Friday, August23, 2019 L-36.com


Marine Weather and Tides
Danvers, MA

Version 3.4
NOTICE
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 5:57AMSunset 7:35PM Friday August 23, 2019 9:31 AM EDT (13:31 UTC) Moonrise 11:49PMMoonset 1:42PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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
ANZ251 Massachusetts Bay And Ipswich Bay- 717 Am Edt Fri Aug 23 2019
Today..NW winds 5 to 10 kt, becoming sw this afternoon. Seas around 2 ft. Showers likely this morning.
Tonight..NW winds 5 to 10 kt. Seas 2 to 3 ft.
Sat..NE winds 5 to 10 kt. Seas 2 to 3 ft.
Sat night..NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft.
Sun and Sun night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Mon..NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 3 to 5 ft.
Tue..E winds 5 to 10 kt. Seas 3 to 5 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 717 Am Edt Fri Aug 23 2019
Synopsis for massachusetts and rhode island coastal waters.. A cold front south of new england moves farther offshore today. Showers along the front will also move farther offshore. Canadian high pressure moves to the maritimes by late Saturday and lingers there into the first part of next week. This brings fair weather and less humidity for much of the forecast period. Winds become northeast Saturday afternoon and increase in speed Sunday and Monday. 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 Danvers, MA
   Hourly   EDIT   Help
location: 42.59, -70.91     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbox 231112
afdbox
area forecast discussion
national weather service boston norton ma
712 am edt Fri aug 23 2019

Synopsis
A cold front along the south coast this morning moves well
offshore during the day. Showers along the front will move
offshore with the front. Drier less humid air moves in from the
northwest. High pressure will linger across central and eastern
canada through this weekend into early next week. Cool
temperatures both Sunday and Monday with the onshore wind flow
in place, along with spotty light rain or showers especially
near the coast. As the high slowly pushes east, temperatures
will moderate by mid week, but there could be a threat for
showers as a cold front approaches.

Near term until 6 pm this evening
650 am update...

noting the cold front S of long island to near nantucket at 09z.

However, N of the front, a band of showers lying from SE ny
through most of ct into N ri and central to NE mass on latest ne
regional 88d radar imagery. Only spotty light showers being
reported on latest observations, with the steadiest light rain
from around khpn-kdxr-kijd and kowd southeastward at 10z. While
the rain elements continue to shift ne, while the entire area
is slowly shifting s-se behind the front. Mainly dry conditions
noted across central and western mass, but may see a few spotty
showers over the next hour or two.

Back edge of the cloud deck, noted across SW me to central nh
and southern vt at 1030z as seen on latest goes-east nighttime
microphysics rgb satellite imagery. Big question will be how
long will the clouds linger before slowly pushing southward.

This may take a while as the h5 long wave trough will be slow to
swing across, so may see the w-sw mid level steering flow
linger longer than currently forecast.

Previous discussion...

once the flow shifts, expect clearing skies, earliest in
northern ma and latest along the south coast. Cross sections
show drying aloft and at the surface, but a lingering moist
layer around 850 mb. The mixed layer is expected to reach a
little past 850 mb, so there should be some diurnal CU formation
over the interior. The dry air should limit the extent.

Temperatures at 850 mb will be 10-12c, so we expect MAX sfc
temps of 76f to 82f. Best of all, dew points will be in the
upper 40s and 50s everywhere this afternoon evening.

Short term 6 pm this evening through 6 pm Saturday
A fair weather period, quite welcome to most after the recent
spell of humidity. High pressure over northern ontario builds
east, reaching the maritimes late Saturday. This brings a light
north flow to new england tonight, turning to a northeast flow
by Saturday afternoon.

With dew points upper 40s and 50s, expect min temps tonight in
the 50s most places... With upper 40s in the cold spots and
around 60 in large urban areas. The developing northeast flow
will play havoc with mixing, but daytime heating and 8c at 850
mb suggest sfc temperatures into the 70s. If anyone stands a
chance at 80, it will be the ct valley of hartford-springfield.

Long term Saturday night through Thursday
Highlights...

* expect much cooler than normal temperatures Sunday and Monday
especially along the east coast
* onshore winds will bring spotty light rain or showers at
times into mid week
* temperatures return to near normal levels around mid week
* another chance for showers Wednesday into Thursday
details...

Saturday night through Monday...

with a large high pressure area extending across quebec and
northern new england, a return northeasterly wind flow will
bring cool temperatures across the region especially along east
coastal areas into early next week.

With the onshore wind flow, the long ocean fetch will bring
increasing low level moisture westward. So, can not rule out
periods of spotty light rain and or showers at times mainly over
the weekend. By Monday, it appears the southern extend of the
large ridge will start to shift into N mass, which will bring
drier conditions across the entire region with good subsidence.

So, any spotty precip early should end, though clouds may linger
across eastern and S coastal areas through the day.

Expect daytime highs mainly in the lower to mid 70s, but may
not break 70 along the immediate E coast as well as outer cape
cod and nantucket.

With the long fetch across the western atlc, will see E to ne
winds gusting up to 25-30 mph along the E coast both Sunday and
Monday.

Monday night through Thursday...

the large high center across the maritimes will begin to shift
e during this timeframe as a cold front slowly shifts out of the
great lakes. Winds will diminish somewhat as the pressure
gradient relaxes, then will veer to se-s by later Wed into thu.

Increasing uncertainty as to how quickly the ridge will shift
further offshore along with the timing of the approaching cold
front. At this point, the ridge will keep dry conditions in
place on Tuesday, except for spotty light showers mainly near
the S coast. Deepening layer moisture as well as slowly but
steadily increasing dewpoints will approach starting later
Tuesday and continue through Thursday. Expect highs on Wed to be
close to seasonal levels, then upward to around 5 degrees above
normal on thu.

The approaching cold front will bring a more organized shot for
showers starting late Tuesday night across the E slopes of the
berkshires, then slowly shifting E Wed and thu. Timing of the
actual front still in question due to the exit of the maritime
high pressure.

Aviation 12z 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 ... Moderate confidence.

Through 14z...

mainlyVFR. Mainly dry N central and W mass. A band of showers
from N ct through NE mass will shift ne, but the entire zone
will shift s-se. May see brief, local MVFR conditions in any
heavier showers or lower CIGS mainly across NE ct ri S coastal
mass.

Rest of today...

vfr most of the region. Brief MVFR CIGS vsbys in showers along
the south coast through around 16z-18z. Otherwise becoming
mostly sunny with dry conditions. A few puffy clouds form
inland during the day, but with bases 4000-5000 feet. Northwest
winds turning north by sunset.

Tonight...

vfr with mostly clear skies and light north winds.

Saturday...

vfr. North wind turns from the northeast during the afternoon.

Kbos terminal... High confidence in taf
kbdl terminal... High confidence in taf.

Outlook Saturday night through Tuesday ... Moderate to high
confidence.

Saturday night:VFR. Breezy.

Sunday through Monday: mainlyVFR, with local MVFR possible.

Breezy.

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

Patchy br.

Tuesday:VFR. Breezy. 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 Saturday ... High confidence.

Today... Scattered showers this morning with brief poor vsbys.

Conditions should improve from north to south through around
midday, with drying in the afternoon. Winds will be less than
25 kts through the day. Seas 4 feet or less.

Tonight... Winds less than 20 kt and seas 4 feet or less.

Saturday... Winds less than 20 kt. Seas 4 feet or less.

Outlook Saturday night through Tuesday ... Moderate confidence.

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

Sunday: moderate risk for small craft advisory winds with gusts
up to 25 kt. Seas up to 5 ft. Slight chance of rain.

Sunday night: low risk for small craft advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Slight chance of rain.

Monday: low risk for small craft advisory winds with gusts up
to 30 kt. Seas up to 5 ft. Slight chance of rain.

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

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

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Wtb evt
near term... Wtb evt
short term... Wtb
long term... Evt
aviation... Wtb evt
marine... Wtb evt


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
BHBM3 - 8443970 - Boston, MA 18 mi62 min 71°F 1014.5 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 19 mi88 min WSW 3.9 G 3.9 67°F 65°F1 ft1013.4 hPa
44013 - BOSTON 16 NM East of Boston, MA 22 mi42 min 68°F 68°F1 ft1013.3 hPa (+1.7)
IOSN3 - Isle of Shoals, NH 30 mi32 min WNW 12 G 13 66°F 1013.1 hPa (+1.4)58°F
BGXN3 - Great Bay Reserve, NH 33 mi107 min W 4.1 67°F 1014 hPa58°F
44073 36 mi148 min WNW 7.8 G 9.7 68°F
44098 - Jeffrey's Ledge, NH (160) 42 mi54 min 70°F2 ft
44030 - Buoy B0102 - Western Maine Shelf 48 mi88 min W 3.9 G 5.8 66°F 68°F2 ft1013.3 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 49 mi42 min WNW 9.7 G 12 67°F 2 ft1014.2 hPa (+1.8)58°F

Wind History for Wells, ME
(wind in knots)    EDIT      (on/off)   Help
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
5
AM
6
AM
7
AM
8
AM
Last
24hr
W5
G8
SE6
SE4
S12
S12
S10
S11
S10
SE2
SE2
NW1
W4
NW5
NW3
G6
--
W4
W4
G7
NW5
NW4
G7
N4
--
NW3
G7
NW3
W4
1 day
ago
S4
S2
S6
SW4
G9
W2
S6
NE3
NE2
NE7
NE5
NE2
SW2
--
NE2
--
NE1
W2
W4
G7
W4
G7
W2
S4
SW4
G7
W2
G6
W3
G7
2 days
ago
N5
G8
N3
G6
--
SE6
SE7
G10
S9
S9
S10
S12
S11
SW9
SW5
S1
NW2
N3
N2
NW2
--
NW1
N2
N1
N1
W1
SE3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA1 mi99 minNW 610.00 miA Few Clouds70°F60°F73%1013.9 hPa
Lawrence Municipal Airport, MA15 mi38 minWNW 510.00 miA Few Clouds69°F57°F66%1014.8 hPa
Boston, Logan International Airport, MA16 mi38 minWNW 610.00 miMostly Cloudy72°F57°F61%1014.3 hPa
Laurence G Hanscom Field Airport, MA22 mi36 minWNW 410.00 miMostly Cloudy72°F59°F64%1015.4 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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
5
AM
6
AM
7
AM
8
AM
Last 24hrS43--SW8SW7SW8W10W13
G18
W13W8W4W3W5------------------W5NW6
1 day ago----SW10SE8E7SE8SE10--E6S6S5S3S5S5--W10W7--SW3SW3--CalmW3S3
2 days agoN8N54SE3CalmSE8SE7SE7----SE4SE4SE3------------Calm--CalmCalmS4

Tide / Current Tables for Beverly, Massachusetts
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Beverly
Click for Map
Fri -- 05:15 AM EDT     8.22 feet High Tide
Fri -- 05:58 AM EDT     Sunrise
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 11:17 AM EDT     1.33 feet Low Tide
Fri -- 01:42 PM EDT     Moonset
Fri -- 05:35 PM EDT     8.90 feet High Tide
Fri -- 07:33 PM EDT     Sunset
Fri -- 11:48 PM EDT     Moonrise
Fri -- 11:53 PM EDT     1.10 feet Low 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
1.73.14.76.27.58.27.96.85.23.62.21.41.634.76.37.78.78.87.96.34.52.91.6

Tide / Current Tables for Marblehead Channel, Massachusetts Current
   EDIT      (on/off)   Help   One Week of Data
Marblehead Channel
Click for Map
Fri -- 12:24 AM EDT     0.00 knots Slack
Fri -- 02:26 AM EDT     0.40 knots Max Flood
Fri -- 05:58 AM EDT     Sunrise
Fri -- 06:02 AM EDT     -0.00 knots Slack
Fri -- 08:58 AM EDT     -0.32 knots Max Ebb
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 12:39 PM EDT     0.00 knots Slack
Fri -- 01:41 PM EDT     Moonset
Fri -- 02:48 PM EDT     0.44 knots Max Flood
Fri -- 06:26 PM EDT     -0.00 knots Slack
Fri -- 07:32 PM EDT     Sunset
Fri -- 09:32 PM EDT     -0.36 knots Max Ebb
Fri -- 11:48 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
-0.10.20.40.40.30.20-0.2-0.3-0.3-0.3-0.2-0.10.10.40.40.40.30.1-0.1-0.3-0.3-0.4-0.3

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of    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 (9,2,3,4)
      (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.