Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Bowdoinham, ME

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:23AMSunset 7:05PM Wednesday March 29, 2017 1:05 PM EDT (17:05 UTC) Moonrise 7:35AMMoonset 9:04PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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- 939 Am Edt Wed Mar 29 2017
.small craft advisory in effect from 5 pm edt this afternoon through Thursday evening...
This afternoon..N winds around 10 kt...becoming 5 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Tonight..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Thu..N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Thu night..N winds 5 to 10 kt. Seas 1 to 2 ft in the evening... Then 1 foot or less.
Fri..NE winds 5 to 10 kt...becoming se in the afternoon. Seas 1 foot or less.
Fri night..SE winds 5 to 10 kt. Seas 1 foot or less... Then around 2 ft after midnight. Rain or snow. Vsby 1 to 3 nm.
Sat..E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Snow or rain. Vsby 1 to 3 nm.
Sat night..N winds 5 to 10 kt. Seas 2 to 3 ft.
Sun..NW winds 5 to 10 kt. Seas 2 to 3 ft.
Sun night..NW winds 5 to 10 kt. Seas 2 to 3 ft.
ANZ100 939 Am Edt Wed Mar 29 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. Northwesterly flow follows exiting low pressure today and Thursday. Another low pressure will pass south of the waters Friday into the weekend.

7 Day Forecast for Marine Location Near Bowdoinham, ME
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location: 44.01, -69.9     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 291347
afdgyx
area forecast discussion
national weather service gray me
947 am edt Wed mar 29 2017

Synopsis
Behind a departing low pressure system, a northwesterly flow
will introduce cooler and drier air into the region today. High
pressure will build into the region for Thursday. Low pressure
will then approach the region for late Friday into Saturday
with snow and mixed precipitation likely for the region.

Canadian high pressure will then build into the region on
Sunday.

Near term /until 6 pm this evening/
945 am update... A few minor adjustments, mainly to pops and
temperatures for today. Mostly dry weather is expected outside
of nwly upslope regions in the mountains. However, for the next
hour, a very narrow convergence band of rain showers across
franklin, androscoggin, and cumberland counties should persist
for a little bit, then dissipate. Otherwise, we raised snow
amounts a little bit for Fri night-sat, but a full perusal of
the 12z data is needed to assess trends with the upcoming
storm.

730am... Minor update to current conditions. Fog has lifted
along all but the immediate coast.

5am... Just an adjustment to the rain as the showers are now
almost off shore. Fog is beginning to dissipate along the
vermont border as the low moves out.

As of 3am, very damp and foggy conditions across maine and new
hampshire. Temperatures are in the mid 30s across the region
with dewpoints similar. With most of the region still covered in
snow this relatively warmer air has resulted in patches of dense
fog. This fog will dissipate in the early morning with the
morning Sun and developing drier flow.

A low center moving northeast through the gulf of maine today
will bring showers to coastal maine and new hampshire through
mid morning. As the rain departs northwesterly flow will develop
brining drier conditions. Clouds will slowly clear in the south.

In the mountains a few upslope showers will develop.

Short term /6 pm this evening through 6 pm Thursday/
High pressure will build in for tonight and Thursday. High
temperatures will return to the mid 40s south to upper 30s north
with mostly sunny skies and light winds.

Long term /Thursday night through Tuesday/
Still some uncertainty with upcoming storm system at the end of
this week in terms of snowfall projections.

Canadian high pressure will remain entrenched over the forecast
area on Thursday. It will gradually retreat to the north and
east on Friday as low pressure exits the ohio valley.

00z operational model suite and ensemble members are in better
agreement tonight bringing low pressure to the new jersey
coastline Friday night where it will undergo only some modest
intensification. Nevertheless, prolonged period of northeast
flow and warm air advection pattern aloft may very well allow
for steady precipitation Friday into Saturday. Model QPF does
vary however with the euro being the wettest at this time.

Boundary layer temperatures may be an issue over southern areas
are they often are in the late march and early april time
frame. Used ptpye from wet bulb for the initial portion of the
forecast. As the system departs on its easterly track late
Saturday, a plowable snowfall is possible, mainly over interior
locations away from the shoreline.

Canadian high pressure will then reassert itself on Sunday as
more cold air and near or slightly below normal temperatures
advect into the region. This sets the stage for another possible
repeat with low pressure passing by to our south during the
middle of next week. Temperatures initially look a little warmer
for this second event.

Aviation /14z Wednesday through Sunday/
Short term... Generally MVFR through new hampshire and towards
the northwest of maine. The low bringing all this moisture will
move off shore today and expect conditions to improve to MVFR
region wide by mid morning. Conditions will continue to improve
into Thursday with just a chance for MVFR ceilings in snow
showers near the international border.

Long term... Ifr conditions developing Friday with area of lifr
over southern areas possible. These conditions will continue
into Saturday as low pressure passes by to our south. Conditions
improve toVFR on Sunday.

Marine
Short term... Generally calm waters currently. Expect winds to
pick up this afternoon under northwesterly flow as the current
low departs. A small craft advisory has been issued beginning
late this afternoon and extending through the overnight hours.

There isn't really an upper level jet to mix down any strong
winds but cold advection should be enough to reach SCA even in
the bays.

Long term... SCA conditions may occur Friday night into Saturday
as low pressure passes by to our south. SCA conditions possible
once again midweek, next week as yet another area of low
pressure passes by to our south.

Tides/coastal flooding
A very high astronomical tide will occur early Friday morning
with 11.1' expected in portland at around 06z. Onshore winds and
seas will just be beginning to develop at this time. Northeast
flow will be more pronounced during the Saturday afternoon high
tide which is lower at 10.3'. Expect about a 0.5 to 1.0 storm
surge at that time which would bring the storm tide to around
11.0 feet or so. With waves running 5 feet or so at the time,
splash-over nomograms suggest to only expect little in the way
of issues along the coastline.

Gyx watches/warnings/advisories
Me... None.

Nh... None.

Marine... Small craft advisory from 5 pm this afternoon to 8 pm edt
Thursday for anz150>154.

Near term... Ekster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 31 mi47 min 42°F 37°F1016 hPa
44032 - Buoy E0104 - Central Maine Shelf 35 mi121 min N 12 G 14 37°F 39°F3 ft1015.5 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 36 mi75 min N 7.8 G 9.7 39°F 38°F3 ft1016 hPa (+0.3)35°F
44033 - Buoy F0103 - West Penobscot Bay 48 mi121 min NNE 14 G 18 37°F 36°F2 ft1014.9 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wiscasset Airport, ME11 mi12 minVar 410.00 miOvercast44°F30°F60%1016 hPa
Auburn-Lewiston, ME21 mi9 minN 14 G 1810.00 miOvercast42°F26°F53%1017.6 hPa
Augusta, Augusta State Airport, ME22 mi12 minN 12 G 1910.00 miOvercast40°F28°F63%1016.1 hPa

Wind History from IWI (wind in knots)
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Last 24hrCalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3454554
1 day agoE8
G16
E6E8E9E7544Calm33N4CalmCalm3Calm33Calm3SW3CalmCalmCalm
2 days agoS7S8SE8S7S6SW5S4CalmS4S3CalmCalmCalmCalmCalmCalmE4E4E3E5E4E6E7E7

Tide / Current Tables for Bowdoinham, Cathance River, Kennebec River, Maine
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Bowdoinham
Click for Map
Wed -- 02:54 AM EDT     6.80 feet High Tide
Wed -- 06:25 AM EDT     Sunrise
Wed -- 07:34 AM EDT     Moonrise
Wed -- 09:14 AM EDT     -0.80 feet Low Tide
Wed -- 03:20 PM EDT     6.76 feet High Tide
Wed -- 07:03 PM EDT     Sunset
Wed -- 09:03 PM EDT     Moonset
Wed -- 09:34 PM EDT     -0.67 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.35.26.46.86.35.13.31.4-0.1-0.8-0.50.62.44.45.96.76.65.64.12.20.5-0.5-0.60.3

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Wed -- 01:09 AM EDT     1.24 knots Max Flood
Wed -- 05:05 AM EDT     -0.00 knots Slack
Wed -- 06:25 AM EDT     Sunrise
Wed -- 07:20 AM EDT     -1.18 knots Max Ebb
Wed -- 07:33 AM EDT     Moonrise
Wed -- 10:44 AM EDT     0.00 knots Slack
Wed -- 01:32 PM EDT     1.21 knots Max Flood
Wed -- 05:25 PM EDT     -0.00 knots Slack
Wed -- 07:02 PM EDT     Sunset
Wed -- 07:43 PM EDT     -1.20 knots Max Ebb
Wed -- 09:02 PM EDT     Moonset
Wed -- 11:01 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.21.10.90.60.1-0.7-1.1-1.1-0.7-0.30.10.71.21.210.70.3-0.4-1-1.2-0.9-0.4-0

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Gray/Portland, ME (13,3,4,5)
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Ground Weather Radar Station Portland, ME
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weather_mapweather_map weather_map

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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.