Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Stonington, CT

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 5:51AMSunset 7:39PM Tuesday April 24, 2018 8:29 PM EDT (00:29 UTC) Moonrise 1:53PMMoonset 3:12AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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 Apr 24 2018
.small craft advisory in effect from 4 am edt Wednesday through Thursday morning...
Tonight..SE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely after midnight.
Wed..SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Areas of fog. Rain with a chance of tstms. Vsby 1 nm or less.
Wed night..SE winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 6 to 9 ft. Areas of fog. Rain with a chance of tstms. Vsby 1 nm or less.
Thu..W winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to 8 ft. Areas of fog. A chance of showers. Vsby 1 to 3 nm.
Thu night..W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft.
Fri..S winds 5 to 10 kt, becoming se 10 to 15 kt in the afternoon. Seas 3 to 5 ft. A chance of showers.
Fri night..S winds 10 to 15 kt with gusts up to 20 kt, becoming sw 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of showers.
Sat..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Sat night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 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 Apr 24 2018
Synopsis for massachusetts and rhode island coastal waters.. Low pressure will move up the eastern seaboard late tonight and Wednesday bringing areas of rain and isolated Thunderstorms, then move to the gulf of maine by midday Thursday. Another low will across the waters Saturday morning. High pressure will build in from the west late Saturday and Sunday. 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 Stonington , CT
   Hourly   EDIT   Help
location: 41.33, -71.89     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbox 242323
afdbox
area forecast discussion
national weather service boston norton ma
723 pm edt Tue apr 24 2018

Synopsis
Low pressure approaching from the southwest will bring a soaking
wind swept rain to the region very late tonight and Wednesday with
localized heavy downpours. This may result in some brief nuisance
poor drainage street flooding. Other than a few brief showers
possible mainly dry weather follows Thursday through Saturday along
with seasonably mild temperatures. A brief cool down expected on
Sunday, but this will be short lived as unseasonably warm
temperatures are possible by the middle of next week.

Near term until 6 am Wednesday morning
715 pm update...

only adjustment to the forecast is to delay the onset of rain
by a couple hours or so based on latest model and observed
trends. Otherwise, the forecast remains on track.

400 pm update...

dry weather prevails this afternoon as high pressure east of the
region continues to influence the area. Plenty of mixing across the
area which has resulted in temperatures warming into the upper 60s
and low 70s. Southwest wind gusts have reached around 20-25 mph, but
should subside by sunset. Aside from a few minor tweaks, the
forecast remains quiet and on track for this evening.

Tonight...

southern stream low pressure system and approaching upper level
trough from the upper midwest will bring periods of rainfall late
tonight and into tomorrow.

Model trends have slowed the onset time just slightly for the onset
of the warm advection rainfall. This is due to such a dry airmass in
the mid-levels (700-800mb). Bufkit soundings moisten the profile out
west by 06z and over the east around 10z. Thus went ahead and slowed
the timing. Aside, expect clouds to thicken and lower during the
overnight hours before the precipitation begins to fall. Anticipate
showers to start due to isentropic lift and in the WAA pattern.

Heavier precip will fall by 09-12z from west to east towards the
morning hours.

Because of the increase cloud cover, overnight temperatures will be
mild as radiational cooling will be limited. Lows will remain in the
mid 40s.

Short term 6 am Wednesday morning through Wednesday night
Wednesday into Wednesday night...

*** heavy rainfall and isolated thunder for Wednesday ***
southern stream surface low will approach the region on Wednesday as
northern stream trough swings into the area from southern
canada. This surface low will move across the region, allowing
for the southern half of sne to become warm sectored. This upper
level trough will continue to dig and go negativly tiled
pushing the surface low up into teh gulf of maine by Thursday
morning.

Rainfall...

steady rainfall will stream into the region by Wednesday morning as
pwat values increase to 1.3 inches, 1-2 std above normal. Associated
with this system, strong LLJ nearing 3 std above normal will allow
for strong moisture transport into the region. Right now appears
that widespread 1-2 inches of rainfall will occur through Wednesday
night. Think the highest amounts will occur across the worcester
hills and the east slope of the berks where upslope flow will help
create a bit more lift. Cannot rule out the potential for 2+
inches in that region, which is indicated by the arw. Still with
this much rainfall, appears the the main stem rivers will
remain in their banks per nerfc's forecast and mmefs. Still, we
will have to watch some of the flashy streams. Right now believe
that urban and poor drainage flooding will be the main threat.

Precip will come to an end by late Wednesday into the overnight
hours as main jet lifts farther north. Models also show some
drying into the mid to upper levels which could result in
showery weather towards Thursday morning.

Wind...

as mentioned before, strong LLJ increases during the day on
Wednesday reaching close to 3 std above normal. In fact, 925mb winds
increase between 50-60 kts. Believe that most of this wind will
remain elevated as soundings show a strong inversion across the
area. However, could see some mixing near the southeast coastal
plain where the potential for thunder could bring down a few strong
winds gusts. Also appears to be a narrow window where lapse rates
may be steep enough. Believe that we could see somewhere near 25-35
mph across the southeast coastal plain. Will hold off in any adv for
this time as confidence is not that high.

Thunder...

a low risk for thunder during the day on Wednesday as we warm
sector just a bit by the afternoon hours. Models indicate that
showalters drop below 0 and there is some elevated CAPE nearing
a few hundred jules. Like the timing of the SPC href mu CAPE so
tried to incorporate that into the forecast. Biggest risk would
be heavy rainfall and some gusty winds within any thunderstorm.

Fog...

as the system begins to wind down late Wednesday night into Thursday
morning, we may have to watch for the potential for fog. High
dewpoint airmass will still be over the region Wednesday night and
with some drying in the mid-levels, low levels appear to remain
saturated. Winds also appears to be light. So aside from some
showers moving across the region, may have to watch for patchy dense
fog, especially across the south coast.

Long term Thursday through Tuesday
Highlights...

* other than a few possible brief showers mainly dry and seasonable
thu Fri sat
* dry but noticeably cooler and blustery sun
* moderating temps Monday and likely in the 70s Tue & wed!!!
details...

Thursday...

moist southern stream trough moving offshore around daybreak
followed by a drying trend through the morning and especially the
afternoon. The only wildcard will be a potent northern stream short
wave that moves across ny state into vt nh during the afternoon.

Cold temps aloft (-20c at h5) combined with cyclonic flow will yield
a risk for a few afternoon showers. However given the column dries
significantly any shower threat will likely be confined to northern
ma along the nh border where greatest moisture is available.

Otherwise mainly dry weather prevails much of the afternoon with at
least partial sunshine especially across ct ri and southeast ma with
more clouds over northern ma. Seasonably mild with highs in the 60s,
cooler along the south coast given southwest winds off the cool
ocean waters. It will be somewhat breezy with wsw winds 15-20 mph
gusting up to 25 mph.

Friday and Saturday...

Friday's forecast has the most uncertainty as southern stream short
wave trough approaches from the southwest. This trough will be in
the process of deamplifying. So despite deep layer moisture
associated with this trough, forcing for ascent will be on a
downward trend. Thus not expecting a washout but can't rule out
scattered showers. Seasonably mild with highs once again in the 60s
except cooler along the south coast with SW winds off the cooler
ocean.

As for sat, vigorous northern stream trough approaches from the
northwest along with attending surface cold front. However limiting
factor for rainfall is lack of deep layer moisture. Thus only
expecting risk of a few showers with most locations possibly
remaining dry. Mild once again with highs in the 60s, 50s south
coast.

Sunday...

dry weather but noticeably cooler and blustery behind frontal
passage Sat night into Sunday with 850 temps down to about -2c (1
standard deviation cooler than climo). This will only support highs
in the 50s but will feel cooler given blustery wnw winds.

Monday and Tuesday...

deep mid level trough moves offshore with height rises and a warming
trend developing as east coast ridging commences toward mid week.

Dry weather much of this period with Monday the transition day, a
cool morning giving way to a mild afternoon. Deterministic and
ensemble guidance support highs in the 70s Tue and wed. Normal high
is 60-65.

Aviation 23z Tuesday through Sunday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday night ... Moderate to high confidence.

ExpectVFR into the early morning hours. Winds will shift to
the east southeast between 06z and 09z.

MVFR dropping to ifr towards Wednesday SW to NE generally
between 10z and 14z. Rain will quickly overspread the region as
winds remain ese. Ifr lifr is possible during the late morning
into the afternoon with +ra and iso thunder. Low risk for 35 kt
gusts across the southeast coastal plain. Otherwise strong llws
through much of the day.

Wednesday night... Ifr with possible lifr across the area.

Improving to MVFR towards dawn on Thursday. +ra remains trending
towards showery weather after midnight. Could be low vsbys along
the south coast in fog through much of the night.

Kbos terminal... High confidence in taf. May get the first part
of the morning rush through inVFR, albeit lowering cigs.

However, E to SE wind accompanied by rain likely keep CIGS low
late morning into Wed night. Low risk for tsra after 21z.

Kbdl terminal... High confidence in taf. Morning rush could be
impacted with +ra.

Outlook Thursday through Sunday ... Moderate to high
Thursday: mainlyVFR, with local MVFR possible. Breezy. Slight
chance shra.

Thursday night:VFR.

Friday: mainlyVFR, with areas MVFR possible. Chance shra.

Friday night: mainly MVFR, with local ifr possible. Slight
chance shra.

Saturday: mainlyVFR, with areas MVFR possible. Slight chance
shra.

Saturday night:VFR.

Sunday:VFR. Breezy.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday night ...

tonight... High confidence. Approach surface low will switch
winds to the ese and gusts to near 25kts. Seas will build as a
response resulting in sca.

Wednesday and Wednesday night... Moderate confidence.

Small craft advisory winds with gusts up to 30 kt and a low
risk for a few 35 knot gusts early in the evening across the
southeast waters. Rough seas up to 13 ft. Chance of rain
showers, areas fog, isolated thunderstorms. Visibility 1 to 3
nm.

Outlook Thursday through Sunday ... Moderate to high
Thursday: winds less than 25 kt. Rough seas up to 10 ft. Slight
chance of rain showers.

Thursday night: winds less than 25 kt. Areas of rough seas.

Friday through Friday night: winds less than 25 kt. Seas up to
5 ft. Chance of rain showers.

Saturday through Sunday: winds less than 25 kt. Seas up to
5 ft.

Equipment
The NOAA weather radio transmitter serving providence is out of
service due to phone line problems. The phone company has
prioritized the issues and is working to get the weather
broadcast back on the air as soon as possible. The transmitter
serving hyannis is back in service.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory from 4 am to 9 pm edt Wednesday for
anz231-232.

Small craft advisory from 7 am to 9 pm edt Wednesday for
anz233-234.

Small craft advisory from 1 pm to 8 pm edt Wednesday for
anz230.

Small craft advisory from 9 am to 6 pm edt Wednesday for
anz236.

Small craft advisory from 4 am Wednesday to 9 am edt Thursday
for anz235-237-254.

Small craft advisory from 8 am Wednesday to 9 am edt Thursday
for anz250-251.

Small craft advisory from 3 am Wednesday to 9 am edt Thursday
for anz255-256.

Synopsis... Nocera dunten
near term... Dunten thompson
short term... Dunten
long term... Nocera
aviation... Nocera dunten thompson
marine... Nocera dunten
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
LDLC3 - New London Ledge CT - Ledge Light Weather 10 mi34 min SE 14 G 16 48°F 43°F
NLNC3 - 8461490 - New London, CT 11 mi41 min S 4.1 G 8.9 51°F 45°F1025.2 hPa
MTKN6 - 8510560 - Montauk, NY 20 mi41 min 49°F 46°F1025.3 hPa
QPTR1 - 8454049 - Quonset Point, RI 31 mi47 min SSW 8 G 9.9 48°F 48°F1026.1 hPa
NWPR1 - 8452660 - Newport, RI 32 mi41 min SSE 8.9 G 13 50°F 47°F1025.7 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 36 mi41 min SW 4.1 G 5.1 49°F 1025.9 hPa
NAXR1 - Narragansett Bay Reserve, RI 36 mi104 min SW 4.1 51°F 1003 hPa42°F
CPTR1 - 8452944 - Conimicut Light, RI 39 mi41 min S 11 G 13 49°F 49°F1025.7 hPa
PVDR1 41 mi41 min SSE 12 G 13 52°F 1025.8 hPa45°F
FOXR1 - 8454000 - Providence, RI 42 mi41 min S 9.9 G 13 53°F 50°F1025.2 hPa
44039 - Central Long Island Sound 43 mi44 min SE 5.8 G 5.8 49°F
FRXM3 45 mi41 min 53°F 41°F
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 45 mi39 min SE 12 G 14 48°F 45°F2 ft1025.2 hPa (-1.1)45°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 46 mi41 min SSE 8.9 G 15 53°F 1025.8 hPa
FRVM3 - 8447386 - Fall River, MA 46 mi41 min 53°F 49°F1026.3 hPa
44097 - Block Island, RI (154) 48 mi76 min 45°F2 ft

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
-12
PM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
-12
PM
11
AM
-12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
S9
G12
S5
S6
S4
SW4
SE1
S3
N4
N2
N4
N5
N4
N2
--
S6
S6
G10
S11
G16
S11
G14
S11
G14
S8
G12
S3
1 day
ago
SW6
G9
W3
G6
W2
--
--
N2
N1
N6
N7
N5
N5
G8
N6
N7
N3
G7
N4
S6
SW8
G11
S8
G11
S9
S9
G12
S8
G11
SW7
G10
S8
G12
2 days
ago
N3
G7
NW3
NW3
G7
NW3
N1
G7
N5
G8
N5
N2
N1
N2
N3
NW1
N4
N2
NE2
N4
G8
N3
G9
N3
G12
N7
G14
W3
G7
SW10
G17
SW11
G15
SW9
G16
SW7
G13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Westerly, Westerly State Airport, RI5 mi36 minSE 710.00 miFair50°F44°F80%1025.8 hPa
Groton / New London, Groton / New London Airport, CT8 mi33 minESE 910.00 miMostly Cloudy49°F44°F83%1025.1 hPa
Montauk, Montauk Airport, NY17 mi35 minSE 7 mi52°F43°F72%1025.8 hPa
Block Island State Airport, RI19 mi33 minSSE 1110.00 miMostly Cloudy50°F41°F71%1026.3 hPa

Wind History from WST (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 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmS6S7S9S10S12S13
G17
S11S10S7SE7SE7
1 day agoW8W6W4CalmCalmCalmCalmN3CalmNE3NE3NE3NE5NE6SE8SE10SE10S11S10S9S8S9S4Calm
2 days agoNW3CalmW4NW6N7N4CalmCalmCalmCalmCalmN56NW9
G14
5W6SW9SW11SW8SW11
G19
SW10SW8SW8SW4

Tide / Current Tables for Stonington, Fishers Island Sound, Connecticut
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Stonington
Click for Map
Tue -- 03:11 AM EDT     Moonset
Tue -- 04:48 AM EDT     3.01 feet High Tide
Tue -- 05:54 AM EDT     Sunrise
Tue -- 11:17 AM EDT     0.13 feet Low Tide
Tue -- 01:53 PM EDT     Moonrise
Tue -- 05:32 PM EDT     2.80 feet High Tide
Tue -- 07:37 PM EDT     Sunset
Tue -- 11:42 PM EDT     0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.81.422.62.932.82.31.81.20.50.20.30.71.41.92.42.82.82.52.11.60.90.4

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
Tue -- 01:17 AM EDT     0.01 knots Slack
Tue -- 03:12 AM EDT     Moonset
Tue -- 04:07 AM EDT     2.58 knots Max Flood
Tue -- 05:55 AM EDT     Sunrise
Tue -- 07:27 AM EDT     -0.00 knots Slack
Tue -- 10:32 AM EDT     -3.09 knots Max Ebb
Tue -- 01:54 PM EDT     0.00 knots Slack
Tue -- 01:54 PM EDT     Moonrise
Tue -- 04:46 PM EDT     2.70 knots Max Flood
Tue -- 07:38 PM EDT     Sunset
Tue -- 08:08 PM EDT     -0.00 knots Slack
Tue -- 11:06 PM EDT     -3.00 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.6-0.412.12.62.41.70.6-0.8-2.1-3-3-2.3-1.20.21.62.52.72.31.50.2-1.3-2.5-3

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (20,4,5,8)
      (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.