Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
|Sunrise 4:57AM||Sunset 8:28PM||Monday June 25, 2018 3:52 AM EDT (07:52 UTC)||Moonrise 6:07PM||Moonset 3:24AM||Illumination 90%|
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|ANZ153 Casco Bay- 301 Am Edt Mon Jun 25 2018 |
Today..N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt this afternoon. Seas 1 to 2 ft. Patchy fog this morning. A chance of showers. Vsby 1 to 3 nm this morning.
Tonight..W winds 5 to 10 kt, becoming N after midnight. Seas 1 foot or less. A chance of showers in the evening.
Tue..N winds 5 to 10 kt, becoming S 5 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then 1 to 2 ft in the afternoon.
Tue night..SW winds 5 to 15 kt with gusts up to 20 kt, becoming 5 to 10 kt after midnight. Seas 2 to 3 ft.
Wed..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft.
Wed night..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers after midnight.
Thu..S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms.
Thu night..SW winds 5 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Fri..SW winds around 5 kt. Seas 2 to 4 ft.
Fri night..W winds around 5 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.
|ANZ100 301 Am Edt Mon Jun 25 2018 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. Low pressure over the far eastern gulf of maine will quickly shift east today. High pressure will build in from the west this afternoon and will crest over the region early Tuesday before shifting offshore south of new england. High pressure will continue to drift off to the southeast Tuesday night. Low pressure will approach from the west on Wednesday and will slowly move east through the region on Thursday. High pressure will build in from the west Thursday night through Friday.
7 Day Forecast for Marine Location Near Brunswick, MEHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 250721|
area forecast discussion
national weather service gray me
321 am edt Mon jun 25 2018
Low pressure over the far eastern gulf of maine will quickly
shift east today. High pressure will build in from the west this
afternoon and will crest over the region early Tuesday before
shifting offshore south of new england. High pressure will
continue to drift off to the southeast Tuesday night. Low
pressure will approach from the west on Wednesday and will
slowly move east through the region on Thursday. High pressure
will build in from the west Thursday night through Friday
perhaps setting the region up for very hot weather over the
Near term through today
Weak surface low currently moving east through the gulf of maine
will quickly shift east into the maritimes this morning and
associated shower activity will gradually end from west to east
across new hampshire and western maine through mid morning.
At the same time... Deep upper trough will swing in from the
northwest bringing steep lapse rates into the region for the
afternoon. Daytime heating will likely pop off afternoon showers
over a good portion on western and central maine in the
unstable air mass. May develop enough CAPE for some isolated
thunderstorms in northeast zones so have added that possibility
to weather grids there. Clouds and and cool air mass will hold
down temperatures in central and western maine in the 60s and
lower 70s. Farther west highs will range through the 70s in new
Short term tonight through 6 pm Tuesday
Shower activity will quickly die out with loss of heating this
evening and skies will gradually clear over western maine as
high pressure builds in from the west. Clearing skies and light
winds will allow temperatures to dip into the upper 30s to lower
40s in colder mountains valleys in the north. Elsewhere lows
will range through the 40s to lower 50s in the far south.
High pressure will crest over the region early Tuesday before
shifting offshore south of new england. Looking for mostly sunny
skies through the day with highs ranging through the 70s to near
Long term Tuesday night through Sunday
The main focus of the extended forecast will be the chances of
rain and amounts Wed night and Thursday. Thereafter, the focus
will turn to potential heat this weekend.
With high pressure moving offshore Tuesday, we'll get into a
more southerly return flow regime with fair weather through|
Wednesday. An amplifying short wave trough will approach from
the west Wednesday night, likely bringing measurable rain to
most of the forecast area, centered on Thursday. Pwats are
expected to rapidly increase, possibly to as high as 2 inches.
Therefore, if this idea holds we should see heavy downpours -
especially in thunderstorms.
The short wave trough moves out by Friday ending the threat of
rain. Thereafter, the 00z deterministic guidance as well as a
good portion of the latest ensemble information point toward the
possibility of an anomalous mid level ridge setting up just to
our south over the weekend. This would allow a plume of
anomalous heat to push in new england for Saturday and Sunday.
The 00z deterministic ECMWF and GFS shows highs around 100
degrees for many southern locations in our forecast area for at
least Sunday. However, despite relatively good agreement in
current forecast information, there are many things that could
temper heat and or duration of heat here in me and nh. This
could be a subtle short wave trough not currently resolved 6
days out, convective debris, the mid level ridge being flatter
than currently advertised, etc. However, at this time we are
expecting it to get quite hot and humid over the weekend based
on the good model agreement. However, not quite ready to
explicitly forecast 100 degrees anywhere as of yet.
Aviation 06z Monday through Friday
Short term...VFR today with scattered areas of MVFR ceilings
and vsby in showers this afternoon across western and central
maine.VFR tonight and Tuesday. Winds are expected to generally
be northwest northerly today with some gusts around 20 kt.
Long term... Patchy fog possible Tue night withVFR expected
wed. MVFR to ifr conditions in widespread showers and
thunderstorms Thu into Thu night.
Long term... SCA conditions will be quite possible Wednesday
afternoon through Thursday night in association with increasing
southerly flow over the waters.
Gyx watches warnings advisories
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|CASM1 - 8418150 - Portland, ME||23 mi||58 min||64°F||57°F||1008.3 hPa|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||28 mi||62 min||N 3.9 G 3.9||60°F||59°F||2 ft||1008.1 hPa (-0.8)||60°F|
|44032 - Buoy E0104 - Central Maine Shelf||35 mi||108 min||N 3.9 G 3.9||58°F||56°F||3 ft||1007.2 hPa|
Wind History for Wells, ME(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Wiscasset Airport, ME||15 mi||59 min||N 0||9.00 mi||Overcast||61°F||61°F||100%||1008.7 hPa|
|Auburn-Lewiston, ME||20 mi||56 min||N 7||10.00 mi||Light Rain||63°F||62°F||97%||1010.3 hPa|
Wind History from IWI (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||Calm||S||Calm||S||E||E||E||Calm||E||Calm||Calm||N||Calm||Calm||Calm||Calm||Calm|
|2 days ago||Calm||Calm||Calm||Calm||E||SE||S||S||S||S||S||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Mon -- 12:17 AM EDT 4.20 feet High Tide
Mon -- 03:23 AM EDT Moonset
Mon -- 04:58 AM EDT Sunrise
Mon -- 08:40 AM EDT 0.06 feet Low Tide
Mon -- 12:52 PM EDT 3.76 feet High Tide
Mon -- 06:06 PM EDT Moonrise
Mon -- 08:26 PM EDT Sunset
Mon -- 08:48 PM EDT 0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Upper Hell Gate (Sasanoa River |
Click for Map
Mon -- 02:00 AM EDT -0.00 knots Slack
Mon -- 03:23 AM EDT Moonset
Mon -- 04:09 AM EDT -0.76 knots Max Ebb
Mon -- 04:57 AM EDT Sunrise
Mon -- 08:04 AM EDT 0.00 knots Slack
Mon -- 12:10 PM EDT 0.88 knots Max Flood
Mon -- 02:24 PM EDT -0.00 knots Slack
Mon -- 04:20 PM EDT -0.67 knots Max Ebb
Mon -- 06:05 PM EDT Moonrise
Mon -- 08:04 PM EDT 0.00 knots Slack
Mon -- 08:25 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
GOES 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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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Gray/Portland, ME (3,6,7,8)(on/off)  Help
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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 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.