Marine Weather and Tides
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.
|Sunrise 6:32AM||Sunset 7:05PM||Sunday March 26, 2017 4:47 PM EDT (20:47 UTC)||Moonrise 5:57AM||Moonset 5:31PM||Illumination 1%|
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|ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 318 Pm Edt Sun Mar 26 2017 |
.small craft advisory in effect from Monday morning through late Monday night...
Tonight..SE winds 5 to 10 kt...increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Snow likely. A chance of rain this evening...then rain and sleet likely after midnight. Patchy fog after midnight. Vsby 1 to 3 nm.
Mon..SE winds 10 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft... Building to 4 to 6 ft in the afternoon. Rain. Patchy fog.
Mon night..W winds 5 to 15 kt...becoming nw 5 to 10 kt after midnight. Seas 4 to 6 ft. A chance of rain. Patchy fog.
Tue..N winds 5 to 10 kt...becoming ne in the afternoon. Seas 3 to 5 ft. A chance of rain in the afternoon.
Tue night..E winds 5 to 10 kt...becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Rain likely in the evening...then a chance of showers after midnight.
Wed..NW winds 10 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed night..NW winds 15 to 20 kt...becoming 10 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft.
Thu..NW winds 10 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Thu night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Fri..N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Fri night..SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain.
|ANZ100 318 Pm Edt Sun Mar 26 2017 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure shifts east toward nova scotia overnight with an easterly flow developing over the waters. Low pressure will track east through southern new england and into the gulf of maine on Monday. Another low will follow a similar track Tuesday night. High pressure then builds in out of the northwest through the end of the week.
7 Day Forecast for Marine Location Near Dover, NHHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 261846|
area forecast discussion
national weather service gray me
246 pm edt Sun mar 26 2017
A warm front will approach from the southwest tonight, before a
weak wave of low pressure forms and passes through the gulf of
maine Monday. This will provide a round of mixed wintry
precipitation Sunday night into Monday. Low pressure moves north
of the region on Tuesday and drags a cold front through on
Wednesday. High pressure will build in from canada for the end
of the week.
Near term /through tonight/
Two batches of precipitation will cross our forecast area. First
batch over western new england this afternoon will attempt this
passage the rest of this afternoon and evening. However,
extremely dry canadian air remains in place in the lower levels
of the atmosphere. Much of the echoes shown on radar will
dissipate before any precipitation reaches the ground.
Nevertheless, latest model suite projecting light precipitation
overnight in a warm air advection, cyclonic flow. With such cold
and dry air in place, this precipitation will mainly be in the
form of light sleet or snow. The most likely area to have
freezing rain accretion still appears to be southern new
Used a non-diurnal curve for the overnight lows. Temperatures
will likely drop with some light precipitation due to
evaporation cooling with the first batch. Thereafter,
temperatures warm through the night.
Short term /Monday through Monday night/
Mixed precipitation gradually changes to rain over southern and
central areas during the day Monday with mixed precipitation
continuing in the north. A weak wave of low pressure will
likely form in the gulf of maine during the day. This will
prevent significant warming as winds become northwest for a
period of time.
Areas of mixed precipitation likely to continue over the north
Monday night. However, much of the dynamics associated with the
system will have shifted to the east of the region. Any
precipitation should be light.
Long term /Tuesday through Sunday/
The models remain in decent agreement on the longwave pattern
through late in the work week. Thereafter, timing and strength of
individual impulses embedded in fast flow across the northern
tier of the CONUS becomes problematic. There is a corresponding
decrease in forecaster confidence in sensible weather details
after day five. We begin the period with a digging shortwave
impulse near the southern tip of hudson bay and a weakening
impulse over the midwest. By late Wednesday... We're left with
shortwave energy centered over eastern new england. At the
surface... Low pressure will track from the lower great lakes to
southern new england by Tuesday night with an area of overrunning
rain... And some light wintry mix near the international|
border... Ahead of this disturbance. By early Wednesday... The low
and associated frontal system will exit the coast with a brisk
northwest flow in its wake along with some upslope clouds and snow
showers for the higher terrain. Rising heights arrive for Thursday
with a building ridge of high pressure providing a dry but brisk
day as gusty northwest winds continue. The ridge will crest
overhead Thursday night before retreating offshore on Friday. The
next impulse and associated surface low should approach from the
midwest by early Saturday. However... Models offer a plethora of
solutions with this system lending considerable uncertainty to
sensible weather details for next weekend.
Aviation /18z Sunday through Friday/
Short term... Very dry air in place initially in the lower
levels. However, moisture will eventually brings ceiling and
visibilities down into the ifr category later tonight through
Monday. Possible llws away from the coast tonight if winds aloft
Some modest improvement in ceilings/visibilities Monday night.
tue... MVFR with areas of ifr in ceilings... -ra and fog.
Wed - thu... Sct MVFR in mtn -shra/-shsn.
Nw sfc wind gusting to 25 kt.
Short term... Have raised flags for small craft. Winds increase
out of the southeast on Monday. Seas will remain above 5 feet
for the outer waters, so scas will continue into Monday night.
wed - thu... Small craft conditions are likely.
Me... Winter weather advisory from 8 pm this evening to 5 pm edt
Monday for mez007>009-012>014-018>022.
Winter weather advisory from 8 pm this evening to 10 am edt
Monday for mez023>028.
Nh... Winter weather advisory from 8 pm this evening to 5 pm edt
Monday for nhz001>004-006-009-010.
Freezing rain advisory from 8 pm this evening to 10 am edt
Monday for nhz005-007-008-011>015.
Marine... Small craft advisory from 8 am to 6 pm edt Monday for anz153.
Small craft advisory from 8 am Monday to 6 am edt Tuesday for
Near term... Cannon
short term... Cannon
long term... Schwibs
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|
|BGXN3 - Great Bay Reserve, NH||10 mi||63 min||E 4.1||37°F||1034 hPa||23°F|
|WELM1 - 8419317 - Wells, ME||18 mi||48 min||SSE 6 G 8||35°F||39°F||1033.5 hPa (-2.2)|
|WEXM1 - Wells Reserve, ME||19 mi||48 min||SE 4.1||35°F||20°F|
|IOSN3 - Isle of Shoals, NH||21 mi||48 min||ESE 8 G 8.9||34°F||1033 hPa (-1.6)||22°F|
|44030 - Buoy B0102 - Western Maine Shelf||23 mi||104 min||ESE 5.8 G 7.8||34°F||39°F||3 ft||1033.5 hPa|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||45 mi||58 min||SSE 7.8 G 9.7||33°F||38°F||2 ft||1033.5 hPa (-1.9)||17°F|
|CASM1 - 8418150 - Portland, ME||46 mi||48 min||37°F||37°F||1032.9 hPa (-2.3)|
|44098 - Jeffrey's Ledge, NH (160)||46 mi||42 min||41°F||3 ft|
|44029 - Buoy A0102 - Mass. Bay/Stellwagen||49 mi||104 min||ESE 9.7 G 12||36°F||39°F||3 ft||1032.4 hPa|
Wind History for Wells, ME(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Rochester - Skyhaven Airport, NH||6 mi||57 min||S 5||10.00 mi||Overcast||35°F||18°F||50%||1032.3 hPa|
|Pease Air Force Base / Portsmouth, NH||8 mi||1.8 hrs||ESE 8||10.00 mi||Mostly Cloudy||34°F||19°F||54%||1033.6 hPa|
|Sanford, Sanford Regional Airport, ME||16 mi||52 min||Var 4||10.00 mi||Mostly Cloudy||34°F||18°F||52%||1034 hPa|
Wind History from DAW (wind in knots)
|1 day ago||S||S||Calm||Calm||Calm||NW||Calm||W||NW||NW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NE||NE||N||Calm||Calm||Calm|
|2 days ago||NW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Sun -- 05:55 AM EDT 0.20 feet Low Tide
Sun -- 05:56 AM EDT Moonrise
Sun -- 06:35 AM EDT Sunrise
Sun -- 12:14 PM EDT 7.66 feet High Tide
Sun -- 05:31 PM EDT Moonset
Sun -- 06:22 PM EDT -0.26 feet Low Tide
Sun -- 07:03 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Portsmouth Harbor Entrance |
Click for Map
Sun -- 12:02 AM EDT -0.00 knots Slack
Sun -- 02:43 AM EDT -1.85 knots Max Ebb
Sun -- 05:55 AM EDT Moonrise
Sun -- 06:33 AM EDT 0.00 knots Slack
Sun -- 06:35 AM EDT Sunrise
Sun -- 08:33 AM EDT 1.30 knots Max Flood
Sun -- 12:16 PM EDT -0.00 knots Slack
Sun -- 03:06 PM EDT -2.08 knots Max Ebb
Sun -- 05:30 PM EDT Moonset
Sun -- 06:59 PM EDT 0.00 knots Slack
Sun -- 07:02 PM EDT Sunset
Sun -- 09:00 PM EDT 1.41 knots Max Flood
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 (16,3,4,5)(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.