Marine Weather and Tides
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 5:51AM||Sunset 7:37PM||Sunday August 20, 2017 11:23 AM EDT (15:23 UTC)||Moonrise 4:22AM||Moonset 7:00PM||Illumination 3%|
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|ANZ153 Casco Bay- 847 Am Edt Sun Aug 20 2017 |
Rest of today..W winds 5 to 10 kt. Seas 1 to 2 ft.
Tonight..W winds 5 to 10 kt. Seas 1 to 2 ft.
Mon..SW winds 5 to 10 kt, becoming S 5 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 to 2 ft.
Mon night..SW winds 5 to 10 kt. Seas 1 to 2 ft.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 to 2 ft, building to 2 to 3 ft in the afternoon. A chance of showers in the afternoon.
Tue night..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers and tstms.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers.
Wed night..W winds 5 to 10 kt. Seas 2 to 3 ft.
Thu..W winds around 5 kt. Seas 1 to 2 ft.
Thu night..NW winds around 5 kt. Seas 1 to 2 ft. Winds and seas higher in and near tstms.
|ANZ100 847 Am Edt Sun Aug 20 2017 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build south of the waters through Monday before pushing well offshore to our south on Tuesday. A cold front will cross the waters on Wednesday before high pressure builds back over the waters for the end of the week.
7 Day Forecast for Marine Location Near Cousins Island, MEHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 201248|
area forecast discussion
national weather service gray me
848 am edt Sun aug 20 2017
High pressure will build to the south of the region through
Monday before sliding to the east on Tuesday. A cold front will
move in from the west Tuesday night and cross the region on
Wednesday. High pressure and drier air follows the front Wednesday
night through Friday.
Near term until 7 pm this evening
845 am... Minor estf update to ingest the current mesonet into
near term grids.
510 am update: going forecast in good shape with some minor
adjustments to placement of weak sprinkles light showers moving
east ahead of mid level shortwave. However... Regional water
vapor imagery shows deep layer drying arriving from the
west... Which will bring remaining showers to an end in the next
1-2 hours. Fog is also showing some signs of thinning during the
past hour along the midcoast... With some new patches showing
back up over the ct valley. Rapid improvement is expected around
daybreak and shortly thereafter. Temperatures remain mild and
bumped up near term temps 1-2 f based upon these observations.
Original discussion below...
high impact weather potential: patchy dense fog rkd-aug-lew
region through daybreak.
Current pattern: cold front has now exited the forecast area with
shortwave trough axis overhead and also about ready to exit east.
Blended total precipitable water product shows a pocket of drier air
centered over the great lakes... Poised to move east into new england
as heights build behind departing trough. Surface high pressure is
centered over WV va and is also gradually pulling east. The pattern
portends a quiet near term forecast with primary forecast concerns
centered around current fog low stratus and when it will break up.
Through daybreak: tracking a band of sprinkles and light
showers that are now moving into southwestern new hampshire.
These have weakened substantially over the past few hours... But
will continue to lift north and east ahead of mid level
shortwave through daybreak. By daybreak... Any remaining shower
activity will become increasingly confined to the upslope areas
in the mountains. Further east... Have seen occasional dense fog
at leb-aug-rkd and have issued an sps for this as improvement
will arrive from the west over the next few hours... And
certainly no later than daybreak. Temperatures generally
remaining in the 60s for overnight lows.
Today: for a few hours this morning... Expect some lower clouds
and perhaps shower sprinkle activity in the upslope areas of
northern nh before better moisture lifts north and east.
Otherwise... Expect any remaining shallow moisture over eastern
areas to quickly mix out today... With skies turning partly to
mostly sunny a few CU all areas and some mid clouds closer to
the international border under developing moderate 10 mph gust
to 20 mph northwesterly winds. Otherwise... T8s have fallen
2-3c from yesterday to around 11-12c... But with more morning sun
expect most locations to see high temperatures close to or just
shy of what was observed today... With 70s from the mountains
north and lower middle 80s over the coastal plain into the
Short term 7 pm this evening through 6 pm Monday
High impact weather potential: none.
Pattern summary: brisk zonal flow aloft is expected through the
short term forecast period between mid level low moving into the
hudson bay region... With climatological high over the southeastern
states. Surface high pressure east of the mid atlantic reaches our
longitude during the day Monday with ridge axis north of this
feature pretty much dominating the surface pattern through the short
term forecast period. Driest air through the column will settle
overhead tonight... Gradually shifting east on Monday with values
near climatological norms through the period.
Tonight: with high pressure centered just south of the|
region... Llevel gradient relaxes with decoupling expected all areas
under clear skies. Afternoon dewpoints suggest a decent place to
start for expected overnight lows... And expect a cooler night than
the past few with the drier airmass overhead. Lows should reach the
50s for most areas... With southern nh and coastal me likely
remaining at or just above 60.
Monday: deep west southwest flow aloft with surface high pressure
gradually pulling off the us east coast with return flow
strengthening. Nearest frontal boundary will be draped well north
and west of the forecast area... Extending from central quebec south
and west into the great lakes region. While this won t be close
enough to have any meaningful weather impacts... Could see some high
cloudiness stream east from any ongoing convection. This bit of
cirrus and perhaps a few daytime CU will be all that will impact
viewing of the eclipse over the forecast area. A warm day is in
store with t8s around +15c. While the eclipse will likely temper
temperatures for 1-2 hours... Do not expect that this will have much
of an influence on the actual highs... Which may be pushed an hour
later... But still reach the 80s most locations... With mht-ash-sfm
corridor potentially hitting 90.
Long term Monday night through Saturday
A warm and humid southwest flow will continue Tuesday in advance
of an upper trof and associated cold front. By late Tuesday
showers and thunderstorms will spread across much of nh and
western me. Tue night into Wed showers and thunderstorms are
expected as the upper trof moves across the region. By wed
afternoon the upper trof and cold front moves off the coast
allowing clearing to take place in the afternoon. High pressure
builds across the region Thu and into the weekend with near
seasonal temps and dry conditions.
Aviation 13z Sunday through Thursday
Short term through Monday ...
summary: high pressure will build south of the region through
Monday bringing improving flying conditions to the area.
Restrictions: lifr fog stratus is gradually eroding from the
west with rkd aug likely to improve toVFR around daybreak.
Otherwise... Could see some ifr fog develop near leb around
daybreak with upslope cloudiness bringing MVFR restrictions to
hie through the morning.VFR this afternoon through Monday
outside of potential fog redevelopment tonight hie leb and
Winds: light and variable winds overnight will become northwesterly
and increase to 10g18kts for the day today before diminishing back
to calm tonight. Winds will become westerly 10-15kts for the day on
Llws: llws is not expected through Monday.
Lightning: no thunderstorms are expected through Monday.
vfr Tuesday. Areas of MVFR ifr conditions in showers and
thunderstorms late Tuesday into wed. BecomingVFR for late
Wednesday through Friday.
Short term through Sunday night ...
westerly wind gusts may reach 20-25kts for a time Monday afternoon
in the outer waters... But in general winds and waves are expected to
remain below SCA levels through the short term forecast period.
Ongoing fog over the waters is expected to dissipate this
sca's may be needed late Tuesday into Wednesday over the outer 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||8 mi||53 min||79°F||59°F||1012.1 hPa|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||16 mi||93 min||SSW 3.9 G 5.8||65°F||63°F||3 ft||1011.5 hPa (+0.6)||62°F|
|WEXM1 - Wells Reserve, ME||35 mi||83 min||WNW 7||78°F||62°F|
|WELM1 - 8419317 - Wells, ME||37 mi||53 min||NW 13 G 19||77°F||61°F||1012.5 hPa|
|44030 - Buoy B0102 - Western Maine Shelf||42 mi||79 min||W 7.8 G 9.7||68°F||64°F||2 ft||1012.5 hPa|
|44032 - Buoy E0104 - Central Maine Shelf||43 mi||79 min||SW 3.9 G 5.8||62°F||60°F||4 ft||1011.1 hPa|
Wind History for Wells, ME(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Portland, Portland International Jetport, ME||11 mi||32 min||WNW 12||10.00 mi||Fair||81°F||59°F||47%||1012.3 hPa|
|Auburn-Lewiston, ME||21 mi||27 min||NW 13 G 21||10.00 mi||Overcast||76°F||57°F||54%||1014.1 hPa|
Wind History from PWM (wind in knots)
|1 day ago||E||E||E||E||E|
|2 days ago|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Prince Point |
Click for Map
Sun -- 04:18 AM EDT -0.93 feet Low Tide
Sun -- 04:22 AM EDT Moonrise
Sun -- 05:50 AM EDT Sunrise
Sun -- 10:33 AM EDT 9.93 feet High Tide
Sun -- 04:31 PM EDT -0.25 feet Low Tide
Sun -- 06:59 PM EDT Moonset
Sun -- 07:36 PM EDT Sunset
Sun -- 10:48 PM EDT 11.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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|Upper Hell Gate (Sasanoa River |
Click for Map
Sun -- 02:27 AM EDT -0.00 knots Slack
Sun -- 04:20 AM EDT Moonrise
Sun -- 04:41 AM EDT -1.07 knots Max Ebb
Sun -- 05:49 AM EDT Sunrise
Sun -- 08:30 AM EDT 0.00 knots Slack
Sun -- 11:33 AM EDT 1.04 knots Max Flood
Sun -- 03:00 PM EDT -0.00 knots Slack
Sun -- 05:04 PM EDT -0.94 knots Max Ebb
Sun -- 06:58 PM EDT Moonset
Sun -- 07:34 PM EDT Sunset
Sun -- 08:40 PM EDT 0.00 knots Slack
Sun -- 11:37 PM EDT 1.14 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 (11,2,3,4)(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.