Sunday, July23, 2017 L-36.com


Marine Weather and Tides
Thomaston, ME

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:16AMSunset 8:14PM Sunday July 23, 2017 2:56 AM EDT (06:56 UTC) Moonrise 5:29AMMoonset 8:22PM Illumination 0% Phase: New Moon; Moon at 29 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- 125 Am Edt Sun Jul 23 2017
Rest of tonight..NE winds 5 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sun..NE winds 10 to 15 kt with gusts up to 20 kt, becoming se in the afternoon. Seas 2 to 3 ft.
Sun night..SW winds around 5 kt, becoming nw after midnight. Seas around 2 ft.
Mon..E winds 5 to 10 kt, becoming 5 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of rain in the morning, then rain likely in the afternoon.
Mon night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely, mainly in the evening. Vsby 1 to 3 nm.
Tue..NE winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers.
Tue night..N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers in the evening.
Wed..W winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..SW winds 5 to 10 kt. Seas around 2 ft.
Thu..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Thu night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely.
ANZ100 125 Am Edt Sun Jul 23 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front will cross the waters tonight. High pressure will then build over the waters on Sunday and remain for Sunday night. Low pressure will then pass south of the waters late Monday and Monday night. High pressure then builds southward over the waters for Tuesday and Wednesday. Another cold front crosses the waters Thursday.

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 222345
afdgyx
area forecast discussion
national weather service gray me
745 pm edt Sat jul 22 2017

Synopsis
A cold front across the forecast area will exit into southern
new england tonight before stalling. High pressure will build by
to our north overnight through Sunday and provide some clearing
mainly to northern sections of new england. Low pressure will
approach from the southwest later Sunday night and for Monday
and will deliver cooler temperatures and the likelihood of rain.

Conditions will gradually improve by Tuesday night and
Wednesday as high pressure moves in.

Near term until 6 am Sunday morning
730 pm update...

cold front continues to drop slowly southward early this
evening. Band of showers ahead of this boundary has developed
across central new hampshire. Hrrr has a pretty good handle on
this activity which it gradually drops south into southern new
hampshire by around midnight before shifting out of the
forecast area during the early morning hours. Have adjusted pops
and wx grids based on current radar trends. Aside from a few
tweaks to temps tds... No other changes planned attm.

Previous discussion...

at 18z the cold front extended from mid coast maine westward
through central new hampshire and into upstate new york. This
boundary continues to inch southward and will provide a weak
focus for widely scattered convection through early evening. The
nws doppler radar mosaic has showed some widely scattered
echoes over the past few hours and expect that to continue.

The boundary will finally settle into southern new england and
long island sound by morning before stalling. Clearing should be
confined to northern areas... As the remainder of the region
remains on the northern periphery of the high and mid cloud
shield.

Short term 6 am Sunday morning through Sunday night
On Sunday... The northeast synoptic flow between the surface
high over eastern canada and the stalled front to our south will
gradually become more easterly. Much of the area will remain on
the northern periphery of the high cloud shield from the stalled
baroclinic zone and those clouds and the onshore flow will
limit highs to the mid 70s to lower 80s. It should be a dry day
with comfortable humidity levels.

Sunday night... Thicker clouds will gradually spread north and
east in developing warm air advection ahead of approaching
shortwave impulse and associated surface reflection. Showers
should gradually spread north and east in the predawn hours and
reach all but our far northern and eastern maine zones by
morning.

Long term Monday through Saturday
A temporary pattern shift will occur, with cooler and more raw
conditions developing for the beginning of the work week next
week. Some much needed rainfall may finally reach the coastline
which has missed out on much of the convection during the past
month or so do to cooling onshore breezes. Upslope conditions
may allow for locally heavy rainfall in the mountains.

Temperatures to begin the week well below normal with widespread
60s for daytime highs. Details are below.

A significant upper level trough for mid to late july swings
east and into new england on Monday. This will trigger
cyclogenesis along the south coast of massachusetts during the
day. This will provide a cool and raw northeast flow over the
region. Low cloud cover will keep readings in the 60s over many
areas, especially near and along the coastline. Showers will
break out. The atmosphere will remain fairly stable at the
surface, but instability aloft may be sufficient for a few
embedded thunderstorms.

With high precipitable water values and the likelihood of
showers throughout the day, there may be some pockets of locally
heavy rainfall. As the showers and isolated storms continue
Monday night, the threat of the possibility of localized
flooding will be on the increase, mainly in favorable upslope
areas where persistent heavy showers are a possibility.

By Tuesday, the surface low will begin to exit to the east
towards the canadian maritimes near halifax nova scotia. With a
wind shift, most of the showers will exit the region over
southern areas. However, the h7 and h5 low will remain over the
region, allowing an easterly upslope flow to continue over the
mountains. This will allow for additional showers across the
higher terrain during the day.

All areas finally begin to have drier air advect into the region
Wednesday as the upper level trough shifts to the east and a
ridge of high pressure builds into the region.

Yet another cold front will approach the region on Thursday,
before crossing off the coastline by Friday. This will add a few
more scattered showers and perhaps a thunderstorm during the
period.

Aviation 00z Sunday through Thursday
Short term through Sunday night ...VFR tonight and Sunday with
river valley stratus and fog psb late tonight. Areas of MVFR
developing aft 05z Mon in -shra.

Long term... Monday will continue to lower into ifr conditions
as log pressure develops. There may be an embedded thunderstorm.

Ifr conditions will likely persist throughout the night
especially along the coast Monday night. Conditions will
improve on Tuesday with mostly mountain shower activity and
increasing ceilings to the south. High pressure builds back in
for Wednesday.

Marine
Short term through Sunday night ... Ne flow will develop behind
a cold front tonight and could briefly approach small craft at
times in gusts outside the bays overnight into Sunday.

Long term... A low will develop south of new england through
Monday. This will bring increasing easterly winds to the waters
with small craft conditions potentially during the day on
Monday. A strong low level jet may result in a few gusts over
sca thresholds in regions of heavy showers. High pressure will
move in for Wednesday with subsiding winds and seas.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44033 - Buoy F0103 - West Penobscot Bay 13 mi112 min NNE 12 G 14 64°F 58°F1 ft1009 hPa
44032 - Buoy E0104 - Central Maine Shelf 19 mi112 min NE 9.7 G 12 64°F 60°F2 ft1008.9 hPa
MISM1 - Matinicus Rock, ME 23 mi56 min NNE 17 G 18 61°F 1009.4 hPa (+1.1)51°F

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 mi60 minVar 510.00 miOvercast65°F53°F66%1010.3 hPa

Wind History from RKD (wind in knots)
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Last 24hrW5NW5CalmNW3NW4W5565
G15
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SW6W3CalmCalmN7655
1 day agoCalmW4W4CalmW3W6NW6N6W6S8S6S8S10S7SW11
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2 days agoCalmCalmCalmCalmW4W6W553S7S9S9S9S5S7S3S4CalmCalmW4W3NE5W3Calm

Tide / Current Tables for Tenants Harbor, Maine
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Tenants Harbor
Click for Map
Sun -- 05:13 AM EDT     -1.49 feet Low Tide
Sun -- 05:15 AM EDT     Sunrise
Sun -- 05:28 AM EDT     Moonrise
Sun -- 05:47 AM EDT     New Moon
Sun -- 11:28 AM EDT     10.30 feet High Tide
Sun -- 05:24 PM EDT     -0.54 feet Low Tide
Sun -- 08:10 PM EDT     Sunset
Sun -- 08:21 PM EDT     Moonset
Sun -- 11:41 PM EDT     11.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.78.45.22-0.4-1.4-10.83.66.68.910.210.18.76.33.30.9-0.4-0.31.347.29.911.5

Tide / Current Tables for Friendship Harbor, Maine
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Friendship Harbor
Click for Map
Sun -- 05:14 AM EDT     -1.49 feet Low Tide
Sun -- 05:16 AM EDT     Sunrise
Sun -- 05:29 AM EDT     Moonrise
Sun -- 05:47 AM EDT     New Moon
Sun -- 11:22 AM EDT     10.07 feet High Tide
Sun -- 05:25 PM EDT     -0.54 feet Low Tide
Sun -- 08:10 PM EDT     Sunset
Sun -- 08:21 PM EDT     Moonset
Sun -- 11:35 PM EDT     11.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.384.91.8-0.4-1.5-1.10.83.66.68.8109.88.463.20.8-0.4-0.31.347.19.811.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Gray/Portland, ME (2,6,7,8)
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Ground Weather Radar Station Portland, ME
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weather_mapweather_map weather_map

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Disclaimer:
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 numerious 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.