Thursday, September19, 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
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:30AMSunset 6:51PM Thursday September 19, 2019 3:55 PM EDT (19:55 UTC) Moonrise 9:54PMMoonset 11:34AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 332 Pm Edt Thu Sep 19 2019
Tonight..SE winds around 5 kt, becoming W after midnight. Seas around 4 ft.
Fri..W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 4 ft.
Fri night..W winds 5 to 10 kt. Seas 3 to 4 ft.
Sat..NW winds around 5 kt, becoming sw in the afternoon. Seas around 3 ft.
Sat night..SW winds around 5 kt. Seas around 2 ft.
Sun..S winds 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Sun night..SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 4 to 5 ft.
Mon..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 5 ft. A chance of showers in the afternoon.
Mon night..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 5 ft. A chance of showers.
Tue..NW winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers in the morning.
Tue night..N winds 5 to 10 kt. Seas around 4 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 332 Pm Edt Thu Sep 19 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres builds slowly builds S of the waters Fri through Sun. Meanwhile E swell from distant hurricane humberto will impact the waters during the next 24 to 48 hours. 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 191942
afdbox
area forecast discussion
national weather service boston norton ma
342 pm edt Thu sep 19 2019

Synopsis
High pressure remains in control through the weekend with
summerlike temperatures returning. A cold front brings the
next chance of showers early next week. More seasonable
temperatures follow for the rest of the week with a risk of
showers on Thursday as another cold front approaches. Distant
hurricane humberto will bring high surf and dangerous rip
currents through Friday.

Near term until 6 am Friday morning
Another cool night on tap with high pres providing clear skies
and light winds although some high clouds may spill into the
region overnight. Not quite as cold as last night but expect
some of the colder spots in western ma and interior eastern ma
to drop into the mid upper 30s with patchy frost possible. No
frost headlines as any frost will be very patchy. Lows in the
40s elsewhere.

Short term 6 am Friday morning through Friday night
High pres remains in control. A weak shortwave riding over the
ridge will bring some mid high clouds during Fri but still
mostly sunny. After a chilly start, a significant warmup is
expected during the afternoon. 925 mb temps 18-19c will support
highs reaching the mid upper 70s. Mainly clear skies Fri night
but not as cool as airmass moderates. Lows will be mainly in the
50s.

Swell from humberto will also continue the threat for rough
surf and dangerous rip currents. With warming conditions Friday,
will continue the high surf advisory through much of Friday
along ocean-exposed portions of the coast.

Long term Saturday through Thursday
Highlights...

* dry weather, mild days and seasonable nights for the weekend.

Elevated threat for lingering rip currents Saturday.

* cold front brings at least showers to the area later Monday into
Tuesday.

* brief dry weather Wednesday, turning unsettled late next week.

Details...

Saturday - Sunday...

still anticipating a great weekend weather-wise, as an amplified
ridge aloft (approx. 1-2 standard deviations above normal
geopotential height anomalies per gefs) builds and crests over the
region. Abundant sunshine, dry weather and 850 mb temperatures
around the mid-teens celsius support above-normal temperatures for
late september, with good diurnal temperature ranges. Of the two
days, Sunday projects to be the warmest areawide given warmer 850 mb
temperatures and more of a southerly gradient component to the flow
affording less inland penetration of sea breezes near the coast.

Looking for highs in the mid-upper 70s to mid 80s on Saturday
(coolest along the coast CAPE and islands), with highs well into the
80s on Sunday. Lows mainly upper 50s to low-mid 60s.

With potential for several to be heading to the beaches on Saturday,
still will be some concern for rip currents lingering from
humberto's passage. Seems likely a rip current statement would be
needed. High surf issues don't look as likely, with wave heights
generally under 5 feet and a lowering trend to waves.

Monday - Tuesday...

cold front continues to be a focal point for more active weather in
this period. Past couple GFS deterministic model runs have slowed
the front's eastward progression down by a few hours, though it
still is on the faster side compared to the gem and ecmwf. So still
some timing issues to iron out, but some loose consensus that Monday
late-afternoon Monday through overnight early Tuesday as an
approximate frontal passage. ECMWF is still slower than that and
would lead to a continuation of wet weather on the south coast, cape
and islands through a larger part of Tuesday.

Dynamics look favorable and low- and mid-level wind fields are
pretty robust Monday; however guidance lapse rates in mid-levels are
weak, and it would take greater heating instability to trigger
thunderstorms at this point. Will continue to leave as showers for
now but the thunder potential would be greater if more instability
is realized then currently progged. Pwats climb to about 1.4-1.7"
supporting at least a brief downpour threat. Regardless, this
continues to be the next bonafide chance at rains.

Midweek:
larger disagreement in model solutions then becomes apparent for
Wednesday into Friday. Some of this disagreement comes from models'
varied handling of shortwave energy digging into the intermountain
west southern rockies Tuesday. International guidance keeps this
disturbance closed off and detached from the larger westerlies,
which in turn keeps our area dry with seasonable temperatures. On
the other hand the GFS shows less amplitude to this shortwave trough
aloft and would verbatim indicate a brief spell of quiet weather
early Wednesday before isentropically forced showers enter the
picture for Wednesday night.

While the gem and the GFS bring a strong cold frontal passage
through on Thursday with seasonal early fall-like weather for Friday
- the ECMWF washes the front out Thursday and instead amplifies an
upper-level ridge over the east coast, which would bring above
normal temperatures back into southern new england by late week.

Will take a blended guidance approach to the forecast for this
period given the larger variability in model solutions.

Aviation 19z Thursday through Tuesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday night ... High confidence.

Vfr through the period. Diminishing NE wind this afternoon
cape islands.

Kbos terminal... High confidence in taf.

Kbdl terminal... High confidence in taf.

Outlook Saturday through Tuesday ...

Saturday through Sunday:VFR.

Sunday night:VFR. Breezy.

Monday: mainlyVFR, with areas MVFR possible. Breezy. Chance
shra.

Monday night: mainly MVFR, with areasVFR possible. Breezy.

Chance shra.

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

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday night ... High confidence.

Light winds will continue. However, E swell from hurricane
humberto will result in 5-8 ft seas over the outer waters,
gradually subsiding Fri night.

Outlook Saturday through Tuesday ... Moderate confidence.

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

Saturday night through Sunday: winds less than 25 kt.

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

Monday: winds less than 25 kt. Seas up to 5 ft. Slight chance
of rain showers.

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

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

Chance of rain showers.

Box watches warnings advisories
Ct... None.

Ma... High surf advisory until 6 pm edt Friday for maz020-022>024.

High surf advisory from midnight tonight to 6 pm edt Friday
for maz007-019.

Ri... High surf advisory until 6 pm edt Friday for riz006>008.

Marine... Small craft advisory until 8 am edt Saturday for anz250-
254>256.

Small craft advisory from 6 am Friday to 8 am edt Saturday for
anz251.

Synopsis... Kjc loconto
near term... Kjc
short term... Kjc
long term... Loconto
aviation... Kjc loconto
marine... Kjc loconto


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 mi61 min 60°F 68°F1026.5 hPa
NWPR1 - 8452660 - Newport, RI 26 mi61 min NNW 5.1 G 7 65°F 61°F1025.9 hPa
44097 - Block Island, RI (154) 28 mi25 min 68°F5 ft
LDLC3 - New London Ledge CT - Ledge Light Weather 28 mi25 min SW 8.9 G 9.9 63°F 1025.4 hPa48°F
NLNC3 - 8461490 - New London, CT 29 mi55 min N 1.9 G 5.1
QPTR1 - 8454049 - Quonset Point, RI 29 mi61 min NE 4.1 G 5.1 65°F 67°F1026 hPa
BUZM3 - Buzzards Bay, MA 32 mi55 min NE 12 G 13 61°F 1026.1 hPa (-1.2)
PRUR1 32 mi55 min 66°F 44°F
NAXR1 - Narragansett Bay Reserve, RI 33 mi70 min N 4.1 68°F 1026 hPa45°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 33 mi55 min N 2.9 G 5.1 67°F 1026.5 hPa (-1.4)
CPTR1 - 8452944 - Conimicut Light, RI 38 mi55 min WNW 2.9 G 4.1 65°F 67°F1025.8 hPa (-1.4)
FRXM3 41 mi61 min 67°F 45°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 42 mi55 min NNE 5.1 G 6 71°F 1025.8 hPa (-1.4)
FRVM3 - 8447386 - Fall River, MA 42 mi61 min 68°F 68°F1026.2 hPa
PVDR1 42 mi55 min ENE 2.9 G 8
FOXR1 - 8454000 - Providence, RI 44 mi55 min ESE 1.9 G 5.1 66°F 66°F1025.8 hPa (-1.5)

Wind History for Newport, RI
(wind in knots)    EDIT      (on/off)   Help
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
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
N15
G20
N11
G16
NE10
G17
N10
G16
NE8
G12
NE11
G15
NE5
G8
NE6
NE6
NE5
NE8
NE7
NE6
N6
NE5
N6
G9
N7
G11
N8
G11
NE7
G14
N8
N6
G11
N8
N8
G11
NW7
1 day
ago
N8
G14
NE11
G16
NE9
G14
NE7
G10
NE4
G8
NE5
G9
NE2
NE3
NE3
NE4
NE5
NE4
NE7
NE8
G11
N6
G9
NE10
G15
N9
G16
N10
G14
NE14
G18
N10
G17
NE11
G19
N12
G18
NE11
G17
NE17
2 days
ago
S5
G9
SW7
S5
NW2
N4
G7
N2
N2
N6
E4
N4
N3
G6
N4
G7
NW3
N4
N5
G8
N5
N6
N8
G12
N9
G12
N9
G14
N13
G16
N10
G15
N9
G13
N10
G16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Block Island State Airport, RI1 mi59 minVar 610.00 miFair0°F0°F%1026.4 hPa
Westerly, Westerly State Airport, RI16 mi62 minSSW 710.00 miFair67°F50°F55%1026.3 hPa
Montauk, Montauk Airport, NY20 mi61 minN 3 mi65°F46°F52%1026.7 hPa

Link to 5 minute data for KBID

Wind History from BID (wind in knots)
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
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last 24hrNE11
G19
NE12
G17
N13
G21
NE10
G18
NE10
G17
NE10
G19
NE12
G20
NE14
G18
NE12
G19
NE13
G17
NE9
G17
NE10NE11
G16
NE6N7N6N10N11
G17
NE10NE8NE8--46
1 day agoE9NE10
G16
E8E8
G14
NE9E8--E8E8NE7NE7NE9
G16
NE11
G15
NE10
G15
NE10NE10
G19
NE11
G19
NE14
G21
NE16
G19
NE17
G22
N14
G24
NE13
G20
NE11
G20
NE13
G21
2 days agoW10W10--W6W6W3--N10
G14
----------N3N3NW3------N7N9NE10NE9
G16
NE9
G15

Tide / Current Tables for Block Island (Great Salt Pond), Rhode Island
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Block Island (Great Salt Pond)
Click for Map
Thu -- 04:48 AM EDT     0.17 feet Low Tide
Thu -- 06:30 AM EDT     Sunrise
Thu -- 11:33 AM EDT     Moonset
Thu -- 11:55 AM EDT     2.71 feet High Tide
Thu -- 05:24 PM EDT     0.34 feet Low Tide
Thu -- 06:49 PM EDT     Sunset
Thu -- 09:53 PM EDT     Moonrise
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
2.421.40.80.30.20.40.91.31.82.22.62.72.521.30.70.40.40.71.11.41.82.1

Tide / Current Tables for Moonstone Beach, Rhode Island
   EDIT      (on/off)   Help   One Week of Data
Moonstone Beach
Click for Map
Thu -- 04:58 AM EDT     0.19 feet Low Tide
Thu -- 06:30 AM EDT     Sunrise
Thu -- 11:33 AM EDT     Moonset
Thu -- 12:01 PM EDT     3.03 feet High Tide
Thu -- 05:37 PM EDT     0.39 feet Low Tide
Thu -- 06:49 PM EDT     Sunset
Thu -- 09:52 PM EDT     Moonrise
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
2.72.31.60.90.40.20.30.71.21.82.42.832.82.21.50.80.50.40.60.91.41.82.2

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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 (15,3,4,5)
      (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.