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Marine Weather and Tides
Version 3.4 |
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 5:13AM | Sunset 8:19PM | Friday July 19, 2019 5:57 AM EDT (09:57 UTC) | Moonrise 10:09PM | Moonset 7:42AM | Illumination 95% |  |
ANZ153 Casco Bay- 316 Am Edt Fri Jul 19 2019
Today..SE winds up to 10 kt, becoming S with gusts up to 20 kt this afternoon. Seas 1 to 2 ft, building to 2 to 3 ft this afternoon. Patchy fog this morning with vsby 1 to 3 nm.
Tonight..SW winds 5 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft.
Sat..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Sat night..SW winds 5 to 10 kt. Seas 1 to 2 ft.
Sun..SW winds around 5 kt. Seas 1 to 2 ft. Showers and tstms likely in the afternoon. Some tstms may produce gusty winds and heavy rainfall in the afternoon.
Sun night..NW winds around 5 kt. Seas 1 to 2 ft in the evening, then 1 foot or less. A chance of showers. A chance of tstms. Some tstms may produce gusty winds and heavy rainfall in the evening.
Mon..NW winds around 5 kt. Seas 1 foot or less. A chance of showers.
Mon night..W winds around 5 kt. Seas 1 foot or less. A chance of showers.
Tue..E winds around 5 kt. Seas 1 foot or less.
Tue night..SW winds around 5 kt. Seas 1 to 2 ft. Winds and seas higher in and near tstms.
Today..SE winds up to 10 kt, becoming S with gusts up to 20 kt this afternoon. Seas 1 to 2 ft, building to 2 to 3 ft this afternoon. Patchy fog this morning with vsby 1 to 3 nm.
Tonight..SW winds 5 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft.
Sat..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Sat night..SW winds 5 to 10 kt. Seas 1 to 2 ft.
Sun..SW winds around 5 kt. Seas 1 to 2 ft. Showers and tstms likely in the afternoon. Some tstms may produce gusty winds and heavy rainfall in the afternoon.
Sun night..NW winds around 5 kt. Seas 1 to 2 ft in the evening, then 1 foot or less. A chance of showers. A chance of tstms. Some tstms may produce gusty winds and heavy rainfall in the evening.
Mon..NW winds around 5 kt. Seas 1 foot or less. A chance of showers.
Mon night..W winds around 5 kt. Seas 1 foot or less. A chance of showers.
Tue..E winds around 5 kt. Seas 1 foot or less.
Tue night..SW winds around 5 kt. Seas 1 to 2 ft. Winds and seas higher in and near tstms.
ANZ100 316 Am Edt Fri Jul 19 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A warm front moves in from the west tonight 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.. A warm front moves in from the west tonight 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 Littlejohn Island, ME
Hourly EDIT Helplocation: 43.78, -70.08 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 190802 afdgyx area forecast discussion national weather service gray me 402 am edt Fri jul 19 2019 Synopsis A hot and humid air mass will begin building into new hampshire today, and spreading 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 pm this evening It's rare that dewpoint is the big sticking point in the forecast in our area, but today is one of those days. The front that pushed south yesterday has allowed us to drop to comfortable dewpoints in the mid 50s across much of the region. The oppressive soup is fairly close with the nyc area reporting dewpoints in the 70s. With a front to our west expect the advection of the humid air throughout the day. The issue is not if it gets here but when. With weak northerly flow extending all the way into nj expect it to take much of the day to surge the moisture back northwards. A number of models want to push the humidity rapidly into the region with upper 60s to 70 degree dewpoints reaching the merrimack river valley by midday. Feel this is a bit aggressive given the drier air in place now and the flow continuing to be northerly through new england. Thus have gone for a slower solution bringing the dewpoints to a more modest yet still sticky mid 60s by peak heating. While we wait for the sticky, hot will be quick to arrive as sunny skies allow temperatures to soar right off the bat. Feel confident with high temperatures in the 90s across the south, with the usual cooling ocean effect on a south flow for the midcoast eastwards. For the heat index to reach the 95 heat advisory threshold we'd need the moisture to arrive by the early afternoon, and with the slower solution discussed above this puts the eastern hillsborough zone just barely into heat advisory for this afternoon. With lower confidence in todays issues and high confidence on Saturday have opted to forgo a headline for today and focus on the weekend threat. Nevertheless for anyone outside the difference between 94 and 96 is purely academic as it will be hot. For those in the northern portion of the area, along the canadian border, heat will not be as much of an issue today however there is a chance for afternoon thunderstorms. With descent shear expected to approach the region, combined with the warm moist surface area there is a chance for any storms that do form to become severe. A close examination of forecast soundings shows a potential fly in the ointment as 500mb temperatures warm enough to create a cap for much of the time. Overall an isolated severe storm is possible through the mountains. Short term 6 pm this evening through 6 pm Saturday *** extremely hot and humid conditions through the weekend *** Saturday the long awaited heat finally moves into the area. Aloft 850mb temperatures soar to over 20c and hold in that range through the weekend. West to southwesterly flow will help to advect warm and humid air into the region. That same west flow will keep the sea breeze at bay allowing all but a stone's throw of the water to push into the 90s. In the merrimack valley through nashua and manchester expect to see temperatures reach 100 in a few locations. While this change may break a psychological barrier it's within 1-2 degrees of the prior forecast. In combination with the heat we'll have humidity. The moisture that will push into the region today will be fully present by tomorrow with dewpoints in the 70s expected across southern new hampshire. For Saturday again have remained someone moderate with the dewpoints as some lower rh air aloft in the 700-850mb layer may be able to mix down just enough to drop the dewpoint a few degrees at peak heating. This uncertainty is what has led to the decision to hold onto the excessive heat watch. Heat index of 105-108 are possible across the region with the most likely zone being eastern hillsborough. Have expanded the watch to include interior york where the west-southwest flow should help to push temperatures up to near 100f. The heat is expected to continue through the weekend and thus the excessive heat watch has been expanded to cover through Sunday. While only a few counties will see 105 heat index, everything south of the mountains will easily reach 95f and thus a heat advisory has been issued for all but the most northern zones. This advisory has also been continued into Sunday although confidence is lower for Sunday in kennebec, waldo, and southern somerset on Sunday. Long term Saturday night through Thursday Saturday night into Sunday a cold front will begin to drift south from canada and into the white mountains and the western maine mountains as a small short wave moves in from the west. Shear and instability will be ample for storms with a few strong ones possible, mainly in the north along the frontogenetic forcing. With such high moisture and warm lower levels, very heavy rainfall will occur under any storms. Hail will likely melt before reaching the ground, but strong westerly flow throughout the layer along with the heavy rain may result in downward momentum transfer of stronger winds aloft in more |
robust cells. Have included heavy rain and gusty winds in the forecast. Signals for showers and thunderstorms during the day Sunday are very impressive despite cloud debris from the morning's convection and less upper level support. Still, the the entire region will see a chance of convection throughout the day, with the coastal plain seeing chances increase in the afternoon and evening as the front approaches the shore. Dew points will be slightly higher on Sunday as opposed to Saturday as they pool ahead of the southeastward moving cold front, so heavy rain flash flooding will be the main concern, as well as gusty winds once again. As for the heat, temperatures rise into the lower to mid 90s Sunday for areas south of the mountains, and above 95f for portions of southern nh and perhaps SW maine. Combined with the slightly higher dew points this would result in widespread heat advisories for areas south of the mountains, with hillsborough, rockingham, and strafford counties in nh (and possibly york co in maine) requiring excessive heat warnings. For these reasons we have extended the excessive heat watch to include Sunday. On Monday we will finally get a break from the heat with a secondary frontal boundary bringing in drier and cooler air. This will knock temperatures back into the 70s and 80s for highs for the remainder of the work week. The front settles to our south and may trigger a few showers, mainly over southern sections. Tuesday will be the driest day of the week, with deep troughing digging into the midwest and slowly shifting towards new england and increasing rain chances for the remainder of the work week. Aviation 07z Friday through Tuesday Short term... Some MVFR clouds linger across the very southern portion of the cwa. Generally drier conditions through sunrise but a few valleys may see a bit of fog with higher residual moisture levels. Moisture will increase throughout the day today, but remainVFR across the region.VFR will hold through the weekend with a chance of thunderstorms in the moutnains. 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, producing tempo MVFR conditions in heavy rain. Marine Short term... Southerly flow will develop today as a front lifts back northwards across the region. As it does a few gusts to 25kts are possible on the outer waters. High pressure will then build in with hot and humid conditions for the weekend. 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... Heat advisory from 11 am Saturday to 7 pm edt Sunday for mez012>014-019>022-024>028. Excessive heat watch from Saturday morning through Sunday evening for mez018-023. Nh... Heat advisory from 11 am Saturday to 7 pm edt Sunday for nhz003>007-009-011. Excessive heat watch from Saturday morning through Sunday evening for nhz008-010-012>015. Marine... None. Near term... Curtis short term... Curtis long term... Hanes |
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 |
| CASM1 - 8418150 - Portland, ME | 12 mi | 63 min | 62°F | 61°F | ||||
| 44007 - PORTLAND 12 NM Southeast of Portland,ME | 18 mi | 67 min | Calm G 1.9 | 61°F | 61°F | 2 ft | 1011.7 hPa (-0.8) | 60°F |
| 44032 - Buoy E0104 - Central Maine Shelf | 39 mi | 113 min | SE 1.9 G 3.9 | 59°F | 60°F | 2 ft | 1011.1 hPa | |
| WEXM1 - Wells Reserve, ME | 39 mi | 57 min | NW 1.9 | 58°F | 55°F | |||
| WELM1 - 8419317 - Wells, ME | 41 mi | 57 min | N 1 G 1.9 | 58°F | 62°F | 1012.6 hPa (-0.4) | ||
| 44030 - Buoy B0102 - Western Maine Shelf | 45 mi | 113 min | N 1.9 G 1.9 | 63°F | 64°F | 2 ft | 1012.1 hPa |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | NE G13 | NE G15 | NE G15 | NE G14 | NE G13 | E G13 | E | E | SE | S | S | S | S | E | SW | N | N | N | N | -- | N | -- | NW | N |
| 1 day ago | 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 | -- | S | NE | N | NE G13 | NE G12 |
| 2 days ago | W | W | NW | S | S | S | S | S | S G17 | S | S | S | S G16 | S | SW | SE | S | N | N | S | SE | W G8 | S | SW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Portland, Portland International Jetport, ME | 15 mi | 66 min | W 4 | 10.00 mi | Mostly Cloudy | 61°F | 55°F | 81% | 1012.6 hPa |
| Auburn-Lewiston, ME | 22 mi | 61 min | N 0 | 10.00 mi | Partly Cloudy | 57°F | 55°F | 93% | 1013.5 hPa |
| Wiscasset Airport, ME | 23 mi | 64 min | N 0 | 10.00 mi | Mostly Cloudy | 56°F | 54°F | 93% | 1012.8 hPa |
Wind History from PWM (wind in knots)
| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | NE | NE | NE | NE | NE | E | NE | E | E | E | SE | SE | S | S | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | W |
| 1 day ago | S | Calm | SW | W | W | W | W G16 | W | W | W | SW | W | W | W | SW | S | S | Calm | Calm | N | Calm | N | NE G16 | NE |
| 2 days ago | W | W | W | Calm | SW | S | S | S | S | S | S | S | S | S | S | S | S | Calm | Calm | S | Calm | SW | SW | SW |
Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine
EDIT Weekend mode (on/off) (on/off) Help One Week of DataChebeague Point
Click for Map
Fri -- 01:10 AM EDT 9.84 feet High Tide
Fri -- 05:15 AM EDT Sunrise
Fri -- 07:29 AM EDT 0.08 feet Low Tide
Fri -- 07:42 AM EDT Moonset
Fri -- 01:47 PM EDT 8.77 feet High Tide
Fri -- 07:33 PM EDT 1.10 feet Low Tide
Fri -- 08:17 PM EDT Sunset
Fri -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:10 AM EDT 9.84 feet High Tide
Fri -- 05:15 AM EDT Sunrise
Fri -- 07:29 AM EDT 0.08 feet Low Tide
Fri -- 07:42 AM EDT Moonset
Fri -- 01:47 PM EDT 8.77 feet High Tide
Fri -- 07:33 PM EDT 1.10 feet Low Tide
Fri -- 08:17 PM EDT Sunset
Fri -- 10:09 PM EDT Moonrise
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 |
| 9.2 | 9.8 | 9.5 | 8 | 5.8 | 3.3 | 1.3 | 0.2 | 0.2 | 1.3 | 3.2 | 5.4 | 7.3 | 8.5 | 8.7 | 8 | 6.4 | 4.2 | 2.3 | 1.3 | 1.2 | 2.1 | 3.9 | 6.1 |
Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
EDIT (on/off) Help One Week of DataUpper Hell Gate (Sasanoa River
Click for Map
Fri -- 01:47 AM EDT 0.90 knots Max Flood
Fri -- 05:14 AM EDT Sunrise
Fri -- 05:47 AM EDT -0.00 knots Slack
Fri -- 07:40 AM EDT Moonset
Fri -- 07:56 AM EDT -0.91 knots Max Ebb
Fri -- 11:49 AM EDT 0.00 knots Slack
Fri -- 02:26 PM EDT 0.83 knots Max Flood
Fri -- 06:25 PM EDT -0.00 knots Slack
Fri -- 08:14 PM EDT -0.68 knots Max Ebb
Fri -- 08:16 PM EDT Sunset
Fri -- 10:07 PM EDT Moonrise
Fri -- 11:40 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:47 AM EDT 0.90 knots Max Flood
Fri -- 05:14 AM EDT Sunrise
Fri -- 05:47 AM EDT -0.00 knots Slack
Fri -- 07:40 AM EDT Moonset
Fri -- 07:56 AM EDT -0.91 knots Max Ebb
Fri -- 11:49 AM EDT 0.00 knots Slack
Fri -- 02:26 PM EDT 0.83 knots Max Flood
Fri -- 06:25 PM EDT -0.00 knots Slack
Fri -- 08:14 PM EDT -0.68 knots Max Ebb
Fri -- 08:16 PM EDT Sunset
Fri -- 10:07 PM EDT Moonrise
Fri -- 11:40 PM EDT 0.00 knots Slack
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 |
| 0.4 | 0.8 | 0.9 | 0.8 | 0.7 | 0.5 | -0.1 | -0.7 | -0.9 | -0.8 | -0.6 | -0.3 | 0.1 | 0.6 | 0.8 | 0.8 | 0.8 | 0.7 | 0.2 | -0.3 | -0.7 | -0.6 | -0.4 | -0.2 |
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 (5,6,7,8)
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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. |