Sunday, April30, 2017 L-36.com


Marine Weather and Tides
York Harbor, 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 5:34AMSunset 7:45PM Sunday April 30, 2017 10:50 AM EDT (14:50 UTC) Moonrise 9:22AMMoonset 12:00AM Illumination 21% Phase: Waxing Crescent; Moon at 5 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- 923 Am Edt Sun Apr 30 2017
Rest of today..N winds 10 to 15 kt with gusts up to 25 kt... Becoming se 5 to 10 kt this afternoon. Seas 2 to 4 ft. A slight chance of showers this afternoon.
Tonight..S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of drizzle and rain after midnight.
Mon..SE winds 10 to 15 kt...becoming E in the afternoon. Seas 2 to 4 ft. A chance of rain. Areas of drizzle in the afternoon. Patchy fog in the afternoon.
Mon night..E winds 5 to 10 kt...becoming S 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. Patchy fog in the evening. A chance of rain with areas of drizzle in the evening... Then rain likely after midnight.
Tue..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain.
Tue night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft.
Wed..W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Wed night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Thu..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..SE winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less. Rain likely.
ANZ100 923 Am Edt Sun Apr 30 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build over the waters today before moving off to the east on Monday. A warm front lifts north but remains south of the waters Sunday night and Monday. Low pressure slowly moving northeast out of the great lakes will drive a cold front across the waters by early Tuesday. Additional fronts will cross the waters on through Wednesday before high pressure builds in on Thursday.

7 Day Forecast for Marine Location Near York Harbor, ME
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location: 43.13, -70.64     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 301322
afdgyx
area forecast discussion
national weather service gray me
922 am edt Sun apr 30 2017

Synopsis
High pressure will crest over the region today before shifting
offshore. A warm front will remain south of the region tonight
and Monday and will be followed by an occluded front Monday
night. A trough of low pressure will approach from the west on
Tuesday and will slowly cross the region on Wednesday. High
pressure will gradually build in from the west Wednesday night
and will shift offshore on Thursday as low pressure approaches
from the southwest. Low pressure will slowly move up the east
coast Thursday night through Friday.

Near term /until 6 pm this evening/
9am update... Have increased pops for this afternoon across the
north as the slug of precip currently over cornwall ontario
moves east towards our area. A few more convective showers to
the south of this main warm frontal band may also move through
southern portions of the region.

615 am update... Little change to the going
forecast. Based on near term mesoscale models, will maintain
change to low likely pops across southern nh midday.

Previously...

high pressure at the sfc will continue to build into our region
this morning before shifting offshore late in the day. This high
will deliver much cooler temperatures today. WAA aloft will
quickly get started late this morning and early afternoon and
will result in an increase in clouds. Light rain should begin to
break out across northernmost zones this afternoon and waa
forcing for ascent increases. Further south, it should be mostly
dry today, although we did include some chance pops across
southernmost nh midday/early afternoon as the hrrr continues to
develop showers over upstate ny which then move eastward,
possibly affecting southernmost nh early this afternoon.

Short term /6 pm this evening through 6 pm Monday/
Forcing for ascent increases tonight across our northernmost
zones - mainly coos county into the western me mountains. This
is where a band of rain - locally heavy - will likely set up
later tonight. This band could drop up to an inch of rain
tonight through Monday morning before shifting northward. The
air mass in the western me mountains may actually be cold enough
so that some light icing occurs tonight between 1 and 3 kft as
seen on NAM bufkit profiles.

For the rest of the region to the south of the mountains, we
expect mainly dry weather although some drizzle is likely to
develop later tonight as easterly flow moistens.

The same story can be told for Monday - with an even colder day
in store except perhaps the ct river valley. Cool high pressure
ridging from the northeast will remain entrenched Monday as waa
continues overhead. This will mean cool, cloudy, and drizzly
conditions for most of the area east of the mountains with
highs in the 40s and 50s. In the ct river valley, temps will
likely warm as downsloping occurs... Possibly into the 60s.

Long term /Monday night through Saturday/
Warm front will continue to slowly lift northward
Monday night and will be quickly followed by an occlusion
forecast to shift into western zones by Tuesday morning. Moist
onshore flow will keep low clouds and drizzle going for much of
the night before showers and possibly a few thunderstorms
associated with the occlusion push in from the west after
midnight. Increasing southwest flow will push low level moisture
eastward by Tuesday morning. Lows overnight will range through
the 40s to near 50 degrees.

Upper low and trapped surface reflection will
gradually push in from the west on Tuesday. First
half of the day not looking too bad with a mix of Sun and
clouds. Expect clouds and showers to edge into northwestern
zones during the afternoon. Highs will top out above
normal... Generally ranging through the 60s to near 70.

Upper low will continue to press in from the west
Tuesday night and Wednesday keeping clouds and showers in the
forecast through the period. Lows Tuesday night will range
through the 40s and highs Wednesday in the 50s north and lower
to mid 60s south.

Upper low will gradually lift off to the northeast
Wednesday night as surface high pressure builds in from the
west. Expect clouds and a few stray showers to give way to
partial clearing in the north and clearing skies downwind of the
mountains after midnight. Lows will range through the 30s to
near 40.

Weak ridging will edge in from the west on Thursday
as low pressure approaches from the southwest. After a partly
to mostly sunny morning high clouds will push into southern
zones during the afternoon. Highs will range from the mid 50s
north to mid 60s south.

Low pressure moving in from the southwest will bring
rain back into the region Thursday night and Friday.

Good tropical connection will bring plenty of moisture
along with this system and both the ECMWF and GFS in fairly goo
agreement in placing axis of heaviest precip across southern
new england into the gulf of maine. This would keep flooding
threat low for the area but this situation will have to be
monitored closely through the week in the event models shift
this rainfall axis farther north.

Models diverge for the weekend with the new GFS spinning up
another area of low pressure over the mid atlantic states and
slowly moving this system up the coast bringing more rain to the
area. 12z ECMWF not showing this so forecast confidence rather
low for the weekend.

Aviation /13z Sunday through Thursday/
Short term...VFR conditions are expected today. Conditions are
expected to deteriorate to MVFR tonight followed by ifr or lower
during the day on Monday in low clouds and drizzle.

Long term... Ifr/lifr ceilings Monday night... Improving toVFR
Tuesday. Areas of MVFR ceilings in the mountains Tuesday night
through Wednesday.VFR Wednesday night through Thursday.

Marine
Short term... SCA for the ocean waters until 12z this morning for
gusts around 25 kt. Otherwise, sub-sca conditions expected today
through Monday.

Long term...

sca's likely Monday night into Tuesday.

Fire weather
Cooler conditions are expected today with light winds expected
by late morning. Things moisten up substantially tonight and
Monday with low clouds and drizzle expected - especially Monday.

Rainfall of around an inch is possible across northern nh and
the western me mountains late tonight and early Monday.

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

Nh... None.

Marine... None.

Synopsis...

near term... Curtis
short term...

long term...

aviation...

marine...

fire weather...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 11 mi51 min ENE 12 G 13 44°F 1026 hPa (+1.7)28°F
BGXN3 - Great Bay Reserve, NH 11 mi66 min E 2.9 52°F 1027 hPa31°F
44030 - Buoy B0102 - Western Maine Shelf 12 mi107 min NE 12 G 14 44°F 45°F3 ft1026.1 hPa
WELM1 - 8419317 - Wells, ME 14 mi51 min SE 8 G 11 46°F 46°F1026.6 hPa (+2.0)
WEXM1 - Wells Reserve, ME 15 mi51 min ESE 6 50°F 32°F
44098 - Jeffrey's Ledge, NH (160) 34 mi45 min 45°F4 ft
44007 - PORTLAND 12 NM Southeast of Portland,ME 38 mi121 min N 12 G 14 43°F 44°F2 ft1026.3 hPa (+3.5)29°F
CASM1 - 8418150 - Portland, ME 42 mi51 min 45°F 46°F1025.8 hPa (+1.1)
44029 - Buoy A0102 - Mass. Bay/Stellwagen 42 mi107 min NNE 14 G 16 46°F 47°F3 ft1026 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH10 mi53 minENE 610.00 miMostly Cloudy49°F28°F44%1025.9 hPa
Rochester - Skyhaven Airport, NH18 mi60 minESE 510.00 miFair50°F28°F43%1025.4 hPa
Sanford, Sanford Regional Airport, ME19 mi55 minVar 310.00 miFair49°F27°F43%1027.4 hPa

Wind History from PSM (wind in knots)
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1 day agoCalmW4W4SW6SE6SE8E7S5W6W7W6W5SW4SW5CalmCalmCalmCalmSW3CalmW3CalmSW3SW5
2 days agoCalmCalmSE4CalmCalmSE6E8E7E6E7SE5CalmCalmE3CalmCalmCalmCalmE4CalmCalmCalmCalmCalm

Tide / Current Tables for Fort Point, York Harbor, Maine
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Fort Point
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Sun -- 02:21 AM EDT     10.83 feet High Tide
Sun -- 05:37 AM EDT     Sunrise
Sun -- 09:01 AM EDT     -1.34 feet Low Tide
Sun -- 09:22 AM EDT     Moonrise
Sun -- 03:05 PM EDT     9.56 feet High Tide
Sun -- 07:42 PM EDT     Sunset
Sun -- 09:17 PM EDT     -0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.19.510.710.69.26.941.2-0.7-1.3-0.71.34.16.88.89.69.17.65.42.90.9-00.31.8

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
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Sun -- 12:38 AM EDT     1.80 knots Max Flood
Sun -- 04:13 AM EDT     -0.00 knots Slack
Sun -- 05:37 AM EDT     Sunrise
Sun -- 07:12 AM EDT     -2.48 knots Max Ebb
Sun -- 09:22 AM EDT     Moonrise
Sun -- 11:05 AM EDT     0.00 knots Slack
Sun -- 01:10 PM EDT     1.59 knots Max Flood
Sun -- 04:52 PM EDT     -0.00 knots Slack
Sun -- 07:36 PM EDT     -2.11 knots Max Ebb
Sun -- 07:43 PM EDT     Sunset
Sun -- 11:19 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.81.30.80.2-0.8-1.9-2.5-2.3-1.8-1.1-0.111.61.410.6-0.1-1.2-2-2.1-1.7-1.1-0.3

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 (10,2,3,4)
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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.