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Marine Weather and Tides Bowdoinham, 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 5:01AM

Sunset 8:12PM

Tuesday May 26, 2020 2:19 PM EDT (18:19 UTC)

Moonrise 8:09AM

Moonset 12:00AM

Illumination 21%

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 261245 AAB AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 845 AM EDT Tue May 26 2020

SYNOPSIS. Clouds and drizzle will continue into this morning with clearing by late morning. Temperatures will be on the rise through mid week as high pressure builds over the area. There will be a slight chance for mountain thunderstorms Wednesday afternoon. More widespread showers and thunderstorms are possible Friday into saturday as a slow moving cold front crosses the area. Drier and cooler air arrives for the second half of the weekend into early next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Stratus and fog are slowly being eroded across the area and should continue to do so this morning. Elsewhere some patchy cirrus is drifting in around the northern extent of high pressure. Beyond this, most sites are sunny this morning. Temperatures should warm into the 70s and 80s in the next few hours.

615AM UPDATE . Gave some thought to canceling the Dense Fog Advisory considering most observations are significantly above the 1/4SM criteria. However, here at the office we have been stuck in less than 1/4SM visibility for quite some time, and judging by reports of others in the area this is more common than the automated observations are showing. Thus will allow the Dense Fog Advisory to continue until expiration while acknowledging that the fog may be more patchy than widespread. Otherwise have updated the forecast to adjust hourly temperature trends based on latest observations. No other significant changes in forecast thinking.

ORIGINAL DISCUSSION . Onshore flow continues for Maine and far eastern New Hampshire. The rich moisture coming in on this flow over the cold waters has led to low clouds and fog. Expect the threat of dense fog to last for a few hours after sunrise so will continue the Dense Fog Advisory with the expectation that it can expire at 8AM.

An upper level ridge bubbles up into the Northeast US today with very warm air spilling in around the top of this ridge. This will bring some very warm temperatures to the northern part of the area today where highs in the mid 80s are expected. Further south in southern New Hampshire low 80s are expected . while the coast of Maine will take a while to shake off the clouds, keeping temperatures even cooler.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/. Although clouds are likely to break up at least somewhat during the day today, we expect them to roll back in again tonight. Low level wind flow becomes slightly more southwesterly so the area most likely to be affected by clouds and possibly more fog will be a bit further east as well. Temperatures fall off into the 50s for most, but parts of New Hampshire may stay in the 60s, buoyed by the increased moisture.

Wednesday will be even warmer than today with perhaps the peak of the warm air rotating around the top of the upper ridge. This will send temperatures into the low 90s across northern parts of the area while southern and coastal areas should top off in the 80s. With winds even more southwesterly, the cooling influence of the Gulf of Maine will again be shifted further east, protecting only the immediate Midcoast from the 80 degree warmth.

In addition to the heat, dewpoints in the mid 60s will even add a bit of a heat index making it feel slightly hotter. The combination of the heat and humidity will lead to instability in the afternoon, with a chance of showers and thunderstorms mainly in northern areas. The upper ridge remains close by, so precipitation chances are rather low. However, a subtle wave may be rotating around the northern edge of the ridge which could give just enough lift to produce a few storms over Canada and drift into northern parts of our area Wednesday afternoon.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/. Above normal heights and ridge axis will start to shift east Thursday as weak disturbances aloft move through the northern periphery of the ridge. A trough will swing through southeastern Canada late Thursday night through Saturday pushing a slow moving cold front through the region bringing showers and thunderstorms Friday. The front will be slow to exit the region with precipitation chances continuing into Saturday. High pressure will build in from the NW the second half of the weekend for cooler and drier weather into early next week.

Thursday will be very warm, although not quite as warm as Wednesday with more cloud cover and temperatures in the 80s. Moisture will be on the increase Friday ahead of the cold front with PWATS around 200 percent of normal and dewpoints climbing into the mid 60s. Highs will be in the 80s again and with the increase of moisture it will start to feel muggy.

Models continue to show decent instability ahead of the front with CAPE around 1000 J/kg, although guidance shows precipitation moving through in waves as early as Friday morning lasting into Saturday. There will be decent shear with the front with shear vectors more aligned line parallel lending towards less favorable conditions for well organized storms. Overall expect thunder with precipitation Friday, especially in the afternoon and will continue to monitor if more organized convection becomes favorable.

AVIATION /13Z TUESDAY THROUGH SATURDAY/. Short Term . LIFR conditions along the coast and much of the coastal plain of Maine this morning should disperse somewhat as the day goes on. There could be some MVFR ceilings lasting much of the day especially toward the Midcoast. Another surge of clouds and possible fog is expected this evening, this time more likely to affect eastern areas.

Long Term . Mainly VFR Thursday with increasing moisture and clouds bringing possible restrictions Thursday night. More widespread restrictions are expected Friday into Saturday morning as slow moving cold front brings SHRA with some TSRA.

MARINE. Short Term . South to southwest flow around the periphery of the Atlantic high will gradually increase in strength through Wednesday. This is not a favorable wind direction for mixing, especially considering the warm/moist air mass being advected over the still frigid waters, so for the most part we currently expect winds to remain below advisory levels.

Long Term . SW winds will gust up to 20 to 25 kts Wed-Fri ahead of an approaching cold front with seas generally 5 ft or less. The cold front will bring showers and some thunderstorms Friday into Saturday.

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



NEAR TERM . Hanes SHORT TERM . Kimble LONG TERM . Schroeter

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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		60°F	53°F
44032 - Buoy E0104 - Central Maine Shelf	35 mi	76 min	S 3.9 G 3.9	51°F	50°F	3 ft	1022 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME	36 mi	30 min	S 5.8 G 7.8	53°F	53°F	3 ft	1022.4 hPa (-1.0)	53°F
44033 - Buoy F0103 - West Penobscot Bay	48 mi	76 min	S 9.7 G 9.7	50°F		2 ft	1022.1 hPa

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
Wiscasset Airport, ME	11 mi	27 min	S 8	10.00 mi	Fair	71°F	59°F	66%	1022.6 hPa
Auburn-Lewiston, ME	21 mi	24 min	S 11	9.00 mi	Fair	76°F	62°F	62%	1021.9 hPa
Augusta, Augusta State Airport, ME	22 mi	27 min	S 7 G 15	10.00 mi	Fair	78°F	61°F	56%	1021.3 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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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    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 (14,3,4,5)

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Ground Weather Radar Station Portland, ME

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