Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Falmouth, ME

Version 3.4
NOTICE
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.
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 6:21AMSunset 6:49PM Tuesday September 17, 2019 4:38 PM EDT (20:38 UTC) Moonrise 8:44PMMoonset 9:29AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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- 324 Pm Edt Tue Sep 17 2019
Tonight..NE winds 5 to 10 kt. Seas 1 foot or less. Isolated showers after midnight.
Wed..NE winds 5 to 10 kt. Seas 1 foot or less.
Wed night..E winds around 5 kt, becoming N after midnight. Seas 1 to 2 ft.
Thu..NW winds around 5 kt, becoming S around 5 kt in the afternoon. Seas 1 foot or less.
Thu night..SW winds around 5 kt. Seas 1 foot or less, then 2 to 3 ft after midnight.
Fri..W winds around 5 kt. Seas 3 to 5 ft.
Fri night..NW winds around 5 kt. Seas 3 to 5 ft.
Sat..NW winds around 5 kt. Seas 3 to 5 ft.
Sat night..W winds around 5 kt. Seas 2 to 3 ft.
Sun..SW winds up to 10 kt. Seas 2 to 3 ft.
Sun night..SW winds 5 to 10 kt. Seas 2 to 3 ft.
ANZ100 324 Pm Edt Tue Sep 17 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A backdoor front will cross the waters tonight followed by high pressure for the remainder of the work week. SWell from distant hurricane humberto may arrive on Friday. &&


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 171955
afdgyx
area forecast discussion
national weather service gray me
355 pm edt Tue sep 17 2019

Synopsis
A reinforcing shot of cooler air invades tonight with patchy
frost across the north. High pressure then moves overhead
Wednesday and remains over the region through Saturday. This
will result in some chilly nights, with the potential for a
frost or freeze Tuesday and Wednesday nights in some areas.

Warmer than normal weather is expected late week through at
least Monday.

Near term until 6 pm this evening
Widespread scattered to broken cloud cover continues to blanket
the area in cold advection, as a weak wave aloft crosses north
to south down the backside of a departing trough. Clouds will
tend to dissipate approaching sunset, especially north with very
dry air evident in water vapor satellite imagery at this hour.

Scattered clouds are more likely to hold across southern me nh
closer to the forcing wave.

Short term 6 pm this evening through 6 pm Wednesday
Deep northerly flow behind an exiting trough, in increasingly
amplified flow aloft, continues to transport cool air into the
region through tonight. This brings the first widespread frost
chances to the mountains and areas north, especially behind a
shortwave aloft, crossing overnight. While the wave presents
forecast challenges in possible stratus development overnight,
which would abbreviate radiational cooling, it is expected to
clear the northern counties allowing those locations to drop
into the mid-30's. Thus, a frost advisory has been posted for
coos nh and the northern tier of me zones. Otherwise, expect low
level clouds to plague southern nh late tonight before
scattering out by late morning.

Tomorrow, high pressure builds east into new england with mostly
sunny skies. Am reluctant to go too warm Wednesday with
continued northerly flow, but the column dries dramatically,
leaving little in the way of clouds to limit afternoon highs.

Upper level ridging noses into new england Wednesday night with
another cool, possibly frost night on tap.

Long term Wednesday night through Tuesday
Overview: high pressure is expected to remain over new england
through the upcoming weekend, keeping our region generally dry and
quiet. Our next chance for significant precipitation is not until
Monday when a frontal system is forecast to arrive from the west.

Temperatures will be near normal on Thursday but a warming trend
will push them well above normal on Friday and remain there through
early next week.

Impacts: no significant impacts anticipated.

Details: Thursday begins with surface high pressure nearly overhead
and with an upper level ridge building in from the southwest.

Surface high pressure then remains over new england through the rest
of the work week and through much of the weekend with generally
light winds. The upper level ridge also continues to build over our
region, cresting late Sunday as a large frontal system approaches
from the west. On Sunday, the flow becomes southwesterly ahead of
that system, but the best chances for precipitation will hold off
until Sunday night and Monday. The latest deterministic guidance
continues to have some differences in timing between the faster gfs
and the slower euro, so kept some chance pops into Monday night to
account for those differences.

As mentioned above, an upper level ridge will begin to build into
new england on Thursday, starting a warming trend that will push
temperatures on Friday up to 10 degrees or higher above normal for
this time of year. Above average temperatures will continue through
the weekend and into early next week, but a cooling trend looks to
begin on Tuesday as upper level troughing moves over new england,
pushing temperatures closer to normal.

Areas of fog will be possible in the northern river and mountain
valleys early each morning, particularly on Thursday night as high
pressure remains centered nearly overhead.

Aviation 20z Tuesday through Sunday
Short term...VFR conditions prevail through the short term
period with the exception of ifr fog possible stratus at
leb hie tonight. A lesser, though non- zero, threat of MVFR
ceiling development exists tonight after 03z across southern nh.

Nerly winds go variable overnight, calm in sheltered locations,
as a weak wave crosses, before picking up again tomorrow out of
the ne. Dense valley fog is likely to develop Wednesday night
into Thursday morning.

Long term...VFR conditions are generally expected at all terminals
through the period as high pressure dominates the region. Winds
will generally be light and variable Thursday through Saturday
with southwesterly winds increasing on Sunday ahead of the next
frontal system. Hie and leb may see brief periods of MVFR ifr in
fog in the early mid morning hours each day.

Marine
Short term... Winds and seas remain below SCA criteria during
the short term with building high pressure.

Long term... Surface high pressure is positioned overhead to start
the period, keeping seas and winds below SCA criteria through
Thursday night. Although winds will remain below SCA criteria,
we may see the arrival of long period swell from hurricane
humberto on Friday with SCA conditions possible for the outer
waters through Saturday. Could also see wave heights above 5 ft
in portions of casco bay Friday afternoon and evening.

Gyx watches warnings advisories
Me... Frost advisory from 2 am to 8 am edt Wednesday for mez007>009.

Nh... Frost advisory from 2 am to 8 am edt Wednesday for nhz001-002.

Marine... None.

Synopsis... Casey watson
near term... Casey
short term... Casey
long term... Watson
aviation... Casey watson
marine... Casey watson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 4 mi56 min 65°F 59°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 14 mi48 min Calm G 1.9 62°F 61°F2 ft1019.7 hPa (-0.3)52°F
WEXM1 - Wells Reserve, ME 31 mi98 min SSE 1.9 65°F 54°F
WELM1 - 8419317 - Wells, ME 32 mi50 min S 4.1 G 5.1 1020.7 hPa
44030 - Buoy B0102 - Western Maine Shelf 38 mi94 min ESE 5.8 G 5.8 60°F 62°F2 ft1020.2 hPa
44032 - Buoy E0104 - Central Maine Shelf 46 mi94 min NE 12 G 14 60°F 59°F1 ft1018.6 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME6 mi47 minNNW 710.00 miOvercast65°F48°F54%1020.5 hPa
Auburn-Lewiston, ME24 mi42 minNNE 710.00 miOvercast62°F48°F60%1021.7 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hr------NW6W4NW5W4--W6------W4W5NW6NW5----NE9
G16
N5N10N3N10NW7
1 day agoW11W8W6W6SW5------NW4--N5------Calm--SW3W3W6W11NW14
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2 days agoS9
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S9S6S5S3------------------W4W5----W9W8
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Tide / Current Tables for Presumpscot River Bridge, Maine
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Presumpscot River Bridge
Click for Map
Tue -- 01:34 AM EDT     9.42 feet High Tide
Tue -- 06:22 AM EDT     Sunrise
Tue -- 07:42 AM EDT     0.69 feet Low Tide
Tue -- 09:28 AM EDT     Moonset
Tue -- 01:49 PM EDT     9.44 feet High Tide
Tue -- 06:48 PM EDT     Sunset
Tue -- 08:01 PM EDT     0.60 feet Low Tide
Tue -- 08:43 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.19.29.38.46.64.42.310.71.63.35.57.79.19.48.87.252.81.20.61.12.54.6

Tide / Current Tables for Cliff Island, Luckse Sound, Maine
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Cliff Island
Click for Map
Tue -- 01:31 AM EDT     9.32 feet High Tide
Tue -- 06:21 AM EDT     Sunrise
Tue -- 07:36 AM EDT     0.65 feet Low Tide
Tue -- 09:28 AM EDT     Moonset
Tue -- 01:46 PM EDT     9.35 feet High Tide
Tue -- 06:47 PM EDT     Sunset
Tue -- 07:55 PM EDT     0.56 feet Low Tide
Tue -- 08:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.19.29.28.26.44.12.10.80.71.73.45.67.799.38.674.82.610.61.12.64.7

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 (16,3,4,5)
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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.