Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Hartford, 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 6:30AMSunset 5:37PM Saturday February 24, 2018 5:14 AM EST (10:14 UTC) Moonrise 12:55PMMoonset 2:52AM 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 402 Am Est Sat Feb 24 2018
.small craft advisory in effect from late tonight through Sunday afternoon...
Today..W winds 10 to 15 kt with gusts to 20 kt early, then nw winds 5 to 10 kt. Seas 1 to 2 ft early, then 1 ft or less. Slight chance of rain late this morning. Chance of rain early this afternoon, then rain likely late.
Tonight..NE winds 5 to 10 kt, becoming E 15 to 20 kt with gusts up to 30 kt after midnight. Seas 1 ft or less, then 2 to 3 ft after midnight. Rain. Vsby 1 to 3 nm after midnight.
Sun..E winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Rain. Vsby 1 to 3 nm.
Sun night..NW winds around 5 kt. Seas 1 to 2 ft. Chance of rain in the evening.
Mon..NW winds 5 to 10 kt. Seas 1 ft or less.
Mon night..NW winds 5 to 10 kt. Seas 1 ft or less.
Tue..NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 ft or less.
Tue night..W winds 5 to 10 kt. Seas 1 ft or less.
Wed..W winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Wed night..E winds 5 to 10 kt. Seas 1 ft or less.
ANZ300 402 Am Est Sat Feb 24 2018
Synopsis for the long island waters and new york harbor.. Weak low pressure tracks across the region late today into this evening. A warm front moves towards the region tonight, with a frontal system affecting the region Sunday. High pressure builds from the midwest Sunday night and remains in control through the middle of next week. A low pressure system may approach for the end of the week.

7 Day Forecast for Marine Location Near Hartford, CT
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location: 41.77, -72.67     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 240844
afdbox
area forecast discussion
national weather service taunton ma
344 am est Sat feb 24 2018

Synopsis
Unseasonably mild today with a period of showers possible south
of the mass pike late today and early this evening. A frontal
system will bring more precipitation late tonight and Sunday
with rain mixed with sleet at times in the coastal plain and
snow sleet and freezing changing to rain in the interior. Near-
seasonable, quiet and dry for the first half of next week,
attention turns towards late week and an anticipated stormy
pattern.

Near term through today
Low clouds are beginning to erode across parts of sne and this
trend will continue early this morning. High pressure builds
to the north today with low level NW flow. Morning sunshine will
give way to increasing clouds this afternoon in developing warm
advection north of advancing warm front. In fact, much of the
guidance is showing a band of deeper moisture moving in from the
sw across areas south of the mass pike late today and early
evening with some low level isentropic lift. This leads to a
an area of showers approaching from the SW late today. Some
uncertainty with how far north and east these showers get but
confidence is increasing that northern extent of showers will
make into portions of ct ri and SE ma late today and early
evening.

Unseasonably mild day, especially in the coastal plain where
highs reach mid upper 50s, with cooler 40s over NW ma.

Short term tonight through 6 pm Sunday
*** mixed precipitation event for interior late tonight and
Sunday with some snow and ice accumulations ***
a few showers likely impacting south coast early evening,
otherwise dry weather through midnight before main area of
overrunning precip ahead of the warm front begins to overspread
the region from the SW to NE late tonight into Sunday.

Ptype will be biggest challenge with this event. Initially, the
column is warm but all the guidance is indicating a good cold
air damming signature developing overnight into Sunday as high
pres builds over the maritimes. In fact, notable cooling in the
925-950 mb layer 06-15z with temps dropping to -2 to -4c before
warmer air moves in from the south. Warming temps above this
layer will set up a sleet and freezing rain scenario in the
interior where low level cold air will be difficult to dislodge
given warm front remaining to the south and a sfc wave tracking
along the boundary to lock in the cold air near the surface.

Some snow is also likely late tonight and early Sunday, north
of the pike and especially near nh border where cold air just
deep enough as precip moves in. In the coastal plain, mainly
rain is expected, but given cold air below 850 mb, some sleet
will likely mix in with the rain late tonight and Sunday morning
even along the south coast.

Expect 1-3 inches snow sleet accum in the interior north of the
mass pike with highest amounts near nh border. If warmer air
aloft is delayed a few hours it is possible a few locations
could approach 4-5 inches but this is a low probability. We are
concerned with several hours of freezing rain and icy
conditions across portions of the interior during Sunday,
especially over the berkshires, worcester hills and portions of
the ct valley. Ice accretion up to one tenth of an inch is
possible with up to 0.25" over the berkshires. Expect temps to
gradually rise above freezing Sun afternoon in the interior as
precip intensity diminishes.

Winter weather advisories will be issued for all of central and
western ma and northern ct. Some freezing rain is possible in
nw ri and interior NE ma but confidence not yet high enough for
an advisory in this area. Across NE ma may be dealing with more
of a snow sleet to rain scenario.

Long term Sunday night through Friday
* highlights...

- quiet, dry, near-seasonable early week period
- stormy pattern emerging late week for the beginning of march
* overview...

blocky N atlantic pattern, associated +3 standard deviation h5 high
retrograding W into SE canada, parent 1040+ surface high, pressing
the thermal wind axis S through which N S stream impulses merge, dug
through a prevailing W CONUS h5 trof before ejecting and stretching
e. Energy piling up, cutting off for a time given the block, an area
of favorable storm development emerges off the SE canadian coast,
evolving S W towards the NE CONUS per retrograding high, E ejecting
energy. Airmass juxtaposition key as to outcomes towards the end of
the week after a quiet start. Only confidence is persistence of ne
winds of significant duration during high astro-tides, concern with
respect to coastal flooding. Lower confidence otherwise, consensus
forecast guidance heavily weighted with ensemble means. Hit targets
of opportunity below.

* discussion...

Thursday into the weekend...

while considerable ensemble member deterministic guidance spread
there's cohesive signal of a great lakes warm occlusion transferring
energy offshore beneath a more favorable region of storm development
evolving towards the NE conus. Occluded front transitioning to an
inverted trof, energy pinwheeling round a closed, stacking low well
offshore. Questions surround frontal boundary magnitude buffeting
the pressing N high, how far N E outcomes slide into new england.

Ncep noting poor run-to-run continuity with ejecting waves, ec, even
the 24.0z, worse than GFS which appears to be locking in. Warm core
low, absent arctic air, anticipate precip-type issues, rain snow,
lean to occluded front inverted trof hanging up into the NE conus
as energy transfers, low rolls up offshore. Only confidence is the
persistence of NE winds during high astro-tides, concern of coastal
flooding. Only chance pops given spread.

Aviation 08z Saturday through Wednesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Sunday ... Moderate confidence.

Through 12z... MVFR ifr conditions will gradually improve toVFR
from north to south through 12z, but ifr persisting over the
islands.

Today... Stratus and patchy fog may linger for a few hours past
12z along immediate south coast and especially the islands.

OtherwiseVFR. A brief period of showers may move across
portions of N ct and ri and SE ma late in the day and early
evening.

Tonight...VFR in the evening, lowering to MVFR from west to east
late. Rain, sleet and freezing rain developing from SW to ne
well after midnight with snow sleet across northern ma. Mainly
rain mixed with sleet coastal plain.

Sunday... Widespread ifr lifr developing. Rain, mixed with sleet
at times in the morning in the coastal plain. Snow, sleet and
freezing rain changing to rain interior.

Kbos terminal... High confidence in trends. Conditions improving
toVFR early this morning, but exact timing may be off a few
hours.

Kbdl terminal... High confidence in trends. Conditions improving
toVFR early this morning, but exact timing may be off a few
hours.

Outlook Sunday night through Wednesday ... Moderate confidence.

Sunday night: mainlyVFR, with local ifr possible. Slight
chance ra.

Monday through Wednesday:VFR.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Sunday ... Moderate confidence.

Today... Diminishing winds becoming northerly late today. Seas
below sca.

Tonight and Sunday... Increasing easterly winds late tonight and
especially Sunday as low level jet moves across the waters.

Given cold air above the boundary layer, mixing will likely be
sufficient for a period of gale force gusts, especially over
the south coastal waters during sun. Otherwise, expect sca
conditions with gusts to 25-30 kt. Gale watches issued where
highest confidence of gales.

Outlook Sunday night through Wednesday ...

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

Slight chance of rain.

Monday: winds less than 25 kt. Seas up to 5 ft.

Monday night: winds less than 25 kt. Areas of seas approaching
5 ft.

Tuesday: winds less than 25 kt. Seas locally approaching 5 ft.

Tuesday night: winds less than 25 kt.

Wednesday: winds less than 25 kt. Seas up to 5 ft.

Box watches warnings advisories
Ct... Winter weather advisory from 1 am to 1 pm est Sunday for
ctz002>004.

Ma... Winter weather advisory from 1 am to 1 pm est Sunday for
maz002>004-008>012-026.

Ri... None.

Marine... Small craft advisory from 3 am to 4 pm est Sunday for
anz232>234.

Small craft advisory from 6 am to 5 pm est Sunday for anz230.

Small craft advisory from 3 am to 7 pm est Sunday for anz231.

Small craft advisory from 6 am to 1 pm est Sunday for anz236.

Gale watch from Sunday morning through Sunday afternoon for
anz235-237.

Small craft advisory from 6 am to 7 pm est Sunday for anz250-
251.

Gale watch from Sunday morning through Sunday afternoon for
anz254>256.

Synopsis... Kjc sipprell
near term... Kjc
short term... Kjc
long term... Sipprell
aviation... Kjc sipprell
marine... Kjc sipprell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWHC3 - 8465705 - New Haven, CT 36 mi44 min SW 5.1 G 5.1 38°F 39°F1019.6 hPa
NLNC3 - 8461490 - New London, CT 42 mi44 min Calm G 1.9 40°F 39°F1018.8 hPa
44039 - Central Long Island Sound 44 mi44 min W 9.7 G 12 39°F 1 ft
LDLC3 - New London Ledge CT - Ledge Light Weather 45 mi34 min W 13 G 17 39°F 1022.9 hPa38°F
BRHC3 - 8467150 - Bridgeport, CT 49 mi50 min WSW 4.1 G 6 40°F 37°F1019.1 hPa

Wind History for New Haven, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hartford, Hartford-Brainard Airport, CT3 mi21 minN 03.00 miFog/Mist36°F36°F100%1019.3 hPa
Windsor Locks, Bradley International Airport, CT12 mi23 minSSE 47.00 miMostly Cloudy38°F37°F100%1019.3 hPa
Meriden, Meriden Markham Municipal Airport, CT20 mi21 minN 01.50 miFog/Mist36°F36°F100%1019.5 hPa

Wind History from HFD (wind in knots)
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Last 24hrNE5N3N5NE54SE6SE6CalmS5S4S4SW3S5S4S3S4CalmS5S7S5S5S6SE3Calm
1 day agoN8N7N6N13N12N11N10N10N13
G19
N10N9N8N7N3CalmN4N7N7N7N4N4N7NE5Calm
2 days agoS6S6S6S8S9S9
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NW9NW7NW10NW10N9N10N10N11NE7

Tide / Current Tables for Hartford, Connecticut River, Connecticut
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Hartford
Click for MapNote: Tidal information only applies during low river stages.

Sat -- 01:52 AM EST     Moonset
Sat -- 04:33 AM EST     0.11 feet Low Tide
Sat -- 06:33 AM EST     Sunrise
Sat -- 09:16 AM EST     2.06 feet High Tide
Sat -- 11:55 AM EST     Moonrise
Sat -- 05:32 PM EST     -0.07 feet Low Tide
Sat -- 05:34 PM EST     Sunset
Sat -- 09:47 PM EST     1.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.70.50.30.10.20.71.41.8221.91.61.30.90.60.2-0-00.51.11.51.61.5

Tide / Current Tables for Rocky Hill, Connecticut River, Connecticut
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Rocky Hill
Click for MapNote: Tidal information only applies during low river stages.

Sat -- 01:51 AM EST     Moonset
Sat -- 03:17 AM EST     0.09 feet Low Tide
Sat -- 06:33 AM EST     Sunrise
Sat -- 08:16 AM EST     2.01 feet High Tide
Sat -- 11:55 AM EST     Moonrise
Sat -- 04:16 PM EST     -0.06 feet Low Tide
Sat -- 05:34 PM EST     Sunset
Sat -- 08:47 PM EST     1.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.40.20.10.20.71.41.8221.81.51.20.90.50.1-0.10.10.61.11.41.51.41.2

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Boston, MA (5,6,7,8)
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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.