Sunday, February18, 2018 L-36.com


Marine Weather and Tides
Mashantucket, CT

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:36AMSunset 5:27PM Sunday February 18, 2018 4:00 AM EST (09:00 UTC) Moonrise 9:15AMMoonset 9:21PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 347 Am Est Sun Feb 18 2018
.small craft advisory in effect from 7 am this morning to 1 pm est this afternoon...
Today..NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 5 to 10 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft.
Tonight..W winds around 5 kt, becoming se after midnight. Seas 2 to 4 ft.
Mon..S winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. A chance of showers.
Mon night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Tue..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 nm or less.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Wed..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Thu..N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers.
Thu night..NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. 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 347 Am Est Sun Feb 18 2018
Synopsis for massachusetts and rhode island coastal waters.. A fast moving coastal low will pass southeast of nantucket early today. High pres will build across the waters tonight and Mon. The high will move offshore Mon night, then a warm front will push N of the waters Tue. A cold front may push across the waters late Wed or Wed night. 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 Mashantucket, CT
   Hourly   EDIT   Help
location: 41.46, -71.97     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 180528
afdokx
area forecast discussion
national weather service new york ny
1228 am est Sun feb 18 2018

Synopsis
Low pressure passes to our southeast overnight, followed by
high pressure for Sunday. The high then slides offshore through
Monday. A warm front approaches from the southwest Monday night,
then lifts to the north Tuesday, followed by a slow moving cold
front crossing the area during the middle week. High pressure
may briefly build in to close the upcoming work week, before
another frontal system approaches for the weekend.

Near term until 6 am this morning
Rain snow line, based on dual-pol, has made progress to south
coast of LI nyc as of 03z, but is also eroding as it does so.

Meanwhile, back edge of steady accumulating snow is beginning
to make progress eastward into orange county.

Widespread reports of 5 to 8" across interior NE nj and lower
hud as of 10 pm. Generally 2 to 5" across nyc metro, 3 to 6"
across SW ct, and 1 to 3 across LI SE ct as of 10 pm.

Based on low pressure deepening to the SE of buoy 44066,
expectation is that rain snow line does not much make much
progress north of belt pkwy southern state across western li,
and stalls btwn sunrise hwy and lie across suffolk county over
the next couple of hours. This is fairly consistent with
previous forecast and nam. Expectation of a significant snow
gradient across li, from around an inch across the south shore
of the south fork of LI to 4 to 7 inches for the hills of nw
suffolk and nassau county.

Heaviest total snow, 6 to 10", expected across NE nj lower hud
and southern ct based on upstream obs and most persistent
moderate to heavy snow banding continuing over the next few
hours with surface temps in the upper 20 to lower 30s.

Wsw's remain as is. Snow should begin to taper from W to e
between 6z and 10z.

Short term 6 am this morning through 6 pm Monday
Ridging at the surface and aloft occurs on Sunday, with high
pressure shifting offshore on Sunday night. Dry weather through the
period with a mostly clear sky. Sided with the colder side of
guidance for temperatures due to a fresh snow pack.

Long term Monday night through Saturday
Anomalously strong bermuda east coast ridging develops early this
week and continues into midweek, in response to deep western
troughing. The western trough will gradually shear NE in piecemeal
fashion for the late week weekend, resulting in a transition to a
bit more suppressed but active confluent SW upper flow.

At the surface, high pressure slides off the coast on Monday, and
then becomes established under the upper ridge by midweek. Meanwhile
a slow moving frontal system will cross through the mississippi
river valley the first half of the week. Its warm front likely
approaches Monday night with rain and then gets pushed north of the
region on Tuesday. An unseasonably warm SW flow is likely Tue wed
under deep layered ridging, with highs around 70 possible for nyc nj
metro and areas n&w on Tue and lower to mid 70s on wed. Meanwhile
south coastal areas may struggle to get out out of the 50s due to
the cold water temp. Coastal advection stratus fog and nocturnal
radiation fog is possible during this time as well.

Models in general agreement with the eastern ridging breaking down
enough, to allow a stream of shortwave energy to approach and push
an approaching cold front towards and through the region Wed night.

This likely brings another round of rain to the region Wed night
through Thursday.

Potential for brief ridging Friday, before next shortwave and
associated frontal system affect the region on Saturday with another
round of rain.

Temps during the period expected to average well above average, with
high temps potentially 25-30 degrees above normal Tue and Wed for
nyc nj metro and areas n&w..

Aviation 06z Sunday through Thursday
Deepening low pressure tracks southeast of montauk point
overnight, and then to the northeast and east Sunday morning as
high pressure builds to the west. The high builds over the
terminals Sunday, then moves off the northeast coast Sunday
night.

Light snow, with rain and or snow across the twin forks of long
island will be ending overnight into early Sunday morning, 08z
at kswf to 12z at kgon. Ifr to lifr will quickly improve toVFR
as the precipitation ends.

Northerly winds less than 10 kt back to the northwest as the
low tracks southeast of montauk point overnight into early
Sunday morning. NW winds will increase to 10-15 kt, with gusts
18 to 25 kt during the day Sunday. Gusts and winds diminish
during the afternoon, 18z to 19z, and then become light and
variable by 00z Monday.

Outlook for 06z Monday through Thursday
Late Sunday night-Monday Vfr. Becoming MVFR to ifr in rain
and possibly fog Monday afternoon.

Tuesday MVFR or ifr possible in the morning and again at night,
otherwiseVFR with SW wind g20kt possible.

Wednesday Vfr. Chance of showers with MVFR.

Thursday MVFR in rain.

Marine
Sca for the ocean waters for Sunday morning into early
afternoon with increasing winds and seas. There could be some
gusts to 25 kt Sunday morning over the eastern sound and eastern
bays, but coverage didn't warrant an advisory. Sub-sca conds
otherwise tonight and from late Sunday afternoon through Sunday
night.

Generally sub-advsy winds expected Mon through wed, but a persistent
15 to 20 kt SW flow may have sea building to SCA levels Tue wed.

Seas should subside Wed night into Thu as a weak cold front passes
through and winds become offshore.

Hydrology
Around 1 2 to 3 4 an inch of liquid equivalent is expected Saturday
night with locally higher amounts. With most, if not all of this
falling in the form of snow, no hydrologic impacts are expected.

No significant hydrologic impacts are expected from Sunday through
the end of next week.

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

Okx watches warnings advisories
Ct... Winter storm warning until 7 am est this morning for
ctz005>012.

Ny... Winter weather advisory until 7 am est this morning for nyz067-
068-074-075-079>081-178-179.

Winter storm warning until 7 am est this morning for
nyz069>073-078-176-177.

Nj... Winter storm warning until 7 am est this morning for njz002-
004-006-103>108.

Marine... Small craft advisory from 6 am this morning to noon est today
for anz350-353-355.

Synopsis... Jc nv
near term... Jc nv
short term... Jc
long term... Nv
aviation... 19
marine... Jc nv
hydrology... Jc nv
equipment...



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 9 mi42 min N 1.9 G 4.1 33°F 38°F1012.2 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 12 mi50 min NNW 8 G 8 34°F 1015.4 hPa34°F
MTKN6 - 8510560 - Montauk, NY 28 mi42 min 37°F 38°F1012.4 hPa
QPTR1 - 8454049 - Quonset Point, RI 31 mi48 min NNW 6 G 8 33°F 38°F1012.3 hPa
NWPR1 - 8452660 - Newport, RI 34 mi42 min N 7 G 8 34°F 37°F1011.6 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 36 mi48 min N 4.1 G 7 33°F 1011.9 hPa
NAXR1 - Narragansett Bay Reserve, RI 36 mi75 min N 6 33°F 993 hPa33°F
CPTR1 - 8452944 - Conimicut Light, RI 38 mi42 min NNW 8 G 9.9 32°F 36°F1011.8 hPa
PVDR1 38 mi42 min Calm G 0 32°F 1012.3 hPa32°F
FOXR1 - 8454000 - Providence, RI 39 mi48 min NE 4.1 G 8 32°F 37°F1011.8 hPa
44039 - Central Long Island Sound 43 mi45 min NW 3.9 G 3.9 35°F 1 ft
FRXM3 45 mi42 min 34°F 33°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 45 mi42 min NW 5.1 G 5.1 34°F 1011.1 hPa
FRVM3 - 8447386 - Fall River, MA 46 mi48 min 34°F 38°F1012.2 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
Last
24hr
N8
N5
G11
N6
N3
G6
NE3
N2
G7
N2
S5
G8
S6
G11
S10
G16
S7
G12
S9
E4
G8
S3
SE5
G9
S3
SE5
E2
E2
G6
N3
N5
N4
G8
N4
1 day
ago
--
--
--
SW2
--
--
S2
SW4
G7
W5
G10
W6
G11
NW4
G9
NW3
G9
N6
G10
N6
G13
NW6
G9
N8
G12
N7
G13
NW5
G12
N11
G18
N8
G14
N9
G12
N9
G15
N4
G8
2 days
ago
S1
SW6
G10
SW5
G8
S3
S3
SW5
G8
SW5
SW5
SW7
G10
SW2
G7
SW1
S2
S2
S2
S1
--
S4
S2
--
--
--
N1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT10 mi64 minN 05.00 miLight Rain Fog/Mist34°F32°F92%1012.5 hPa
Westerly, Westerly State Airport, RI12 mi67 minN 03.00 miLight Rain Fog/Mist34°F34°F100%1012.6 hPa
Willimantic, Windham Airport, CT23 mi68 minN 02.50 miLight Snow Fog/Mist32°F30°F92%1013.1 hPa

Wind History from GON (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
Last 24hrN6N6N6N5N8N7CalmS7SE9SE11--SE11S10E6----SE8E8E7E10NE5N6N4Calm
1 day agoCalmCalmCalmCalmCalmS4SW5W8W7W7NW10NW11NW13
G23
NW13
G19
NW14
G22
NW15
G24
NW13
G24
NW14
G21
NW14
G21
N13
G21
NW14
G21
N13NW11N6
2 days agoS5SW9S10W4SW6SW6SW7S6SW7SW6SW6S4SW4CalmSW3SW3SW6E4S3SE4CalmCalmCalmS5

Tide / Current Tables for Norwich, Thames River, Connecticut
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Norwich
Click for Map
Sun -- 05:25 AM EST     -0.06 feet Low Tide
Sun -- 06:39 AM EST     Sunrise
Sun -- 08:14 AM EST     Moonrise
Sun -- 11:25 AM EST     3.12 feet High Tide
Sun -- 05:25 PM EST     Sunset
Sun -- 05:45 PM EST     -0.18 feet Low Tide
Sun -- 08:21 PM EST     Moonset
Sun -- 11:49 PM EST     3.06 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.92.41.710.4-000.61.52.32.83.13.12.61.91.10.5-0-0.20.31.122.63

Tide / Current Tables for The Race, Long Island Sound, New York Current
   EDIT      (on/off)   Help   One Week of Data
The Race
Click for Map
Sun -- 12:47 AM EST     -0.00 knots Slack
Sun -- 03:52 AM EST     -3.13 knots Max Ebb
Sun -- 06:38 AM EST     Sunrise
Sun -- 06:57 AM EST     0.01 knots Slack
Sun -- 08:14 AM EST     Moonrise
Sun -- 09:50 AM EST     2.89 knots Max Flood
Sun -- 12:58 PM EST     -0.00 knots Slack
Sun -- 04:10 PM EST     -3.23 knots Max Ebb
Sun -- 05:25 PM EST     Sunset
Sun -- 07:16 PM EST     0.01 knots Slack
Sun -- 08:21 PM EST     Moonset
Sun -- 10:12 PM EST     2.98 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1-0.3-1.7-2.8-3.1-2.6-1.40.11.52.62.92.31.3-0-1.4-2.6-3.2-2.9-1.8-0.41.12.332.7

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for New York City/Upton, NY (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (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.