Monday, September25, 2017 L-36.com


Marine Weather and Tides
South Burlington, VT

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 6:43AMSunset 6:44PM Monday September 25, 2017 1:10 PM EDT (17:10 UTC) Moonrise 12:02PMMoonset 10:02PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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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7 Day Forecast for Marine Location Near South Burlington, VT
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location: 44.43, -73.25     debug


Area Discussion for - Burlington, VT
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Fxus61 kbtv 251140
afdbtv
area forecast discussion
national weather service burlington vt
740 am edt Mon sep 25 2017

Synopsis
After some early morning fog expect plenty of sunshine and highs
in the mid 80s to lower 90s. A shower or two may pop up along
the spine of the green mountains this afternoon. The above
normal temperatures will continue right through the middle of
the week as high pressure remains over the area. Expect dry
weather on Tuesday but as a trough of low pressure moves into
the region late Wednesday through Thursday morning the chances
for showers will increase... Especially near the canadian border.

Near term through Tuesday
As of 740 am edt Monday... Going forecast in good shape and no
changes needed at this time. Little change in temperatures at
925 850 millibars from yesterday to today and thus see no reason
why we see high temperatures very similar to yesterday... Mid
80s to lower 90s... Which will break more records. Dew points
well into the 60s will push heat index values into the lower
90s. Should see plenty of sunshine once again as ridging aloft
exists. Hard to ignore the btv4 showing on consecutive runs the
potential for some isolated convection over the green mountains
this afternoon. Plenty of instability and the mountains of
course are a natural source of lift. Cap overall should
hold... But cannot rule out a couple can break through the cap.

Flow aloft is weak so any showers would not be able to move off
the terrain... Thus having little impact overall. Have included a
slight chance of showers for parts of the green mountains.

Any showers quickly come to an end tonight and high dew points
will keep overnight lows above normal and should see fog
developing with clear skies and light winds. On Tuesday once
again little change in 925 850 millibar temperatures and will
continue to go with more record breaking temperatures with highs
in the mid 80s to lower 90s. Will be interesting if here at btv
we can actually hit three straight days of 90 degrees... Something
that never occurred this summer.

Short term Tuesday night through Wednesday
As of 323 pm edt Sunday... Its much of the same story for Tuesday
evening as the ridge will still be in place. High heat during
the day Tuesday and high dewpoints during the afternoon will
lead to fog overnight. General feeling is that there will be
some dense fog in the sheltered valley locations with some
patches of fog elsewhere. Overnight lows will be in the 60s
again, which is more indicative of our normals highs this time
of year.

The airmass will be slightly changing into Wednesday as the
ridge finally breaks down however not much changes in the thermal
profile until late. 925mb temps still support temps in the upper
80s with 90's in the valleys. I wasn't as bullish on that as
we should start to build in some cloud cover that would
insulate the north country from peak heating. Even so the
forecast of mid to upper 80s would still set or tie records at
btv mpv mss 1v4. With records possible i'll hold on to the
previous discussion highlighting heat hazards below:
while these temps are considered sub advisory(<95 f), they are
not to be taken lightly especially given the time of year. Based
on the forecast and current records, its expected that records
will fall at all sites by 3-5 degrees. Prolonged exposure
outside combined with strenuous activity can lead to heat
related injuries. Please take caution, stay hydrated and take
frequent breaks during any outdoor activities. This will be the
fourth consecutive day with 90+ degree heat indexes during the
afternoon.

Long term Wednesday night through Sunday
As of 323 pm edt Sunday... Wednesday night is when we should
finally start to see some reprieve from the heat. A mid level
short wave will finally move into the north country but the
moisture isn't very strong. I've trended the forecast back
another 3-6 hours as guidance seemed overdone on the precip
threat during the late afternoon Wednesday.

A weak cold front will swing through during the overnight hours
Wednesday and bring scattered showers. Given the overnight
timing I dont feel there will be any thunder threat so i've
opted to continue with no mention of thunder. Behind the front
we get into cold air advection and see temps return to near
normal with highs in the 60s and lows in the 40s.

Late in the week heading into the weekend guidance is starting
to bring a shortwave trough into the region so i've mentioned
slight chance for pops but I dont have high confidence in
timing of the isolated to scattered showers.

Aviation 12z Monday through Friday
Through 12z Tuesday... Some fog will linger at most sites through
14z with a wide range of visibility categories... MVFR to vlifr.

After 14z looking atVFR through about 06z before fog returns at
most sites for the remainder of the period. Little in the way of
cloud cover through the period but brief periods of lifr to
vlifr ceilings associated with the fog... Especially at kslk and
kmpv. Winds will be less than 10 knots through the period.

Outlook...

Monday night:VFR. Patchy fg.

Tuesday:VFR. No sig wx.

Tuesday night:VFR. No sig wx.

Wednesday:VFR. Chance shra.

Wednesday night:VFR. Chance shra.

Thursday:VFR. Slight chance shra.

Thursday night:VFR. No sig wx.

Friday:VFR. Slight chance shra.

Climate
Record high temperatures and year recorded for the period Sunday sep 24
to Wednesday sep 27
day burlington massena montpelier
9 25 85 1891 90 2007 85 2007
9 26 84 1934 82 1970 83 2007
9 27 83 1920 82 2003 80 2007
for burlington, here are the latest in the year dates for reaching
specific temperature thresholds
90f or higher: 9 16 1939
88f or higher: 9 22 1965
87f or higher: 9 23 1895
86f or higher: 9 23 1895 (was 87f that day)
records:
day burlington massena montpelier st johnsbury
9 23 86
9 24 91 88 85 89* (tied)

Btv watches warnings advisories
Vt... None.

Ny... None.

Synopsis... Evenson
near term... Evenson
short term... Deal
long term... Deal
aviation... Evenson
climate... Btv


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45178 14 mi71 min S 1.9 71°F 69°F1019.2 hPa (+0.0)
45166 25 mi41 min SW 1.9 G 3.9 78°F 73°F69°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington, Burlington International Airport, VT6 mi17 minN 010.00 miA Few Clouds88°F70°F55%1018.3 hPa
Plattsburgh International Airport , NY19 mi18 minSE 610.00 miFair83°F68°F61%1018.1 hPa

Wind History from BTV (wind in knots)
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Last 24hrCalmSW4CalmNW5W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3CalmNW3Calm
1 day ago3E3NE4E4W3S3CalmCalmCalmCalmCalmSE3CalmCalmE3CalmCalmCalmCalmCalmSW7S55Calm
2 days agoNW8NW8NW8NW9NW7NW4CalmSE3CalmE3CalmE4E3E4E3CalmN5SE5CalmE333CalmS3

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Northeast    EDIT
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Wind Forecast for Burlington, VT (13,3,4,5)
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Ground Weather Radar Station Burlington, VT
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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.