Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Sylvan Beach, NY

Version 3.4
What's New / NOTES
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.
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.

Sunrise 7:00AMSunset 4:39PM Saturday November 18, 2017 9:01 AM EST (14:01 UTC) Moonrise 6:50AMMoonset 5:11PM Illumination 0% Phase: New Moon; Moon at 29 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
    EDIT      (on/off)   Help
LOZ044 Hamlin Beach To Mexico Bay Along Lake Ontario Including Irondequoit Bay- 653 Am Est Sat Nov 18 2017
.gale warning in effect from late tonight through Sunday evening...
Today..South winds 15 to 20 knots. Occasional rain. Waves 2 feet or less.
Tonight..South winds 15 to 20 knots becoming west and increasing to 35 knot gales overnight. Rain. Waves 1 to 3 feet building to 7 to 10 feet. Waves occasionally around 13 feet.
Sunday..Northwest gales to 35 knots. Rain in the morning, then lake effect rain and snow in the afternoon. Waves 11 to 16 feet. Waves occasionally around 20 feet.
Sunday night..Northwest gales to 35 knots becoming west and diminishing to 15 to 25 knots. Lake effect snow. Waves 10 to 14 feet. Waves occasionally around 18 feet.
Monday..West winds 15 to 25 knots. Lake effect snow with a chance of lake effect rain showers. Waves 5 to 9 feet. Waves occasionally around 11 feet.
Tuesday..Southwest winds 15 to 20 knots. A chance of rain showers Tuesday night. Waves 3 to 6 feet. Waves occasionally around 7 feet.
Wednesday..West winds 15 to 20 knots. A chance of snow showers. Waves 3 to 5 feet. Waves occasionally around 6 feet. The water temperature off rochester is 50 degrees.
LOZ044 Expires:201711181615;;591708 FZUS51 KBUF 181153 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 653 AM EST Sat Nov 18 2017 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. LOZ043-044-181615-

7 Day Forecast for Marine Location Near Sylvan Beach, NY
   Hourly   EDIT   Help
location: 43.17, -75.82     debug


Area Discussion for - Binghamton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbgm 181122
afdbgm
area forecast discussion
national weather service binghamton ny
622 am est Sat nov 18 2017

Synopsis
High pressure will reside over the region this evening then
shift east of the area later tonight. A strong low pressure
system will track west and north of the area this weekend
bringing rain for Saturday and Saturday night followed by gusty
and colder conditions with lake effect snow by late Sunday.

Near term through tonight
400 am update...

main concern is for low pressure system bringing a variety of
weather this weekend, including gusty winds and eventual lake
effect snow Sunday into Monday. See short term portion of the
discussion for details on the winds and snow.

On the front end of the system, we will see rain develop today
and last through tonight. Temperatures as of 3 am widely range
from only 19 in sidney, to 37 in penn yan. However, warm air
just above the surface is surging over the region. Temperatures
will quickly rise this morning as lead shortwave sweeps west-
southwest to east-northeast across the region. Thankfully, pace
of things upstream and now the trend in high resolution models,
is for the initial rain to arrive slightly later this morning
compared to prior thinking. Confidence is thus even higher now
that by the time it actually arrives, temperatures will get
above freezing. We will still have to monitor things closely
just in case near surface temperatures are slow to respond, but
expectations are that it will be all rain.

Temperatures will move up through the day for highs of lower to
mid 40s. Initial wave of rain will press through central twin
tiers to finger lakes, with even a bit of instability aloft to
the point that a rogue rumble of thunder cannot be ruled out.

However, the activity will be running into a good amount of dry
air in the low levels the further east it goes. It may somewhat
break up or at least become significantly lighter as it moves
towards catskills-poconos. Then, as deepening surface low moves
roughly across lake erie late afternoon to western new york
this evening, stronger wave aloft will also sweep across the
area with deep moisture to produce our main areawide rainfall of
about a half to three quarters of an inch or so. When adding up
all of today through tonight, a few of our more orographic-
lift prone higher elevation spots could end up to nearly an inch
of rain, such as near ricketts glen pa as well as pockets of
the catskills and northern oneida county in ny.

Models have continued to trend not quite as deep with the low,
but it still gets into the 980s millibar range while tracking
from western to northern new york tonight. Cold front will sweep
across our area between midnight and dawn, probably with a
squally line of showers and gusty winds. Temperatures will still
be above freezing through the night, but the colder air will be
just entering the region first thing Sunday morning.

Short term Sunday through Monday
420 am update...

attention quickly turns to gusty winds areawide Sunday,
followed by accumulating lake effect snow in parts of central
new york late Sunday through Monday.

With models backing off somewhat on the intensity of the surface
low, magnitude of forecast wind gusts has also been tempered
down just a bit. It will still no doubt be a breezy day, with
deep mixing from steep low level lapse rates, strong cold air
advection, and a good pressure gradient. Peak gusts however may
end up being mostly in 35 to 45 mph range. A few power outages
cannot be ruled out, but overall the threat is not quite as
high as had been figured before.

Temperatures will quickly fall into 30s-lower 40s range as cold
air mass overtakes the region Sunday. The solid batch of rain
Saturday night, will transition to scattered rain showers
changing to snow showers on Sunday with shallow moisture. Snow
accumulations during the day Sunday will be nominal, with
moisture residing almost entirely below the dendritic growth
layer. However, secondary shot of cold air will arrive late
afternoon-evening, with deeper moisture extending into the
dendritic growth zone as 850mb temperatures also fall into the
minus 10-12 dec c range. From early Sunday evening through
midday Monday, lake effect snow still appears likely. 300 degree
boundary layer flow will guide main band across onondaga-
madison-oneida counties and perhaps into northern otsego at
times Sunday night, with blowing snow an issue as well. During
this period, snowfall rates may approach 1 to 2 inches per hour
for brief times. Snow and blowing snow will accumulate quickly
and cause potentially hazardous travel conditions late Sunday
night into Monday morning.

Winds will slowly back to the west Monday, and even southwest
into Monday afternoon. This will allow the lake band to shift
north of the thruway. As this occurs, slightly warmer air will
begin to move in from the west and will start to erode the lake
effect snow processes and lower the inversion heights. Snowfall
rates will also diminish into the afternoon, and eventually lift
completely to the north out of the area by the evening. Cloud
cover will mix out from south to north Monday night with quiet
weather and cool temperatures.

At this time, when adding up Sunday through Monday, average
snow amounts of 4 to 8 inches are figured for onondaga-madison-
oneida counties, but of course with lake effect snow there could
be locally higher amounts if a band can remain stationary for
several hours. Several ripples in the flow, and tenuous lake-
to-lake connections, suggest that there will be a lot of
fluctuations in the placement of the bands. We are also figuring
on about 1 to 3 inches or so sneaking into central cayuga,
northern cortland, northern chenango, and otsego counties.

Perhaps closer to 4 inches in far northern portions of these
counties. Additionally, 2 to 3 inches may extend into steuben
county courtesy of lake erie, especially the highest terrain of
western-southwestern steuben.

Long term Monday night through Friday
3 am... Progressive, energetic upper level flow continues to
dominate through the long range period. To start the period
Monday evening, some weak lake effect will continue to be
possible across the far north, mainly north of i-90 across
oneida county, before ending by the overnight as the flow shifts
to SW with a warm advection pattern developing. This will occur
as high pressure remains to the south with a low tracking
eastward over far northern ontario. This will lead to a
seasonably mild day Tuesday under mainly sunny skies with highs
in the upper 40s to low 50s. Beyond this time, forecast gets a
bit trickier as the next cold front and associated trough with
the aforementioned low pushes eastward across the area Tuesday
night into Wednesday. The GFS and gem continue to indicate a
mainly dry frontal passage while the latest ECMWF has a deeper
trough that manages to tap into some moisture and develop a low
off the east coast by Wednesday... Potentially bringing some
precip into the area. At this point, not making any big changes
to the forecast so will follow close to 0z superblend and only
mention low chances for rain snow showers Tuesday night into
Wednesday with temperatures being marginal... Generally in the
30s to low 40s.

At this point the end of next week looks to be mainly dry with
seasonably cool temperatures before another system potentially
affects the area next weekend.

Aviation 12z Saturday through Wednesday
Periods of rain move in late this morning but CIGS will take a little
while to lower to MVFR restrictions with this occurring in the
17 to 20z time frame. Also, wind shear will be an issue this
morning as a strong low level jet continues with 40 knot sw
winds just off the deck. These conditions should abate by early
afternoon.

There may be a brief lull in the rain this afternoon following
the first wave with heavier rain moving in this evening. Expect
cigs lowering to ifr at krme and kbgm around this time with most
sites also seeing occasional visby restrictions to ifr in
heavier rain. There may also be a second period of llws this
evening ahead of an approaching cold front. This front crosses
the region at the end of the TAF period... In the 9 to 12z time
frame.

Outlook...

Sunday Monday... Variable ceiling restrictions with scattered
lake effect snow showers north, generallyVFR south half. Winds
will also be quite strong and gusty Sunday.

Tuesday... GenerallyVFR.

Tuesday night Wednesday... Restrictions possible in scattered
rain snow showers.

Bgm watches warnings advisories
Pa... None.

Ny... None.

Synopsis... Mdp
near term... Mdp
short term... Mdp
long term... Pcf
aviation... Djp pcf


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RPRN6 - Rochester, NY 94 mi62 min SSE 7 G 9.9 41°F 1004.1 hPa (-3.0)

Wind History for Oswego, NY
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Syracuse, Syracuse Hancock International Airport, NY16 mi68 minNE 510.00 miOvercast31°F23°F72%1006.9 hPa
Griffiss Air Force Base / Rome, NY22 mi69 minE 710.00 miFair31°F19°F64%1009.9 hPa

Wind History from SYR (wind in knots)
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
Last 24hrW14W13
G19
W11
G18
W9NW10NW10W9W6CalmCalmCalmE4E4E5E6E5E9E7E8E7E7E9NE5NE4
1 day agoSW13W15SW9SW12SW21
G27
W18
G23
SW12W18
G26
W12
G16
W11W7W14W13
G23
W12
G18
W15
G26
W14
G25
W15
G22
W13
G24
NW11NW13NW18
G23
NW11W13NW13
2 days agoE5E6SE11
G14
SE12SE10SE13SE10SE10E10E9SE6SE12
G20
4S11SE17
G23
S13
G21
S19
G27
S18
G24
S15
G27
S11S12SW15
G20
SW10SW11

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Binghamton, NY (9,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Montague, NY
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.