Friday, September20, 2019 L-36.com


Marine Weather and Tides
York Harbor, 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 6:26AMSunset 6:46PM Friday September 20, 2019 12:12 PM EDT (16:12 UTC) Moonrise 10:22PMMoonset 12:37PM Illumination 60% 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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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 1014 Am Edt Fri Sep 20 2019
.small craft advisory for hazardous seas in effect through late tonight...
Today..W winds around 5 kt, becoming sw this afternoon. Seas 3 to 5 ft, building to 5 to 8 ft this afternoon.
Tonight..W winds 5 to 10 kt with gusts up to 20 kt, becoming nw after midnight. Seas 5 to 8 ft.
Sat..NW winds around 5 kt, becoming se in the afternoon. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the afternoon.
Sat night..S winds 5 to 10 kt. Seas 2 to 3 ft.
Sun..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Sun night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Mon..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Mon night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Scattered showers.
Tue..NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Tue night..NW winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
ANZ100 1014 Am Edt Fri Sep 20 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure remains in control of the waters through the weekend. SWell from hurricane humberto will also arrive today, increasing near shore waves and rip current activity. As high pressure moves east, a southwest flow develops through the weekend until a cold front crosses the waters Monday night. &&


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 201417 aaa
afdgyx
area forecast discussion... Updated
national weather service gray me
1017 am edt Fri sep 20 2019

Synopsis
High pressure remains over new england through the weekend as
warm and more humid conditions spill in from the northwest over
the top of a large upper level ridge. This will bring several
warm, summer-like days just in time for the start of
astronomical fall. A cold front will move in from the northwest
late Monday with low pressure tracking along it as it moves
through Monday night. This will bring our best chance of showers
Monday and Monday night. Expect temperatures to cool back down
toward normal levels through midweek.

Near term until 6 pm this evening
1012 am update: going forecast is in very good shape and with
this update only needed to match near term trends in
temperatures dewpoints and sky cover.

730am update...

made only a few adjustments to hourly temperatures based on
early morning observations. Also adjusted sky cover as morning
fog not as widespread as expected. No other significant changes.

Original discussion...

after another cool start this morning, we really begin to feel
the warm up today. While the surface high pressure axis remains
near or just west of new england, the upper level ridge will
expand eastward allowing much warmer air to spill in from the
northwest. Temperatures should warm well into the 70s today area
wide, with some readings near 80 possible. Dewpoints will be on
the increase as well with dewpoints in the 50s moving in from
the northeast today ahead of a weak cold front dropping down
through eastern quebec.

Meanwhile at the coast, high swells from offshore hurricane
humberto will arrive in the gulf of maine today. This will
create high surf along the coast, especially the western gulf of
maine from portland southward. A high surface advisory is in
effect for most of the maine and new hampshire coastline aside
from penobscot bay. Wave heights will be on the decrease tonight
into Saturday.

Short term 6 pm this evening through 6 pm Saturday
High pressure still over the area will provide another good
radiational cooling night tonight. It won't be near as cold as
the last few nights, though, as dewpoints will have risen a
good 10 to 15 degrees setting a higher floor for the low
temperatures. Could see some clouds in north and northeast areas
as a frontal boundary drops quietly through. Otherwise expect
clear conditions with fog developing in most valleys, with dense
fog possible in the typical valley fog spots. Temperatures will
only bottom out in the 50s for most, but some upper 40s are
possible in the cold northern and western valleys where
dewpoints will be a bit lower.

Another warm day expected on Saturday. While western areas will
likely be a few degrees warmer than Friday, eastern areas will
be a few degrees cooler in response to cooler air delivered
behind a cold front. Eastern areas top out in the mid 70s while
western areas reach the low to possibly mid 80s.

Long term Saturday night through Thursday
The main story will be very warm temps on Sun to kick off the
extended forecast. Naefs guidance suggests h8 mean temps
somewhere around +14 to +16c... Which under normal mixing
conditions equates to mid to upper 80s high temps. I have
brought SRN nh temps above 85 degrees with this update... Where
swly downsloping winds will help boost local readings. For
reference record highs are in the low 90s to break any daily
records. Regardless it will be a very warm air mass for this
time of year.

A fairly potent trof will swing down thru the northeast
mon... And timing will play a large role in determining afternoon
temps. If the front is on the slower side it will likely be
another very mild day for much of the forecast area S of the
mtns. Even if the front arrives during peak heating... Readings
are expected to be above normal... But more likely remaining in
the 70s.

Increasingly it seems model guidance is in favor of closing off
an upper low over the great lakes... Which helps to delay the
frontal arrival locally. It is possible that pop will need to be
pushed back farther into Mon night or Tue even. The upper low
will meander across the region thru wed... With showery wx
possible under the circulation.

Otherwise the pattern will trend right back to WRN atlantic
ridging and broad SW flow aloft. This will continue the warmer
than normal temps for the foreseeable future.

Aviation 14z Friday through Tuesday
Short term...VFR conditions expected with light winds. However,
valley fog is likely in the usual spots. With greater moisture
around tonight, valley fog may be more widespread and affect
more spots than just hie and leb. Con, mht, and aug could get in
on the fog as well.

Long term... As return flow develops Sat night valley fog will be
a little less widespread with warmer temps expected. Fog would
be most likely in the ct river valley... And hie leb. Upper trof
and cold front will approach mon... With local MVFR or lower
conditions in shra as the boundary crosses the area. Upper trof
will be slow to lift out thru midweek... But shra will become
less and less likely with time and mainly confined to the higher
terrain by wed.

Marine
Short term... Although winds are light offshore with high
pressure near the area, higher swells from distant hurricane
humberto will make their way into the gulf of maine today. A
small craft advisory for seas is in effect. Wave heights may be
slow to fall below 5 ft this evening, but with these being long
period swells the impacts will be low outside of shoals and surf
zones.

Long term... Sw flow will dominate the weekend. Overall the waa
over colder waters should keep winds and seas below sca
thresholds. A trof and associated cold front will cross the
waters mon... With upper low meandering across the area into
midweek. SW returns again as upper low lifts out for the second
half of the week.

Gyx watches warnings advisories
Me... High surf advisory until 10 pm edt this evening for mez023>027.

Nh... High surf advisory until 10 pm edt this evening for nhz014.

Marine... Small craft advisory for hazardous seas until 2 am edt
Saturday for anz153.

Small craft advisory for hazardous seas until 2 am edt
Saturday for anz150-152-154.

Synopsis...

near term... Arnott
short term...

long term...

aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CMLN3 5 mi188 min W 6
BGXN3 - Great Bay Reserve, NH 11 mi87 min WSW 1.9 62°F 1022 hPa51°F
IOSN3 - Isle of Shoals, NH 11 mi72 min WNW 7 G 7 57°F 1021.2 hPa (-0.8)49°F
44030 - Buoy B0102 - Western Maine Shelf 12 mi128 min SSW 1.9 G 3.9 57°F 61°F4 ft1021.9 hPa
WELM1 - 8419317 - Wells, ME 14 mi72 min SSE 5.1 G 5.1 63°F 59°F1021.7 hPa (-0.8)
WEXM1 - Wells Reserve, ME 15 mi72 min ESE 2.9 68°F 53°F
44098 - Jeffrey's Ledge, NH (160) 34 mi64 min 62°F4 ft
44007 - PORTLAND 12 NM Southeast of Portland,ME 38 mi82 min SW 5.8 G 5.8 56°F 58°F3 ft1021.2 hPa (-0.3)50°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 42 mi128 min 62°F
CASM1 - 8418150 - Portland, ME 42 mi72 min 67°F 59°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH10 mi76 minNNW 410.00 miA Few Clouds65°F45°F50%1021.6 hPa
Rochester - Skyhaven Airport, NH18 mi21 minVar 410.00 miFair73°F43°F34%1020.8 hPa
Sanford, Sanford Regional Airport, ME19 mi16 minVar 310.00 miFair73°F48°F41%1021.4 hPa

Link to 5 minute data for KPSM

Wind History from PSM (wind in knots)
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Last 24hrSW5SW4SE5SE8SE6SE5S3CalmCalmCalmCalmCalmCalmCalmCalmNW3NW3CalmCalmCalmW4SW4N4NW4
1 day agoNE11
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E6E8NE10E5SE3S3CalmCalmNW3NW3W3CalmW3NW5W3CalmW3NW3NW5NW5CalmNW7N4
2 days agoN7E7E5CalmSE5E3CalmCalmCalmE3NE6NE8N6N9N6N6N5N6N8N8NE8NE8E12
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Tide / Current Tables for Fort Point, York Harbor, Maine
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Fri -- 01:53 AM EDT     1.06 knots Max Flood
Fri -- 04:29 AM EDT     -0.00 knots Slack
Fri -- 06:27 AM EDT     Sunrise
Fri -- 08:19 AM EDT     -1.63 knots Max Ebb
Fri -- 12:01 PM EDT     0.00 knots Slack
Fri -- 12:37 PM EDT     Moonset
Fri -- 02:15 PM EDT     1.22 knots Max Flood
Fri -- 05:03 PM EDT     -0.00 knots Slack
Fri -- 06:44 PM EDT     Sunset
Fri -- 08:48 PM EDT     -1.74 knots Max Ebb
Fri -- 10:22 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.81.10.70.2-0.1-0.5-1.1-1.6-1.5-1-0.5-00.71.210.50-0.3-0.9-1.5-1.7-1.4-0.9

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.
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Wind Forecast for Gray/Portland, ME (12,3,4,5)
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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.