Tuesday, August11, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Old Mystic, CT

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 5:52AMSunset 7:54PM Tuesday August 11, 2020 8:57 PM EDT (00:57 UTC) Moonrise 11:58PMMoonset 1:31PM Illumination 44% Phase: Third Quarter Moon; Moon at 23 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
ANZ237 Block Island Sound- 716 Pm Edt Tue Aug 11 2020
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog. A slight chance of showers with isolated tstms after midnight. Vsby 1 to 3 nm.
Wed..SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 nm.
Wed night..SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Thu..NW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft.
Thu night..S winds around 5 kt, becoming ne around 5 kt after midnight. Seas around 2 ft. A chance of showers and tstms.
Fri and Fri night..E winds 5 to 10 kt. Seas 2 to 4 ft.
Sat through Sun night..E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 716 Pm Edt Tue Aug 11 2020
Synopsis for massachusetts and rhode island coastal waters.. High pres se of the waters through tonight. A cold front will sag se into the nrn coastal waters Wed, and linger around the srn coastal waters through Thu. High pres over se canada dominates our weather this weekend into early next week. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.


7 Day Forecast for Marine Location Near Old Mystic, CT
   Hourly   EDIT   Help
location: 41.39, -71.98     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KOKX 112354 AFDOKX

Area Forecast Discussion National Weather Service New York NY 754 PM EDT Tue Aug 11 2020

SYNOPSIS. Shortwave trough to the north exits New England tomorrow morning. Trailing cold front initially pushes south through the Lower Hudson Valley but then stalls along the East Coast. A frontal boundary will remain stalled south of the region through the weekend. A warm front will pass during the beginning of next week.

NEAR TERM /THROUGH WEDNESDAY/. Weak shortwave trough over southern Quebec continues to promote a moist south flow locally. Low stratus should continue to develop and/or spread into coastal areas this evening. For the northern counties, this evening and overnight additional isolated showers and thunderstorms will be possible along a trailing cold front. This front is associated with the aforementioned shortwave to the north that is expected to exit New England tomorrow morning. Precipitable water values are about 1.60 inches which is around the daily average. With that, QPF amounts should be around 0.10-0.25 inches possible for counties mainly along the Lower Hudson Valley.

SHORT TERM /WEDNESDAY NIGHT THROUGH 6 PM WEDNESDAY/. By Wednesday morning, the front is expected to stall across Long Island. South winds will continue to dominant through the morning with dew points remaining in the low 70s for most of the area. Though a scattered to broken cumulus field may develop by late morning ambient temperatures should still reach the upper 80s. This leads to Heat Index values in the mid 90s and as a result a Heat Advisory is in effect for tomorrow afternoon.

Reprieve from the heat is probable after daytime highs. With the already moist environment, storms could begin in the early afternoon as a combination of the seabreeze and southerly winds collides with the stalled front. The showers increase in coverage as the day progresses. Total QPF from these showers and thunderstorms will depend heavily on there movement after they development. It is possible that training storms could produce up to an inch of rainfall in a single location increasing the possibility of isolated nuisance flooding in areas of poor drainage.

LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/. A frontal boundary is progged to remain nearly stationary south of Long Island thru the weekend. Shortwave energy embedded in the flow will provide the focus for rounds of pcpn. The trend has been a bit further north with pcpn over the weekend. Confidence in the timing and placement of any of these convectively induced features is very low. Therefore, pops have capped at the chance level, and were based on the NBM. For Fri, the NAM indicates a band of very hvy rainfall across the area. This again is a low confidence prog however. It does send the signal that the pattern is conducive to a swath of very hvy rainfall in the region if the ingredients come together. PWATS are fcst around 2 inches. A warm front is progged to impact the area in the Mon-Tue time period, followed by a cold front. The ECMWF is much quicker than the GFS, which has slowed from previous runs. Pops were limited to slight chance this far out due to the timing uncertainty. Seasonal temps are expected thru the extended. The NBM with local adjustments was used.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/. A cold front moves towards the area late tonight and moves very slowly or stalls before passing to the south and east Wednesday evening.

IFR stratus expected to expand tonight, eventually reaching all terminals except KSWF. Showers possible tonight, primarily at KSWF, but could hold together and reach the city terminals towards around 08z. Will maintain VCSH in the forecast as confidence here is lower.

S-SW Winds diminish to less than 10 kt, with outlying terminals becoming light and variable later this evening. Wednesday morning winds will be SW 5 to 10 kt, except at KSWF where winds will be northwest. Afternoon sea breezes are expected Wednesday.

OUTLOOK FOR 00Z THURSDAY THROUGH SUNDAY. Thursday. Chance of showers and thunderstorms with MVFR or lower conditions. Coastal IFR conditions possible Wednesday night. Friday. Chance of showers and thunderstorms with MVFR conditions. Saturday through Sunday. MVFR with a slight chance of showers.

MARINE. Marine fog could be an issue over the ocean and for portions of the eastern Long Island Sound after midnight. Low status could fill in as the light winds and additional moisture couple with cooling overnight temperatures. No advisories have been issued as of yet but will have to monitor closely for development. Any fog should mix into stratus by the late morning.

Winds and seas should remain blw sca lvls Thu into Fri. Increased ely flow behind a cold front could then produce sca conditions, especially on the ocean, late Fri into Mon.

HYDROLOGY. Precipitable water values will increase to around 2 inches Wednesday night into Thursday as a cold front stalls across the area. With weak flow aloft, minor flooding will be possible in any showers and thunderstorms, primarily in urban and other poor drainage areas.

No hydrologic impacts expected Thu thru Tue. There is a low chance that a round of hvy rain could develop within the Thu-Sat time frame due to a stalled front and deep moisture, but confidence is extremely low attm.

OKX WATCHES/WARNINGS/ADVISORIES. CT . Heat Advisory until 8 PM EDT Wednesday for CTZ005>010. NY . Heat Advisory until 8 PM EDT Wednesday for NYZ067>075-176>179. NJ . Heat Advisory until 8 PM EDT Wednesday for NJZ002-004-006- 103>108. MARINE . None.

SYNOPSIS . JMC/DJ NEAR TERM . JMC/JC/DJ SHORT TERM . DJ LONG TERM . JMC AVIATION . JC/MET MARINE . JMC/DJ HYDROLOGY . FEB


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
NLNC3 - 8461490 - New London, CT 6 mi58 min 78°F 75°F1014.3 hPa (+0.0)
MTKN6 - 8510560 - Montauk, NY 24 mi58 min 76°F 74°F1015 hPa (+0.0)
QPTR1 - 8454049 - Quonset Point, RI 33 mi58 min 77°F 80°F1014.8 hPa (+0.3)
NWPR1 - 8452660 - Newport, RI 36 mi58 min 75°F 72°F1014.9 hPa (-0.0)
NAXR1 - Narragansett Bay Reserve, RI 38 mi73 min WSW 7 77°F 1015 hPa73°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 38 mi58 min 77°F 1015.4 hPa (+0.4)
PRUR1 39 mi58 min 77°F 76°F
CPTR1 - 8452944 - Conimicut Light, RI 41 mi58 min 78°F 79°F1014.5 hPa (+0.6)
FOXR1 - 8454000 - Providence, RI 42 mi58 min 81°F 80°F1014.3 hPa (+0.6)
PVDR1 42 mi58 min 81°F 1014.5 hPa (+0.5)71°F
FRXM3 47 mi58 min 78°F 74°F
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 48 mi28 min S 9.7 G 12 75°F 74°F1014.9 hPa75°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 48 mi58 min 78°F 1014.7 hPa (+0.4)
FRVM3 - 8447386 - Fall River, MA 48 mi58 min 78°F 80°F1015.2 hPa (+0.4)

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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
8
PM
Last
24hr
SW3
G8
SW3
G7
SW4
S4
G7
SW4
G7
S7
S5
SW2
S3
S3
S3
S5
S5
S6
S10
S11
S10
S9
G13
S10
G15
SW11
G14
S9
G13
SW9
G14
SW8
G15
S7
G10
1 day
ago
SW7
SW4
G10
SW5
SW4
SW5
SW4
S4
S2
S3
W1
S1
W4
G7
NW2
--
S10
S10
S7
G10
S11
S9
S9
G12
S10
G16
SW9
G15
SW7
G10
SW7
G11
2 days
ago
S5
S6
S6
S4
S4
S7
S4
SW4
SW1
G4
SW2
SW3
S5
SW6
SW4
G7
S7
G13
S8
G12
SW9
G14
S10
S10
S11
S9
S10
S8
SW8
G12

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, CT6 mi62 minSSW 109.00 miMostly Cloudy76°F73°F94%1014.3 hPa
Westerly, Westerly State Airport, RI10 mi65 minSSW 810.00 miOvercast77°F73°F88%1014.9 hPa
Montauk, Montauk Airport, NY22 mi64 minVar 5 mi77°F75°F94%1015.2 hPa

Link to 5 minute data for KGON

Wind History from GON (wind in knots)
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
8
PM
Last 24hrSW3SW5SW4W5S4S4S4SW5SW3SE3CalmS4S5S5S8S6S9S6S11S9S8SW8SW7SW10
1 day agoSW7SW3W5SW3SW3SW3SW3CalmCalmW4SW3SW3CalmS7SW9SW9SW8S9S7S7SW10SW9SW8SW9
2 days agoSE3S4SE4SE4SE5SE4S5SW3CalmCalmCalmSW6S7S8SW7SW8S6S7S9S9S8S9S5SW7

Tide / Current Tables for Noank, Mystic River entrance, Connecticut
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Noank
Click for Map
Tue -- 03:06 AM EDT     2.01 feet High Tide
Tue -- 05:53 AM EDT     Sunrise
Tue -- 09:57 AM EDT     0.67 feet Low Tide
Tue -- 12:47 PM EDT     Last Quarter
Tue -- 01:31 PM EDT     Moonset
Tue -- 03:39 PM EDT     2.41 feet High Tide
Tue -- 07:51 PM EDT     Sunset
Tue -- 10:45 PM EDT     0.67 feet Low Tide
Tue -- 11:58 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
1.31.71.921.91.71.51.210.80.70.91.31.82.12.42.42.221.71.410.80.7

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
Tue -- 12:04 AM EDT     0.00 knots Slack
Tue -- 02:31 AM EDT     1.84 knots Max Flood
Tue -- 05:32 AM EDT     -0.00 knots Slack
Tue -- 05:54 AM EDT     Sunrise
Tue -- 09:03 AM EDT     -2.19 knots Max Ebb
Tue -- 12:04 PM EDT     0.00 knots Slack
Tue -- 12:47 PM EDT     Last Quarter
Tue -- 01:31 PM EDT     Moonset
Tue -- 02:50 PM EDT     2.11 knots Max Flood
Tue -- 05:58 PM EDT     -0.00 knots Slack
Tue -- 07:51 PM EDT     Sunset
Tue -- 09:38 PM EDT     -2.54 knots Max Ebb
Tue -- 11:58 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
-0.111.71.81.30.6-0.5-1.5-2-2.2-1.9-1-0.10.91.82.11.71.1-0-1.2-2-2.4-2.5-1.9

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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 (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. 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. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. 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 numerous 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.