Sunday, August25, 2019 L-36.com


Marine Weather and Tides
Groton, 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 6:06AMSunset 7:34PM Sunday August 25, 2019 12:59 AM EDT (04:59 UTC) Moonrise 12:38AMMoonset 3:52PM Illumination 28% Phase: Waning Crescent; Moon at 24 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 1023 Pm Edt Sat Aug 24 2019
Overnight..NE winds 10 to 15 kt. Seas 1 ft or less, then 2 to 3 ft.
Sun..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sun night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Mon..NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Mon night..E winds 5 to 10 kt. Seas around 2 ft.
Tue..E winds 5 to 10 kt. Seas 1 ft or less.
Tue night..E winds around 5 kt. Seas 1 ft or less.
Wed..E winds around 5 kt. Seas 1 ft or less.
Wed night..SE winds around 5 kt, becoming W after midnight. Seas 1 ft or less. Chance of showers after midnight.
Thu..N winds around 5 kt, becoming W in the afternoon. Seas 1 ft or less.
Thu night..W winds around 5 kt. Seas 1 ft or less.
ANZ300 1023 Pm Edt Sat Aug 24 2019
Synopsis for the long island waters and new york harbor.. High pressure across the eastern canada region will continue to drift east through early next week. A cold front approaches Wednesday and moves through the forecast waters Thursday.


7 Day Forecast for Marine Location Near Groton city, CT
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location: 41.3, -72.08     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 250226
afdokx
area forecast discussion
national weather service new york ny
1026 pm edt Sat aug 24 2019

Synopsis
High pressure builds to the north through Sunday then drifts
east early next week. A cold front approaches Wednesday and
passes through the region Thursday. Another cold front passes
through late Friday into Saturday. High pressure returns late
Saturday.

Near term until 6 am Sunday morning
Minor adjustments made to cloud coverage, temperatures and
dewpoints. Clouds increased over western sections and decreased
over eastern sections. Forecast overall mainly on track.

Dry and pleasant conditions expected tonight as a large dome of
high pressure continues to build across the northeast.

Low temperatures tonight will be in the low to mid 50s inland
and upper 50s to lower 60s along the coast, except across the
long island pine barrens, where temperatures may fall into the
mid and upper 50s.

Short term 6 am Sunday morning through Sunday night
As high pressure drift to the east on Sunday, clouds will begin
to increase across the area. Light rain and drizzle is possible
Sunday and through Sunday afternoon primarily across coastal
areas. Otherwise, Sunday should remain generally dry.

High temperatures on Sunday will be in the low to mid 70s with
overnight lows in the 50s to around 60.

There is a moderate risk of rip current development at atlantic
ocean beaches Sunday morning. An increasing easterly swell
during Sunday will result in a high risk of rip current
development Sunday afternoon into Sunday evening.

Long term Monday through Saturday
Ridging along the east coast of the united states will
gradually weaken and drift into the western atlantic Monday
through Tuesday as a longwave trough from near alaska digs into
the northern plains and upper midwest. This longwave trough
will send a couple of cold fronts through the region Thursday
and Friday. The strongest front will be late Wednesday night
into Thursday. The upper trough weakens Thursday with the flow
becoming more zonal during Friday when another, and weaker, cold
front crosses the region.

Have now kept the region dry Monday and Tuesday as the lowest
levels are no longer saturated. However clouds are likely in
the moist easterly flow under the subsidence inversion.

With the front Wednesday into Thursday both CAPE and
instability will be limited, so will have showers with only
isolated thunder possible. There are some timing differences in
the timing of the frontal passage, but sided with the faster
guidance. Another weak cold front passes through Friday into
early Saturday with just a slight chance of showers as there
will be little moisture or forcing with the front. With the
upper trough weakening have slowed the timing of this second
front.

Aviation 03z Sunday through Thursday
High pressure builds over northern new england this weekend.

MainlyVFR is expected through the TAF period. There could be
some sprinkles or pockets of light rain on Sunday, with a
chance of MVFR ceilings, mainly at the coast.

Ne winds 5-10 kt overnight, will increase to 10-15 kt on Sunday
with gusts up to 20 kt. Best chance for gusts will be near the
coast.

Outlook for 00z Monday through Thursday
Sunday night Vfr. NE gusts up to 20 kt along the coast in
the evening.

Mon Vfr. NE gusts 20 kt along the coast.

Tue Vfr.

Wed MVFR possible. Showers and thunderstorms possible.

Thu Vfr.

Marine
Made adjustments to the wind gusts which were minimal across the
forecast waters. Otherwise, no changes were made at this time.

Small craft advisory conditions expected Sunday morning and
through Sunday night as wind gusts increase to 25 to 30 kt on
the ocean waters and seas build to 4 to 6 ft.

With a prolonged period of a strong and gusty easterly flow
continuing into Monday, SCA conditions are likely on the ocean
waters Monday and Monday night. The flow weakens Monday night
into midweek as high pressure retreats off the new england
coast and a cold front approaches. With the approach of the
front winds also gradually shift to the southeast and south. Sub
sca conditions are expected by Tuesday and continuing into
Thursday.

Hydrology
No hydrologic impacts are anticipated through the middle of next
week.

Tides coastal flooding
A prolonged period of easterly flow will gradually increase tide
levels into mid week. Localized minor coastal flooding will become
possible with the evening high tides along the south shore back bays
of queens and nassau counties by Monday, with the threat of minor
coastal flooding during the evening high tide cycles continuing
through the mid week period.

Equipment
Nyc NOAA weather radio station kwo35 (162.55 mhz) remains off
the air.

Okx watches warnings advisories
Ct... None.

Ny... High rip current risk from Sunday afternoon through Sunday
evening for nyz075-080-081-178-179.

Nj... None.

Marine... Small craft advisory from 6 am Sunday to 6 pm edt Monday for
anz350-353-355.

Synopsis... Fig met
near term... Fig jm met
short term... Fig
long term... Met
aviation... Dw
marine... Fig met
hydrology... Fig met
tides coastal flooding...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 4 mi60 min NE 1.9 G 4.1 63°F 70°F1025.1 hPa (+1.0)
MTKN6 - 8510560 - Montauk, NY 19 mi60 min 65°F 71°F1024.9 hPa (+0.9)
QPTR1 - 8454049 - Quonset Point, RI 41 mi66 min NNE 9.9 G 14 65°F 75°F1025.5 hPa
NWPR1 - 8452660 - Newport, RI 42 mi66 min NNE 2.9 G 5.1 64°F 66°F1025.2 hPa
NWHC3 - 8465705 - New Haven, CT 44 mi60 min E 2.9 G 6 66°F 73°F1024.8 hPa (+1.6)
NAXR1 - Narragansett Bay Reserve, RI 46 mi75 min NE 7 63°F 1026 hPa60°F
PRUR1 46 mi60 min 63°F 58°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi60 min NE 6 G 8.9 64°F 1025.9 hPa (+0.7)
CPTR1 - 8452944 - Conimicut Light, RI 48 mi60 min N 9.9 G 12 63°F 74°F1025.5 hPa (+0.5)

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT3 mi64 minN 510.00 miFair63°F55°F76%1025 hPa
Westerly, Westerly State Airport, RI15 mi67 minN 010.00 miFair61°F57°F90%1025.4 hPa
Montauk, Montauk Airport, NY17 mi66 minENE 6 mi66°F57°F75%1025.1 hPa
Chester, Chester Airport, CT23 mi65 minNE 410.00 miFair61°F57°F88%1025.7 hPa

Link to 5 minute data for KGON

Wind History from GON (wind in knots)
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Last 24hrN9N9N10N10N7N9N8N10N11N8N9N5CalmS8S8S6S6S4SE5SE3NE5NE6N5N5
1 day agoW3NW6NW3N7N6N6N4NW4N4CalmCalmCalmCalmSW8SW9SW7NW8NW5NW4CalmN3N5N6N9
2 days agoS5SW6W6SW3SW5SW4S3S3S5SW8SW9SW8SW9SW12SW13SW10SW8
G17
SW9W4NW5CalmCalmCalmW8

Tide / Current Tables for Silver Eel Pond, Fishers Island, N.Y.
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Silver Eel Pond
Click for Map
Sun -- 12:38 AM EDT     Moonrise
Sun -- 05:04 AM EDT     2.04 feet High Tide
Sun -- 06:07 AM EDT     Sunrise
Sun -- 11:43 AM EDT     0.64 feet Low Tide
Sun -- 03:51 PM EDT     Moonset
Sun -- 05:24 PM EDT     2.75 feet High Tide
Sun -- 07:32 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.81.21.71.9221.71.41.10.90.70.70.91.52.12.52.72.72.421.61.10.7

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Sun -- 12:38 AM EDT     Moonrise
Sun -- 01:29 AM EDT     0.00 knots Slack
Sun -- 04:12 AM EDT     2.03 knots Max Flood
Sun -- 06:07 AM EDT     Sunrise
Sun -- 07:30 AM EDT     -0.00 knots Slack
Sun -- 10:33 AM EDT     -2.24 knots Max Ebb
Sun -- 01:32 PM EDT     0.00 knots Slack
Sun -- 03:51 PM EDT     Moonset
Sun -- 04:33 PM EDT     2.38 knots Max Flood
Sun -- 07:32 PM EDT     Sunset
Sun -- 07:51 PM EDT     -0.00 knots Slack
Sun -- 11:07 PM EDT     -2.85 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.5-0.50.61.521.81.20.5-0.5-1.5-2.1-2.2-1.6-0.60.51.52.32.31.70.9-0.2-1.4-2.4-2.8

Weather Map and Satellite Images
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wmap_A
GOES 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 New York City/Upton, NY (0,6,7,8)
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Ground Weather Radar Station Boston, MA
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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.