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 5:20AM||Sunset 8:18PM||Thursday July 19, 2018 2:01 AM EDT (06:01 UTC)||Moonrise 12:54PM||Moonset 12:00AM||Illumination 37%|
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|ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 759 Pm Edt Wed Jul 18 2018 |
Rest of tonight..NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Thu..N winds 5 to 15 kt with gusts up to 20 kt, becoming se 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Thu night..SW winds 5 to 10 kt. Seas around 2 ft.
Fri..W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft.
Fri night..S winds 5 to 10 kt. Seas 2 to 3 ft.
Sat..SE winds 5 to 10 kt. Seas 2 to 3 ft.
Sat night..E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely in the evening, then showers with tstms likely after midnight. Some tstms may produce heavy rainfall after midnight.
Sun..SE winds 10 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers likely with a chance of tstms.
Sun night..S winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall.
Mon..S winds 10 to 15 kt with gusts up to 25 kt. Seas around 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall.
Mon night..S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. Winds and seas higher in and near tstms.
|ANZ100 759 Pm Edt Wed Jul 18 2018 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build into the region from the west tonightthrough Thursday and will hold over the area through Saturday. An area of low pressure with an associated warm front will approach from the south Saturday night and will lift north through the region on Sunday.
7 Day Forecast for Marine Location Near Cape Neddick, MEHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 190149|
area forecast discussion
national weather service gray me
949 pm edt Wed jul 18 2018
High pressure will build into the region through Friday and
will hold over the area through Saturday. A coastal wave of low
pressure with an associated warm front will rapidly approach
from the south Saturday night and will lift north through the
region on Sunday. A moist tropical air mass will stream into
the region for much of the upcoming week with a likelihood of
tropical showers and thunderstorms each day through midweek.
Near term tonight
temperatures dropping fast in northern valleys, down into the
mid 50s already. Afternoon dewpoints were in the mid 40s, so
expect this drop to continue until the mid 40s before making a
slower fall thereafter. Have lowered forecast lows in a few
spots based on evening observations and expected clear and calm
conditions. Would not be surprised if berlin makes it into the
30s, but for now will drop them to 41. Dropped sanford, concord,
lewiston, keene all into the 40s as well. Other than watching
the temperature drop tonight, there has not been much that needs
updating from prior forecast.
have made minor adjustments to temperatures tonight as dry air
moves in this evening and high pressure brings good radiational
cooling. Not as concerned about fog considering the dry air
present, with even drier air just above the surface. Best source
of moisture will be near ground level with the recent rainfall
and evapotranspiration, which may be enough to bring scattered
fog to the most sheltered valleys.
sfc high builds tonight beneath departing 500 mb trough. Winds
should diminish, allowing for some radiational cooling in the
sheltered locations, although light NW flow will keep up over
the hilltops and along the coast. Should see some valley fog as
well. Lows range from the mid to upper 40s in the mtns, to the
mid 50s on the coast and in SRN nh.
Short term Thursday and Thursday night
Ridging builds aloft, and should allow sfc ridge to hold over
the CWA thru Thu night, with light flow expected. Given lack of
flow, will likely see a bit of a sea breeze get going, so inland
areas will likely end up a few degrees warmer than Wednesday,
while the coast will be a few degrees cooler. So, again mainly
in the mid 70s to low 80s, but coolest at the coast. Skies will
be mostly clear as well, and with light winds may see a better
radiational cooling night Thu night, but with warmer air in
place will likely cancel things out a bit, and temps Thu night
will be similar to Wed night, the only difference may be more
variation on smaller scales.
Long term Friday through Wednesday
High pres over the region Friday will move offshore Sat allowing
a moist south to southeast flow to develop with a return to
increasing dewpoints. Skies will remain mostly clear into
Saturday. Models in very good agreement on the strong digging
upper low into the ohio valley picking up a significant piece of
energy over the southeast u.S. And rotating it northward with a
strong negative tilt and deepening surface low along the mid
atlantic coast. Models move this system rapidly north and by
early Sunday the system will be rapidly approaching the area.
Conditions will deteriorate rapidly early Sunday from south to
north. Tropical showers and thunderstorms will rapidly spread
north across the forecast area Sunday, and considering the
source region and bermuda high setting up to the east, high
pwats a certainty so QPF amounts could be significant. Also
there is the potential for a significant wind field to develop
on the east side of this system Sunday due to significant
forward speed to the north combined with the strong gradient
wind off the euro model, which is preferred. After the first
short wave exits to the north, going forward for early to
midweek a classic wet tropical pattern sets up across the
northeast as the upper low remains quasi stationary to the west
over the ohio valley while the large bermuda high builds slowly
west and north. This will allow several shortwaves to move
around the periphery of bermuda high with tropical moisture in
place. Basically this all spells warm and very muggy conditions
early to at least midweek with daily tropical diurnal nocturnal
showers and thunderstorms. Confidence high on this potential
heavy rainfall setup that will last for several days.
Aviation 00z Thursday through Monday
Short term... MainlyVFR. Valley fog possible at khie kleb
tonight and Thu night.
Long term...VFR through Saturday. Thereafter, a tropical air
mass will provide MVFR ifr conditions in showers and areas of
fog Sunday through midweek.
Short term... No flags.
Long term... SCA conditions will possibly develop late in the
weekend and last through midweek. Depending on the track of the
wave of low pressure winds over the outer waters may approach
gales late Sunday into early next week. A prolonged south to
southeast fetch will allow seas to continue to build and remain
high through the week.
Gyx watches warnings advisories
Near term update... Kimble
short term... Cempa
long term... Marine
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|
|44030 - Buoy B0102 - Western Maine Shelf||9 mi||58 min||NNW 9.7 G 12||65°F||68°F||3 ft||1013.7 hPa|
|WELM1 - 8419317 - Wells, ME||11 mi||32 min||N 6 G 7||59°F||64°F||1015.8 hPa|
|WEXM1 - Wells Reserve, ME||12 mi||62 min||NW 4.1||60°F||49°F|
|IOSN3 - Isle of Shoals, NH||13 mi||62 min||NNW 9.9 G 11||66°F||1014.7 hPa (+1.1)||52°F|
|BGXN3 - Great Bay Reserve, NH||15 mi||77 min||Calm||54°F||53°F|
|44098 - Jeffrey's Ledge, NH (160)||34 mi||26 min||67°F||3 ft|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||35 mi||72 min||NNW 7.8 G 9.7||64°F||64°F||2 ft||1014.8 hPa (+1.0)||54°F|
|CASM1 - 8418150 - Portland, ME||39 mi||32 min||64°F||60°F||1015.7 hPa|
|44029 - Buoy A0102 - Mass. Bay/Stellwagen||44 mi||58 min||NNE 14 G 16||69°F||68°F||3 ft||1013.4 hPa|
Wind History for Wells, ME(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Pease Air Force Base / Portsmouth, NH||13 mi||66 min||WNW 4||10.00 mi||Fair||60°F||50°F||73%||1015.4 hPa|
|Sanford, Sanford Regional Airport, ME||18 mi||66 min||N 0||10.00 mi||Fair||51°F||50°F||96%||1016.1 hPa|
|Rochester - Skyhaven Airport, NH||19 mi||71 min||NW 7||10.00 mi||Fair||59°F||48°F||69%||1015.1 hPa|
Wind History from PSM (wind in knots)
|1 day ago||Calm||Calm||Calm||E||Calm||Calm||SW||W||SW||S||S||W||SW||SW||S||S||S||W||SW||SW||SW||W||W||NW|
|2 days ago||Calm||Calm||Calm||Calm||NW||Calm||Calm||Calm||Calm||Calm||NE||E||E||E||E||E||E||E||E||E||Calm||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Cape Neddick |
Click for Map
Thu -- 04:51 AM EDT 9.49 feet High Tide
Thu -- 05:19 AM EDT Sunrise
Thu -- 11:12 AM EDT -0.23 feet Low Tide
Thu -- 12:54 PM EDT Moonrise
Thu -- 03:53 PM EDT First Quarter
Thu -- 05:28 PM EDT 9.49 feet High Tide
Thu -- 08:16 PM EDT Sunset
Thu -- 11:47 PM EDT 0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Portsmouth Harbor Entrance |
Click for Map
Thu -- 12:00 AM EDT Moonset
Thu -- 12:40 AM EDT 0.00 knots Slack
Thu -- 02:38 AM EDT 1.25 knots Max Flood
Thu -- 05:20 AM EDT Sunrise
Thu -- 06:23 AM EDT -0.00 knots Slack
Thu -- 09:14 AM EDT -2.08 knots Max Ebb
Thu -- 12:54 PM EDT Moonrise
Thu -- 01:08 PM EDT 0.00 knots Slack
Thu -- 03:11 PM EDT 1.31 knots Max Flood
Thu -- 03:53 PM EDT First Quarter
Thu -- 07:08 PM EDT -0.00 knots Slack
Thu -- 08:17 PM EDT Sunset
Thu -- 09:49 PM EDT -1.82 knots Max Ebb
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 (2,6,7,8)(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.