 kt. Seas 1 to 2 ft.
Wed..NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 to 2 ft. Scattered snow showers in the afternoon.
Wed night..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to 2 ft.
Thu..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 to 2 ft in the morning, then 1 foot or less.
Thu night..SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less, then around 2 ft after midnight.
Fri..NW winds 5 to 10 kt. Seas 1 foot or less.
Fri night..N winds around 10 kt. Seas 1 foot or less, then around 2 ft after midnight.
ANZ100 935 Am Est Mon Jan 18 2021
Synopsis for stonington me to merrimack river ma out to 25 nm.. Winds and seas continue to gradually diminish today and Tuesday. By Wednesday however, strengthening cold air advection over the waters will increase winds and then seas while low pressure passes out to sea. Another system will cross the waters late in the week.


7 Day Forecast for Marine Location Near Bowdoinham, ME
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location: 44.01, -69.9     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 181440 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 940 AM EST Mon Jan 18 2021

SYNOPSIS. A series of weak systems will cross the area this week bringing periods of clouds and chances for snow showers. The first passes today with snow showers in the mountains and mostly cloudy skies elsewhere. The next system passes Tuesday night into Wednesday and another late Thursday into Friday. High pressure builds in towards the middle of the weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 936 AM Update Disc . Snow showers continue across central and northern portions of the region per latest radar imagery, surface observations and webcams. Some of this precipitation will continue to attempt to move south, as suggested by the latest mesoscale models suggest. Have made adjustments to pops and snow totals for today. Over southern areas, some of this precipitation will fall in the form of rain showers as boundary layer temperatures remain quite mild. Have also made adjustments to sky cover as partly sunny conditions continue over southern areas as well.

720 AM Update . Latest obs and radar trends show that a pre- frontal trough has led to more widespread snow and rain shower activity than has been advertised by hi-res guidance. Have increased PoPs across the area, particularly across central Maine where snow showers will be possible through this morning.

A disturbance embedded within broad cyclonic flow aloft will cross the region today with a weak surface cold front crossing this morning. This will lead to mostly cloudy day with snow showers primarily in the mountains. Chances for snow showers decrease late this afternoon and evening as forcing moves east of the area. Favored upslope areas will see light accumulations up to a few inches with little to no accumulation expected outside of the mountains. BUFKIT soundings show a well mixed boundary layer which will allow breezy west winds to mix to the surface leading to wind gusts to 25 mph.

With a delayed arrival of cold air behind the front highs will be above normal today with temperatures in the upper 30s to low 40s along the coastal plain and in the 20s in the mountains. Skies will become mostly clear outside the mountains tonight, although winds will remain elevated enough to inhibit strong cooling. Lows will range from the single digits north to low 20s along the coast.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/. Broad troughing continues over eastern North America into midweek with our area being in between disturbances passing within this flow Tuesday. Despite more sunshine, a cooler airmass will have moved in by Tuesday morning leading to a cooler day with highs in teens north to low 30s south.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/. Overview: Dominant Nrn stream will rule the extended period thru the weekend Generally low QPF expected. with much colder temps . which is to say near normal for this time of year.

Impacts: No high impact wx anticipated thru the week . as frequent fronts from the NW keep precip showery and rather moisture starved. Next chance for some Srn stream interaction would be over the weekend . but at this time looks more likely to remain S of the forecast area SYNOPSIS.

Forecast Details: Early Wed we will be tracking the arrival of the first of at least a couple Nrn stream S/WV trofs crossing the area. A weak low pressure is forecast to form in the Great Lakes and track ESEwd. While the overall expectation is for snow showers . especially in the mtns . I cannot rule out some steadier snow in the WAA wing of the system as it slices thru central ME.

Most noticeable will be the change in air mass. Much colder temps will follow in its wake . but in the end that just returns the area to normal temps for the latter half of January.

While our Wed S/WV supports deep cyclogenesis over the NW Atlantic . another wave will approach on Fri. The pattern is fairly well set up for an inverted trof . but they are notoriously fickle. For now I have opted for a fairly broad brushed low PoP everywhere . but the likelihood is that over time this will both increase in magnitude and narrow in coverage.

One feature to wHave upped pops across the region as steady accumulating snow continues over central and northern areas in association with a trough crossing the region. Have upped snowfall forecasts for today based on current trends, radar imagery and latest observations and cams across the region. The snow over southern areas will mix with rain at times as boundary layer temperatures remain in the mid to upper 30s. atch will be upper low forming off Baja California early this week. Models forecast it to eject across CONUS and shear out by the time it reaches the East Coast. If it were to maintain some coherence that would be our best chance to get some Nrn and Srn stream interaction . but at this time ensemble guidance is bearish on any appreciable QPF system for the weekend.

AVIATION /15Z MONDAY THROUGH FRIDAY/. Short Term . Mainly MVFR with localized IFR conditions today in snow with pockets of rain south. MVFR cigs in NH lift later tonight with VFR for all into Tuesday.

Long Term . Generally widespread VFR conditions are expected to dominate the extended. Several passing S/WV trofs will bring a threat for SHSN . with local IFR conditions possible . but the threat at any one terminal is low at this time. The best chance for sustained SHSN activity will be in the vicinity of HIE where upslope enhancement is possible.

MARINE. Short Term . SW winds shifting W to NW will gust to 35 kts along the outer waters maintaining SCA conditions today into Tuesday. Winds will drop below SCA threshold in Casco bay this morning while remaining zones will be under a SCA.

Long Term . CAA over the waters by midweek will allow winds and eventually seas to increases in offshore flow. Later Thu into Fri winds and seas diminish . but low pressure passing offshore is likely to bring another round of SCA conditions for the weekend.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 4 AM EST Tuesday for ANZ150>152-154.

JC/WW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 31 mi52 min 38°F 40°F
44032 - Buoy E0104 - Central Maine Shelf 35 mi102 min WSW 23 G 31 40°F 43°F8 ft999.5 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 36 mi36 min WSW 19 G 23 39°F 42°F1000.5 hPa30°F
44033 - Buoy F0103 - West Penobscot Bay 48 mi102 min W 12 G 16 38°F 42°F3 ft999.9 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wiscasset Airport, ME11 mi53 minW 510.00 miMostly Cloudy38°F29°F70%1000.5 hPa
Auburn-Lewiston, ME21 mi50 minW 510.00 miFair36°F26°F67%1000.9 hPa
Augusta, Augusta State Airport, ME22 mi53 minW 42.50 miLight Snow Fog/Mist31°F29°F92%1000.5 hPa

Link to 5 minute data for KIWI

Wind History from IWI (wind in knots)
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SW6SW453CalmCalm43W3SW4W5SW5SW5SW5SW5W4W5
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E3S45S66SW6SW9SW7W6W7SW4SW4SW46W5
2 days agoE4E5E6--4E3E4CalmE3CalmCalmCalmCalm33Calm3CalmCalmE5E6E8
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Tide / Current Tables for Bowdoinham, Cathance River, Maine
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Bowdoinham
Click for Map
Mon -- 05:13 AM EST     5.55 feet High Tide
Mon -- 07:09 AM EST     Sunrise
Mon -- 10:21 AM EST     Moonrise
Mon -- 11:21 AM EST     0.56 feet Low Tide
Mon -- 04:31 PM EST     Sunset
Mon -- 05:24 PM EST     5.70 feet High Tide
Mon -- 10:28 PM EST     Moonset
Mon -- 11:50 PM EST     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.31.32.64.15.15.55.44.63.42.11.10.60.71.42.645.15.65.653.82.51.30.5

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Mon -- 12:31 AM EST     0.00 knots Slack
Mon -- 03:17 AM EST     0.90 knots Max Flood
Mon -- 07:08 AM EST     Sunrise
Mon -- 07:15 AM EST     -0.00 knots Slack
Mon -- 09:09 AM EST     -0.70 knots Max Ebb
Mon -- 10:21 AM EST     Moonrise
Mon -- 12:41 PM EST     0.00 knots Slack
Mon -- 03:21 PM EST     0.82 knots Max Flood
Mon -- 04:31 PM EST     Sunset
Mon -- 07:22 PM EST     -0.00 knots Slack
Mon -- 09:30 PM EST     -0.85 knots Max Ebb
Mon -- 10:27 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.20.20.70.90.90.80.60.2-0.4-0.7-0.6-0.4-0.20.10.60.80.80.70.60.2-0.4-0.8-0.8-0.6

Weather Map
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GEOS Local Image of    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.
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