Sunday, May26, 2019 L-36.com


Marine Weather and Tides
Old Greenwich, CT

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 5:25AMSunset 8:16PM Sunday May 26, 2019 4:54 AM EDT (08:54 UTC) Moonrise 1:47AMMoonset 12:24PM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 331 Am Edt Sun May 26 2019
Today..W winds 5 to 10 kt. Seas 1 ft or less, then 1 to 2 ft this afternoon. Slight chance of showers and tstms late.
Tonight..NW winds 5 to 10 kt. Seas 1 ft or less.
Mon..N winds around 5 kt, becoming sw in the afternoon. Seas 1 ft or less.
Mon night..S winds around 5 kt. Seas 1 ft or less. Chance of showers after midnight.
Tue..SE winds 5 to 10 kt. Seas 1 ft or less. Showers likely.
Tue night..E winds around 5 kt. Seas 1 ft or less. Chance of showers in the evening. Chance of tstms. Vsby 1 to 3 nm.
Wed..E winds 5 to 10 kt. Seas 1 ft or less.
Wed night..S winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms in the evening, then chance of showers after midnight. Vsby 1 to 3 nm in the evening.
Thu..W winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms in the afternoon with vsby 1 to 3 nm.
Thu night..W winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms in the evening, then chance of showers after midnight. Vsby 1 to 3 nm in the evening. Winds and seas higher in and near tstms.
ANZ300 331 Am Edt Sun May 26 2019
Synopsis for the long island waters and new york harbor.. A cold front approaches today and passes through this evening, followed by weak high pressure for memorial day. Another warm front will approach late Monday night into Tuesday, and remain just south into Wednesday night as weak low pressure moves along the front just south of long island. The front should lift through by Thursday morning, followed by a cold frontal approach later Thursday.


7 Day Forecast for Marine Location Near Old Greenwich, CT
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location: 41.01, -73.57     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 260729
afdokx
area forecast discussion
national weather service new york ny
329 am edt Sun may 26 2019

Synopsis
A cold front approaches today and passes through this evening,
followed by weak high pressure for memorial day. Another warm front
will approach late Monday night into Tuesday, and remain just south
into Wednesday night as weak low pressure moves along the front just
south of long island. The front should lift through by Thursday
morning, followed by a cold frontal approach later Thursday. The
front may linger into Friday, then weak high pressure may build in
to start next weekend.

Near term through tonight
After some stratus early this morning, skies clear as the
atmospheric column dries out. This, along with an offshore wind
component for much of the area will allow for deep mixing and rapid
heating this morning into early afternoon. Mixing up to 800mb with
temps at this level at 12-13c during the mid-afternoon yields highs
in the lower 90s across NE nj and parts of nyc and adjacent suburbs.

Immediate south coasts will likely be limited to upper 70s lower 80s
with SW component to flow and hybrid afternoon sea breeze
development ahead of thermal troughing and approach of cold front.

Elsewhere, widespread mid to upper 80 degree temps, locally 90
degrees. These temps will be about 15-20 degrees above seasonable.

Surface dewpoints will keep heat index values within a degree or two
of the ambient temperature.

A cold front enters from the NW late in the day and moves through
the rest of area this evening. Ahead of it, a weak thermal trough
will develop across the region. Potential for showers and
thunderstorms will limited in spite of the surface heating and
building instability. Mid-level capping and late dynamic lift with
limited available moisture will serve to limit any activity to
isolated scattered. Any thunderstorms that manage to occur could
have strong wind gusts with the given speed shear and relatively dry
conditions in the sub-cloud layer with an inverted-v profile.

Moisture increases this evening along the cold front but with a more
stable atmosphere. Still, a chance of showers and thunderstorms
remains for some areas until around midnight. Drier air pushes in
overnight behind the cold front.

There is a moderate risk of rip current development today.

Short term Monday
Weak high pressure builds in for memorial day with dry weather and
less humid conditions than today. Mostly sunny with high
temperatures still above normal, but not a warm as today.

There is a low risk of rip current development on Sunday.

Long term Monday night through Saturday
Much of this week will feature quasi-zonal flow aloft, with flat
ridging to the south, and a series of passing shortwave troughs
along with a nearby sfc warm front bringing inclement wx at
times beginning late Mon night. The warm front will approach
late Mon night into Tue with showers, also perhaps a few tstms
by Tue evening as mid levels destabilize, but remain just south
as a weak sfc low develops along it and ripples eastward.

The front should remain south until thu, with one more accompanying
round of showers tstms Wed night, then lift through Thu morning as
the flow aloft amplifies just enough in response to a weakening
upper low shearing out into the plains states. This should make thu
the warmest day of the upcoming work week, with highs in the 80s,
which along with dewpoints in the lower 60s, should provide
sufficient instability for afternoon evening tstms ahead of an
approaching cold front. Storms with the front could be strong
per ECMWF gfs consensus, with sfc-based LI -4c to -6c, mid
level flow 40-50 kt, and maglenta and sweat indices as low as 3
and nearing 300 respectively. Some recent events that looked
greater in the long term have not quite panned out, but the
accompanying air mass for this event is likely to be warmer
and more humid and therefor more unstable.

The sfc front could linger nearby into Fri morning per GFS as it
aligns with the flow aloft. With only slight chance pop this far
out in time. Otherwise weak high pressure should build in to
end the work week and start next weekend, before the next in the
train of disturbances follows possibly for next Sunday.

Aviation 08z Sunday through Thursday
A warm front passes early this morning. A cold front follows
this evening.

MVFR or ifr is expected through 11-13z, mainly in lower
ceilings. A few showers or thunderstorms are possible until 9z.

MVFR and possible ifr improves toVFR, which will prevail
through the day, except in an isolated late day thunderstorm.

Coverage too low for inclusion in the forecast attm.

S SW winds 10 kt or less shift to the W by 11-12z as the warm
front passes. Winds should remain sw-w through the day 10-15 kt
with gusts up to 20 kt. The chance for a S sea breeze at
coastal terminals is low this afternoon.

Winds then shift to the NW by evening and lighten.

Outlook for 06z Monday through Thursday
Late tonight Vfr.

Monday Vfr.

Tuesday MVFR or lower in likely showers. SE gusts to 20 kt
possible near the coast.

Wednesday Chance of MVFR or lower in showers thunderstorms,
mainly in the afternoon and evening.

Thursday Chance of MVFR or lower in showers thunderstorms.

Sw wind gusts 20-25 kt.

Marine
Sub-sca conditions today with W to SW winds averaging around 10 kt,
although a late afternoon southerly coastal jet of 15-20 kt is
possible for the ny bight. Seas mostly 3 to 4 feet. Relatively
tranquil conditions expected for Monday.

Expecting quiet conds with respect to prevailing winds seas through
the longer term. Can't totally rule out onshore flow pushing seas
close to 5 ft on the outer ocean waters late day Tue into tue
evening and again Thu night, or sea breezes gusting to 25 kt thu
afternoon on the near shore ocean waters and the south shore bays of
long island. Tstms may also pose a hazard each late day and
evening during mid week, especially on thu.

Hydrology
No hydrologic impacts are anticipated today tonight and probably for
much of the upcoming week.

Equipment
Nyc NOAA weather radio station kwo35 (162.55 mhz) remains off
the air.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... None.

Synopsis... Jc goodman
near term... Jc
short term... Jc
long term... Goodman
aviation... Pw
marine... Jc goodman
hydrology... Jc goodman
equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KPTN6 - 8516945 - Kings Point, NY 17 mi55 min W 11 G 13 62°F 59°F1015 hPa (-2.6)
BRHC3 - 8467150 - Bridgeport, CT 24 mi61 min S 4.1 G 6 59°F 57°F1013.6 hPa
BATN6 - 8518750 - The Battery, NY 32 mi55 min 61°F 59°F1014.7 hPa (-2.4)
44069 33 mi55 min SW 7.8 G 9.7 60°F 65°F57°F
ROBN4 - 8530973 - Robins Reef, NJ 36 mi55 min WSW 9.9 G 12 62°F 1014.3 hPa (-2.4)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 40 mi61 min 62°F 61°F1014.4 hPa
MHRN6 40 mi55 min SW 9.9 G 12
NWHC3 - 8465705 - New Haven, CT 40 mi55 min SSW 6 G 7 58°F 63°F1014.1 hPa (-3.0)
SDHN4 - 8531680 - Sandy Hook, NJ 44 mi55 min SW 7 G 8.9 62°F 64°F1015.9 hPa (-2.4)
44065 - Entrance to New York Harbor 45 mi35 min WSW 5.8 G 7.8 60°F 59°F1014.6 hPa58°F

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY9 mi2 hrsN 010.00 miOvercast57°F55°F96%1014 hPa
Farmingdale - Republic Airport, NY21 mi62 minSSW 610.00 miOvercast59°F55°F90%1014.2 hPa
New York, La Guardia Airport, NY23 mi64 minSW 710.00 miOvercast64°F55°F73%1013.7 hPa

Wind History from HPN (wind in knots)
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Last 24hrSE3CalmCalmS4S6S765S10
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2 days agoCalmCalmCalmS43S5SE7S6S8S8W10W106S76S6S5S44W10
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Tide / Current Tables for Cos Cob Harbor, Connecticut
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Cos Cob Harbor
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Sun -- 01:46 AM EDT     Moonrise
Sun -- 05:27 AM EDT     Sunrise
Sun -- 05:34 AM EDT     6.92 feet High Tide
Sun -- 12:03 PM EDT     1.20 feet Low Tide
Sun -- 12:24 PM EDT     Moonset
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 06:09 PM EDT     6.99 feet High Tide
Sun -- 08:15 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.33.54.866.86.86.253.82.61.61.21.62.645.46.576.75.84.73.52.4

Tide / Current Tables for Throg's Neck, Long Island Sound, New York Current
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Throg's Neck
Click for Map
Sun -- 12:05 AM EDT     0.85 knots Max Flood
Sun -- 01:46 AM EDT     Moonrise
Sun -- 03:06 AM EDT     -0.00 knots Slack
Sun -- 05:29 AM EDT     Sunrise
Sun -- 06:22 AM EDT     -0.55 knots Max Ebb
Sun -- 09:20 AM EDT     0.00 knots Slack
Sun -- 12:25 PM EDT     Moonset
Sun -- 12:30 PM EDT     0.80 knots Max Flood
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 03:14 PM EDT     -0.00 knots Slack
Sun -- 06:45 PM EDT     -0.56 knots Max Ebb
Sun -- 08:15 PM EDT     Sunset
Sun -- 09:38 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.60.20-0.1-0.4-0.5-0.5-0.3-000.30.70.70.30-0.1-0.3-0.5-0.6-0.4-0.100.2

Weather Map and Satellite Images
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GOES 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 New York City/Upton, NY (4,6,7,8)
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Ground Weather Radar Station Upton, NY
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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.