Saturday, August8, 2020
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Marine Weather and Tides
Falmouth, 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 5:37AMSunset 7:56PM Saturday August 8, 2020 1:53 AM EDT (05:53 UTC) Moonrise 10:34PMMoonset 10:26AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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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ANZ153 Casco Bay- 937 Pm Edt Fri Aug 7 2020
Rest of tonight..S winds around 5 kt late this evening, becoming light and variable. Seas 1 foot or less. Patchy fog late. Vsby variable to less than one quarter nm late.
Sat..E winds around 5 kt, becoming se around 5 kt in the afternoon. Seas 1 foot or less. Patchy fog in the morning. Vsby variable to less than one quarter nm in the morning.
Sat night..SW winds around 5 kt. Seas 1 foot or less.
Sun..SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon.
Sun night..SW winds 5 to 10 kt. Seas around 2 ft.
Mon..SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less.
Mon night..S winds 5 to 10 kt. Seas around 2 ft.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Tue night..SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
Wed..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..SW winds 5 to 10 kt, becoming nw after midnight. Seas 2 to 3 ft.
ANZ100 937 Pm Edt Fri Aug 7 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Weak high pressure builds across the region and into the waters this weekend, drifting east with time. No major weather hazards are expected over the waters although some fog may develop at times, mainly during the overnights. &&


7 Day Forecast for Marine Location Near Falmouth, ME
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location: 43.71, -70.23     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 080141 AAB AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 941 PM EDT Fri Aug 7 2020

SYNOPSIS. Weak high pressure keeps the weekend mostly dry but unsettled conditions loom nearby so can't rule out isolated to scattered rain showers this weekend. Otherwise the forecast period will be highlighted by increasing heat and humidity into next week with occasional chances for showers and thunderstorms, especially mid next week.

NEAR TERM /THROUGH SATURDAY/. 940 PM Update . Forecast is in good shape and have made a few minor changes to lower PoPs across southern NH based on radar imagery. At this point the lower atmosphere is still moistening and will take most of the overnight hours to saturate before any precip can fall. Temperatures are on track for lows in the low/mid 50s north to the lower 60s south.


615 PM Update . Cumulus clouds are slowly dissipating this evening, and temperatures in the 70s and dew points in the 50s are making for a pleasant summer night. Clear skies will allow for fog to develop in some spots before increasing cloud cover arrives overnight from the southwest. Still looks like we may get a sprinkle towards early morning over southern NH, but for ME and the remainder of NH any precipitation should hold off until after sunrise.


Previous discussion . Weak high pressure at the surface keeps the bulk of the area dry for the majority of the time . the fly in the ointment is occasional light shower activity associated with a stationary front draped to our south. A shortwave aloft crosses tonight with isolated showers mainly over southern and western zones though best chances remain to our south closer to the front. At the same time the high pressure center shifts into the maritimes increasing onshore flow. With increasing humidity have increasing chances for fog and stratus development tonight. Stratus is favored more over southern interior zones where moisture depth is greatest and extant clouds prevent much cooling tonight while patchy river valley fog is favored elsewhere. Along the coast may be a mixed bag of low clouds and fog depending on elevation. Otherwise lows will be in the 50s to low- 60s over the area.

SHORT TERM /SATURDAY NIGHT/. Saturday will remain generally unsettled with isolated rain shower activity turning scattered over the higher terrain during the afternoon. Steepening lapse rates behind the departing shortwave trough introduces some chance of thunderstorms, but convection will likely struggle in the afternoon with a warm nose remaining above about h700 as well as subsidence behind the trough, relying on surface destabilization instead. Nonetheless have included a slight chance of thunder starting in the west during the mid- morning hours, expanding east by mid-day. Am expecting fairly widespread cumulus to stratocu clouds tomorrow so am not expecting surface destabilization to be particularly strong in most places; breaks in the clouds may lead to somebody, somewhere getting enough surface warming to pop a thunderstorm.

For temperatures, onshore flow limit warming within a few miles of the coast to the 70s while the interior warms into the low- 80s . possibly into the mid-80s with more sunshine. Precipitation tapers down quickly with sunset and with ridging moving in from the west. Humidity will remain on the higher side, limiting low temperatures to the 50s and 60s.

LONG TERM /SUNDAY THROUGH FRIDAY/. Building heat and humidity will be the main theme during the extended portion of the forecast. Occasional weak disturbances will cross the region through the period as well which could deliver brief periods of widely scattered showers and thunderstorms. The first chance will be on Sunday, but with weak forcing for ascent any thunderstorm activity will be isolated during the afternoon and early evening hours. On Tuesday, western zones stand the best chance at experiencing a a shower and thunderstorm as well. Better chances of more widespread shower and thunderstorm activity will be Wednesday and/or Thursday when more significant height falls are possible based on the latest ensemble guidance. The combination of temperatures and increasing dew point values may lead to the possibility of some zones needed a heat advisory during the Mon-Wed timeframe.

AVIATION /02Z SATURDAY THROUGH WEDNESDAY/. Short Term /through Saturday night/ . VFR prevails with increasing and lowering ceilings tonight. While increasing clouds should preclude widespread fog development, rain showers and high humidity may still bring periods of MVFR ceilings/brief MVFR VSBY to terminals mainly over the south and west through tomorrow. Winds will change direction often with weak disturbances crossing the region but will be generally light.

Long Term . VFR conditions expected through Monday with isolated areas of MVFR conditions across northern terminals due to isolated showers and thunderstorms. VFR/MVFR expected the rest of the week with mainly afternoon scattered showers and thunderstorms possible, especially across northern terminals.

MARINE. Short Term /Through Saturday night/ . All remains quiet over the waters through the first half of the weekend with weak high pressure settling east over the Canadian Maritimes. Seas and winds remain below SCA thresholds.

Long Term . Winds and seas will remain below SCA thresholds with the exception of possibly a few gusts near 25 knots and seas Tuesday night into Thursday.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . None.



NEAR TERM . Hanes SHORT TERM . Casey LONG TERM . Ekster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 4 mi54 min 66°F 63°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 14 mi64 min WNW 3.9 G 3.9 65°F 65°F1 ft1021.2 hPa (-0.5)
WEXM1 - Wells Reserve, ME 31 mi54 min WNW 1.9 63°F 62°F
WELM1 - 8419317 - Wells, ME 32 mi54 min Calm G 2.9 63°F 63°F1021.8 hPa (-0.3)
44030 - Buoy B0102 - Western Maine Shelf 38 mi110 min W 1.9 G 3.9 1 ft
44032 - Buoy E0104 - Central Maine Shelf 46 mi110 min WSW 1.9 G 1.9 68°F 68°F1 ft1020.1 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME6 mi63 minW 410.00 miPartly Cloudy66°F62°F87%1021.7 hPa
Auburn-Lewiston, ME24 mi58 minN 010.00 miFair60°F59°F96%1022.5 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hrW4NW4CalmCalmN3CalmN33NE4E5E5E10E9SE8SE10S8S7S4S5S4S3CalmCalmW4
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2 days agoSW9
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Tide / Current Tables for Presumpscot River Bridge, Maine
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Presumpscot River Bridge
Click for Map
Sat -- 02:48 AM EDT     9.49 feet High Tide
Sat -- 05:38 AM EDT     Sunrise
Sat -- 09:06 AM EDT     0.60 feet Low Tide
Sat -- 10:26 AM EDT     Moonset
Sat -- 03:17 PM EDT     9.05 feet High Tide
Sat -- 07:53 PM EDT     Sunset
Sat -- 09:23 PM EDT     1.17 feet Low Tide
Sat -- 10:34 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.87.99.29.58.87.252.81.20.612.44.46.68.398.87.75.93.82.11.21.32.4

Tide / Current Tables for Doyle Point, Maine
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Doyle Point
Click for Map
Sat -- 02:45 AM EDT     9.40 feet High Tide
Sat -- 05:37 AM EDT     Sunrise
Sat -- 08:59 AM EDT     0.50 feet Low Tide
Sat -- 10:25 AM EDT     Moonset
Sat -- 03:14 PM EDT     8.96 feet High Tide
Sat -- 07:53 PM EDT     Sunset
Sat -- 09:16 PM EDT     0.97 feet Low Tide
Sat -- 10:33 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.97.99.19.48.66.94.72.510.512.54.56.78.28.98.77.55.63.41.811.22.3

Weather Map
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wmap_A
GEOS 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 (1,6,7,8)
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Ground Weather Radar Station Portland, ME
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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.