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Marine Weather and Tides
Version 3.4 |
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 7:04AM | Sunset 5:42PM | Monday October 23, 2017 8:18 PM EDT (00:18 UTC) | Moonrise 10:32AM | Moonset 8:22PM | Illumination 15% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ152 Coastal Waters From Port Clyde, Me To Cape Elizabeth, Me Out 25 Nm- 715 Pm Edt Mon Oct 23 2017 .small craft advisory in effect from Tuesday morning through Tuesday evening... .gale watch in effect from Tuesday evening through Wednesday evening... Tonight..S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Areas of fog. Areas of drizzle after midnight. Vsby 1 to 3 nm. Tue..S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft, building to 4 to 7 ft in the afternoon. Areas of drizzle in the morning. Areas of fog in the morning. Patchy fog in the afternoon. Vsby 1 to 3 nm. Tue night..S winds 15 to 25 kt, becoming 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 5 to 8 ft, building to 7 to 10 ft after midnight. Patchy fog in the evening. A chance of showers. Vsby 1 to 3 nm in the evening. Wed..S winds 20 to 25 kt, becoming 15 to 25 kt in the afternoon. Gusts up to 35 kt. Seas 8 to 11 ft. Rain. Vsby 1 to 3 nm. Wed night..S winds 10 to 20 kt. Gusts up to 30 kt in the evening. Seas 7 to 10 ft. Rain in the evening, then showers after midnight. Patchy fog. Vsby 1 to 3 nm. Thu..SW winds 10 to 15 kt. Seas 6 to 8 ft. Patchy fog in the morning. Showers likely. Vsby 1 to 3 nm in the morning. Thu night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Showers likely, mainly in the evening. Fri..SW winds 5 to 10 kt. Seas 4 to 6 ft. Fri night..S winds 5 to 10 kt. Seas 4 to 5 ft. Sat..S winds 5 to 10 kt. Seas 3 to 4 ft. Sat night..SE winds around 10 kt. Seas around 3 ft. A chance of showers. | ANZ100 715 Pm Edt Mon Oct 23 2017 Synopsis for stonington me to merrimack river ma out to 25 nm.. A southerly flow will develop over the next couple of days between departing high pressure and a slow moving cold front approaching from the west. South winds will be the strongest Tuesday night and Wednesday when gales will be possible. The front moves offshore Thursday with high pressure building in for Friday and Saturday. |
7 Day Forecast for Marine Location Near Newcastle, ME
Hourly EDIT Helplocation: 44.03, -69.54 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 232324 afdgyx area forecast discussion national weather service gray me 724 pm edt Mon oct 23 2017 Synopsis High pressure will push east of the gulf of maine tonight allowing a slow moving cold front will approach from the west overnight and Tuesday. The front will slowly cross the region Wednesday through Thursday. A ridge of high pressure will build over the region on Friday and will shift offshore on Saturday before the next low pressure system approaches from the southwest late in the weekend. Near term until 6 am Tuesday morning 715 pm update: low clouds have once again moved onshore along the me nh coast and parts of interior southeast nh. With the very moist southeast low level flow, expecting fog and drizzle to gradually develop,m m,ove further inland and overspread much of southern and central areas of the forecast area. Input latest mesonet data. Previous discussion: some clouds continue to move into SRN nh from the south,a and coastal stratus also continues to build up just offshore, but heating is holding it there for now. The coastal stratus should start moving inland during the late afternoon and early evening, with clouds streaming in from the south and and west, and clouding up most places by midnight. Lots of moisture will stream in over the overnight inversion, so look for dz to develop, especially in SE upslope areas. Thinking that large scale forcing will likely hold off until Tuesday, so for the most part look for dz fg tonight. Temps will fall off a bit this evening, but will likely start to rise after midnight, with temps mostly in the mid to upper 50s. Short term 6 am Tuesday morning through 6 pm Tuesday 500 mb closed low over the great lakes will move very slowly ne on Tue and will see several a couple waves of energy move through it, which will help it go thru two cycles of deepening, which will keep sfc low and associated cold front over the great lakes and ny on tue, with just some sct shra, and perhaps some continued spotty dz thru the day on tue. Could see more organized showers in the upslope areas of the whites tue afternoon, but still nothing heavy until Tue night. Highs will rise on increasing s-se winds into the 60s. Mid to upper 60s are expected in the ct valley, SRN nh and SW me, with low to mid 60s in central me and the mid-coast. Dew points will also climb into 60-65 range during the day, so it will start to feel humid as well. Also those S winds will increase, and could see gusts of 25-30 mph in the afternoon, especially on the coast and across the hilltops. Tue night will see the closed low over the great lakes to start making a little better progress to the ne, but it will still be a slow go. This will push the sfc front ewd into nh after midnight. Ahead of the front, expecting a line of convection to form as strong low level jet will be in place just ahead of the front. With the deep moisture ahead of the front, this convection will produce heavy rain, and the possibility of tsra. Any tsra could also help mix down the winds from the jet, and good see some gusts approaching severe levels. Currently, this line should be somewhere in the vicinity of the nh me border around daybreak on wed, and will continue across me Wed morning. This line will likely be responsible for a large part of the rain that falls and could produce an inch to inch and a half in several hours. Long term Tuesday night through Monday A more active weather pattern is expected in the extended with significant precipitation early and again late in the period. In between expect a few more nice weather days. On Wednesday a pronounced cold front will approach the area. Ahead of the front sub tropical moisture will stream north over the region. In addition there are indications of a wave forming on the front. This would slow the eastward speed of the front and potentially prolong rainfall especially over eastern areas. Until the front crosses the air mass remains unstable and could support embedded thunder storms. Will include the chance of this through the day on Wednesday. The front will push east of the area late Wednesday night over w eastern areas and early on Thursday over eastern areas. A cyclonic |
flow aloft as well as a cold pool aloft will help support showers on Thursday. Rainfall amounts will be challenging. With subtropical moisture involved and a slow moving pattern would favor significant rainfall. On the other hand... Models maybe somewhat overdone due to convective elements embedded that models are trying to resolve. A short wave ridge will build over the region Friday into Saturday. Allowing for drying and pleasant conditions. Low pressure and an associated cold front will approach from the great lakes Saturday night and Sunday. A secondary low may form along this front off the southeast coast. This scenario would increase the threat of a soaking rain late Sunday and into Monday. The GFS is about 12 hours faster than the ECMWF with this feature... So the timing of this event is in flux. Temperatures will remain at or above normal through the period with the warmest temperatures expected on Saturday when widespread 60s for highs are expected south of the mountains. Aviation 23z Monday through Saturday Short term... AnyVFR breaks today will end early this evening as low clouds move onshore or develop in moist southerly flow above the diurnal inversion. Most places will see lifr by after midnight as fg dz will be added to the low clouds. Non-coastal terminals will see improvement to ifr, and maybe MVFR for a bit on tue. Coastal terminals will probably be stuck with lifr cigs all day, although vis will improve at times. The only exception will be khie, which will likely stayVFR in the southeast downslope into Tue afternoon. Long term... ifr to lifr conditions possible ahead of approaching cold front Wednesday and Wednesday night. Rain with embedded convection Wednesday with patchy fog Wednesday night. Winds shift to west northwest Thursday resulting in improving conditions.VFR conditions expected to return Friday and Saturday. Marine Short term... Will hold the flags as they are for now. Sca confidence is very high, and will likely begin early tue morning. Gales are still a good bet, but timing is uncertain, and they may only occur in a small time window late Tue night into Wed morning. Seas will begin to push to around 10 ft by early Wed morning. Long term... Wednesday and into Thursday wind and waves at SCA levels and possibly briefly reaching gale conditions in strengthening southerly flow ahead of approaching cold front. Winds shift to west northwest Thursday resulting in subsiding waves. && Hydrology Overall, we are looking at 1-3" of rain across the area between tue and thu, however, the bulk of the rain will fall Tue night and wed. Still, with river levels running very low, mainstream flooding is not expected. However, could see a lot of rain in a short period time as a line of heavy showers and or thunderstorms moves through late Tue night and Wed morning, and this could lead to some poor drainage and minor urban flooding. Tides coastal flooding A slow moving cold front will provide a prolonged period of onshore flow. Seas will build to 10-12 ft in onshore flow, but mostly away from shore. While this is a descent wind wave, all other factors for coastal flooding remain low. We are at an astronomical low point in the tidal cycle with high tide at portland in the 9ft range. Additionally all of the wave is in the wind wave at around 8 seconds with no long period swell. The low tide and short period means that even though there may be around a foot of storm surge it will not be enough to cause problems. Gyx watches warnings advisories Me... None. Nh... None. Marine... Small craft advisory from 8 am to 8 pm edt Tuesday for anz150>154. Gale watch from Tuesday evening through Wednesday evening for anz150>152-154. Near term... Marine |
Weather Reporting Stations
EDIT (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 | 24 mi | 74 min | E 7.8 G 7.8 | 55°F | 55°F | 2 ft | 1023.6 hPa | |
| 44033 - Buoy F0103 - West Penobscot Bay | 29 mi | 74 min | S 5.8 G 5.8 | 55°F | 56°F | 1 ft | 1024.2 hPa | |
| MISM1 - Matinicus Rock, ME | 40 mi | 78 min | ESE 5.1 G 5.1 | 54°F | 1024.4 hPa (-0.8) | 54°F | ||
| CASM1 - 8418150 - Portland, ME | 45 mi | 48 min | 56°F | 55°F | 1023.3 hPa | |||
| 44007 - PORTLAND 12 NM Southeast of Portland,ME | 47 mi | 88 min | SE 5.8 G 7.8 | 55°F | 56°F | 1 ft | 1023.6 hPa (-1.0) | 55°F |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | |
| Last 24hr | NE | NE | N | N | N | NE | N | W | SW | W | SW | SW | W | SW | S | S | S G11 | S G10 | S G7 | S | SE G8 | S | SE | E |
| 1 day ago | N | N | NW | NE | NE | N | N | N | -- | NW | N | N | N | N | NE | E | NE | E | E G14 | E G12 | E | NE G12 | E | NE |
| 2 days ago | NW | S | W G9 | W | NW | NW | -- | N | -- | NE G4 | W | NW | W G6 | W G11 | NW G8 | S G5 | S | N G10 | S G11 | S | NW G9 | S | N | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Wiscasset Airport, ME | 10 mi | 25 min | N 0 | 2.00 mi | Fog/Mist | 56°F | 55°F | 97% | 1024 hPa |
| Rockland, Knox County Regional Airport, ME | 23 mi | 22 min | ESE 4 | 0.50 mi | Light Rain Fog | 55°F | 54°F | 96% | 1024.2 hPa |
| Augusta, Augusta State Airport, ME | 24 mi | 25 min | S 4 | 9.00 mi | Overcast | 55°F | 53°F | 93% | 1023.5 hPa |
Wind History from IWI (wind in knots)
| 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SW | SW | S | S | S | SE | S | SE | Calm | |||
| 1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | E | SE | SE | SE | E | SE | E | E | E | Calm |
| 2 days ago | NW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | Calm | S | SE | S | Calm | Calm | Calm | Calm |
Tide / Current Tables for Newcastle, Maine
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Newcastle Click for Map Mon -- 02:14 AM EDT 9.27 feet High Tide Mon -- 07:03 AM EDT Sunrise Mon -- 08:18 AM EDT 0.96 feet Low Tide Mon -- 10:32 AM EDT Moonrise Mon -- 02:19 PM EDT 9.83 feet High Tide Mon -- 05:40 PM EDT Sunset Mon -- 08:22 PM EDT Moonset Mon -- 08:50 PM EDT 0.31 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 6.7 | 8.5 | 9.2 | 9 | 7.8 | 5.8 | 3.6 | 1.8 | 1 | 1.2 | 2.5 | 4.6 | 7 | 8.9 | 9.8 | 9.6 | 8.5 | 6.5 | 4.1 | 2 | 0.7 | 0.3 | 1 | 2.7 |
Tide / Current Tables for Sheepscot River (off Barter Island), Maine Current
EDIT (on/off) Help One Week of Data| Sheepscot River (off Barter Island) Click for Map Mon -- 02:56 AM EDT -0.00 knots Slack Mon -- 05:38 AM EDT -1.01 knots Max Ebb Mon -- 07:03 AM EDT Sunrise Mon -- 09:13 AM EDT 0.00 knots Slack Mon -- 10:32 AM EDT Moonrise Mon -- 11:12 AM EDT 0.87 knots Max Flood Mon -- 03:06 PM EDT -0.00 knots Slack Mon -- 05:41 PM EDT Sunset Mon -- 06:02 PM EDT -1.14 knots Max Ebb Mon -- 08:23 PM EDT Moonset Mon -- 09:50 PM EDT 0.00 knots Slack Mon -- 11:38 PM EDT 0.75 knots Max Flood Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.6 | 0.4 | 0.3 | -0 | -0.6 | -0.9 | -1 | -0.9 | -0.6 | -0.1 | 0.5 | 0.9 | 0.7 | 0.4 | 0.3 | 0 | -0.4 | -0.9 | -1.1 | -1 | -0.9 | -0.5 | 0.1 | 0.6 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of Northeast EDIT  |
Wind Forecast for Gray/Portland, ME (20,4,5,8)
(on/off) Help |  |  |
Ground Weather Radar Station Portland, ME
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Disclaimer: 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. |