Monday, August10, 2020
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Marine Weather and Tides
Saco, ME

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:40AMSunset 7:53PM Monday August 10, 2020 8:29 PM EDT (00:29 UTC) Moonrise 11:21PMMoonset 12:27PM Illumination 55% Phase: Third Quarter Moon; Moon at 22 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 619 Pm Edt Mon Aug 10 2020
Rest of tonight..SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers with isolated tstms early this evening. Patchy fog with vsby 1 to 3 nm.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog in the morning with vsby 1 to 3 nm.
Tue night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Scattered showers in the afternoon.
Wed night..SW winds 5 to 10 kt with gusts up to 20 kt, becoming nw after midnight. Seas 2 to 3 ft. Scattered showers.
Thu..N winds around 5 kt, becoming E in the afternoon. Seas 2 to 3 ft.
Thu night..S winds around 5 kt, becoming nw after midnight. Seas around 2 ft.
Fri..NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft.
Fri night..NE winds 5 to 10 kt. Seas 2 to 3 ft.
Sat..E winds 5 to 10 kt. Seas 2 to 4 ft.
Sat night..E winds 5 to 10 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms.
ANZ100 619 Pm Edt Mon Aug 10 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Generally light southwesterly flow will continue into midweek. There is the possibility of patchy fog during this period, especially if winds can turn slightly more onshore. A cold front drops southward across the waters Wednesday and will be reinforced Friday morning as high pressure builds in from the north. &&


7 Day Forecast for Marine Location Near Saco, ME
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location: 43.49, -70.45     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 102229 AAA AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 629 PM EDT Mon Aug 10 2020

SYNOPSIS. Warmer and increasingly humid air will persist through Tuesday. A cold front slowly approaches through Tuesday, allowing a few showers and thunderstorms to develop. That cold front will cross the area Wednesday . with a bit less heat and humidity to follow for Friday and the start of next weekend.

NEAR TERM /UNTIL 6 AM TUESDAY MORNING/. 625 PM Update . Adjusted PoPs and weather grids to cover convection arriving from the west. At this time the cells are weakening as they approach from VT, but have kept isolated thunder in. These are developing along and ahead of a couple weak boundaries, one a stationary boundary to our southwest and the other a warm front poorly defined at the surface to our west. As such, we may see activity continue overnight. This will mainly be over the mountains as orographic processes combine with weak waves aloft to provide some additional lift.

Temperatures were adjusted to match the latest ob trends. Fog was also added for the waters overnight. The heat advisory for central/south NH and interior western ME Tuesday remains unchanged at this time.

Previous discussion . It has been a quiet afternoon with the exception of a few isolated showers over northern and eastern portions of the CWA. Any convection should continue to diminish as we head into the evening and overnight hours. Much like last night, areas of patchy fog will be possible in the valleys early Tuesday morning as low temperatures only drop into the lower 60s in the mountains and the mid 60s to near 70s elsewhere.

SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/. There are two main concerns tomorrow: widespread heat and humidity and a chance for showers and thunderstorms.

Will start with the heat as tomorrow should be the warmest day of this most recent stretch of hot and humid weather. Broad high pressure over the eastern U.S. will allow temperatures to rise into the lower to mid 90s Tuesday afternoon with dew points in the upper 60s to lower 70s. This will lead to heat index values above 95 degrees for much of the region and a heat advisory has been issued for those areas. Some locations, particularly in southern NH, will see maximum heat indices closer to 100 degrees. There is admittedly some potential for lower values depending on how convection develops early tomorrow afternoon.

A cold front approaching from the west will provide weak forcing for shower and thunderstorm development beginning in the late morning/early afternoon. The best chances will remain in the mountains where additional forcing from terrain will aid their development, but this activity could provide some temporary relief from the heat in the afternoon and early evening.

As the front nears Tuesday night, we will see continued chances for showers and perhaps a few rumbles of thunder, but again the bulk of this activity will occur over the higher terrain in northern zones.

LONG TERM /WEDNESDAY THROUGH MONDAY/. Overall looking like a fairly quiet extended period coming up. The cold frontal timing on Wed looks to be too early to really capitalize on peak instability and so showers and thunderstorms are expected along the front . widespread strong storms are not anticipated at this time. Temps could make a run for the 90s ahead of the front . and given the dewpoints in the low 70s the heat index values may reach 95. This will be especially true along the coast.

After that the upper trof will swing thru on Fri . and very seasonable temps and humidity is expected for the weekend. Little in the way of precip is expected however . which will exacerbate lingering drought issues.

AVIATION /22Z MONDAY THROUGH SATURDAY/. Short Term . General VFR conditions at all terminals through the short term. Possible brief MVFR/IFR conditions at terminals affected by any SHRA/TSRA, most likely at HIE/LEB.

Long Term . Generally VFR conditions expected thru the remainder of the week. Local MVFR or lower conditions are possible in SHRA/TSRA along the cold front Wed.

MARINE. Short Term . No concerns through Tuesday other than the possibility of an isolated shower or thunderstorm Tuesday afternoon. Winds and seas build over the outer waters Tuesday night ahead of a frontal system.

Long Term . Winds and seas expected to remain below SCA thresholds. Some areas of fog are possible along the coastal waters Wed morning and possibly again Wed night ahead of the cold front.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Heat Advisory from 10 AM to 8 PM EDT Tuesday for MEZ012>014- 018>021-033. NH . Heat Advisory from 10 AM to 8 PM EDT Tuesday for NHZ006>013- 015. MARINE . None.



NEAR TERM . Hanes SHORT TERM . Watson LONG TERM . Legro


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WEXM1 - Wells Reserve, ME 12 mi90 min E 2.9 75°F 69°F
WELM1 - 8419317 - Wells, ME 13 mi60 min E 2.9 G 5.1 72°F 1013.4 hPa
CASM1 - 8418150 - Portland, ME 16 mi60 min 70°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 17 mi100 min ESE 3.9 G 3.9 71°F 68°F1 ft1013 hPa (-0.6)
44030 - Buoy B0102 - Western Maine Shelf 22 mi86 min NW 3.9 G 5.8 1 ft
44073 33 mi86 min SSE 7.8 G 7.8 72°F 65°F
BGXN3 - Great Bay Reserve, NH 36 mi105 min E 1.9 85°F 1013 hPa74°F
IOSN3 - Isle of Shoals, NH 37 mi150 min S 19 G 19 77°F 1012.1 hPa (-1.0)71°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME14 mi39 minSSE 310.00 miPartly Cloudy77°F66°F69%1013.2 hPa
Sanford, Sanford Regional Airport, ME15 mi34 minN 010.00 miFair76°F70°F82%1013.7 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hrS4W4SW4S4SW4SE3SW5W4CalmCalmCalmNW33N5NW4E6E8E4SE9SE8S6S6SE5S3
1 day ago3SW3S4S4SW3SW3SW3SW3CalmCalmSW4Calm34SW5S9S12S9S10S11
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2 days agoS4S3CalmCalmW4CalmW3SE3CalmCalmW3W3W4SW3SW9W4S6S76S9S9S7S8S4

Tide / Current Tables for Biddeford, Saco River, Maine
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Wood Island Harbor, Maine
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Wood Island Harbor
Click for Map
Mon -- 04:16 AM EDT     8.24 feet High Tide
Mon -- 05:41 AM EDT     Sunrise
Mon -- 10:17 AM EDT     1.22 feet Low Tide
Mon -- 12:27 PM EDT     Moonset
Mon -- 04:40 PM EDT     8.40 feet High Tide
Mon -- 07:51 PM EDT     Sunset
Mon -- 10:48 PM EDT     1.38 feet Low Tide
Mon -- 11:20 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.84.46.27.68.2875.43.521.31.42.33.95.77.38.28.47.76.34.52.71.61.4

Weather Map
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wmap_A
GEOS 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 (20,4,5,8)
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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 numerous 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.