Friday, July21, 2017 L-36.com


Marine Weather and Tides
Plattsburgh, 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 5:27AMSunset 8:32PM Friday July 21, 2017 12:42 AM EDT (04:42 UTC) Moonrise 3:36AMMoonset 6:54PM Illumination 7% 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 1044 Pm Edt Thu Jul 20 2017
Overnight..Southwest winds 5 to 10 knots. Mainly clear... Then becoming partly cloudy.
Friday..Southwest winds 10 knots or less becoming west. Mostly Sunny.
Friday night..West winds 10 knots or less becoming northwest. Mainly clear in the evening...then becoming partly cloudy.
Saturday..Northeast winds less than 10 knots. Partly Sunny in the morning...then becoming mostly cloudy.
Saturday night..Southwest winds less than 10 knots. Mostly cloudy.
Sunday..Northeast winds 5 to 10 knots. A chance of showers and Thunderstorms during the day...then showers likely with a chance of Thunderstorms Sunday night.
Monday..Northeast winds 5 to 10 knots. A chance of showers and Thunderstorms.
Tuesday..North winds 10 knots or less becoming southeast. A chance of showers during the day. Winds and waves higher in and near Thunderstorms.

7 Day Forecast for Marine Location Near Plattsburgh, NY
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location: 44.69, -73.44     debug


Area Discussion for - Burlington, VT
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Fxus61 kbtv 210247
afdbtv
area forecast discussion
national weather service burlington vt
1047 pm edt Thu jul 20 2017

Synopsis
Friday will remain relatively dry, but an isolated afternoon
shower or two is not out of the question. Saturday into the
first part of Sunday will see more dry and seasonable weather
under high pressure. Sunday evening into Monday brings the next
chance of showers and thunderstorms as an upper level trough of
low pressure moves in.

Near term through Friday night
As of 1034 pm edt Thursday... Showers and thunderstorms have moved
out of the area. Rest of the evening should be quiet with skies
becoming mostly clear. May see some patchy fog in the typcially
fog prone spots, especially any spots which had a shower roll
through this afternoon. Previous discussion follows.

Quiet and dry weather is expected tonight and for most of
Friday. There will be a trough moving across eastern canada and
we should see some increase in dynamic support and combined with
additional forcing from the higher terrain and sufficient
instability. Because of that cannot rule out the possibility of
some very isolated showers or thunderstorms, mainly over the
northern adirondacks and the northern third of vermont. Again
this activity would be weak and disorganized. Overnight Friday,
high pressure takes hold again leading to another dry and quiet
night.

High temperatures today and Friday will generally be in the
upper 70s to mid 80s while lows for Thursday and Friday will be
in the mid 50s to mid 60s.

Short term Saturday through Sunday night
As of 314 pm edt Thursday... Looking for a relatively dry day on
Saturday with west-northwesterly mid-level flow and weak sfc
high pressure in place across ny and new england. Low-level wind
fields are quite weak with flat p-gradient, so winds areawide
should be less than 10 mph. The 850mb temps per 12z GFS ecmwf
are near +13c at btv at 18z Saturday, and with partly to mostly
sunny conditions, should see daytime highs in the low-mid 80s.

Can't completely rule out a terrain driven shower isold
tstm... Especially vcnty of the NRN adirondacks. There is a
slight chance mention (pops 15-20%) in the official forecast
during the mid aftn thru early evening period as a result.

Low pressure tracking ewd across the SRN great lakes region will
be associated with ewd extending frontal zone, with developing
zone of 850-700mb warm advection across the SRN half of the
forecast area during Saturday night. Some nwp differences with
12z GFS showing associated showers and WAA further north across
our region, with 12z ECMWF suppressed further south. At this
point, included 30-40% pops mainly late Saturday night for
showers and chance for an embedded elevated thunderstorm.

Will see continued chances for showers and isold thunderstorms
on Sunday into Sunday night, generally 20-40% pops Sunday and
50-60% pops Sunday night with highest pops across the SRN half
of our forecast area. During this time frame, e-w baroclinic
zone will be situated across central ny into central new
england, with weak sfc low tracking ewd along the frontal zone.

It appears that better upper level support arrives Sunday night
into Monday with shortwave trough approaching from sern ontario.

12z GFS model soundings at krut Sunday night indicate elevated
instability around 500 j kg, so maintained slight chance
thunderstorms thru the overnight period. Should see high temps
mid-upr 70s Sunday, and upr 50s to around 60f for Sunday night
with mostly cloudy skies expected.

Long term Monday through Thursday
As of 314 pm edt Thursday... Mid-level shortwave trough tracks
ewd thru the area Monday into Monday night, with continued
chances for showers. Abundant clouds likely Monday, keeping
daytime highs in the low-mid 70s. Should trend toward cooler and
drier weather mid-week as shortwave trough moves east of our
longitude later Monday night or Tuesday. Should see highs in the
mid 70s Tue wed. Kept lingering 30% pops Tuesday and down 10%
or less into Wed thu.

Aviation 03z Friday through Tuesday
Through 00z Saturday... Last vis imagery of the evening shows
mainly clear skies across our TAF sites... As much drier air
advects into the region on northwest winds. Surface dwpts have
dropped into the upper 50s to lower 60s... Which combined with
975mb to 900mb winds of 10 to 20 knots overnight will keep
atmosphere mixed and limit fog br development. Have utilized
tempo btwn 08-11 for MVFR in br at mpv and MVFR CIGS at slk
toward sunrise. Otherwise...VFR conditions prevail at all sites
with northwest winds 3 to 8 knots... Becoming light and variable
overnight.

Outlook...

Friday night:VFR. No sig wx.

Saturday:VFR. No sig wx.

Saturday night:VFR. Slight chance shra.

Sunday:VFR. Chance shra... Slight chance tsra.

Sunday night:VFR. Chance shra... Slight chance tsra.

Monday:VFR MVFR. Chance shra... Chance tsra.

Monday night:VFR MVFR. Chance shra.

Tuesday:VFR MVFR. Chance shra.

Btv watches warnings advisories
Vt... None.

Ny... None.

Synopsis... Verasamy
near term... Neiles verasamy
short term... Banacos
long term... Banacos
aviation... Taber


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45178 6 mi43 min WSW 5.8 65°F 72°F1009 hPa
45166 12 mi28 min SW 3.9 G 5.8 72°F 73°F62°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plattsburgh International Airport , NY3 mi50 minWSW 310.00 miFair64°F59°F84%1010.5 hPa
Burlington, Burlington International Airport, VT21 mi49 minN 010.00 miFair66°F62°F87%1010.8 hPa

Wind History from PBG (wind in knots)
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Last 24hrCalmCalmSW5CalmCalmCalmNW3CalmSE5SE76SE10E5E5Calm4W10
G17
NW5N44CalmCalmCalmSW3
1 day agoCalmCalmCalmS3S4CalmCalmS3S465SE6SE12SE5S8Calm3CalmS4CalmSW34S3Calm
2 days agoCalmSW3S3W3SW3--S4S4CalmSE9SE10SE9SE8SE7SE5SE5CalmCalmCalmCalmCalmCalmCalmCalm

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 Burlington, VT (0,6,7,8)
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Ground Weather Radar Station Burlington, VT
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weather_mapweather_map weather_map

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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.