Saturday, July21, 2018 L-36.com


Marine Weather and Tides
New London, CT

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 5:32AMSunset 8:17PM Saturday July 21, 2018 9:25 PM EDT (01:25 UTC) Moonrise 3:04PMMoonset 1:08AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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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ANZ340 Peconic And Gardiners Bays- 734 Pm Edt Sat Jul 21 2018
.gale warning in effect until 6 am edt Sunday...
Tonight..E winds 20 to 25 kt with gusts up to 35 kt. Waves 2 to 4 ft. Chance of showers and tstms late this evening. Showers and chance of tstms after midnight. Vsby 1 to 3 nm late this evening and overnight.
Sun..S winds 15 to 20 kt. Gusts up to 30 kt in the morning. Waves 2 to 3 ft. Showers likely. Vsby 1 to 3 nm in the morning.
Sun night..S winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. Showers. Vsby 1 to 3 nm.
Mon..S winds around 15 kt with gusts up to 20 kt. Waves around 2 ft. Chance of tstms. Showers likely, mainly in the morning.
Mon night..S winds 10 to 15 kt. Waves 1 ft or less. Chance of showers and tstms.
Tue..S winds around 10 kt. Waves 1 ft or less.
Tue night..S winds around 10 kt. Waves 1 ft or less.
Wed..S winds around 10 kt. Waves 1 ft or less. Chance of showers and tstms.
Wed night..S winds 10 to 15 kt. Waves 1 ft or less. Chance of showers and tstms.
Thu..S winds 10 to 15 kt. Waves around 2 ft. Chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. Waves 1 ft or less. Chance of showers and tstms. Winds and waves higher in and near tstms.
ANZ300 734 Pm Edt Sat Jul 21 2018
Synopsis for the long island waters and new york harbor.. A potent storm will move up the coast this evening, and impact the area especially late tonight as the associated low pressure center passes to the west. A frontal boundary will remain west of the region through much of the week, while high pressure remains offshore.

7 Day Forecast for Marine Location Near New London, CT
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location: 41.26, -72.11     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 212358
afdokx
area forecast discussion
national weather service new york ny
758 pm edt Sat jul 21 2018

Synopsis
A potent storm will move up the coast this evening, and impact
the area especially late tonight as the associated low pressure
center passes to the west. A frontal boundary will remain west
of the region through much of the week, with an extended period
of unsettled weather with the chance of showers and
thunderstorms each day.

Near term until 6 am Sunday morning
Forecast on track this evening with just a few minor adjustments
to reflect latest observations. Otherwise, warm core non-
tropical low, with multiple low level centers seen on g16 vis
sat imagery just S of norfolk va, and impressive curved bands of
deep convection, one just N and E of the center and another e
of delmarva, will move across chesapeake bay this evening and
into eastern pa overnight. Buoy 44014 E of virginia beach was
gusting to 35-40 kt this afternoon, but suspect stronger winds
lie beneath the deep convection just north east of the center.

These strong winds should ride up along the DELMARVA and jersey
shore this evening, and impact our area tonight especially late
evening into the overnight. Latest hrrr brings a very strong
wind core with gusts 65-70 kt up to the south shore of nyc and
nassau, which from past experience with hrrr wind gusts is
likely overdone, but perhaps not by very much. Time-lagged hrrr
wind gust forecasts from earlier looked more reasonable, and so
issued a wind advy for western coastal sections for tonight
based on that guidance, along with GFS lamp guidance forecasting
advy criteria sustained winds to 30 kt at bridgeport ct, and
close to advy criteria at kjfk. If latest runs of hrrr are
correct there is still a chance that the advy for the south
shore harbor and ocean locations may have to be upgraded to a
high wind warning, especially if winds take on a more SE vs e
component.

Next concern is rainfall. Operational ECMWF hrrr have been
forecasting heavy rain bands capable of producing a quick 2-3
inches of rain either just west of or straddling our NE nj
counties, also additional similar rain bands running through
parts of western long island, the lower hudson valley, and sw
ct. Have higher confidence in the location of the westernmost
band but not those farther east, and since their coverage is not
widespread and href probabilities of 2+ inches of rain was
greatest just west of our area, opted against issuing a flash
flood watch. Depending on where these bands set up, will most
likely have to issue minor flood advisories, but will still
have to watch nyc closely for greater impacts to urban
infrastructure and possible flash flood warnings to address any
direct impact of that magnitude.

As these rain bands ride up into long island and southern ct,
combo of strong 0-1 km shear SRH and sfc-based instability with
sbcape approaching 1000 j kg may be enough to help produce low-
topped tstms capable of producing localized damaging winds or
a brief tornado.

A high rip current risk continues for the ocean waters.

Short term 6 am Sunday morning through Sunday night
By daybreak on Sunday, the heaviest rain should lift mainly
into eastern ct long island. As tropical moisture continues to
stream northward, chances for showers and isolated thunderstorms
increase into the afternoon and at night.

Temperatures will be near normal or a few degrees below average.

A high risk of rip currents is expected for Sunday.

Long term Monday through Saturday
Unsettled weather expected for the much of the long term period.

An upper level trough and surface front remain nearly stalled west
of the CWA as an atlantic ridge remains offshore.

Periods of showers and thunderstorms will remain likely through at
least the first part of Monday night, especially west of nyc. Pops
then lower on Tuesday and Tuesday night as the upper ridge pushes
back to the west. There does remain some uncertainty with this
feature and kept probabilities across the eastern zones slight
chance and kept chance probabilities to the west of nyc.

An upper level low moving across central canada on Wednesday slides
into the great lakes region by Thursday night. This will push the
trough and front closer to the region, with pops increasing once
again through this period. Its nearly impossible this far out to
time any showers and or thunderstorms and will keep at least some
50% chance pops in the forecast. The trough and front cross the
region during the Thursday night Friday morning timeframe with drier
weather expected for Friday. There may still be some lingering
precipitation, so will continue to maintain some low chance pops.

A tropical like airmass will remain in place next week with highs
each day in the 80s and lows mostly lower to mid 70s. Humidity
levels remain uncomfortable with dew points in the lower to mid 70s.

Aviation 00z Sunday through Thursday
Low pressure along the DELMARVA coast will track to the north to
northwest overnight, remaining to the west of the terminals.

A warm front moves into the terminals late in the overnight and
lifts to the north Sunday. During Sunday the low weakens and
tracks into the eastern great lakes region.

Easterly winds and gusts will increase this evening with
sustained to around 20 kt, and occasionally as high as 25 kt,
with gusts increasing to 35 to 40 kt. The highest winds and
gusts are expected to the at the coast terminals, especially
kjfk and kisp terminals.

Vfr quickly lowers to widespread ifr ceilings and vsbys from
south to north this evening. Moderate to occasionally heavy
rainfall is likely. Isolated thunderstorms will also be possible
as the warm front draws closer to the region, and have now
included a tempo from 04z to 10z.

Llws wind shear is likely overnight with a E to SE low-level
jet, strongest at the coastal terminals.

By Sunday morning, south southeast winds prevail, with gusts at
times in the 20 to 30 kt range. MVFR ceilings are likely, with
scattered showers expected through the end of the forecast
period, 00z Monday. There may be a brief period ofVFR
conditions, especially in the afternoon.

Outlook for 00z Monday through Thursday
Sunday night Mostly MVFR with a chance of ifr in shra and
isolated tstms.

Monday-Thursday MVFRVFR with periods of shra and a chance
of tstms. S gusts 20-25 kt.

Marine
Gale warning remains up for all waters tonight as the coastal
storm works its way up the coast, with sustained winds 25-35 kt
and gusts 35-45 kt expected. There is a chance that winds on the
western ocean waters and new york harbor may be quite a bit
stronger than this, and that this warning may have to be
upgraded to a storm warning. Will be watching coastal obs
along off the DELMARVA and jersey shore for guidance on this
potential.

Gales should subside Sunday morning as a strong southerly llj
shifts east of those waters, with elevated seas continuing.

Winds will remain below SCA levels on the forecast waters
Sunday night through Wednesday. However, with a prolonged
southerly flow and southerly swells, ocean seas will remain at
sca levels through Tuesday. Seas may briefly fall below 5 ft
Tuesday night into Wednesday, but SCA seas then return for
Wednesday night and Thursday.

Hydrology
Rainfall of 1-2 inches is likely in most areas from late tonight
into Sunday morning. Locally higher amounts are possible,
especially in any heavier or more persistent rain bands. Minor
urban and poor drainage flooding looks to be the main threat.

A flash flood threat does exist, but not at high enough
probability to warrant issuance of flash flood watches. This may
change as the coastal storm works its way closer to the area and
radar obs lend confidence on exact location of heavier rain
bands overnight.

A prolonged period of unsettled weather is expected through the
upcoming week, with the chance of showers and thunderstorms
each day. The focus of higher rainfall amounts are expected
along a frontal boundary setting up inland.

Tides coastal flooding
While astronomical tides remain low with the full moon still a
week off, strong e-se winds should result in surge of 2-3 feet,
high enough to yield brief minor coastal flooding in some
locations in around the ny bight, including the south shore of
staten island and the back bays of southern nyc and southern
nassau. The south shore of staten island may be more susceptible
to flooding as strong E winds and shape of the coastline pile up
water in raritan bay.

Equipment
Nyc NOAA weather radio station kwo-35 (162.55 mhz) remains off
the air for an extended period of time.

Okx watches warnings advisories
Ct... Wind advisory from 11 pm this evening to 6 am edt Sunday for
ctz009.

Ny... Wind advisory until 6 am edt Sunday for nyz072>075-080-176-178-
179.

Wind advisory from 11 pm this evening to 6 am edt Sunday for
nyz071-078-177.

High rip current risk until 9 pm edt this evening for nyz075-
080-081-178-179.

High rip current risk from 6 am edt Sunday through Sunday
evening for nyz075-080-081-178-179.

Nj... Wind advisory until 6 am edt Sunday for njz006.

Marine... Gale warning until 6 am edt Sunday for anz330-335-338-340-345-
350-353-355.

Synopsis... Bc goodman
near term... Bc goodman
short term... Goodman
long term... Bc
aviation... 19
marine... Bc goodman
hydrology... Bc goodman
tides coastal flooding...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 4 mi90 min E 21 G 24 67°F 1018.7 hPa62°F
NLNC3 - 8461490 - New London, CT 7 mi37 min ENE 7 G 13 68°F 72°F1017.8 hPa
MTKN6 - 8510560 - Montauk, NY 17 mi37 min 65°F 67°F1017.6 hPa
44039 - Central Long Island Sound 30 mi55 min E 19 G 25 67°F 3 ft
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 39 mi35 min E 21 G 25 68°F 72°F6 ft1016.5 hPa (-0.9)67°F
NWHC3 - 8465705 - New Haven, CT 42 mi37 min E 4.1 G 11 69°F 76°F1017.3 hPa
QPTR1 - 8454049 - Quonset Point, RI 44 mi37 min E 12 G 14 68°F 74°F1019.5 hPa
NWPR1 - 8452660 - Newport, RI 45 mi43 min ENE 9.9 G 12 67°F 71°F1018.9 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi43 min E 8.9 G 12 69°F 1019.4 hPa
NAXR1 - Narragansett Bay Reserve, RI 48 mi100 min ESE 6 69°F 1019 hPa64°F
PRUR1 49 mi37 min 68°F 63°F

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, CT6 mi29 minENE 14 G 2210.00 miOvercast68°F59°F73%1017.7 hPa
Montauk, Montauk Airport, NY16 mi31 minE 10 G 17 mi66°F64°F93%1018.1 hPa
Westerly, Westerly State Airport, RI18 mi32 minENE 810.00 miOvercast68°F61°F78%1018.5 hPa
Chester, Chester Airport, CT23 mi30 minE 710.00 miMostly Cloudy68°F59°F73%1017.9 hPa

Wind History from GON (wind in knots)
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Last 24hrSE5SE4SE4CalmCalmN3E5N3N4NE4E7E10E11E13E14
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1 day agoS4CalmCalmNW3N3CalmCalmCalmN3CalmCalmS4S6S7S7S9S10S10S8S8S8S7SE5SE6
2 days agoN5N4N5N3N5N7N4N6N10N7N8N64S7SW8S9S7S8S8S7S6S5S5S5

Tide / Current Tables for Little Gull Island, Long Island, New York
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Little Gull Island
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Sat -- 01:07 AM EDT     Moonset
Sat -- 05:23 AM EDT     2.00 feet High Tide
Sat -- 05:33 AM EDT     Sunrise
Sat -- 11:10 AM EDT     0.38 feet Low Tide
Sat -- 03:03 PM EDT     Moonrise
Sat -- 05:56 PM EDT     2.61 feet High Tide
Sat -- 08:15 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.81.11.51.8221.71.51.10.70.40.50.81.31.82.22.52.62.52.21.71.10.6

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Sat -- 01:07 AM EDT     Moonset
Sat -- 01:19 AM EDT     0.01 knots Slack
Sat -- 04:06 AM EDT     2.24 knots Max Flood
Sat -- 05:33 AM EDT     Sunrise
Sat -- 07:21 AM EDT     -0.00 knots Slack
Sat -- 10:15 AM EDT     -2.57 knots Max Ebb
Sat -- 01:29 PM EDT     0.00 knots Slack
Sat -- 03:03 PM EDT     Moonrise
Sat -- 04:27 PM EDT     2.49 knots Max Flood
Sat -- 07:48 PM EDT     -0.00 knots Slack
Sat -- 08:15 PM EDT     Sunset
Sat -- 10:51 PM EDT     -2.88 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.7-0.40.91.92.22.11.50.5-0.9-2-2.5-2.4-1.7-0.60.71.82.42.421.1-0.3-1.7-2.6-2.9

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (21,6,7,8)
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Ground Weather Radar Station Upton, NY
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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.