Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Niantic, CT

Version 3.4
NOTICE
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 6:02AMSunset 7:40PM Wednesday August 21, 2019 4:14 PM EDT (20:14 UTC) Moonrise 10:52PMMoonset 11:41AM Illumination 63% Phase: Waning Gibbous; Moon at 21 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
ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 202 Pm Edt Wed Aug 21 2019
.severe Thunderstorm watch 609 in effect until 9 pm edt this evening...
This afternoon..S winds 5 to 10 kt. Seas 1 ft or less. Scattered showers and tstms.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Chance of showers. Scattered tstms in the evening, then chance of tstms after midnight.
Thu..SW winds 5 to 10 kt. Seas 1 ft or less.
Thu night..W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 ft or less. Chance of tstms in the evening. Chance of showers.
Fri..N winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 1 ft or less.
Fri night..W winds 5 to 10 kt, becoming N after midnight. Seas 1 ft or less.
Sat..N winds 5 to 10 kt, becoming S in the afternoon. Seas 1 ft or less.
Sat night..SE winds 5 to 10 kt, becoming ne after midnight. Seas 1 ft or less.
Sun..NE winds 10 to 15 kt. Seas 1 ft or less, then 2 to 3 ft in the afternoon.
Sun night..NE winds 10 to 15 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.
ANZ300 202 Pm Edt Wed Aug 21 2019
Synopsis for the long island waters and new york harbor.. A cold front will slowly approach the waters through Thursday, passing Thursday night. High pressure builds in behind the front through the weekend.


7 Day Forecast for Marine Location Near Niantic, CT
   Hourly   EDIT   Help
location: 41.23, -72.24     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 212006
afdokx
area forecast discussion
national weather service new york ny
406 pm edt Wed aug 21 2019

Synopsis
A trough of low pressure will be in the area this evening. A
cold front will then slowly approach through Thursday. The
front moves across and southeast of the region Thursday night.

The cold front will move farther southeast of the region Friday
into the weekend as high pressure builds in from the north. Weak
low pressure areas and a frontal system approach early into the
middle next week.

Near term until 6 am Thursday morning
Showers and thunderstorms will be moving through the area as we
head into the early evening hours. Mid level shortwave lift will
shift through and interact with capes of 2000-3000 j kg with
the best lift exiting east by midnight. The biggest threat with
severe storms would be with wind gusts. There is also at least
a chance of flash flooding where the heaviest storms
concentrate.

The precipitation is expected to wind down from west to east
later this evening and there could be some patchy fog late with
a residual moist environment. Muggy overnight with low
temperatures above normal.

A high risk of rip current development remains into this evening
for the ocean beaches.

Short term 6 am Thursday morning through Thursday night
A cold front approaches on Thursday and passes through Thursday
evening. A pre-frontal trough probably sets up in the afternoon
across part of the tri-state area ahead of the cold front. This
along with shortwave lift and sufficient CAPE will bring shower and
thunderstorm chances mainly during the afternoon and evening hours.

Shear profiles support the potential of at least strong storms.

Regarding temperatures and heat indices, 850mb temps are forecast to
be around 17c afternoon. Surface winds will be mostly sw, and
perhaps even more westerly away from the coast. This would normally
allow surface dewpoints to lower a few degrees in the afternoon,
however with the presence of a pre-frontal trough and approaching
cold front, this could be offset somewhat.

There is a moderate rip current risk for Thursday.

Long term Friday through Wednesday
An upper level trough lifts north of the region on Friday. Upper
level ridging moves into the region this weekend and continue into
early next week. This is fairly consistent between GFS and canadian
models but ECMWF model breaks off a piece of the trough and keeps it
near region as weak upper level low for the weekend. For next week,
the ridge eventually moves east of the region with a weak trough
approaching from the west.

At the surface, a cold front will continue moving southeast of
long island Friday and into the weekend. GFS and canadian
models likewise show a more steady front movement southeast of long
island while ECMWF shows a little slower movement and closer
proximity of low pressure to the region along the front.

For weather, other than some left over early morning showers on
Friday, dry conditions are forecast for Friday and much of the
weekend. Depending on how low pressure trends along the front to the
south and a frontal system approaching from the west going into
early to middle of next week, there could be a return to rain in the
forecast. Currently, it seems this scenario is more of a low end
possibility, so limited rain to slight chance, with mainly dry
conditions anticipated.

Temperatures overall forecast to be slightly below normal.

Aviation 20z Wednesday through Monday
A trough of low pressure develops this afternoon ahead of an
approaching cold front with a chance of showers and
thunderstorms. Coverage of showers and thunderstorms will
increase late this afternoon, with MVFR or ifr possible in any
thunderstorm. Thunderstorm chances diminish later this evening
and overnight. Confidence in timing, placement and coverage
remains low.

Southerly winds increase to 10-15 kt with gusts to around 20 kt
possible at the nyc terminals during the afternoon. Winds
lighten from the SW this evening and overnight.

Ny metro enhanced aviation weather support...

detailed information, including hourly TAF wind component forecasts,
can be found at: http:

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
LDLC3 - New London Ledge CT - Ledge Light Weather 10 mi45 min SSW 11 G 12 76°F 70°F
NLNC3 - 8461490 - New London, CT 12 mi63 min SSW 12 G 16 82°F 70°F1012.2 hPa
MTKN6 - 8510560 - Montauk, NY 19 mi63 min 78°F 73°F1013.2 hPa
NWHC3 - 8465705 - New Haven, CT 36 mi63 min S 9.9 G 12 82°F 76°F1011.3 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 38 mi45 min S 14 G 16 78°F 1013.3 hPa74°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
4
PM
5
PM
6
PM
7
PM
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
Last
24hr
SW8
G11
SW6
G9
SW5
G8
SW4
SW4
S3
S2
S1
--
--
--
--
--
NE2
--
NE1
--
NE1
S6
S4
S10
S9
S8
G13
S9
G16
1 day
ago
S9
S8
SW6
G12
SW2
NW1
--
S3
S1
S2
S4
W1
W1
--
NW1
NW1
N1
N1
--
N4
G7
NW2
G6
N2
NW2
G5
W4
G7
SW8
2 days
ago
S7
S7
S5
G8
S5
G9
S4
S4
SW4
S4
S5
S3
SW4
G9
SW1
--
N1
N1
S4
S5
SE3
S4
S9
S7
S9
G12
S8
G11
S8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT12 mi19 minS 810.00 miFair79°F71°F77%1012 hPa
Chester, Chester Airport, CT18 mi20 minS 910.00 miMostly Cloudy84°F73°F70%1012.5 hPa
Montauk, Montauk Airport, NY20 mi21 minVar 4 mi81°F73°F79%1012.9 hPa

Link to 5 minute data for KGON

Wind History from GON (wind in knots)
4
PM
5
PM
6
PM
7
PM
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
Last 24hrSW11--SW6SW4CalmCalmCalmCalm----------N3N3Calm----SE5SE5SE8S9S10S11
1 day ago--SW5SW8CalmNW3CalmS5--------CalmN3Calm--CalmCalmN7N8NW7NW6SW6SW10SW12
2 days agoS5SE6S6CalmSW3SW5SW4--------SW3----CalmS5SE3--S5--S6S8S9S8

Tide / Current Tables for Plum Gut Harbor, Plum Island, Long Island Sound, New York
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Plum Gut Harbor
Click for Map
Wed -- 02:05 AM EDT     2.57 feet High Tide
Wed -- 06:04 AM EDT     Sunrise
Wed -- 08:39 AM EDT     0.65 feet Low Tide
Wed -- 11:40 AM EDT     Moonset
Wed -- 02:35 PM EDT     2.82 feet High Tide
Wed -- 07:39 PM EDT     Sunset
Wed -- 09:19 PM EDT     0.71 feet Low Tide
Wed -- 10:51 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
8
pm
9
pm
10
pm
11
pm
2.12.52.62.52.11.61.210.70.711.52.12.62.82.82.52.11.61.310.70.81.2

Tide / Current Tables for The Race, Long Island Sound, New York Current (2) (expired 1993-12-31)
   EDIT      (on/off)   Help   One Week of Data
The Race
Click for Map
Wed -- 12:49 AM EDT     2.24 knots Max Flood
Wed -- 03:45 AM EDT     -0.00 knots Slack
Wed -- 06:03 AM EDT     Sunrise
Wed -- 07:05 AM EDT     -2.53 knots Max Ebb
Wed -- 10:12 AM EDT     0.00 knots Slack
Wed -- 11:40 AM EDT     Moonset
Wed -- 01:09 PM EDT     2.42 knots Max Flood
Wed -- 04:10 PM EDT     -0.01 knots Slack
Wed -- 07:37 PM EDT     -2.68 knots Max Ebb
Wed -- 07:38 PM EDT     Sunset
Wed -- 10:51 PM EDT     Moonrise
Wed -- 10:54 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
8
pm
9
pm
10
pm
11
pm
1.92.21.70.9-0.3-1.6-2.3-2.5-2.3-1.5-0.20.81.82.42.11.30.2-1.1-2.2-2.6-2.6-2.1-10.1

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of    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 New York City/Upton, NY (16,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Upton, NY
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.