Friday, February22, 2019 L-36.com


There have been some updates to address some problems that a few users were having. You might want to refresh your setup. Refresh

Marine Weather and Tides
Quonochontaug, RI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:30AMSunset 5:30PM Friday February 22, 2019 4:12 AM EST (09:12 UTC) Moonrise 10:18PMMoonset 9:34AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 408 Am Est Fri Feb 22 2019
.small craft advisory in effect until 7 am est this morning...
Today..NW winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 25 kt. Seas 3 to 4 ft.
Tonight..N winds 5 to 10 kt. Seas around 2 ft.
Sat..NE winds around 5 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less.
Sat night..SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas around 2 ft, building to 4 ft after midnight. A chance of rain in the evening, then rain after midnight.
Sun..SE winds 15 to 20 kt, becoming sw 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas around 6 ft. Rain.
Sun night..W winds 20 to 25 kt with gusts up to 35 kt, increasing to 25 to 30 kt with gusts up to 45 kt after midnight. Seas 8 to 9 ft.
Mon..W winds 25 to 30 kt with gusts up to 45 kt. Seas around 9 ft.
Mon night..W winds 25 to 30 kt with gusts up to 45 kt, becoming nw 20 to 25 kt with gusts up to 35 kt after midnight. Seas 6 to 7 ft. A chance of light freezing spray after midnight.
Tue..NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. A chance of light freezing spray in the morning.
Tue night..NW winds 10 to 15 kt with gusts up to 25 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 408 Am Est Fri Feb 22 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres builds over the waters through Sat. A warm front will approach the waters on Sun, bringing widespread rain and strong s-se winds across the waters. A cold front passes by Mon. Another high pres approaches from the W Tue. 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 Quonochontaug, RI
   Hourly   EDIT   Help
location: 41.19, -71.58     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbox 220719
afdbox
area forecast discussion
national weather service boston norton ma
219 am est Fri feb 22 2019

Synopsis
High pressure over the great lakes builds over new england
through tonight, then moves to our east Saturday. This will
bring a period of drier air and seasonably cool temperatures.

Wintry mess for Saturday night into Sunday. Windy Sunday night
through Tuesday, especially Monday when wind headlines are
possible. Colder than average Wednesday onward while monitoring
for any storm activity.

Near term through today
High pressure builds over southern new england today. Dry
weather will continue, with decreasing clouds through the day.

Gusty W to NW winds will diminish later today. Near normal high
temperatures.

Short term tonight through 6 pm Saturday
High pressure moves over southern new england tonight, then
offshore Saturday. Light winds will lead to strong radiational
cooling tonight, resulting in below normal temperatures. List s
to SW winds develop Saturday as this high pressure moves
offshore. This should let MAX temperatures recover to near
normal levels. Still thinking dry weather persists through
Saturday, other than some increasing clouds during the day.

Long term Saturday night through Thursday
* highlights ...

- another round of wintry weather early Saturday night into
Sunday
- very windy Sunday night through Tuesday, potentially damaging
Monday
- potential for some wet weather mid week
* overview ...

the big picture pattern of deep western trough and subtropical
ridge over the bahamas finally breaks down with the onset of our
messy winter weather system this weekend. Beyond Sunday we'll
see a mostly zonal flow pattern dominating much of the conus
with periodic weak shortwaves moving through. The strongest
wave best chance of us seeing precipitation comes on or around
Wednesday but confidence is low at this time range.

Saturday night and Sunday...

deja vu with this next kitchen sink weather system and a very
similar setup to what we've seen many times this winter, most
recently this last week. By late Saturday a ~992 mb low sits
over the midwest, ejecting northeast toward the great lakes
while the attendant mid level shortwave begins to phase with
another shortwave moving over the dakotas. Again we see the
parent low moving well to our northwest allowing warm air aloft
to be pulled north ahead of the cold front changing any brief
snow at the onset quickly to sleet and freezing rain. Lots of
moisture with this system (seeing pwats approach 1.25") and
plenty of lift via isentropic ascent over the cold dome
initially and good low level speed convergence via 45-55 kt llj.

The big question remains just how long northern drainage flow
from the high situated to our northeast can keep surface
temperatures below freezing before warm southerly flow turns
everything to rain. Now getting into range of higher res models
which indicate potential for a prolonged freezing rain event,
especially for the high terrain of interior ma ct and the tough
to scour out valleys. Current thinking is a coating to less than
an inch of snow with up to a quarter inch of ice to follow.

Fortunately road traffic will be low given it falls on a Sunday
morning, limiting impact compared to a workday. Temps warm above
freezing for all rain by mid-late morning. Latest model trends
have been a bit faster with the exit of the system and more
quickly bringing the dry slot overhead; trended drier late
Sunday but keeping some rain chances through the day. Persistent
southerly flow will bring above average temperatures in the mid
to upper 40s.

Sunday night through Tuesday...

the takeaway for this forecast period is going to be the very
gusty potentially damaging winds peaking on Monday. A cold front
drops through Sunday night ushering in a drier and colder
airmass to start the week with highs dropping 5-10f each day,
into the low 40s Monday and 30s on Tuesday. We'll be sandwiched
between a strengthening low exiting to our northeast and
incoming high pressure under a very tight surface pressure
gradient leading to sustained winds of 20-30 kts on Monday.

Strong CAA also promotes some very efficient mixing of the bl.

Model soundings indicate mixing up to near 700 mb, tapping into
a strong LLJ with potential for wind gusts at the surface
approaching 45-50 kts, highest along the coast and over higher
terrain. Winds pick up Sunday night, peak Monday afternoon, and
ramp down through Tuesday morning. A high wind warning may be
merited.

Wednesday and Thursday...

zonal mid level flow remains through the period but models
indicate potential for our next shortwave to dip south from
canada around Wednesday. Plenty of disagreement on how amplified
it becomes and whether it can tap into enough moisture to bring
appreciable wet weather or not. Holding on to chance pops mid
week but confidence is low for now.

Aviation 07z Friday through Tuesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday ... High confidence.

Vfr. Gusty W to NW winds diminish tonight into Saturday.

Kbos terminal... High confidence in taf.

Kbdl terminal... High confidence in taf.

Outlook Saturday night through Tuesday ...

Saturday night: mainlyVFR, with local ifr possible. Breezy.

Ra, fzra, chance sn, chance pl.

Sunday: MVFR ifr conditions possible. Windy with gusts up to
35 kt. Ra, fzra.

Sunday night:VFR. Windy with gusts up to 35 kt. Chance sn.

Monday through Monday night:VFR. Strong winds with gusts up to
45 kt.

Tuesday:VFR. Windy with local gusts up to 30 kt.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday ... High confidence.

High pressure builds over the coastal waters through Saturday.

Gusty west to northwest winds and seas diminish later today.

Outlook Saturday night through Tuesday ...

Saturday: winds less than 25 kt.

Saturday night: winds less than 25 kt. Seas locally approaching
5 ft. Rain, freezing rain, chance of snow.

Sunday: moderate risk for small craft advisory winds with gusts
up to 30 kt. Rough seas up to 9 ft. Rain.

Sunday night: low risk for gale force winds with gusts up to
40 kt. Rough seas up to 14 ft.

Monday: low risk for storm force winds with gusts up to 50 kt.

Rough seas up to 15 ft.

Monday night: moderate risk for gale force winds with gusts up
to 45 kt. Rough seas up to 14 ft.

Tuesday: moderate risk for small craft advisory winds with
gusts up to 30 kt. Areas of rough seas.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory until noon est today for anz231-232-
254>256.

Small craft advisory until 7 am est this morning for
anz233>235-237.

Small craft advisory until 10 am est this morning for anz250.

Small craft advisory until 9 am est this morning for anz251.

Synopsis... Belk bw
near term... Belk
short term... Belk
long term... Bw
aviation... Belk bw
marine... Belk bw


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
MTKN6 - 8510560 - Montauk, NY 22 mi54 min 39°F 38°F1022 hPa
NWPR1 - 8452660 - Newport, RI 26 mi60 min WSW 7 G 8 38°F 37°F1020.6 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 28 mi62 min W 11 G 12 39°F 1021.2 hPa27°F
44097 - Block Island, RI (154) 28 mi42 min 42°F6 ft
NLNC3 - 8461490 - New London, CT 29 mi54 min W 1.9 G 6 37°F 39°F1021.7 hPa
QPTR1 - 8454049 - Quonset Point, RI 29 mi60 min WSW 6 G 7 38°F 38°F1020.8 hPa
BUZM3 - Buzzards Bay, MA 32 mi72 min W 15 G 16 39°F 1021 hPa (+2.7)
NAXR1 - Narragansett Bay Reserve, RI 33 mi87 min WSW 2.9 37°F 1020 hPa28°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 33 mi60 min W 4.1 G 6 37°F 1020.7 hPa
CPTR1 - 8452944 - Conimicut Light, RI 38 mi54 min WSW 8 G 8.9 37°F 38°F1020.7 hPa
FRXM3 41 mi54 min 39°F 28°F
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 42 mi82 min WNW 12 G 14 41°F 40°F5 ft1022 hPa (+2.3)29°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 42 mi54 min W 9.9 G 11 39°F 1020.5 hPa
FRVM3 - 8447386 - Fall River, MA 42 mi54 min 38°F 42°F
PVDR1 42 mi54 min W 5.1 G 6 38°F 1020.6 hPa25°F
FOXR1 - 8454000 - Providence, RI 44 mi60 min W 4.1 G 5.1 38°F 36°F1020.1 hPa

Wind History for Newport, RI
(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
-12
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
Last
24hr
SE11
G19
E2
G5
N10
N11
G16
N12
G17
N11
G15
NW5
G8
NW3
G6
NW6
NW10
G16
NW10
G16
W11
G14
W9
G12
W6
G9
NW5
G9
NW6
G9
NW9
NW5
W8
W8
W9
W6
SW6
1 day
ago
NW4
G8
W5
G8
NW4
N4
N2
G5
N3
NW3
NW2
N2
SW2
W2
S5
SW7
G11
S2
G6
S5
S4
G7
SE7
SE5
G11
E8
G12
E8
SE9
G12
SE9
G14
SE6
G9
SE12
G18
2 days
ago
NW14
G20
N12
NW11
G16
NW8
G15
NW9
G13
N11
G16
N8
G11
N8
NW6
N7
G10
NW3
G8
NW6
G13
W11
G14
NW7
G14
NW8
G15
NW8
G15
W10
G13
NW10
G13
NW10
G14
N7
G11
N8
G11
NW11
G14
NW9
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Block Island State Airport, RI1 mi76 minW 810.00 miFair39°F27°F62%0 hPa
Westerly, Westerly State Airport, RI16 mi79 minWSW 310.00 miA Few Clouds40°F25°F55%1021 hPa
Montauk, Montauk Airport, NY20 mi78 minW 5 mi39°F27°F62%1021.7 hPa

Wind History from BID (wind in knots)
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
4
AM
Last 24hrSE13
G21
SW8N9N9NW6W9
G14
W10
G16
W14
G20
W13
G19
W13
G19
W11W11
G16
W10--W9NW5NW7NW6NW7
G14
NW4NW9--W8W10
1 day agoN5N5N6N5N4NE4N3NE43S4SW5SW8S4SE5SE9SE8SE11SE13SE16
G20
SE14E15
G19
E16SE17
G23
SE12
G22
2 days agoNW11
G20
NW10
G20
NW10
G18
NW11
G18
NW11
G16
NW10
G15
NW9
G15
NW10NW10
G18
W8NW10NW10
G15
NW10
G14
NW9NW7
G14
NW8
G14
NW8
G17
NW11
G16
NW10N11NW11N8N4NW3

Tide / Current Tables for Block Island (Great Salt Pond), Rhode Island
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Block Island (Great Salt Pond)
Click for Map
Fri -- 03:20 AM EST     -0.67 feet Low Tide
Fri -- 06:31 AM EST     Sunrise
Fri -- 08:33 AM EST     Moonset
Fri -- 09:47 AM EST     3.17 feet High Tide
Fri -- 03:40 PM EST     -0.55 feet Low Tide
Fri -- 05:28 PM EST     Sunset
Fri -- 09:18 PM EST     Moonrise
Fri -- 10:12 PM EST     3.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
9
pm
10
pm
11
pm
1.50.5-0.3-0.6-0.6-0.20.51.42.333.22.71.90.90-0.5-0.5-0.20.31.122.83.23

Tide / Current Tables for Moonstone Beach, Rhode Island
   EDIT      (on/off)   Help   One Week of Data
Moonstone Beach
Click for Map
Fri -- 03:44 AM EST     -0.89 feet Low Tide
Fri -- 06:31 AM EST     Sunrise
Fri -- 08:33 AM EST     Moonset
Fri -- 09:56 AM EST     3.47 feet High Tide
Fri -- 04:05 PM EST     -0.74 feet Low Tide
Fri -- 05:28 PM EST     Sunset
Fri -- 09:18 PM EST     Moonrise
Fri -- 10:20 PM EST     3.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
9
pm
10
pm
11
pm
1.80.7-0.2-0.8-0.9-0.50.21.22.33.23.53.12.21.10.2-0.5-0.7-0.6-00.922.93.53.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of Mid-Atlantic    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 Boston, MA (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.