Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Henderson, NY

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:01AMSunset 8:01PM Wednesday April 25, 2018 7:50 PM EDT (23:50 UTC) Moonrise 2:16PMMoonset 3:11AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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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LOZ045 Mexico Bay To The Saint Lawrence River Along Lake Ontario- 131 Pm Edt Wed Apr 25 2018
.small craft advisory in effect from 11 pm edt this evening through Thursday evening...
This afternoon..East winds less than 10 knots. Patchy fog. A chance of showers early, then showers late. Waves 1 foot or less.
Tonight..Light and variable winds becoming southwest 15 to 20 knots. Patchy fog. Rain showers. Waves 1 foot or less building to 4 to 7 feet. Waves occasionally around 9 feet.
Thursday..Southwest winds 10 to 15 knots. Patchy fog in the morning. Showers. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet.
Thursday night..Southwest winds 5 to 15 knots becoming south. Mainly clear. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet.
Friday..South winds 10 knots or less becoming southwest. A chance of rain showers. Waves 2 feet or less.
Saturday..Southwest winds 5 to 15 knots becoming northwest. A chance of rain showers. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 1 to 3 feet. Waves occasionally around 6 feet.
Sunday..Northwest winds 15 to 20 knots diminishing to 5 to 10 knots. A chance of rain showers. Waves 1 to 3 feet building to 3 to 5 feet. Waves occasionally around 6 feet.
LOZ045 Expires:201804252100;;021456 FZUS51 KBUF 251742 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 131 PM EDT Wed Apr 25 2018 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LOZ045-252100-

7 Day Forecast for Marine Location Near Henderson, NY
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location: 43.93, -76.25     debug


Area Discussion for - Buffalo, NY
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Fxus61 kbuf 252052
afdbuf
area forecast discussion
national weather service buffalo ny
452 pm edt Wed apr 25 2018

Synopsis
Low pressure will move northeastward across new england tonight and
into the canadian maritimes on Thursday. Lingering showers behind
this system tonight will give way to drier weather from west to east
on Thursday as high pressure and drier air builds across the lower
great lakes. Two more weak systems will then bring additional
periods of rain showers Friday and Saturday.

Near term through Thursday
Tonight two shortwave troughs will gradually merge and consolidate
across new york state... While supporting the continued deepening
of an attendant surface low tracking from the mid atlantic coastline
into new england. On the backside of this system... The combination
of a westerly to northwesterly cyclonic upslope flow of cooler
air... Increasing wraparound moisture... And lift attendant to the
northern (and stronger) trough will support relatively high
probabilities of additional rain showers across the bulk of our
region... Save perhaps for portions of far southwestern new york.

Winds will also become breezy with a tightening pressure gradient
over the eastern great lakes between the new england low and high
pressure building into the ohio valley. Low temperatures will drop
into the mid 30s to around 40 tonight with cold air advection
beneath lingering cloud cover. Patchy fog will again become possible
overnight with saturated low levels.

On Thursday the surface low will exit northeast across the saint
lawrence river valley as high pressure builds across western ny from
the ohio valley. Lingering wrap around moisture and upslope flow
will keep a high probability for rain showers east of lake ontario
through the morning which will taper off in the afternoon. Clearing
skies will bring sunshine across western new york by mid late
morning. A lingering pressure gradient will keep some gusty winds 20-
30mph through much of the day. Neutral temperature advection will
support high temps only peaking in the low to mid 50s except upper
40s close to the eastern lake shores. Total additional rainfall from
this afternoon through Thursday will range from one to two tenths of
an inch across the southern tier to three quarters of an inch across
the north country.

Short term Thursday night through Sunday
A weak ridge of high pressure will build into the eastern great
lakes on Thursday night with dry weather and clearing skies. Lows
will be in the mid to upper 30s in most locations.

Weak low pressure will track roughly from eastern virginia to
southern new england on Friday. There remains some model
disagreement on the exact track, with the GFS a bit further north
and wetter than most other model guidance. There is at least a
chance that showers will clip southern and eastern portions of the
cwa on Friday. Expect highs to be in the upper 50s to lower 60s.

By Friday evening a northern stream trough will approach western ny
which will result in a chance of showers for the rest of the area.

Increasing cold advection will drop temperatures back into the mid
to upper 30s for lows by late Friday night, with lower 40s east of
lake ontario.

This trough will usher in colder air and below normal temperatures
for the weekend. Model consensus has 850mb temperatures falling to -
8c as the core of the coldest air moves across the area Saturday
night. This is cold enough for some limited lake enhancement and
also to support snow showers where precipitation still lingers
Saturday night into Sunday. Showers will be light with little if any
accumulation, but this will be perhaps one last taste of winter
before the warm up next week. The forecast hedges below most mos
based guidance due to high forecast confidence in the cold airmass
and the likely lake enhanced cloud cover during much of the
weekend. Highs will only be in the 40s over the weekend, with
overnight lows near or below freezing on Saturday night.

Long term Sunday night through Wednesday
The anomalously cold upper-level trough will exit the region into the
canadian maritimes Sunday night and Monday. Meanwhile, building
500mb heights and an expansive surface high over the tennessee
valley will become centered along the carolinas which will initiate
a strong warning trend across our region. The surface high along the
carolinas will pump up a much warmer air mass into the ohio valley
and great lakes which will send high temperatures soaring some +15-
20f degrees above climo by Wednesday with mid-upper 70s, even a
few 80f readings. Late in the week, latest guidance shows a
potent shortwave dropping southeast out of canada across the
great lakes while several waves ride northeast along a frontal
boundary to our west. This will likely bring increasing chances
for showers Thursday and Friday. Otherwise, look for relatively
quite weather the first half of the week with dry conditions and
more like summer.

Aviation 21z Wednesday through Monday
Low CIGS and occasional showers will continue across the terminals
into tonight as a trough of low pressure across western and central
new york becomes absorbed into a deepening surface low shifting
north along the east coast. CIGS will remain at MVFR ifr with vis
lowering to ifr in light to moderate showers.

Westerly flow will develop tonight as the surface low shifts from
the mid-atlantic into new england. This will allow additional
showers, low clouds and fog to continue in wrap around moisture.

Expect ifr vis CIGS overnight with CIGS lifting toVFR Thursday
morning with low level drying across western new york. Kart will see
continued chances for showers and low CIGS lingering into the
afternoon.

Outlook...

Thursday night...VFR.

Friday and Saturday... MainlyVFR with a chance of showers.

Sunday... MainlyVFR with a chance of rain or snow showers east
of lake ontario.

Monday...VFR.

Marine
Surface low pressure along the mid atlantic coastline will continue
to deepen tonight as it lifts into new england with westerly winds
freshening tonight into Thursday. Westerly winds will produce
sufficient waves and winds on the southern and eastern shores of
lake ontario for small craft conditions into Thursday night. Light
winds and waves expected through Friday with perhaps waves building
in westerly flow again on Saturday.

Buf watches warnings advisories
Ny... None.

Marine... Small craft advisory from 9 pm this evening to 8 pm edt
Thursday for loz043.

Small craft advisory from 9 pm this evening to 5 pm edt
Thursday for loz042.

Small craft advisory from 11 pm this evening to 11 pm edt
Thursday for loz044-045.

Synopsis... Jjr smith
near term... Jjr smith
short term... Apffel
long term... Ar
aviation... Jjr smith
marine... Jjr smith


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ALXN6 - 8311062 - Alexandria Bay, NY 32 mi50 min 39°F1005.6 hPa (-1.4)
OSGN6 - 9052030 - Oswego, NY 35 mi50 min Calm G 1 48°F 1005.9 hPa (-0.7)48°F
OBGN6 - 8311030 - Ogdensburg, NY 67 mi50 min 50°F 1005.6 hPa (-2.0)
RPRN6 - Rochester, NY 85 mi50 min NNW 12 G 13 43°F 1007.5 hPa (-1.0)

Wind History for Oswego, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watertown, Watertown International Airport, NY13 mi54 minN 07.00 miLight Rain53°F53°F100%1005.5 hPa

Wind History from ART (wind in knots)
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Last 24hrCalmCalmCalmCalmSW3CalmCalmSW3SW3CalmCalmE4NE4NE7NE7NE7E6E5E3E4S4S3CalmCalm
1 day agoNE3E3E5SE3S7S6S6S8S6S7S7S6S8
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2 days agoSW3CalmCalmCalmE3E5E3E5E5E5CalmE4E3N3454SW7W9W6W7W5NW4W5

Tide / Current Tables for
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Tide / Current Tables for
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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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Buffalo, NY (19,4,5,8)
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Ground Weather Radar Station Montague, 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.