Tuesday, September26, 2017 L-36.com

Marine Weather and Tides
Montpelier, 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 6:44AMSunset 6:42PM Tuesday September 26, 2017 1:58 PM EDT (17:58 UTC) Moonrise 12:55PMMoonset 10:39PM Illumination 35% Phase: Waxing Crescent; Moon at 6 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
7 Day Forecast for Marine Location Near Montpelier, VT
   Hourly   EDIT   Help
location: 44.27, -72.6     debug

Area Discussion for - Burlington, VT
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbtv 261730
area forecast discussion
national weather service burlington vt
130 pm edt Wed sep 26 2017

Strong high pressure at the surface and aloft will continue to
provide unseasonably warm, record setting temperatures for the
region today through Wednesday. A cold front will move across
northern new york and upstate vermont Wednesday night with some
isolated to scattered showers and isolated thunderstorms. A much
cooler air mass will return, and seasonable weather is expected
behind this front from Thursday through the upcoming weekend.

Near term through tonight
As of 130 pm edt Wednesday... Another hot, record breaking day is
expected with h850 temps still running a few standard deviations
above normal according to the latest 00z GEFS with actual h850 temps
in the +18c to +19c range. High temps should be fairly similar to
yesterday and maybe a degree or two cooler with a few- sct cumulus
and the scattered cirrus around. Overall, mostly sunny conditions
should be prevail with the cumulus mainly along the western spine of
the central and northern greens and over the adirondacks. Highs will
be in the upper 80s to lower 90s in the valleys especially the st
lawrence and champlain valleys and 70s to mid 80s over the elevated
terrain. Sfc dewpts will still be in the 60s and it will be very
humid outside. We will re-run the sps with the heat indices in the
lower 90s. They fall just short of the 2nd day with heat indices in
the mid 90s for a possible advisory for n-cntrl vt. Please see the
climo section below with the records that may be broken.

Expecting a similar night to this morning with the sfc high
weakening, and the mid level ridging flattening aloft. Some locally
patchy dense fog may form in the valleys. We are expecting some
high clouds to move in from the west ahead of the cold front over
the eastern great lakes region and southeast canada towards
daybreak. Lows will be in the mid 50s to mid 60s. It will be the
last mild night.

Short term Tuesday night through Wednesday
As of 130 pm edt Wednesday... Maria drifts close to the mid-atlantic
coast then starts to make the turn to the east to northeast. Mid
and upper level heights continue to fall over upstate ny into
western new england during the day with low pressure moving into
north-central quebec and a cold front approaching the region. The
increasing clouds should hold temps down a bit west of the champlain
valley with upper 70s to mid 80s in the valley areas, and upper 60s
to upper 70s over the higher terrain. Some upper 80s are possible
in the champlain valley and near btv possibly some isolated 90f
reading , with generally 80-85f readings in the other valley
locations, and 70s to around 80f over the mtns. Some record temps
are possible again at several sites.

There is modest convergence with the front and some small amounts of
sfc based instability in the 250-750 j kg range based on the latest
gfs. We have placed slight to low chances of showers in the
afternoon with a slight chc of thunderstorms.

We will continue the previous btv 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 many sites by 2-5 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.

Wednesday night into Thursday... Fairly good agreement with the
latest deterministic guidance that the front will clear the forecast
area between 06z-12z thu. We did keep a few lingering showers over
nrn-cntrl vt. Total rainfall from this front will likely be less
than a tenth of an inch unless some convection occurs. Cold
advection occurs in the wake of the front with h850 temps falling to
+2c to +10c from the st lawrence river valley southeast across
central vt. Lows will fall into the 40s to lower 50s. Cool and
breezy conditions are expected on Thu with sunshine mixing with
clouds, as a sfc high noses in from the southeast ontario. Highs
will trend back to normal readings with mid 60s to around 70f in the
valley areas, and 50s to lower 60s over the higher terrain.

Thu night... A short-wave moving through the upper level trough over
s-central canada, the great lakes region and into the northeast will
approach the forecast area. Mostly clear conditions early will give
way to increasing clouds especially over northern ny. The short-
wave and its associated cold front looks to impact portions of the
local area on fri. It should remain dry Thu night with lows in the
30s to around 40f. There could be some patchy frost with lower to
mid 30s in the northern adirondacks.

Long term Wednesday night through Sunday
As of 130 pm edt Wednesday... Persistence was used predominately in the
long term with the one change being the short-wave diving south and
east of the region during the day. The limited low-level moisture
will hold the chances of showers mainly in the slight chance
category on Friday mainly west of the champlain valley. From the
champlain valley eastward we have kept it dry.

A slight chc of showers was kept in Fri night into Saturday with the
mid and upper level trough passage, but overall this could end of
dry again which has been the trend the past few weeks. A large
ridge of high pressure builds in late Saturday into Monday with fair
and dry weather with seasonable temps. Some patchy frost may be
possible in the sheltered valleys within the higher terrain on the

Aviation 18z Wednesday through Sunday
Through 18z Wednesday...VFR through the period except late night early
morning ifr lifr in br fog at kmpv kslk from 06-13z wed. Winds light
and variable through 12z Wednesday, then south southwesterly 5 to 10
knots thereafter.


Wednesday night:VFR. Chance shra.

Thursday:VFR. Slight chance shra.

Thursday night:VFR. No sig wx.

Friday-Friday night:VFR. Chance shra.

Saturday-Sunday:VFR no sig wx.

Record high temperatures and year recorded for the period Tuesday
sep 26 to Wednesday sep 27
day burlington massena montpelier
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)
day burlington massena montpelier st johnsbury
9 23 86
9 24 91 88 85 89* (tied)
9 25 92 91 88 91

Btv watches warnings advisories
Vt... None.

Ny... None.

Synopsis... NWS aly
near term... NWS aly
short term... NWS aly
long term... NWS aly
aviation... Jmg
climate... Btv

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
45178 48 mi59 min SSE 9.7 70°F 71°F1015.8 hPa (+0.0)

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barre / Montpelier, Knapp State Airport, VT4 mi68 minN 010.00 miFair82°F68°F63%1017.8 hPa
Morrisville-Stowe State Airport, VT18 mi65 minN 310.00 miFair82°F64°F56%1016.8 hPa

Wind History from MPV (wind in knots)
Last 24hrCalmN4CalmS3CalmCalmCalmCalmS3CalmCalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalm3CalmCalm
1 day ago4W6NW6W4SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3E4S3
2 days agoCalmNW54W3S3CalmS3CalmS4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW5NW7NW7

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
IR Satellite Image from GEOS

GOES Local Image of Northeast    EDIT

Wind Forecast for Burlington, VT (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Burlington, VT
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.