Sunday, April23, 2017

Marine Weather and Tides
Parc, 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 5:52AMSunset 7:51PM Sunday April 23, 2017 1:36 AM EDT (05:36 UTC) Moonrise 4:37AMMoonset 4:27PM Illumination 9% Phase: Waning Crescent; Moon at 27 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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SLZ024 Saint Lawrence River From Cape Vincent To Saint Regis 1031 Pm Edt Sat Apr 22 2017
Overnight..Light and variable winds. Becoming mainly clear.
Sunday..Southwest winds 10 knots or less increasing to 15 to 20 knots. Sunny.
Sunday night..Southwest winds 5 to 15 knots becoming north 10 knots or less. Partly cloudy in the evening...then becoming mostly cloudy.
Monday..North winds 5 to 10 knots becoming northeast. Partly Sunny in the morning...then becoming mostly Sunny.
Monday night..Northeast winds 5 to 10 knots becoming east. Mainly clear in the evening...then becoming partly cloudy.
Tuesday..East winds 10 knots or less becoming southeast. A chance of rain showers.
Wednesday..East winds 5 to 10 knots becoming southeast. Partly cloudy.
Thursday..South winds 10 to 15 knots becoming southwest 5 to 10 knots. A chance of showers and Thunderstorms. Winds and waves higher in and near Thunderstorms.

7 Day Forecast for Marine Location Near Parc, NY
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location: 44.68, -73.41     debug

Area Discussion for - Burlington, VT
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Fxus61 kbtv 230326
area forecast discussion
national weather service burlington vt
1126 pm edt Sat apr 22 2017

A mid-level trough over the north country will exit eastward
tonight. A ridge of high pressure will build into the region on
Sunday and will remain over the region through Monday. Then a
coastal low pressure system will bring rain to portions of the
region Tuesday into Wednesday. Seasonable temperatures will see
a warm up for the latter half of next week.

Near term /until noon Sunday/
As of 1124 pm edt Saturday... Forecast remains on track with very
slow clearing trend underway. Will see some competing
influences during the pre-dawn hrs as strengthening inversion
in the 850-800mb layer helps to trap moisture/stratus layer,
while drier air gradually works in from the nnw with 20-25kt
winds at 900mb. Anticipate a very gradual clearing thru the
remainder of the overnight, starting with the st. Lawrence
valley and eventually into the champlain valley toward daybreak.

Orographic upslope will maintain stratus especially across the
nrn adirondacks and areas east of the green mtns overnight.

Can't rule out some patchy fog after midnight across NRN ny in
areas that do clear out, and as pbl stabilizes. Composite
reflectivity still shows a few isold -rw in cyclonic flow field,
especially across WRN vt. Will maintain 15-30% pops through
about 06z before trending completely dry. QPF amts t" to a few
hundreths, mainly across the mtns.

Skies will trend mostly sunny with light winds for Sunday,
setting up a pleasant day.

Temperatures tonight will be directly impacted by how
quickly/slowly clouds move out. Expect temperatures to be a few
degrees cooler over most of ny than vt as clearing reaches nrn
ny first. Generally expect mins in the upper 20s to mid 30s.

With more sunshine, MAX temperatures on Sunday expected to reach
the mid 50s to mid 60s.

Short term /noon Sunday through Monday/
As of 343 pm edt Saturday... Surface ridge axis will slide off
the atlantic coast as cold front associated with surface low
near hudson's bay skims the international border. Expect north
country to stay mainly dry, but see an increase in clouds
through Monday. Min temps Sunday night in the 30s. Due to the
increase in clouds, MAX temps Monday will be cooler in the upper
40s to mid 50s... Coolest temperatures will be further north
under thicker clouds.

Long term /Monday night through Saturday/
As of 307 pm edt Saturday... An unsettled weather pattern anticipated
for days 4 thru 7 with chances for mainly light rain showers.

First round of light rainfall occurs Tuesday afternoon into
Tuesday night... With main focus along and east of the cpv. This
precip is associated with developing east/southeast flow and
plume of deeper moisture with pws values approaching 1.0".

However... Nose of 850mb jet remains to our east... Along with
deepest moisture progs... So anticipating mainly light rain with
initial 5h vort and good upper level divergence from departing
rrq of 250mb jet over eastern canada on Tuesday evening. Qpf
will range from <0.10 western CWA to 0.10 to 0.30 across the
favorable SE upslope regions of the green mountains. A brief
break is anticipated late Tuesday night... Before more moisture
associated with closed 5h/7h and weak surface low pres along the
coast impacts our region by weds. Latest gfs/ecmwf shows a
sharp west to east gradient in the 850 to 500mb moisture
fields... So anticipating heavier precip east and just clouds
over the slv on weds. The combination of easterly upslope flow
at 25 to 35 knots between 925mb and 850mb and additional 5h
vorticity advection will produce another 0.10 to 0.25 across our
central/eastern sections on weds. Clouds and precip will have
impact on temps with warmest values near 70f slv and much cooler
with easterly flow and moisture across our eastern CWA with
highs upper 40s to lower 50s likely on weds.

System is progged to lift NE of our CWA by Thursday with weak short
wave ridge building across the mid atlantic/ne conus. This results
in strong low level WAA on breezy south/southwest winds. Progged
850mb temps btwn 12-14c with 925mb temps 18 to 20c... Support highs
well into the 70s with a few readings near 80f. Have trended toward
the ECMWF for a slower arrival of next system with the potential for
showers entering our western CWA by 18z Thursday and tracking east
toward evening. Thinking a slower departure of mid/upper level
cyclonic on weds... Will result in a slower arrival of next system
for Thursday... Therefore have trimmed back superblend pops to chance
at this time. Depending upon FROPA timing... Surface heating could
produce some modest CAPE values between 200 and 600 j/kg to support
a rumble or two of thunder. Just a thought as we move forward.

Otherwise... A front is draped across our the region on Friday into
Saturday with cooler and unsettled weather prevailing.

Aviation /04z Sunday through Thursday/
Through 00z Sunday... Expect a mix of MVFR improving toVFR at
all sites through the period as high pressure builds in. Some
low stratus will continue to hold on at slk/mpv throughout the
overnight hours as a low level inversion sets up. Dry air
associated with high pressure will see clearing skies for all
sites by Sunday morning. Winds will be west to northwest 5-10 kts
through the rest of the evening before becoming light and
variable during the late night hours. Sunday during the morning
to late afternoon hours expect the pressure gradient flow to
pick up over the saint lawrence as winds become southwesterly
10-15 kts with gusts to 20kts possible.


Sunday night:VFR. No sig wx.

Monday:VFR. No sig wx.

Monday night:VFR. No sig wx.

Tuesday:VFR. Chance ra.

Tuesday night:VFR. Chance ra.

Wednesday:VFR. Chance ra.

Wednesday night:VFR. No sig wx.

Thursday:VFR. Chance shra... Tsra.

Btv watches/warnings/advisories
Vt... None.

Ny... None.

Synopsis... Kgm
near term... Banacos/kgm
short term... Kgm
long term... Taber
aviation... Deal

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plattsburgh International Airport , NY4 mi44 minNW 510.00 miOvercast45°F36°F71%1017.5 hPa
Burlington, Burlington International Airport, VT20 mi43 minN 010.00 miOvercast44°F39°F83%1017.4 hPa
Franklin County State Airport, VT24 mi42 minWNW 310.00 miOvercast43°F38°F82%1017.3 hPa

Wind History from PBG (wind in knots)
Last 24hrSE3CalmSE4S3W3CalmSW4NW4W36NW7W4N6NE5W7NW7NW7CalmNW3NW3CalmW4NW4NW5
1 day agoCalmS3SE6SE9SE11SE9S12
2 days agoS4NE4CalmCalmN9N9N11N11NE10NE7NE8NE8E6NE7NE5N8NE8NE6N6NW3W3NW4NW4Calm

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
IR Satellite Image from GEOS

GOES Local Image of Northeast    EDIT

Wind Forecast for Burlington, VT (1,6,7,8)
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Ground Weather Radar Station Burlington, VT
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weather_mapweather_map weather_map

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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 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 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.