Saturday, May25, 2019 L-36.com


Marine Weather and Tides
North Woodstock, NH

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:10AMSunset 8:15PM Saturday May 25, 2019 7:56 AM EDT (11:56 UTC) Moonrise 1:14AMMoonset 11:10AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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- 626 Am Edt Sat May 25 2019
Today..W winds around 5 kt, becoming S this afternoon. Seas 1 foot or less.
Tonight..S winds 5 to 15 kt, becoming 10 to 15 kt after midnight. Seas 2 to 3 ft. Showers in the evening, then showers with a chance of tstms after midnight with vsby 1 to 3 nm.
Sun..S winds 5 to 15 kt with gusts up to 20 kt, becoming sw in the afternoon. Seas 2 to 3 ft. A chance of showers in the morning, then a chance of showers and tstms in the afternoon. Vsby 1 to 3 nm.
Sun night..NW winds around 5 kt. Seas 2 to 3 ft, subsiding to 1 to 2 ft after midnight.
Mon..N winds around 5 kt, becoming W in the afternoon. Seas 1 to 2 ft in the morning, then 1 foot or less.
Mon night..W winds around 5 kt, becoming N after midnight. Seas 1 foot or less.
Tue..SE winds up to 10 kt. Seas 1 foot or less.
Tue night..S winds up to 10 kt. Seas 1 to 2 ft. Showers likely.
Wed..SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Wed night..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 626 Am Edt Sat May 25 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build over the waters this morning before moving offshore this afternoon. A warm front will push east through the region tonight and will be quickly followed by a cold front on Sunday. High pressure will build in from the northwest Sunday night and Monday. High pressure will shift offshore on Tuesday as a warm front approaches from the southwest. The warm front will slowly lift north and east of the region Tuesday night through Wednesday. &&


7 Day Forecast for Marine Location Near North Woodstock, NH
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location: 43.93, -71.58     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 251029
afdgyx
area forecast discussion
national weather service gray me
629 am edt Sat may 25 2019

Synopsis
High pressure will build across northern new england this
morning allowing for a sunny start to the day. A warm front
will approach from the west this afternoon spreading rain
showers across new hampshire and maine from west to east
starting late this afternoon or early evening. A few
thunderstorms will be possible overnight. A cold front will
sweep across the area on Sunday. Other than widely scattered
showers and thunderstorms, Sunday should be a fair weather day.

A secondary cold front drops down across the region Monday, but
the day will be dry. The next weather maker in terms of more
showers looks to arrive Tuesday and Wednesday.

Near term through tonight
625 am update... No changes to the going forecast.

Early morning radiation fog (locally dense) will dissipate by
12z. This will give way to a sunny morning across the forecast
area and allow temperatures to rise into the 70s in most
forecast zones by mid afternoon. However, by then clouds will be
on the increase as a warm front approaches from the west.

Forcing for ascent should be strong enough to allow for showers
to break out across western zones late this afternoon and
especially by early evening. A seabreeze will cool coastal
locations this afternoon.

Short term Sunday
Categorical pops for showers are in the forecast for tonight as
a warm front traverses the forecast area from south to north.

Elevated instability is present in most 00z model guidance later
this evening into the early overnight, so have added a chance
of thunderstorms. Rainfall amounts between a half and three-
quarters of an inch are expected in the mountains overnight with
lesser amounts projected further south.

The main concern for Sunday is whether or not sfc-based
convection will develop during the afternoon hours. Confidence
is low at this time as most guidance take pre-frontal trof and
sweep it offshore by early afternoon as boundary layer winds
turn westerly. This may allow for the mixing out of sfc
dewpoints (and hence sbcape) as well as aid in downward vertical
motion through downsloping. Therefore, we expect thunderstorm
development to be fairly isolated. The best chance for
thunderstorms during Sunday afternoon will be from portland on
north and northeast toward the midcoast where sfc moisture may
be high enough to sustain updrafts capable of producing
thunder. A strong storm or two possible there if enough
instability builds.

Otherwise, Sunday should be a relatively warm and fair-weather
day.

Long term Sunday night through Friday
Big picture:
upper air pattern across north america has been fairly stable
for a little while now and should remain that way through most
of the coming forecast. Most dominant feature is a large trough
over the southwestern us with a high amplitude ridge over the
top of it extending well north through western canada and
alaska. Downstream of this is a trough over hudson bay keeping
things cool and a ridge baking the southeast us. With the ridge
over the southeast and the trough over the southwest, moisture
from the gulf of mexico has been free to flow northward across
the plains where round after round of stormy weather has been
occurring. This moisture then feeds into weather systems
tracking through the westerlies and toward our area. Waves
emerging out of the southwestern trough have taken tracks
northeast through the great plains and then either continued
northeast into the hudson bay low or rounded the top of the
southeast ridge and through new england. A potent wave dropping
south along the canadian west coast today will round the base of
the southwestern trough and then head northeast toward the great
lakes and new england later next week. This wave has the
potential to shift the upper air pattern by flattening the
southeast ridge and allowing the hudson bay low to drift
southeast toward our area late next week and into the weekend.

Sunday night and Monday:
high pressure with arctic origins drops into south central
canada and then shifts through southeast canada and northern new
england behind the cold front which moves through Sunday. This
will shift winds to the northwest with drier air moving in. It
should bring a pretty nice day to our area on Monday as a mostly
clear sky allows the Sun to warm things up into the 70s for most
of the area. Offshore northwest winds keep the sea breeze from
being much of a factor. High pressure axis then moves across
northern new england Monday night setting up a clear and calm
night. Temperatures in northern valleys could drop into the low
to mid 30s with patchy frost possible.

Tuesday and Wednesday:
this will be the more unsettled portion of the forecast as waves
ejecting out of the southwest trough again affect our area. The
first wave emerges into the great plains on Monday with its
destination uncertain. The ECMWF tracks a fairly well developed
surface low around the top of the southeast ridge... Through the
great lakes and into new england on Tuesday. The cmc is slower
with the wave and tracks it northeast through quebec, pulling a
loosely organized warm front through our area Tuesday night. The
gfs is even slower still, nearly losing the wave as it moves
over the great lakes. Regardless of the track of the low, we
should expect a northward push of the warm humid air back toward
our area with a chance of showers or even a period of steady
rain. The most likely timing for this would be late Tuesday into
Tuesday night. With winds becoming south or southeasterly
behind the departing high and ahead of the approaching warm
front, expect cooler conditions especially across western maine
where the wind trajectory is primarily onshore. Southern new
hampshire has the best chance of getting into the warm sector
behind the warm front where 70s and more humid conditions will
be possible through Wednesday.

Thursday:
the next wave emerges onto the great plains Tuesday and moves
into the great lakes Wednesday where it may also be influenced
by a trough rounding the base of the hudson bay low. As these
waves move east they will shift a cold front through new england
likely on Thursday. Timing and track of these waves is also
still uncertain, but the general idea of an upper trough axis
and surface wind shift to the west is fairly consistent with its
most likely arrival on Thursday. As it moves through expect a
chance of showers and maybe some thunderstorms as well depending
on how far northward the warm, moist air is able to push ahead
of it.

Friday and Saturday:
cool high pressure building in behind the front should bring a
dry day with the late may Sun warming things into the low to mid
70s. As the high moves east a more southerly flow develops on
Saturday, so it will be a bit cooler over western maine where
this flow is onshore while it may be a bit warmer in southern
new hampshire but still dry.

Aviation 12z Saturday through Wednesday
Short term... Early morning ground fog will lift by 12z this
morning. Thereafter,VFR conditions are expected for the bulk of
the day. Winds go onshore on the coast by midday. Numerous
showers are expected tonight along with a few embedded
thunderstorms. Areas of ifr conditions are expected. MainlyVFR
conditions are expected on Sunday. However, a few afternoon
showers and thunderstorms may briefly lower CIGS and vsbys.

Long term... High pressure builds in from the northwest Monday
and shifts east early Tuesday withVFR conditions expected. A
warm front tries to lift north into the area as early as late
Tuesday. This should bring increased clouds and ceilings
lowering to MVFR or ifr at times with occasional showers. Could
see some improvement on Wednesday especially if the warm front
is able to lift north of the area.

Marine
Short term... Marginal scas may be needed on the ocean waters
tonight into Sunday.

Long term... Light offshore north to northwest flow expected
through Monday as high pressure builds across southeast canada
and northern new england. As the high shifts east on Tuesday a
south to southeast flow develops. A warm front tries to lift
through the region Tuesday night and Wednesday. If low pressure
is able to develop along this front it could bring a period of
advisory level winds, but for now winds are expected to remain
below 25 kt. A cold front arrives from the west on Thursday.

Gyx watches warnings advisories
Me... Beach hazards statement through this evening for mez023>028.

Nh... Beach hazards statement through this evening for nhz014.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WEXM1 - Wells Reserve, ME 68 mi57 min WNW 5.1 54°F 46°F
WELM1 - 8419317 - Wells, ME 68 mi57 min NNW 5.1 G 7 55°F 48°F1021.9 hPa (+1.8)
BGXN3 - Great Bay Reserve, NH 72 mi72 min W 2.9 51°F 1023 hPa50°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plymouth Municipal Airport, NH14 mi82 minN 00.25 miFog43°F42°F98%1023 hPa

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1 day agoCalmE5CalmNE3CalmNE4E5E5CalmCalmCalmNE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW4W7
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Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
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Sat -- 12:04 AM EDT     1.32 feet Low Tide
Sat -- 01:08 AM EDT     Moonrise
Sat -- 05:10 AM EDT     Sunrise
Sat -- 05:57 AM EDT     6.80 feet High Tide
Sat -- 11:09 AM EDT     Moonset
Sat -- 12:42 PM EDT     0.68 feet Low Tide
Sat -- 06:46 PM EDT     6.22 feet High Tide
Sat -- 08:10 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.62.645.56.56.86.55.64.32.81.50.80.71.32.43.95.266.25.84.93.72.5

Tide / Current Tables for Dover Point, Piscataqua River, New Hampshire
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Dover Point
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Sat -- 01:07 AM EDT     Moonrise
Sat -- 05:11 AM EDT     Sunrise
Sat -- 05:55 AM EDT     6.35 feet High Tide
Sat -- 11:09 AM EDT     Moonset
Sat -- 12:17 PM EDT     0.64 feet Low Tide
Sat -- 06:44 PM EDT     5.81 feet High Tide
Sat -- 08:09 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.72.74.15.36.16.365.13.72.21.20.70.81.52.63.955.75.85.34.43.12.1

Weather Map and Satellite Images
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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.
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Wind Forecast for Gray/Portland, ME (7,2,3,4)
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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.