Monday, July13, 2020
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Marine Weather and Tides
Thomaston, 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 5:06AMSunset 8:23PM Monday July 13, 2020 5:16 PM EDT (21:16 UTC) Moonrise 12:27AMMoonset 1:35PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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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ANZ150 Coastal Waters From Stonington, Me To Port Clyde, Me Out 25 Nm- 335 Pm Edt Mon Jul 13 2020
Rest of today..S winds 5 to 10 kt. Seas 3 to 5 ft. Scattered showers with isolated tstms. Some tstms may produce damaging winds and heavy rainfall. Vsby 1 to 3 nm.
Tonight..S winds 5 to 10 kt, becoming E after midnight. Seas 2 to 4 ft. A chance of showers. Patchy fog in the evening. Areas of fog after midnight. Vsby 1 to 3 nm, decreasing to variable to less than one quarter nm after midnight.
Tue..NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. Areas of fog in the morning. A chance of showers. Vsby variable to less than one quarter nm, increasing to 1 to 3 nm in the afternoon.
Tue night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers in the evening with vsby 1 to 3 nm.
Wed..N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft.
Wed night..NE winds around 5 kt. Seas 2 to 3 ft.
Thu..E winds 5 to 10 kt. Seas around 2 ft.
Thu night..S winds 5 to 10 kt. Seas 1 to 2 ft.
Fri..S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Fri night..S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 335 Pm Edt Mon Jul 13 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. A trough of low pressure crosses the waters by tomorrow with showers and perhaps a few gusty storms during the daytime. High pressure crosses the waters midweek, then more unsettled weather returns for the end of the week. &&


7 Day Forecast for Marine Location Near Thomaston, ME
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location: 43.97, -69.22     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 132003 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 403 PM EDT Mon Jul 13 2020

SYNOPSIS. A trough of low pressure crosses New England today and tomorrow with rounds of showers and a few storms, some containing torrential downpours. High pressure builds into the region from Canada on Wednesday. Temperatures and humidity increase toward the end of the week with showers and storms returning.

NEAR TERM /THROUGH TONIGHT/. Today, a 500mb trough extends from eastern Canada down into the Great Lakes region, shifting eastward toward New England tonight. A warm and humid airmass ahead of this wave has produced a favorable environment for showers and storms, mainly focusing on a remnant boundary over southern NH and the coastal plain today. At this hour, the initial round of storms that formed over this boundary are tracking into the waters. More convection is firing over the mountains, and skies are clearing further west in the wake of the departing storms, so expect scattered showers and storms to continue into tonight.

Shower coverage generally decreases overnight with the diurnal trend. Surface low pressure enters the Gulf of Maine tonight and deepens, drawing cooler low-level air in over much of Maine. Scattered rain showers and isolated thunderstorms will tend to focus where low-level convergence is at its maximum over the mountains and into the Connecticut River Valley . with patchy valley fog forming in the high humidity environment. Some subsidence over low-level ridging atop onshore flow may again produce a period of fog over the midcoast over night.

SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/. Tomorrow, low pressure in the Gulf of Maine pulls in cooler air more stable low-level air over Maine in northeast flow. This undercuts instability over those regions for the most part. So, while continued showers are expected to continue as the upper level trough axis crosses, storm activity will wane from north to south through the day. Weak flow and slow storm movement with the humid environment continues at least an isolated flash flooding threat where convection occurs, especially in the CON/MHT/PSM areas where heavy rain has fallen today. Rain showers taper off quickly after sunset as high pressure moves in.

LONG TERM /WEDNESDAY THROUGH MONDAY/. The long term portion of the forecast begins with our area on the western side of a trough axis with a departing upper level low. This low will exit the region early on the day Wednesday and will be quickly followed by rising heights associated with an approaching ridge from the west which will move in late in the day and persist through Thursday. Northeasterly to easterly flow at the surface along with a good deal of cloud cover will only allow high temperatures on Wednesday and Thursday to reach the lower to middle 70s, especially across western Maine.

Starting on Friday the upper level pattern becomes significantly more zonal with our area remaining largely under weak ridging which will allow for an extended period of warm and humid weather. High temperatures on Saturday through Monday will reach the middle to upper 80s across many areas, especially across southern New Hampshire where a few spots may touch 90 degrees. Along the immediate coast and across the beaches temperatures will likely stay into the lower 70s with a cool southerly flow off the ocean.

The greatest chance for rain will occur on Friday and Friday afternoon when a frontal boundary approaches the area from the west. The area of greatest interest as of now looks to be across northern New Hampshire and northwestern Maine where better forcing is expected. Thereafter, typical summer diurnal heating may spark afternoon showers and thunderstorms for Saturday through Monday.

AVIATION /19Z MONDAY THROUGH SATURDAY/. Short Term . VFR prevails for most through the end of the day with localized restrictions in scattered SHRA and a few TSRA. Patchy valley fog and isolated convection may lead to localized restrictions over southern terminals today, otherwise IFR or lower CIGs are possible along the coast with BR/FG over the Midcoast. More MVFR/local IFR restrictions are possible tomorrow with SHRA which tapers off in the evening . TSRA is again possible during this time for southern terminals.

Long Term . VFR conditions expected through early Thursday before MVFR returns for a few hours during the afternoon on Thursday as well as on Friday through Friday night with scattered showers. The best chance for showers will be across northern terminals of northern New Hampshire and northwestern Maine where better forcing is expected. Confidence is moderate for Wednesday through Thursday and low to moderate for the rest of the forecast period.

MARINE. Short Term . Seas approach and linger in the 4-5 ft range over the waters into tomorrow with light winds (except in storms this afternoon) as low pressure crosses into the Gulf of Maine. Seas may reach into the 5-6 ft range later tomorrow as the large wave aloft crosses, but without confidence to issue a SCA at this time.

Long Term . Seas may approach SCA criteria for outer zones on Wednesday morning. SCA may be required for late Friday with winds increasing to between 20-25 kts.

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



NEAR TERM . Casey SHORT TERM . Casey LONG TERM . Tubbs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44033 - Buoy F0103 - West Penobscot Bay 13 mi72 min SSW 3.9 G 5.8 63°F 3 ft1005.9 hPa
44032 - Buoy E0104 - Central Maine Shelf 19 mi72 min SW 3.9 G 5.8 68°F 60°F4 ft1006.6 hPa

Wind History for Bar Harbor, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockland, Knox County Regional Airport, ME9 mi20 minSSW 510.00 miFair75°F64°F69%1007.8 hPa

Link to 5 minute data for KRKD

Wind History from RKD (wind in knots)
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SW7W3W3W4W3CalmCalmCalmCalmNW3CalmCalmW4Calm5S5S4S7S8S7S6S5
1 day agoSW5S44S5S63SW5S4SE3CalmS8S4S6S7SW7
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Tide / Current Tables for Tenants Harbor, Maine
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Tenants Harbor
Click for Map
Mon -- 12:27 AM EDT     Moonrise
Mon -- 05:06 AM EDT     Sunrise
Mon -- 05:38 AM EDT     8.47 feet High Tide
Mon -- 11:47 AM EDT     1.51 feet Low Tide
Mon -- 01:34 PM EDT     Moonset
Mon -- 06:07 PM EDT     8.81 feet High Tide
Mon -- 08:18 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.64.15.97.48.38.47.76.34.52.81.81.52.13.45.278.38.88.57.45.73.92.5

Tide / Current Tables for Friendship Harbor, Maine
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Friendship Harbor
Click for Map
Mon -- 12:27 AM EDT     Moonrise
Mon -- 05:07 AM EDT     Sunrise
Mon -- 05:31 AM EDT     8.22 feet High Tide
Mon -- 11:47 AM EDT     1.47 feet Low Tide
Mon -- 01:35 PM EDT     Moonset
Mon -- 06:00 PM EDT     8.55 feet High Tide
Mon -- 08:18 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.72.545.87.38.18.17.464.32.71.71.52.13.45.26.98.18.58.27.15.43.72.4

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (17,4,5,8)
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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.