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Marine Weather and Tides Bowdoinham, 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.

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Sunrise 6:58AM

Sunset 5:51PM

Tuesday October 19, 2021 6:20 PM EDT (22:20 UTC)

Moonrise 5:45PM

Moonset 5:43AM

Illumination 99%

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 Bowdoinham, ME

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Area Discussion for - Gray/Portland, ME

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FXUS61 KGYX 191858 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 258 PM EDT Tue Oct 19 2021

SYNOPSIS. Gusty northwesterly flow today will diminish overnight as high pressure builds in for Wednesday. Above normal temperatures will hold through the end of the week with another cold front crossing the region on Friday, bringing additional showers and another cool down for next weekend.

NEAR TERM /THROUGH TONIGHT/. Low pressure over the Gulf of St. Lawrence has kept persistent Northwesterly flow across the area throughout the day. Satellite imagery reveals extensive midlevel clouds associated with the low, especially through the northern mountains where upslope showers are ongoing. Expect once again a general decreasing trend in the shower coverage after sunset. CAM guidance has generally had a poor handle on the extent of the showers, so have held onto increased Pop through this afternoon and into the evening.

Gusty NW winds, are peaking now and should decouple overnight as mixing ends, and the low slowly starts to fill to the northeast. With winds holding on for the early part of the night and clouds lingering through the east have held overnight lows near average, although again a few pockets of frost are possible.

SHORT TERM /WEDNESDAY/. High pressure will begin to build in for Wednesday. Expect some clouds to hold on in the mountains but generally sunny skies, with slightly warmer temperatures than today. Have stuck with the median for temps and kept the cloud cover up in the mountains. For Wednesday night, the clear skies and calm conditions will actually allow for colder temps despite a warmer airmass overall and expect temps in the upper 30s to low 40s to creep southwards towards the coast.

LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/. High Impact Weather Potential: Minimal.

--Pattern and Implications--

The middle and upper tropospheric pattern this afternoon shows a series of blocks . one centered over eastern Canada with the low member just north and east of the GYX forecast area which has allowed for a much cooler/more seasonable pattern across the region. The other is centered along the axis of the Rockies with an impressive swirl seen in water vapor imagery along the WY/CO border. The overall pattern evolution period will feature the current cutoff low impacting our area being booted north and east as shortwave energy dives south from Hudson Bay into the Great Lakes region . carving out another . and deeper longwave trough over the eastern United States. We'll be in between these features to start the period with temperatures again warmer than normal . but the arriving longwave from the west will bring what may be the coldest air of the fall thus far by this weekend. The primary precipitation chances will center around the transition back to a cooler airmass Thursday night and Friday Beyond this. there are some signals of an offshore low pressure system developing this weekend. While the ensemble consensus would keep direct impacts east of our region . net results would be strengthening of the northwesterly winds . assistance in driving a colder airmass into the region . and igniting mountain rain/snow showers.

--Daily Details--

Thursday - Friday: Low pressure over southern Michigan Thursday morning will move north and east through Friday . taking a path north of Northern New England. There will be a threat of showers with the advancing warm front on Thursday with the greatest threat for showers over the northern half of the area and most likely in the morning Otherwise. a mild day is likely as T9s push back above 10C which should allow most locations to push into the 60s . with a few spots over SE NH likely reaching 70. We/ll sit in the warm sector Thursday night allowing much warmer lows vs recent nights with lower to middle 50s likely south of the mountains. A weak shortwave will outpace the cold front bringing the chance for showers Thursday night through Friday morning with additional showers along the front itself likely confined to the mountains closer to the mid level low Given frontal timing. it looks like temperatures will be mild again on Friday with T9s not falling until late in the day. Depending on the evolution of showers/cloud cover . highs may again push 70 over SE NH and the coastal plain of Maine with 60s likely elsewhere. An early look at QPF from the ensembles suggests that we/ll likely remain below 0.5" everywhere so no significant impacts expected.

Saturday - Sunday: As the longwave trough to our west builds overhead . there is some agreement that it will interact with the offshore cold front to spawn an area of low pressure that will strengthen and move northeast into the Canadian Maritimes. Given the range of solutions . there is some low possibility for rain to impact the Midcoast but the most likely outcome at this range is for a seasonably cool and dry day Saturday to give way to increasing winds . somewhat lower temperatures . and some mountain rain/snow showers on Sunday as northwesterly winds strengthen in the wake of the departing low Highs look seasonable on Saturday. generally in the 50s before dropping back into the 40s in the mountains on Sunday with lower 50s holding on to the south and east.

Monday - Tuesday: While deterministic guidance solutions diverge markedly at the end of the long term period . the ensemble solutions /GEFS/EC EPS/GGEM-EPS/ generally support the idea of longwave troughing beginning to pull east of the region with a surface high cresting overhead Thus. dry conditions are favored. Given the cool airmass in place . we have the potential in this period to bring freezing temperatures to most locations that have not seen them yet with high temperatures moving back to seasonal norms as heights aloft build. Will continue to mention frost both Sunday and Monday nights given the lack of freezing temperatures thus far this fall Thus. expect highs in the 40s in the mountains and 50s to the south and east.

AVIATION /19Z TUESDAY THROUGH SUNDAY/. Short Term . Nwly flow around low pressure over the Gulf of St. Lawrence is dominating our weather. This has brought scattered cloud cover with afternoon showers to much of the area, although only along the Canadian border has any MVFR. These clouds and showers will decrease overnight with light NWly flow remaining through morning. VFR will hold through Wednesday and into Thursday as high pressure builds into the region.

Long Term /Thursday through Sunday/ . Restrictions possible in showers Thursday morning and again late Thursday night and Friday morning. VFR Friday-Saturday with some restrictions possible LEB/HIE Sunday in -SHRA. Northwesterly winds look to strengthen to 10g20kts on Sunday.

MARINE. Short Term . NWly flow continues across the Gulf of Maine as low pressure spins in the Gulf of St. Lawrence. Gusts to 30kts have been observed and will continue through this evening with an SCA still in effect for the outer waters. High pressure will build in on Wednesday with decreasing winds and seas.

Long Term /Thursday through Sunday/ . Expect winds/waves to remain below SCAs through Thursday. Winds will briefly approach SCA levels on the outer waters Thursday night before shifting westerly and then northwesterly while diminishing on Friday and Friday night with light northerly winds expected on Saturday. There is the potential for an offshore low pressure system to strengthen as it moves into the Canadian maritimes Saturday night and Sunday . which may allow NW winds to strengthen to SCA levels.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 8 PM EDT this evening for ANZ150- 152-154.

SYNOPSIS . NEAR TERM . Curtis SHORT TERM . Curtis LONG TERM . Arnott

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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	31 mi	50 min		54°F	59°F
44032 - Buoy E0104 - Central Maine Shelf	35 mi	136 min	NW 18G21	52°F	56°F	4 ft	1005.5 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME	36 mi	30 min	WNW 18G25	54°F	58°F	2 ft	1006.4 hPa	39°F
44033 - Buoy F0103 - West Penobscot Bay	48 mi	136 min	WNW 18G23	51°F	57°F	2 ft	1005.2 hPa

Wind History for Wells, ME

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Wiscasset Airport, ME	11 mi	27 min	W 3	10.00 mi	Overcast	49°F	39°F	69%	1006.8 hPa
Auburn-Lewiston, ME	21 mi	24 min	NNW 11	10.00 mi	Mostly Cloudy	48°F	33°F	56%	1008.3 hPa
Augusta, Augusta State Airport, ME	22 mi	27 min	WNW 12 G 21	10.00 mi	Overcast	49°F	35°F	59%	1006.7 hPa

Link to 5 minute data for KIWI

Wind History from IWI (wind in knots)

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Tide / Current Tables for Bowdoinham, Cathance River, Maine

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