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 4:59AM||Sunset 8:28PM||Saturday June 23, 2018 5:16 PM EDT (21:16 UTC)||Moonrise 4:06PM||Moonset 2:25AM||Illumination 80%|
EDIT (on/off)  Help
|ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 314 Pm Edt Sat Jun 23 2018 |
Tonight..E winds 5 to 10 kt, becoming ne after midnight. Seas 2 to 3 ft. A chance of showers with patchy drizzle. Areas of fog after midnight with vsby 1 to 3 nm.
Sun..NW winds around 5 kt, becoming se in the afternoon. Seas 2 to 3 ft. Patchy fog in the morning. A chance of showers with patchy drizzle in the morning, then a chance of showers in the afternoon. Vsby 1 to 3 nm in the morning.
Sun night..SE winds 5 to 10 kt, becoming N 5 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Showers.
Mon..N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely, mainly in the morning.
Mon night..N winds 5 to 10 kt with gusts up to 20 kt, becoming nw after midnight. Seas 2 to 4 ft.
Tue..NW winds 5 to 10 kt, becoming sw with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Wed..SW winds 10 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed night..S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers.
Thu..S winds 15 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Showers likely.
Thu night..SW winds 10 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft.
|ANZ100 314 Pm Edt Sat Jun 23 2018 |
Synopsis for stonington me to merrimack river ma out to 25 nm.. Broad low pressure crosses the gulf of maine tonight, headed into nova scotia. Another low follows behind it for Sunday night. Northerly winds blow in behind this low on Monday with high pressure building east out of the great lakes. This high crests south of the gulf of maine on Tuesday.
7 Day Forecast for Marine Location Near Kennebunk, MEHourly EDIT Help
Area Discussion for - Gray/Portland, ME  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kgyx 231930|
area forecast discussion
national weather service gray me
330 pm edt Sat jun 23 2018
Warm front lifts northwards across the region overnight bringing
scattered showers. Thunderstorms may develop across southern new
hampshire Sunday with more widespread rain Sunday night as low
pressure crosses the area. High pressure builds east out of the
great lakes on Tuesday and Wednesday. A broad trough swings
cross the northeast on Thursday with showers possible. Then much
warmer air builds in for the rest of the week.
Near term tonight
Scattered showers will continue across the region through the
evening. Low pressure is currently located over lake ontario and
will move northeastwards across london and kitchner ontario
overnight. Ahead of this low a broad warm front and area of lift
extends all the way to the new hampshire seacoast. Scattered
showers will move north across the area and decrease in coverage
With very moist low levels remaining overnight in the wake of
the showers expect areas of both drizzle and fog to form through
morning with low temperatures and dew points remaining in the
Short term Sunday and Sunday night
Sunday morning will see the warm front draped across the
northern portion of new hampshire and western maine. In the
northern portion of the area expect the cloud cover to hold on
throughout the day, making temperatures lower and thunderstorms
less likely although scattered showers are still a concern.
Across southern new hampshire thunderstorms are more likely and
severe thunderstorms can't be ruled out. On the warm side of the
front, temperatures will climb to near 80s with a chance for
sun to break out. If Sun is able to reach the surface the
resulting instability will likely result in scattered
thunderstorms. Forecast soundings show descent CAPE of up to
1200 j kg with around 50kts of 0-6km shear which could be enough
to support a few damaging wind gusts. This threat is still a
low probability scenario depending on how much of the cloud
cover can dissipate in the morning but will be something to keep
an eye on through Sunday morning.
Sunday night will see more widespread rain develop as the low
center tracks from hamilton ontario across new york and
Long term Monday through Saturday
Big picture continues to show a large upper level ridge over the
northwest canada and a downstream trough to the east of that,
keeping round after round of modified arctic high pressure en
route through new england. However, there are signs this pattern
is beginning to change. Cut off low over the rocky mountains
will move east across the continent midweek, arriving in our
area on Thursday as it becomes embedded in the westerlies. As
this trough lifts out, the subtropical ridges will push the
storm track to our north and allow warm, humid air to build into
our area this weekend, bringing summer heat just in time for
Sharp upper trough drops in behind the departing surface low on
Monday with cool temperatures expected and a chance of showers,
drying up as the day GOES on. Monday night into Tuesday morning|
will see high pressure moving through the area leading to good
radiational cooling conditions. Based on expected dewpoints, low
temperatures will be mostly in the 40s, with low 40s or even
upper 30s possible in northern valleys. Dewpoints are higher
than they were with last week's cold, so do not expect a frost
with this one.
Expect gradually warming conditions Tuesday and Wednesday as
high pressure shifts east. Tuesday will be mostly clear, but by
Wednesday the upper trough approaching from the west will bring
in additional cloud cover. Southerly flow will allow the coast
of maine to remain cooler.
Upper trough (the remnant rocky mountain cut off low) will track
across new england Wednesday night into Thursday. Will see a
chance of showers as it does so, but with the surface low
passing to our north any rain will be scattered in nature and
not the widespread drenching that our gardens might want.
High pressure builds out of the southeastern us and into new
england on Friday, with bermuda high pressure to the east
building west as well. The result will be the arrival of a hot
and humid air mass that will likely persist through the weekend.
With our new lower heat advisory criteria, would expect that
heat advisories will be needed during this period, possibly
lasting into early next week.
Aviation 19z Saturday through Thursday
Short term... Ceilings have generally held on asVFR despite
widespread cloud cover today with just the nh seacoast dropping
to MVFR. Showers will continue on and off through the afternoon
with temporary reductions to visibility into the ifr range
during the heaviest showers. Overnight expect the low level
moisture to remain trapped in the area with widespread ifr
conditions in fog and drizzle. Sunday will see conditions
improve to MVFR at daybreak and then toVFR while maintaining
overcast through the day. Again a few showers are expected
areawide with thunderstorms across southern new hampshire.
Long term... Low pressure moves out on Monday, so we should see
conditions improving toVFR area wide, becoming clear Monday
night with patchy valley fog.VFR continues Tuesday and
Wednesday, but increasing clouds are expected Wednesday and
Wednesday night with conditions lowering to ifr by Thursday.
Short term... Quiet conditions over the waters as relatively
weak flow continues.
Long term... As the low moves away on Monday, expect a brief
northerly flow over the gulf of maine. High pressure crests to
the south on Tuesday with southwest flow increasing Wednesday.
Gyx watches warnings advisories
Near term... Curtis
short term... Curtis
long term... Kimble
aviation... Curtis kimble
marine... Curtis kimble
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|
|WELM1 - 8419317 - Wells, ME||0 mi||47 min||NE 7 G 8.9||60°F||62°F||1012.7 hPa|
|WEXM1 - Wells Reserve, ME||1 mi||77 min||N 4.1||61°F||55°F|
|44030 - Buoy B0102 - Western Maine Shelf||12 mi||73 min||NE 14 G 16||58°F||61°F||2 ft||1011.1 hPa|
|BGXN3 - Great Bay Reserve, NH||23 mi||92 min||NNE 2.9||61°F||56°F|
|IOSN3 - Isle of Shoals, NH||25 mi||77 min||ENE 14 G 15||59°F||1011.8 hPa (-2.7)||57°F|
|44007 - PORTLAND 12 NM Southeast of Portland,ME||26 mi||87 min||NE 12 G 14||57°F||58°F||1 ft||1012.8 hPa (-3.0)||56°F|
|CASM1 - 8418150 - Portland, ME||29 mi||47 min||56°F||57°F||1013.1 hPa|
|44098 - Jeffrey's Ledge, NH (160)||42 mi||41 min||61°F||3 ft|
Wind History for Wells, ME(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Sanford, Sanford Regional Airport, ME||9 mi||21 min||NNE 7||10.00 mi||Overcast||57°F||52°F||83%||1013 hPa|
|Rochester - Skyhaven Airport, NH||19 mi||26 min||N 7||10.00 mi||Overcast||58°F||52°F||81%||1011.8 hPa|
|Pease Air Force Base / Portsmouth, NH||21 mi||81 min||NE 5||10.00 mi||Overcast||60°F||51°F||72%||1012.7 hPa|
Wind History from SFM (wind in knots)
|1 day ago||SE||SE||E||NE||Calm||Calm||Calm||N||N||Calm||Calm||Calm||Calm||N||NE||NE||NE||NE||SE||SE||SE|
|2 days ago||SW||SW||S||SW||W||W||W||W||W||W||Calm||W||Calm||Calm||W||N||N||NE||E||E|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Sat -- 02:08 AM EDT 0.19 feet Low Tide
Sat -- 02:24 AM EDT Moonset
Sat -- 05:02 AM EDT Sunrise
Sat -- 08:26 AM EDT 8.87 feet High Tide
Sat -- 02:24 PM EDT 0.38 feet Low Tide
Sat -- 04:06 PM EDT Moonrise
Sat -- 08:26 PM EDT Sunset
Sat -- 08:52 PM EDT 9.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Portsmouth Harbor Entrance |
Click for Map
Sat -- 12:38 AM EDT -1.75 knots Max Ebb
Sat -- 02:25 AM EDT Moonset
Sat -- 04:10 AM EDT 0.00 knots Slack
Sat -- 05:04 AM EDT Sunrise
Sat -- 05:59 AM EDT 0.83 knots Max Flood
Sat -- 07:03 AM EDT 0.79 knots Min Flood
Sat -- 07:58 AM EDT 0.82 knots Max Flood
Sat -- 09:48 AM EDT -0.00 knots Slack
Sat -- 12:41 PM EDT -1.73 knots Max Ebb
Sat -- 04:06 PM EDT Moonrise
Sat -- 04:23 PM EDT 0.00 knots Slack
Sat -- 06:30 PM EDT 1.09 knots Max Flood
Sat -- 07:26 PM EDT 1.06 knots Min Flood
Sat -- 08:19 PM EDT 1.09 knots Max Flood
Sat -- 08:26 PM EDT Sunset
Sat -- 10:25 PM EDT -0.00 knots Slack
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Gray/Portland, ME (17,4,5,8)(on/off)  Help
Ad by Google
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.