Thursday, December12, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Willsboro, NY

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:18AMSunset 4:14PM Thursday December 12, 2019 7:54 PM EST (00:54 UTC) Moonrise 5:49PMMoonset 8:35AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 Willsboro, NY
   Hourly   EDIT   Help
location: 44.32, -73.32     debug


Area Discussion for - Burlington, VT
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KBTV 130030 AFDBTV

Area Forecast Discussion National Weather Service Burlington VT 730 PM EST Thu Dec 12 2019

SYNOPSIS. Surface high pressure exiting east of New England tonight will allow for increasing mid-level clouds and developing south winds during the overnight hours. Temperatures will fall into the teens to lower 20s early tonight, but generally remain quasi-steady after midnight. Temperatures will moderate above freezing on Friday, but increasing low clouds are expected by afternoon. These low clouds will bring areas of drizzle and some patchy freezing drizzle to a few sheltered valleys in northern New York and eastern Vermont late Friday into Friday night. Precipitation will become steadier, trending toward periods of plain rain later Friday night through Saturday as low pressure moves northward across New England. As low pressure exits to the north, developing brisk northwest winds will bring colder temperatures and periods of snow showers late Saturday night through Sunday. A few inches of snow accumulation is possible, especially across the higher terrain.

NEAR TERM /THROUGH FRIDAY/. As of 730 PM EST Thursday . Minor adjustments to winds and hourly tempreratures were made into the overnight hours to account for current observational trends. Essentially noise- level adjustments, though wind speeds were lightened by about 5 kts through the late evening hours. Have a nice night.

Prior discussion . High pressure along the south coast of New England swwd into the Mid-Atlantic states will depart eastward overnight. GOES-16 IR imagery already reveals mid-level WAA cloudiness in developing swly 850-500mb flow regime across the northern Great Lakes ewd across sern Ontario into nrn NY at 20Z. These mid- level clouds will spread eastward this evening. Along with developing southerly gradient flow, radiational cooling will be minimized. Will see temperatures fall into the mid teens to lower 20s early on, but then remain steady or slowly rise late. South winds reach 10-15 mph with gusts 20-25 mph possible in the Champlain Valley after midnight, allowing temps to climb back into the mid-upper 20s. A Lake Wind Advisory will also go into effect at midnight (see Marine section below).

For Friday, looking at a rapid increase in 925-850mb RH in association with recycled maritime stratus deck that approaches the North Country from the south/SSW on backside of departing high pressure. Any sunny breaks will be during the morning, with developing low overcast during the afternoon from south to north. It appears from 12Z NAM model soundings that the cloud layer reaching a depth of 3-4kft, but temperatures within the cloud layer remain warmer than -5C or so. Little potential for frozen cloud condensate, so may see the development of some light drizzle, especially s- central VT, during the afternoon into the early evening hours. Temperatures will climb to 35-40F in most locations Friday afternoon. However, a few spots east of the Greens and along the ern slopes of the Adirondacks may remain close to freezing. Thus, can't rule out a few patches of freezing drizzle in these areas late Friday afternoon into Friday evening. Will continue to monitor localized freezing drizzle potential late Friday into Friday evening.

SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/. As of 336 PM EST Thursday . Increasing QG forcing and low-level WAA will result in drizzle/patchy freezing drizzle trending toward plain rain during Friday night. Developing surface low across ern NC/ern VA at 06Z Saturday will track northward, with strong low-level sely flow resulting in strong moisture advection and PW values increasing to 0.9" to 1.0" across the North Country by Saturday morning. Will see periods of moderate rainfall 06Z Saturday through 15Z Saturday. Thereafter, it appears mid-level dry slot will progress through the region while low deepens to 980mb or so across the region by 00Z Sunday. Temperatures will generally climb into the mid-level 40s, but rainfall will become light and intermittent in nature Saturday afternoon. May see some sharp rises on area rivers. While flooding is not expected, a few locations - such as the Otter Creek at Center Rutland - may trend back above action stage given high antecedent levels.

Good potential for comma head/wraparound precipitation as low center pulls away across srn Quebec Saturday night, while deepening to ~978mb. Backside moderate W-NW winds develop, and strong CAA will result in rain gradually changing over to snow Saturday night. Snow should develop in the Adirondacks by 03-04Z, and across the higher elevations of VT just after midnight. Eventually, valley floors should see rain changing to snow before daybreak Sunday. Wet snow accumulations of 1-3" will be possible, highest over the elevated terrain. May see snow covered roads developing in higher elevation spots during the pre-dawn hours Sunday.

LONG TERM /SUNDAY THROUGH THURSDAY/. As of 336 PM EST Thursday . Low pressure will continue to intensify as it moves off to the northeast over the Gulf of St Lawrence on Sunday. This strengthening 970mb low will bring 10-15 knots westerly winds with gusts between 20-30 knots at times during the late morning/afternoon hours areawide Sunday. Froude numbers during this time will be near critical values between 1-2 promoting upslope snow showers along the Adirondack and Green Mountains. Additional snowfall accumulations between 2-4 inches are likely. Some lingering flurries may be possible for the Champlain Valley and areas across eastern Vermont but accumulations should be limited to less than 0.5" as temperatures are slow to cool below freezing. Temperatures Sunday will be slowly falling through the day with many locations in the low to mid 30s. Wind chills will be in the teens to mid 20s. Overnight lows fall into low to mid teens under continued CAA.

Upslope snow showers should end by Monday morning as drier air works into the area and froude numbers become unblocked. Winds will abate by Monday morning as surface high pressure and upper level ridging settle in overhead. Despite chillier temperatures in the low to mid 20s should still be a nice day similar to today with mainly clear skies and light winds.

As has been the pattern recently, it seems we have been looking at another system every 24-48 hours . another system is poised to move across the North Country during the day on Tuesday. Still questions regarding the track of the low. However, GFS has been slowly nudging towards ECMWF with a more western shift in the low track. Still, significant differences in the exact location of the low remain and therefore questions still surround exactly what impacts (snow vs mixed precip) we will see from this system. At this time, have offered 40-60% chance for precipitation Tuesday with greatest chances across our southern zones and lesser likelihoods as you head towards the International Border. Chances for light snow remain in the wake of this system as a weak clipper moves across the area, additional light snowfall is likely due to lake effect snow showers as well.

AVIATION /01Z FRIDAY THROUGH TUESDAY/. Through 00Z Saturday . VFR through most of the TAF forecast cycle with low level wind shear the main concern. Cigs mainly a mix of bkn/ovc mid to high level clouds generally above 100 AGL through 15Z. Winds generally light southerly 5 to 10 kts through this period, though slightly higher at KBTV and possibly KBTV with gusts into the 15-20 kt range developing overnight. Main concern will be south/southwest LLWS in the 35-45 kt range developing after 05Z at all terminals except KBTV and KPBG. After 15Z LLWS continues at selected terminals with cigs gradually trending bkn/ovc VFR in the 040-090 AGL range. Light to moderate mechanical turbulence likely on approaches/departures. Finally, MVFR stratus to likely encroach into KRUT/KMPV and possibly KSLK after 18Z as low level moisture is transported northward in advance of the next weather maker.

Outlook .

Friday Night: Mainly MVFR, with local IFR possible. Definite RA, Chance FZRA. Saturday: Mainly IFR, with areas MVFR possible. Definite RA. Saturday Night: Mainly IFR, with areas MVFR possible. Definite RA, Definite SN. Sunday: Mainly MVFR, with areas VFR possible. Chance SHSN, Chance SHRA. Sunday Night: Mainly VFR, with local MVFR possible. Slight chance SHSN. Monday: VFR. NO SIG WX. Monday Night: VFR. Chance SHSN. Tuesday: Mainly MVFR, with areas VFR possible. Chance SHSN.

MARINE. A Lake Wind Advisory is in effect beginning at midnight. Southerly gradient winds will develop late this evening, and increase abruptly to 20 to 30 knots after midnight. Likewise, waves will build during the pre-dawn hours Friday, likely reaching 2-4 feet before dawn and 3-5 feet during the day Friday (highest across the northern end of the broad lake). The southerly winds may lessen slightly by Friday afternoon, likely decreasing into the 15-25 knot range.

BTV WATCHES/WARNINGS/ADVISORIES. VT . None. NY . None.

SYNOPSIS . Banacos NEAR TERM . JMG/Banacos SHORT TERM . Banacos LONG TERM . LaRocca AVIATION . JMG MARINE . Banacos


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burlington, Burlington International Airport, VT14 mi60 minS 710.00 miA Few Clouds26°F10°F53%1036.5 hPa
Plattsburgh International Airport , NY24 mi61 minN 010.00 miMostly Cloudy21°F12°F71%1036.3 hPa

Link to 5 minute data for KBTV

Wind History from BTV (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrW12
G22
W14
G25
NW17
G28
W13
G25
W15
G23
W13
G18
W10
G18
W6W9
G17
W14
G20
W14
G22
W10W7NW11
G16
W9NW7NW6N4E33S3E4SE7S7
1 day agoN10NW13NW9N7N13NW16
G21
N13
G17
N10N7N8N6NE6NE5N3SE4S6SW10S10S12S11S14
G17
S9S11SW11
G23
2 days agoS19
G33
S16
G27
S18
G27
S21
G27
S18
G27
S16
G25
S16
G24
S14
G26
S16
G24
S17
G22
S15
G22
S16
G24
S11S14S9S8S8SW5W16
G24
W13
G21
W8
G15
W14
G22
W10W11

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Burlington, VT (19,4,5,8)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.