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Marine Weather and Tides
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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 5:16AM | Sunset 8:19PM | Friday July 19, 2019 12:07 AM EDT (04:07 UTC) | Moonrise 10:10PM | Moonset 7:45AM | Illumination 96% |  |
ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 1005 Pm Edt Thu Jul 18 2019
Overnight..NE winds around 5 kt. Seas around 2 ft.
Fri..E winds around 5 kt, becoming S 5 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft.
Fri night..SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft.
Sat..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 2 to 3 ft.
Sat night..W winds 5 to 10 kt. Seas around 2 ft.
Sun..SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms. Some tstms may produce gusty winds.
Sun night..W winds around 5 kt. Seas around 2 ft. A chance of showers. A chance of tstms. Some tstms may produce gusty winds in the evening.
Mon..NE winds around 5 kt. Seas 1 foot or less.
Mon night..W winds 5 to 10 kt. Seas 1 foot or less. A chance of showers.
Tue..NE winds 5 to 10 kt. Seas 1 foot or less.
Tue night..W winds around 5 kt. Seas around 2 ft. Winds and seas higher in and near tstms.
Overnight..NE winds around 5 kt. Seas around 2 ft.
Fri..E winds around 5 kt, becoming S 5 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft.
Fri night..SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft.
Sat..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 2 to 3 ft.
Sat night..W winds 5 to 10 kt. Seas around 2 ft.
Sun..SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms. Some tstms may produce gusty winds.
Sun night..W winds around 5 kt. Seas around 2 ft. A chance of showers. A chance of tstms. Some tstms may produce gusty winds in the evening.
Mon..NE winds around 5 kt. Seas 1 foot or less.
Mon night..W winds 5 to 10 kt. Seas 1 foot or less. A chance of showers.
Tue..NE winds 5 to 10 kt. Seas 1 foot or less.
Tue night..W winds around 5 kt. Seas around 2 ft. Winds and seas higher in and near tstms.
ANZ100 1005 Pm Edt Thu Jul 18 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure moves east tonight with a southerly flow beginning over the gulf of maine on Friday. A warm front moves in from the west Friday night with winds shifting to the west behind it for Saturday. A cold front drops down from the north on Sunday and crosses the gulf of maine Sunday night before stalling off the southern new england coastline for the next few days. &&
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure moves east tonight with a southerly flow beginning over the gulf of maine on Friday. A warm front moves in from the west Friday night with winds shifting to the west behind it for Saturday. A cold front drops down from the north on Sunday and crosses the gulf of maine Sunday night before stalling off the southern new england coastline for the next few days. &&
7 Day Forecast for Marine Location Near Kennebunk, ME
Hourly EDIT Helplocation: 43.32, -70.56 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 190210 afdgyx area forecast discussion national weather service gray me 1010 pm edt Thu jul 18 2019 Synopsis High pressure moves east tonight with a warm southerly wind beginning on Friday. A hot and humid air mass will begin building into the area. New hampshire will feel the heat and humidity on Friday, while it spreads to maine on Saturday. Very hot and humid conditions could lead to heat illness for those exposed to the heat. The heat and humidity lingers on Sunday before a cold front moves through and brings cooler and drier weather for next week. Near term until 6 am Friday morning 1010 pm update... Little change to the going forecast. Just a few minor adjustments to temperatures and sky cover based on latest trends in observational data. 7 pm update... Just a few minor adjustments at this time, mainly to sky cover. Have updated skies based on latest trends in satellite imagery, with mostly cloudy skies over much of nh. Gradual clearing should be the trend through midnight but will likely hang on longer than previously forecast (except for southernmost zones where they will hang on much later). Otherwise, little change. Previously... stalled frontal boundary south of new england will keep low level moisture flirting with southern new hampshire overnight as weak onshore flow continues. Hard to say how far inland this ocean stratus will penetrate but dry air tucking in from the north should limit northward progress so just thinking the three southern new hampshire counties will be most likely to see clouds. Remainder of the forecast area will see variable high clouds. Lows will be fairly uniform across the area with readings bottoming out from 55 to 60. Short term 6 am Friday morning through Friday night A warm front will push in from the west on Friday. Boundary layer winds will quickly switch into the southwest pushing any lingering low level moisture out to sea. May see a brief shower in northern zones in better dynamics as the warm front passes. Although the day will start with comfortable humidity levels... Heat and humidity will build Friday afternoon with highs pushing 90 degrees in southern new hampshire and ranging through the 80s elsewhere. Exception will be in the midcoast where southwest flow will hold temps in the 70s. Along with the heat and humidity will come enough instability in western zones for afternoon and evening showers and thunderstorms mainly across western new hampshire. Good uni- directional shear may produce some wind damage with stronger cells but SPC not highlighting the area in a convective outlook. Nashua and manchester briefly touch heat index of 95 but only for an hour in the case of manchester. Considering the marginal situation will hold off on heat advisories in southern new hampshire and will continue with heat watch for those areas for Saturday and Sunday. Diurnal convection will die out Friday evening leaving just variable cloudiness overnight. Looking for a warm and very humid night with lows from the mid 60s north to the mid 70s south. Long term Saturday through Thursday While much of maine misses out on the heat on Friday, that won't be the case for Saturday. With winds shifting to the west, the hot and humid air mass that has been plaguing the midwest will move right in all the way to the coast. With the peak of the hot air over our area on Saturday, afternoon temperatures will soar into the mid to upper 90s. A few 100 degree readings are possible as well. Dewpoints begin the day in the low to mid 70s which will feel quite oppressive. However, models still indicating some drier air will mix down in the afternoon as the boundary layer extends up into the drier air aloft. The drying isn't as dramatic as was seen in the models yesterday, though, so dewpoints falling into the upper 60s to near 70 during the peak heating of the day seems appropriate. This still spells heat index values over 95 for most of the forecast area as well as values near or over 105 degrees in southeast new hampshire. Have decided to maintain the excessive heat watch and in fact expand it eastward slightly as the remains the potential for heat index values over 105 degrees. With the complication of dry |
air mixing down in the afternoon we were not confident enough to upgrade the watch to a warning just yet. However most of the area will likely need a heat advisory. Some thunderstorms forming to our west Saturday afternoon may drift into the region during the evening. If so, it would primarily impact northern parts of the area. Otherwise it will be a warm and humid night with low temperatures in the low to mid 70s for most. A cold front moves southeast toward the area on Sunday, but will take its time making it through the area. As a result we may actually have one more day of the oppressive heat and humidity and we may need additional heat advisories or a continued excessive heat warning. As the front moves down into this humid air mass there is a chance of thunderstorms during the day on Sunday. With decent mid level wind flow and strong low level lapse rates, there will be a chance for these storms to become strong to severe if they occur. The front moves offshore Sunday night with any lingering storms ending during the evening. Drier air will be moving in so temperatures will be able to cool off into the 60s except for perhaps far southern areas where it may stay near 70 again. The front settles south of new england on Monday with any waves tracking east along the front keeping their impacts over southern new england. The air mass behind this front is coming right out of the arctic. If this were january we'd be talking about some bitter cold, but this time of year we will just be seeing some refreshing low humidity with temperatures in the 70s to low 80s for highs for the early part of next week. For the most part it will be dry next week, but the northern stream trough axis shifts toward our area and could bring some showers or thunderstorms primarily in the afternoon. Models don't agree on what day to bring this through, but the potential exists as early as Tuesday. Aviation 02z Friday through Tuesday Short term... Areas of MVFR ceilings in southern new hampshire overnight.VFR Friday through Friday night. Long term...VFR conditions expected as a hot and humid air mass moves into the area. Some thunderstorms are possible in northern areas Saturday evening and area wide on Sunday as a cold front moves through. Marine Short term... No flags as winds remain light over the waters through Friday night. Long term... Light southwest flow continues through Sunday when a cold front drops down from the northwest. This front drops south of the area and stalls south of CAPE cod through early next week. Climate High temperatures this weekend will be hot but are currently forecast to stay below record levels at concord and may approach the record at portland on Saturday. The record highs are as follows: jul 19 concord: 98 in 1977 portland: 95 in 2013 july 20 concord: 101 in 1977 portland: 96 in 1949 july 21 concord: 101 in 1977 portland: 99 in 1977 Equipment The concord, nh ASOS remains out of service. At this time a return to service date is unknown. During the outage, tafs will continue to be issued for concord without amendments scheduled. Climate data for concord will also be affected, although backup sources may be used to fill in data after the fact. The sugarloaf nwr transmitter is off the air until further notice. This will be an extended outage as the tower, which was severely damaged in a winter storm, is rebuilt. Gyx watches warnings advisories Me... None. Nh... Excessive heat watch from Saturday morning through Saturday evening for nhz010-012>015. Marine... None. |
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 |
| WELM1 - 8419317 - Wells, ME | 0 mi | 49 min | N 1 G 1.9 | 1014 hPa | ||||
| WEXM1 - Wells Reserve, ME | 1 mi | 67 min | WNW 1 | 61°F | 56°F | |||
| 44030 - Buoy B0102 - Western Maine Shelf | 12 mi | 123 min | NNE 1.9 G 1.9 | 64°F | 65°F | 2 ft | 1013.9 hPa | |
| BGXN3 - Great Bay Reserve, NH | 23 mi | 82 min | E 1.9 | 59°F | 1014 hPa | 57°F | ||
| IOSN3 - Isle of Shoals, NH | 25 mi | 67 min | NE 1.9 G 1.9 | 64°F | 1013.1 hPa (-1.0) | 59°F | ||
| 44007 - PORTLAND 12 NM Southeast of Portland,ME | 26 mi | 77 min | Calm G 1.9 | 64°F | 64°F | 1 ft | 1013.4 hPa (-0.9) | 59°F |
| CASM1 - 8418150 - Portland, ME | 29 mi | 55 min | 63°F | 60°F | ||||
| 44098 - Jeffrey's Ledge, NH (160) | 42 mi | 29 min | 64°F | 2 ft |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 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 | 9 PM | 10 PM | 11 PM | |
| Last 24hr | -- | S | NE | N | NE G13 | NE G12 | NE G13 | NE G15 | NE G15 | NE G14 | NE G13 | E G13 | E | E | SE | S | S | S | S | E | SW | N | N | N |
| 1 day ago | N | S | SE | W G8 | S | SW | S | W G11 | W G10 | W G10 | W G10 | W | W G10 | W G10 | W G8 | W G9 | W G8 | S | SW | SW | SW | S | SW | W |
| 2 days ago | -- | N | NW | N | NW | NW | W | W | NW | S | S | S | S | S | S G17 | S | S | S | S G16 | S | SW | SE | S | 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 |
| Sanford, Sanford Regional Airport, ME | 9 mi | 71 min | N 0 | 10.00 mi | Fair | 58°F | 55°F | 93% | 1014.4 hPa |
| Rochester - Skyhaven Airport, NH | 19 mi | 76 min | N 0 | 10.00 mi | Fair | 63°F | 54°F | 73% | 1013.4 hPa |
| Pease Air Force Base / Portsmouth, NH | 21 mi | 71 min | N 0 | 10.00 mi | Partly Cloudy | 64°F | 53°F | 69% | 1013.4 hPa |
Wind History from SFM (wind in knots)
| 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 | 9 PM | 10 PM | 11 PM | 12 AM | |
| Last 24hr | Calm | Calm | N | NE | NE | NE | NE | NE | NE | E | NE | E | SE | SE | SE | E | Calm | Calm | Calm | Calm | Calm | |||
| 1 day ago | Calm | SW | Calm | SW | SW | SW | Calm | W | W | W | SW | SW | W | W | W | SW | W | SW | S | SW | W | Calm | W | |
| 2 days ago | Calm | Calm | Calm | W | W | SW | Calm | SW | S | W | W G14 | SW G16 | SW | W | W | SW | SW | S | S | Calm | Calm |
Tide / Current Tables for Wells, Webhannet River, Maine
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
EDIT (on/off) Help One Week of DataPortsmouth Harbor Entrance
Click for Map
Fri -- 02:54 AM EDT -0.00 knots Slack
Fri -- 05:20 AM EDT Sunrise
Fri -- 05:47 AM EDT -1.95 knots Max Ebb
Fri -- 07:46 AM EDT Moonset
Fri -- 09:49 AM EDT 0.00 knots Slack
Fri -- 11:38 AM EDT 1.00 knots Max Flood
Fri -- 03:32 PM EDT -0.00 knots Slack
Fri -- 06:04 PM EDT -1.55 knots Max Ebb
Fri -- 08:17 PM EDT Sunset
Fri -- 09:52 PM EDT 0.00 knots Slack
Fri -- 10:10 PM EDT Moonrise
Fri -- 11:48 PM EDT 1.13 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:54 AM EDT -0.00 knots Slack
Fri -- 05:20 AM EDT Sunrise
Fri -- 05:47 AM EDT -1.95 knots Max Ebb
Fri -- 07:46 AM EDT Moonset
Fri -- 09:49 AM EDT 0.00 knots Slack
Fri -- 11:38 AM EDT 1.00 knots Max Flood
Fri -- 03:32 PM EDT -0.00 knots Slack
Fri -- 06:04 PM EDT -1.55 knots Max Ebb
Fri -- 08:17 PM EDT Sunset
Fri -- 09:52 PM EDT 0.00 knots Slack
Fri -- 10:10 PM EDT Moonrise
Fri -- 11:48 PM EDT 1.13 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 9 pm | 10 pm | 11 pm |
| 1 | 0.7 | 0.5 | -0.1 | -1 | -1.8 | -1.9 | -1.8 | -1.4 | -0.8 | 0.2 | 0.9 | 1 | 0.8 | 0.7 | 0.4 | -0.4 | -1.2 | -1.6 | -1.4 | -1.1 | -0.7 | 0.1 | 0.9 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of Northeast 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 (0,6,7,8)
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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. |