Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Oswego, NY

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 7:00AMSunset 7:24PM Thursday March 23, 2017 4:21 AM EDT (08:21 UTC) Moonrise 3:29AMMoonset 1:38PM Illumination 19% Phase: Waning Crescent; Moon at 25 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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LOZ044 Hamlin Beach To Mexico Bay Along Lake Ontario Including Irondequoit Bay- 1019 Pm Edt Wed Mar 22 2017
.small craft advisory in effect until 2 am edt Thursday...
Overnight..Northwest winds 15 to 20 knots becoming north 10 to 15 knots. Mainly clear. Waves 3 to 5 feet subsiding to 2 to 4 feet.
Thursday..Northwest winds 10 knots or less becoming south. Sunny. Waves 1 to 3 feet subsiding to 1 foot or less.
Thursday night..Southeast winds 5 to 15 knots becoming south. A chance of rain overnight. Waves 2 feet or less.
Friday..South winds 10 to 15 knots becoming southwest. Rain with a chance of freezing rain in the morning...then rain likely in the afternoon. Waves 2 feet or less.
Friday night..Southwest winds 5 to 15 knots becoming north less than 10 knots. Rain. Waves 2 feet or less.
Saturday..Northeast winds 10 to 15 knots increasing to 15 to 20 knots. Rain likely during the day...then rain likely with a chance of freezing rain Saturday night. Waves 1 to 3 feet building to 2 to 4 feet.
Sunday..East winds 15 to 20 knots becoming southeast 10 to 15 knots. Rain with a chance of freezing rain during the day... Then rain likely Sunday night. Waves 2 to 4 feet subsiding to 1 to 3 feet.
Monday..Southeast winds 5 to 15 knots. Rain likely during the day...then a chance of rain Monday night. Waves 1 to 3 feet subsiding to 1 foot or less. The water temperature off rochester is 37 degrees.
LOZ044 Expires:201703230915;;929601 FZUS51 KBUF 230219 NSHBUF NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE BUFFALO NY 1019 PM EDT WED MAR 22 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE LOZ043-044-230915-

7 Day Forecast for Marine Location Near Oswego, NY
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location: 43.47, -76.51     debug


Area Discussion for - Buffalo, NY
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Fxus61 kbuf 230532
afdbuf
area forecast discussion
national weather service buffalo ny
132 am edt Thu mar 23 2017

Synopsis
High pressure across the lower great lakes will result in fair
weather today with temperatures rebounding a bit. A frontal
boundary will stall across the region this weekend, with several
disturbances moving along the front and bringing periods of
rain over the weekend and into the first half of next week.

Near term /through today/
Sprawling arctic high pressure will continue to build in across the
great lakes overnight. A few scattered narrow bands of lake
effect clouds will persist southeast of lake ontario supported
by the cold airmass, but the very shallow inversion and dry
synoptic scale environment will only permit partly cloudy skies
at most. Otherwise for the rest of the area expect clear skies
overnight.

High pressure will move over the forecast area overnight setting the
stage for optimal radiational cooling with light to calm winds and
clear skies. Locations with lingering snowpack, such as the north
country and interior portions of the western southern tier will see
temperatures plummet overnight, with lows bottoming out in the
single digits to near zero. Meanwhile, lake plains locations, those
with limited snow pack, and urban areas will see temperatures mainly
in the low to mid teens.

The large high pressure system will slide to our east after
daybreak, with some limited return flow developing by mid- day
and the afternoon. This will allow for some moderation in
temperatures as the core of the cold airmass exits the region.

High temperatures will run a fair bit warmer than Wednesday, as
temperatures reach the low 30s in the north country to within a
few degrees of 40 in western ny. Full sunshine in the morning
will give way to a gradual increase in mid/high clouds later in
the afternoon as mid level warm advection increases from west to
east.

Short term /tonight through Saturday night/
After a midweek dry spell, the region will enter a prolonged
unsettled and relatively mild period that will last at least through
the weekend as a slow moving upper level low meanders across the
nation's mid-section. Southerly return flow around high pressure
stationed off the eastern seaboard, enhanced by a strengthening low-
level jet will pump moisture and mild air northwards across the
great lakes. Meanwhile, a northerly flow of cooler and drier
canadian air be found just to our north, sharpening a frontal
boundary across the lower great lakes. This front will then serve as
the focus for a band of precipitation across the forecast area that
will develop starting late Thursday night as the warm front lifts
across the region. With warm air initially overrunning the initially
sub-freezing surface air, we may see a brief period of mixed
precipitation, particularly across the southern tier and north
country, late Thursday night into Friday morning before the arrival
of much warmer air on southwesterly flow changes precipitation over
to rain. Temperatures Thursday will then warm into the 50s across
western ny, with low 40s in the north country.

Currently, the model consensus places the frontal precipitation band
along and north of the thruway, with around a half to three quarters
of an inch of precipitation possible, heaviest across the north
country. Temperatures across the forecast area should hold above
freezing Friday night, allowing for ongoing frontal precipitation to
persist as rain, with the possible exception of the st. Lawrence
valley, where a possible backing northerly flow may bring in some
sub-freezing air and result in mixed precipitation early Saturday
morning.

As we move into Saturday, diurnal effect should keep precipitation
mostly rain, however, as the broad surface low wandering across the
mississippi valley draws closer to the region, increasing
northeasterly flow into this low may draw colder surface air over
canada back across the forecast area, potentially undercutting the
warm air aloft. This may result in more substantial sleet and/or
freezing rain across the north country, and possible as far south as
the lake ontario plain. Model guidance differs somewhat in how far
north the warm front travels into canada Friday, and hence how far
south it will retreat Saturday, so all mixed precip grids are being
left as a chance for the time being.

Long term /Sunday through Wednesday/
An active wet pattern will continue Sunday into at least the middle
of next week as western and north-central ny will remain within the
track of at least two mid-level troughs. Each of these troughs will
provide synoptic lift over and moist southerly flow into our region
that will interact with a low frontal boundary. The first will shift
over our region in the Sunday-Monday time frame while the second
looks to shift over our region Tuesday. It appears now that this
boundary from Sunday into Monday will lie further to the north
towards or across the saint lawrence river valley then should be
shoved even further northeast by the second trough/surface low. For
western ny into the finger lakes, the position of this front will
allow for plenty of low level warm air to support high confidence
for a soaking plain rain. Looking across the north country into the
saint lawrence valley, the position of the front will be more
sensitive to p-type and a risk for some freezing rain Sunday night
and Monday night with cold northeasterly flow down the slv. Have
kept any wording for freezing rain at chance pops due to the
uncertainty in frontal position this far out.

In terms of surface temperatures, areas to the south of the front
will mainly feature warmer temps upper 40s into the 50s while areas
north of the boundary will see cooler temperatures 30s and lower 40s
with some 20s possible in the north country during the overnights.

In terms of qpf, a rough average accumulated total among the models
Sunday through Tuesday ranges from around a half inch on the ecmwf
to around 2 inches on the gfs. While the long duration of this event
should not bring any flash flooding concerns, river and stream rises
and areal flooding of low-lying areas may be possible. If sub-
freezing air remains locked at the surface on the north side of the
front there could also be a threat of some significant ice
accumulations but the lowest confidence is found in that scenario.

Overall, confidence on the specific placement of any weather hazards
during this period is fairly low at this range which has precluded a
mention in the hazardous weather outlook.

On Wednesday, the second surface low will shift off into new england
with a cooler and perhaps very dry northwest flow in its wake. The
12z ECMWF shows very dry air with just a cool northwest flow on
Wednesday while the GFS shows some lingering wrap around moisture
may lead to some upslope/lake enhanced showers. Have gone with
slight/low chance pops for Wednesday under a more clear signal shows
up in the guidance.

Aviation /06z Thursday through Monday/
High pressure will remain across the region overnight with skc
in most areas. A few scattered lake effect clouds will persist
in a small area southeast of lake ontario with bases around 4k
feet. The surface high will drift to the mid atlantic later
today.VFR will continue with a modest increase in mid/high
clouds from west to east later in the afternoon.

Clouds will thicken and lower tonight, but it should generally
remain dry and in theVFR category until just before 12z Friday.

There is also a potential for llws after 06z Friday.

Outlook...

Friday... Deterioration to MVFR/ifr with rain. The rain may begin as
a brief period of freezing rain or snow in some areas.

Saturday thru Monday... MVFR/ifr with rain likely at times.

Marine
Winds have diminished with high pressure building across the
lower great lakes so the small craft headlines will be allowed
to expire. This high will will remain across the waters through
this evening with light winds and negligible waves.

S or SW winds will increase Friday, and may approach small craft
criteria. After this, a boundary will stall across the region,
with a northeasterly flow likely on lake ontario and variable
winds on lake erie. This may require small craft headlines on
lake ontario for portions of the weekend.

Buf watches/warnings/advisories
Ny... None.

Marine... None.

Synopsis... Apffel
near term... Apffel/church/hitchcock
short term... Wood
long term... Smith
aviation... Apffel
marine... Apffel


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OSGN6 - 9052030 - Oswego, NY 0 mi51 min N 7 G 13 24°F 1033.6 hPa7°F
RPRN6 - Rochester, NY 59 mi81 min NW 8.9 G 11 26°F 1034.9 hPa (+0.7)
RCRN6 - 9052058 - Rochester, NY 61 mi51 min 19°F 1034.5 hPa

Wind History for Oswego, NY
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N26
G34
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G29
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G21
N13
G22
N16
G20
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G25
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S3
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G11
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G13
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G15
W11
G16
W12
G15
W8
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G11
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G12
W8
G11
SW7
G10
W24
W24
W22
G27
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G32
NW25
NW22
G28
N21
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NW25
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W8
G12
W10
S6
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G10
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G11
W8
W3
W3
N2
N2
NE1
SE1
S3
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S4
S5
S6
S5
S5

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fulton, Oswego County Airport, NY10 mi27 minN 010.00 miFair0°F0°F%1033.5 hPa

Wind History from FZY (wind in knots)
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Last 24hrN20
G30
N11
G25
N16
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--N18
G23
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G27
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NW11W9NW6W6NW6NW6NW6N8N6Calm
1 day agoCalm--S3CalmS3W4----W11
G17
W14W10W13
G21
W8W9W5SW8W17
G25
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G24
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G21
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G26
NW16
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G26
N18
G31
NW21
G28
2 days agoW3CalmCalmCalmSE33SE3--------CalmCalmSW4SW4CalmCalmCalmCalmCalmCalmCalmCalmCalm

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Buffalo, NY (4,6,7,8)
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Ground Weather Radar Station Montague, NY
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weather_mapweather_map weather_map

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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.