Marine Weather and Tides
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 4:59AM||Sunset 8:15PM||Monday May 29, 2017 3:02 PM EDT (19:02 UTC)||Moonrise 9:07AM||Moonset 11:57PM||Illumination 18%|
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|ANZ152 Coastal Waters From Port Clyde, Me To Cape Elizabeth, Me Out 25 Nm- 1121 Am Edt Mon May 29 2017 |
This afternoon..E winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Patchy drizzle with a slight chance of showers. Patchy fog.
Tonight..E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers in the evening. Patchy drizzle. Patchy fog in the evening. Patchy fog after midnight. Vsby variable to less than one quarter nm after midnight.
Tue..SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog in the morning. Patchy drizzle in the morning...then a chance of showers in the afternoon. Vsby variable to less than one quarter nm in the morning.
Tue night..S winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
Wed..S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
Wed night..SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers in the evening.
Thu..W winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Thu night..W winds around 10 kt. Seas 2 to 4 ft.
Fri..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Fri night..SW winds 5 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers.
|ANZ100 1121 Am Edt Mon May 29 2017 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. A trough will cross the waters today into Tuesday...bringing a period of showers. Low pressure will sit to our north through the rest of next week...with southerly and then predominantly westerly flow.
7 Day Forecast for Marine Location Near Boothbay Harbor, MEHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 291527|
area forecast discussion
national weather service gray me
1127 am edt Mon may 29 2017
Low pressure centered north of the great lakes will push an
occluded front eastward across new england through Tuesday. This
front and an onshore flow will produce cool unsettled weather
with showers from time to time along with areas of drizzle and
fog. Warmer weather returns for the second half of the work
week, but with the chance of showers each day.
Near term until 6 pm this evening
1120 am... Updated forecast reflects timing of precip across the
cwa based on current obs, and MAX temps, which may bump up by a
degree or two, but probably no more, so that means around 50 in
most places, with the warmer spots N of the whites,in the ct
vly, and in SRN nh away from the coast in the mid to upper 50s.
Some patchy fog and dz should persist through the day, but
likely it be few and far between limited to the hilltops in the
upslope, and right along the coast. The showers will spread
across nh and into most of WRN me this afternoon.
820 am update... Have updated the forecast to tighten up pop
timing a bit based largely on the time-lagged hrrr ensemble.
Much of the morning should be dry with a relatively narrow band
of showers moving in during the afternoon and evening hours.
Temperatures will remain colder than normal, especially at the
625 am... Minor estf update to ingest the current mesonet into
near term grids.
at 06z... A 1000 millibar low was over the upper great lakes with
associated warm front through the mid atlantic region and a
trailing cold front through the mississippi valley. GOES water
vapor showed an upper low vicinity of lake superior and a
shortwave impulse upstream of the forecast area over the upper
mississippi valley racing northeastward. NWS doppler radar
mosaic showed an area of broken convection stretching from the
eastern great lakes through the mid atlantic region. For
today... The warm front will lift slowly northward into new
england while the shortwave impulse races northeast across the
forecast area this afternoon and evening. The band of showers
will lift northeast and cross the area during the afternoon and
early evening. Otherwise... A mostly cloudy day with onshore flow
contributing some patchy drizzle and fog mainly along the
coastal plain. Today will be chilly by late may standards with
high temperatures limited to the 50s.
Short term 6 pm this evening through 6 pm Tuesday
Shower activity will trail off tonight as the weakening
shortwave impulse exits into the maritimes by late evening.
We're left with the persistent onshore flow with widespread
stratus and fog along with patchy drizzle for the remainder of
the overnight period as the warm front remains hung up to our
south and west. Lows tonight will be in the 40s. On
Tuesday... The occluding frontal system remains to our south and
west with onshore flow continuing. Another weak shortwave
impulse will ride northeast and bring another round of more
widespread showers during the afternoon. Otherwise... Mostly
cloudy and cool with some patchy drizzle and fog in the onshore
flow. Highs tomorrow will range from the upper 50s to lower 60s.
Long term Tuesday night through Sunday
Overall the global models are in pretty good agreement with the
continued blocky pattern through Thursday. It is after this
point that the GFS and euro begin to have very different
solutions for the extended mainly concerning how to deal with
the east coast closed low. Looking at long term blocking indices|
and hovmoller plots, the blocking pattern should start to break
up around day 10 (6 8).
Around mid week the large cyclone on the east side of the rex
block which has been affecting our weather will shift east, closer
to central quebec province but still to our west. The low takes
on a negative tilt allowing a series of basal short waves to
affect northern new england more directly. With the atmospheric
river in place rich moisture still being pumped north from the
tropics, this results in several rounds of showers and
thunderstorms this week with at least a couple moderately strong
frontal passages. The mountains will be closest to quasi-
stationary forcing and this combined with orographic effects
will keep clouds and rain showers in the forecast for northern
zones for much of the time.
The rainiest periods look like Wednesday and again Saturday.
There will be chances for more organized convection with thunder
given the strength of the cold pool aloft and especially if the
timing of frontal passages is favorable for peak heating. In
particular Wednesday and perhaps Friday look possible for
Overnight lows this week will generally be in the upper 40s to
mid 50s, or slightly above normal. Highs will be in the 60s and
70s with some warmer spots possible over southern and interior
sections in westerly flow and also those times when the Sun is
able to break through the clouds.
Aviation 15z Monday through Friday
Short term through Tuesday ... MVFR in shra with areas of ifr
along the coastal plain in drizzle and fog throughout the period.
Long term... Rainy conditions with MVFR or lower ceilings and low
visibilities especially overnight and in the morning are
expected Wednesday Friday. Fog may be a concern Thursday
Short term through Tuesday ... Quiet on the waters with winds
and seas below sca. However... We will see vsby restrictions on
the water in showers and fog.
Long term... The next chance of SCA conditions for gusty winds
and increasing seas may occur Friday into Saturday as a strong
cold front crosses the waters.
Tides coastal flooding
The astronomical high tide in portland is 11.1 feet mllw at
3:08 am Tuesday. Last night's tide was about 0.6 feet above
predicted levels. With winds and seas virtually unchanged, we
may be issuing something for tonight's tide later today as water
conditions may exceed their minimal benchmark levels to produce
isolated minor flooding.
Gyx watches warnings advisories
near term... Cempa
tides coastal flooding...
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|
|44032 - Buoy E0104 - Central Maine Shelf||17 mi||118 min||E 18 G 19||44°F||47°F||3 ft||1018.8 hPa|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||34 mi||72 min||E 14 G 18||45°F||47°F||4 ft||1018.6 hPa (+0.0)||45°F|
|CASM1 - 8418150 - Portland, ME||35 mi||44 min||46°F||49°F||1019.6 hPa|
|44033 - Buoy F0103 - West Penobscot Bay||37 mi||118 min||ESE 12 G 14||45°F||47°F||2 ft||1019.5 hPa|
|MISM1 - Matinicus Rock, ME||42 mi||62 min||E 18 G 19||44°F||1019.4 hPa (-0.0)||44°F|
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||8 mi||69 min||E 8||10.00 mi||Overcast||51°F||44°F||77%||1019.9 hPa|
Wind History from IWI (wind in knots)
|1 day ago||SW||S||SE||SE||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||S||S||S||S||S|
|2 days ago||N||Calm||Calm||Calm||Calm||Calm||W||NW||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Boothbay Harbor |
Click for Map
Mon -- 02:05 AM EDT 11.13 feet High Tide
Mon -- 05:00 AM EDT Sunrise
Mon -- 08:30 AM EDT -1.53 feet Low Tide
Mon -- 09:07 AM EDT Moonrise
Mon -- 02:48 PM EDT 9.75 feet High Tide
Mon -- 08:11 PM EDT Sunset
Mon -- 08:46 PM EDT -0.13 feet Low Tide
Mon -- 11:56 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Lowe Point (northeast of) |
Click for Map
Mon -- 12:16 AM EDT 2.24 knots Max Flood
Mon -- 04:03 AM EDT -0.00 knots Slack
Mon -- 05:01 AM EDT Sunrise
Mon -- 06:35 AM EDT -2.70 knots Max Ebb
Mon -- 09:08 AM EDT Moonrise
Mon -- 10:27 AM EDT 0.00 knots Slack
Mon -- 12:54 PM EDT 2.03 knots Max Flood
Mon -- 04:44 PM EDT -0.00 knots Slack
Mon -- 07:00 PM EDT -2.17 knots Max Ebb
Mon -- 08:12 PM EDT Sunset
Mon -- 10:38 PM EDT 0.00 knots Slack
Mon -- 11:57 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Northeast EDIT
Wind Forecast for Gray/Portland, ME (15,3,4,5)(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.