Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Pittsfield, NH

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 6:25AMSunset 7:10PM Thursday March 30, 2017 4:26 PM EDT (20:26 UTC) Moonrise 8:17AMMoonset 10:21PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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- 333 Pm Edt Thu Mar 30 2017
Tonight..N winds 5 to 10 kt. Seas 2 to 4 ft.
Fri..NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain or snow in the afternoon with vsby 1 to 3 nm.
Fri night..E winds 10 to 20 kt. Gusts up to 30 kt after midnight. Seas 2 to 4 ft. Snow, rain. Vsby variable to less than one quarter nm.
Sat..NE winds 15 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Snow, rain. Vsby variable to less than one quarter nm.
Sat night..N winds 15 to 20 kt...diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain or snow in the evening. Vsby 1 to 3 nm.
Sun..NW winds 5 to 10 kt. Seas 3 to 5 ft.
Sun night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Mon..W winds 5 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Mon night..S winds 5 to 10 kt. Seas around 3 ft. A chance of rain and snow. Vsby 1 to 3 nm.
Tue..SE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely or a chance of snow. Vsby 1 to 3 nm.
Tue night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. A chance of rain. Vsby 1 to 3 nm.
ANZ100 333 Pm Edt Thu Mar 30 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure crosses the gulf of maine tonight and Friday. Low pressure will move by south of cape cod Friday night into Saturday. Another low may take a similar track next Tuesday.

7 Day Forecast for Marine Location Near Pittsfield, NH
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location: 43.24, -71.19     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 301724
afdgyx
area forecast discussion
national weather service gray me
124 pm edt Thu mar 30 2017

Synopsis
High pressure will gradually build in from the northwest today.

Expect a mostly sunny day with temperatures near normal for
this time of year. Low pressure tracking through the ohio valley
will track off the southern new england coastline Friday night,
spreading snow through northern new england which will last
through the day on Saturday. There may be some rain near the
coast. High pressure follows quickly on the heels of the
departing low Sunday into Sunday night. The next low pressure
system will track south of our area on Tuesday with possibly another
chance of rain or wintry precipitation.

Near term /until 6 pm this evening/
120 pm update... Little change to the going forecast. A lot of
uncertainty remains with the upcoming system. Will be deciding
on any watch to warning/advisory conversions within the next two
hours.

1010 am update... Just a few minor adjustments to the going
forecast at this hour. Have added more cloud cover to
eastern/northern zones as moist low level cyclonic flow is
bringing bkn strato-cu into that region. Otherwise, increased
wind gusts a bit for today with observed gusts around 25 mph.

Otherwise, no changes to winter storm headlines at this time -
will be assessing new data over the next several hours and try
to pin down model trends in low track and temperature profiles.

7am update... Minor update for current conditions and to drop
the small craft advisory for the bays as winds have decreased.

Today will be the Sun before the storm as weak high pressure
will crest over the region this afternoon with partly sunny
skies and temperatures approaching 50 in the south and upper 40s
north.

Short term /6 pm this evening through 6 pm Friday/
Snowstorm Friday night into Saturday for southern nh and
interior western maine...

complex scenario is continuing to evolve for Friday night into
Saturday. Low pressure currently over omaha will move
northeastward over the next 24 hours before deepening and
redeveloping off the coast of new jersey on Saturday. This will
spread precipitation into western new hampshire on Friday
morning and eastwards into maine by Friday evening. Snow will
become heavy at times overnight. The low will move east Saturday
bringing snow to an end.

Track forecast has increased over the past day and confidence is
now high that the low will move nearly dead east from new jersey
passing south of long island and out to sea. Despite the track
confidence considerable uncertainly still exists in the amount
and location of the heaviest precipitation and the precipitation
type.

The more easterly track of the low lends of a sharp cut off in
the amount of precipitation occuring within our cwa. And in fact
precipitation amounts vary from 1.5 - 2 inches along the
massachusetts/new hampshire border in the ct river valley where
there is the highest confidence on high amounts to a widely
varying low confidence 0.25-1.25 inches near jackman in the
northeast. Most of the variability in amounts is due to the
northeastward extent of the heavy precipitation shield and i
have leaned towards the euro for the extent of precipitation as
a middle ground between the wet NAM and drier gfs.

The uncertainty doesn't end with amounts; ptype is still a
concern. Temperatures will be hovering near freezing for most of
the event with the wet bulb temperature as the driving factor
between rain and snow. Just to add some fun there are some hints
at a warm nose to the south which would cause sleet to mix in
along the mass border. Overall have leaned cold with the
temperatures and thus more towards snow and expect and mixing to
go rapidly over to snow as the heaviest amounts move in late
Friday evening.

With so many more questions than answers have opted to hold onto
the winter storm watch with this package but have expanded it
into interior western maine where the temperatures and
precipitation amounts support over 6" of snow.

Long term /Friday night through Wednesday/
A few upslope snow flurries and scattered snow showers will
develop across the highest terrain Sunday night as the system
exits off the east coast. That leaves the forecast area with
dry, high pressure over the region on Monday.

Next system approach from the south Monday night. There is
considerable model to model and run to run differences with the
track of this system with the GFS and ggem bringing some
precipitation to the region on Tuesday, while the euro remaining
further to the south. The general track coming out of the
southeastern states is similar to our Friday/Saturday threat,
however with next weeks system, low level temperatures appear to
be a few degrees warmer than this weeks.

High pressure will follow on Wednesday with little in the way of
cold air associated with it. This sets the stage for another
system passing by to our west as our active pattern continues.

Aviation /18z Thursday through Tuesday/
Short term... VFR conditions will continue today with a slight
chance of MVFR in the mountains this morning as upslope flow
continues. Friday will see conditions rapidly deteriorate to ifr
in snow from west to east. Coastal terminals may see a mix of
rain but interior will be snow. Lifr possible overnight Friday
night into Saturday in snow. Snow will come to an end on
Saturday returning conditions to MVFR and thenVFR.

Long term... GenerallyVFR conditions through the period.

However, ceilings and visibilities will potentially drop on
Monday night and Tuesday as a system approaches from the south.

Marine
Short term... Will hold onto the SCA on the ocean waters today.

High pressure crests over the region before the next storm
brings marginal gale conditions for Saturday night.

Long term... Mainly conditions below SCA through the period.

However, southeasterly winds will increase Monday night into
Tuesday, with SCA conditions and possibly brief gusts into gale
force.

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 only running 5 feet or so at the
time, splash-over nomograms suggest to only expect little or no
impacts along the coastline.

Gyx watches/warnings/advisories
Me... Winter storm watch from Friday afternoon through Saturday
afternoon for mez012-018-019.

Nh... Winter storm watch from Friday morning through Saturday
afternoon for nhz003>013-015.

Marine... Small craft advisory until 8 pm edt this evening for anz150-
152-154.

Near term... Ekster


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 23 mi102 min W 4.1 48°F 1021 hPa22°F
WELM1 - 8419317 - Wells, ME 34 mi39 min NNE 8.9 G 11 46°F 40°F1020.1 hPa
WEXM1 - Wells Reserve, ME 35 mi87 min NNW 8 47°F 17°F
IOSN3 - Isle of Shoals, NH 35 mi27 min SSE 8 G 8 41°F 1020.4 hPa (-1.2)25°F
44030 - Buoy B0102 - Western Maine Shelf 41 mi83 min E 3.9 G 5.8 41°F 40°F2 ft1019.9 hPa

Wind History for Wells, ME
(wind in knots)    EDIT      (on/off)   Help
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NE11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester - Skyhaven Airport, NH14 mi36 minNNW 510.00 miFair48°F17°F29%1019.5 hPa
Concord Municipal Airport, NH17 mi36 minNW 810.00 miFair49°F19°F31%1020.8 hPa
Pease Air Force Base / Portsmouth, NH22 mi89 minN 010.00 miA Few Clouds48°F17°F29%1020.3 hPa
Manchester Airport, NH24 mi34 minW 410.00 miPartly Cloudy48°F15°F27%1021.8 hPa

Wind History from DAW (wind in knots)
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Last 24hrNW18
G25
NW11NW12NW9NW11NW9NW9NW9N9
G16
NW8NW8NW4W3CalmNW7NW6NW12NW11NW7N9NW85CalmNW5
1 day agoCalmE3CalmCalmCalmCalmNW3N4--N3N5N5N4N6N4NW5N4NE3NW5N9NW9NW13NW15
G21
NW15
G27
2 days agoNE8N4N6N6N6N7N5N3N3NW3CalmCalmN3CalmCalmCalmCalmCalmE3CalmCalmSE4S4Calm

Tide / Current Tables for Dover, Cocheco River, Piscataqua River, New Hampshire
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Dover
Click for Map
Thu -- 02:50 AM EDT     8.52 feet High Tide
Thu -- 06:28 AM EDT     Sunrise
Thu -- 08:16 AM EDT     Moonrise
Thu -- 08:59 AM EDT     -1.11 feet Low Tide
Thu -- 03:19 PM EDT     8.18 feet High Tide
Thu -- 07:08 PM EDT     Sunset
Thu -- 09:18 PM EDT     -0.72 feet Low Tide
Thu -- 10:19 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.66.78.18.57.86.13.71.3-0.5-1.1-0.513.25.57.38.17.96.74.72.30.3-0.7-0.40.8

Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
Click for Map
Thu -- 02:39 AM EDT     8.32 feet High Tide
Thu -- 06:28 AM EDT     Sunrise
Thu -- 08:16 AM EDT     Moonrise
Thu -- 09:11 AM EDT     -1.13 feet Low Tide
Thu -- 03:09 PM EDT     8.01 feet High Tide
Thu -- 07:07 PM EDT     Sunset
Thu -- 09:30 PM EDT     -0.73 feet Low Tide
Thu -- 10:19 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.56.78.18.37.55.83.61.4-0.4-1.1-0.70.835.47.287.76.54.62.40.5-0.6-0.60.6

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 (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.