Sunday, August18, 2019 L-36.com


Marine Weather and Tides
North Eastham, 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 5:51AMSunset 7:38PM Sunday August 18, 2019 5:51 PM EDT (21:51 UTC) Moonrise 9:27PMMoonset 8:34AM Illumination 89% 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
ANZ231 Cape Cod Bay- 329 Pm Edt Sun Aug 18 2019
Tonight..S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A slight chance of showers with isolated tstms after midnight. Vsby 1 to 3 nm.
Mon..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Patchy fog. Vsby 1 to 3 nm.
Mon night..SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft.
Tue..NW winds 5 to 10 kt, becoming ne in the afternoon. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 nm.
Tue night..S winds around 5 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Wed and Wed night..SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers.
Thu..W winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Fri..NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Fri night..W winds 5 to 10 kt. Seas 1 foot or less. 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 329 Pm Edt Sun Aug 18 2019
Synopsis for massachusetts and rhode island coastal waters.. A series of weakening fronts will help maintain light winds and flat seas today through Tue. A cold front should cross the waters Thu night followed by high pres from the great lakes Fri into next weekend. 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 North Eastham, MA
   Hourly   EDIT   Help
location: 41.92, -70.03     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kbox 182118
afdbox
area forecast discussion
national weather service boston norton ma
518 pm edt Sun aug 18 2019

Synopsis
Very warm and humid conditions will continue through mid week,
along with showers or thunderstorms at times. A cold front will
cross the region later in the week, followed by cooler and drier
conditions.

Near term until 6 am Monday morning
With the persistent onshore winds along the shore, noting
several sea breeze fronts across E mass and ri, a lone shower
developed across W central plymouth county, but moved offshore
and weakened quickly. Also noting a few showers have developed
since 19z, moving across portions of W mass and hartford tolland
counties in N central ct.

An area of showers thunderstorms will work eastward through
tonight with h5 short wave. Noting sb capes upwards to 2000
j kg, but some capping in place along with stabilizing cooler
air with the sea breezes in place across eastern mass and ri.

However, have noted a showers with a pretty good core
approaching boston, but core not quite up to -10c so no
lightning seen with this cell. Monitoring closely.

Also watching broken line of showers thunderstorms working
eastward out of central ny N central pa, along with scattered
showers thunderstorms working NE out of N nj, which are the
cells affecting N ct late this afternoon.

12z vf3-nssl and hrrrv3 appear to have handled the current
convection rather well up to this point as compared to the
observed mrms data. The vf3 guidance holds on to the convection
as it crosses the region through around 03z or so before
weakening as it enters the more stable marine layer across e
mass ri.

Short term 6 am Monday morning through Monday night
Monday...

another short wave will approach the region in the continued
nearly zonal mid level steering flow, which appears a bit more
potent on the 12z GFS and canadian models. Have mentioned chc
pops at this point, along with widely sct thunderstorms as this
system pushes across Monday afternoon evening. With the hot
temps expected, will not see the capping we are getting this
afternoon evening, though remain in general thunder issued by
spc this afternoon.

Expecting temps to be the warmest of the week, with highs
reaching the 80s to lower 90s. However, with dewpoints in the
70 to 73 degree range, heat indices will be in the mid to upper
90s, the highest across the mid and lower ct valley. Have issued
heat advisories for the hartford-springfield area into N central
ct (tolland county) through Monday evening.

Monday night...

last of showers thunderstorms will weaken as they shift se
through around midnight. Should see improving conditions as
winds shift to w-nw overnight. Surface ridge slowly shifts E out
of ny state after 06z tue. Temps bottom out in the mid 60s
across the E slopes of the berkshires to the lower 70s across
the coastal plain.

Long term Tuesday through Sunday
18 12z guidance continues to indicate a series of mid level
shortwaves tracking through southern new england thru mid week
in a progressive flow, while ridging and much weaker flow
prevails across the southern us. Also the potential continues
for a cold front to drop into sne on Tuesday. However it is not
expected to push south of our area, but rather stall then
advance northward as a warm front by Wednesday. Since the very
humid airmass remains over our area thru midweek, the short
waves and stalling frontal boundary will bring a continued risk
for showers and thunderstorms at times. Some showers, and any
thunderstorms, will be capable of producing localized
downpours.

At this point for Tuesday, we have heat indices as high as the
low 90s, which is just short of the multi-day criteria. However
this will need to be monitored closely.

A more progressive cold front will finally cross our region
sometime Thursday into Thursday night. Once this front passes,
high pressure should take over. Humidity will become much more
comfortable Friday into Saturday with slightly below normal
temperatures expected. Some moderation in temperatures may occur
on Sunday as the high becomes centered offshore, but the
subsidence is expected to bring another dry day for the weekend.

Aviation 20z Sunday through Friday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ... Moderate confidence.

Through 00z... MainlyVFR conditions, except patchy ifr-lifr
cigs across portions of CAPE cod and the islands. Showers and
isolated tsra will continue to develop as they shift E out of
ny state into western ma N central ct by around 23z.

Tonight... Scattered shra tsra will cross the region as the mid
level disturbance moves across. MainlyVFR, but patchy ifr
conditions around or after 16z in heavy downpours and possible
wind gusts up to around 40 kt. Should weaken as they shift E by
around 04z or so. Conditions lower to ifr-lifr in low clouds fog
around or after midnight mainly across E mass ri and possibly
into N central NW mass, which should begin to improve by 12z
mon.

Monday... Fog lifts withVFR vsbys by mid morning. CIGS slowly
improve toVFR by mid-late morning. Another round of scattered
shra tsra move in Monday afternoon with local ifr conditions as
they cross.

Monday night... Leftover shra tsra Mon evening with brief MVFR-
ifr conditions, thenVFR cigs. Patchy fog with MVFR-ifr vsbys
mainly after midnight.

Kbos terminal... Moderate confidence in taf. Conditions should
lower to ifr to lifr for after 05z through around 12z.

Kbdl terminal... Moderate confidence in taf.

Outlook Tuesday through Friday ... Moderate confidence.

Tuesday:VFR. Chance shra, slight chance tsra.

Tuesday night: mainlyVFR, with areas ifr possible. Chance
shra, slight chance tsra, patchy br.

Wednesday: mainlyVFR, with local MVFR possible. Chance shra,
slight chance tsra.

Wednesday night: mainlyVFR, with local ifr possible. Chance
shra, slight chance tsra, patchy br.

Thursday:VFR. Chance shra, slight chance tsra.

Thursday night:VFR. Slight chance shra.

Friday:VFR.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ... High confidence.

Tonight and Monday... S-sw winds 10 kt or less tonight,
increasing to 10-15 kt Monday with gusts up to 20 kt on the
eastern open waters Monday afternoon and evening. Seas up to 3
ft. Reduced visibility in areas of dense fog especially across
the cooler open waters. Chance for showers thunderstorms mainly
on the eastern waters tonight, then again late Monday.

Monday night... Sw winds 10-15 kt shift to w-nw around 10 kt
after midnight. Seas up to 4 ft on the southern waters. Reduced
visibility in areas of fog. Leftover showers thunderstorms
weaken as they shift S overnight.

Main concern will be areas of dense fog with visibility below
1sm late tonight and Monday morning, then again Monday night.

Outlook Tuesday through Friday ... Moderate confidence.

Tuesday: winds less than 25 kt. Chance of rain showers, slight
chance of thunderstorms. Local visibility 1 to 3 nm.

Tuesday night: winds less than 25 kt. Seas locally approaching
5 ft. Chance of rain showers, slight chance of thunderstorms,
patchy fog. Local visibility 1 to 3 nm.

Wednesday: winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain showers, slight chance of thunderstorms.

Wednesday night through Thursday: winds less than 25 kt. Seas
up to 5 ft. Chance of rain showers, slight chance of
thunderstorms.

Thursday night: winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain showers.

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

Slight chance of rain showers.

Box watches warnings advisories
Ct... Heat advisory from 11 am to 8 pm edt Monday for ctz002-003.

Ma... Heat advisory from 11 am to 8 pm edt Monday for maz011.

Ri... None.

Marine... None.

Synopsis... Evt nmb
near term... Evt
short term... Evt
long term... Nmb
aviation... Evt nmb
marine... Evt nmb


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
44090 17 mi52 min 71°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 21 mi62 min ESE 7.8 G 7.8 69°F 2 ft1016.1 hPa (-0.3)69°F
44020 - NANTUCKET SOUND 32 mi32 min SSW 9.7 G 12 71°F 76°F71°F
WAXM3 - Waquoit Bay Reserve, MA 35 mi67 min SSE 1.9 78°F 1016 hPa73°F
44013 - BOSTON 16 NM East of Boston, MA 44 mi62 min E 7.8 G 9.7 71°F 70°F2 ft1014.5 hPa (-0.4)71°F
BZBM3 - 8447930 - Woods Hole, MA 44 mi58 min 74°F 71°F1015.8 hPa
NTKM3 - 8449130 - Nantucket Island, MA 44 mi58 min SW 4.1 G 8 78°F 75°F1016.4 hPa

Wind History for Nantucket Island, MA
(wind in knots)    EDIT      (on/off)   Help
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
4
PM
5
PM
Last
24hr
E6
G10
E8
E4
SE4
E3
E4
SE2
SE2
--
S2
W1
--
W1
W2
W2
W2
G5
NW4
G7
--
NW1
N6
SW8
G11
SW6
G10
SW4
G8
S4
G8
1 day
ago
E6
G9
E7
E4
E5
G8
E4
SE5
SE6
E5
SE5
SE3
G7
E4
G7
E5
E8
E4
E6
G10
E6
SE6
SE5
E5
E6
E7
E7
E7
E6
2 days
ago
NE9
G13
NE10
NE9
G13
NE7
G11
E6
E8
E5
E6
E6
E5
E5
G8
E6
G9
E5
G8
E6
E5
E4
NE7
NE6
G9
NE7
NE7
G10
NE7
E5
G8
E7
G11
E7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Provincetown Municipal Airport, MA11 mi1.9 hrsS 710.00 miA Few Clouds80°F71°F74%1016.6 hPa
Chatham, Chatham Municipal Airport, MA15 mi2 hrsS 510.00 miOvercast74°F71°F91%1017.2 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA21 mi2.9 hrsSSW 9 G 173.00 miMostly Cloudy with Haze76°F71°F85%1016.9 hPa

Link to 5 minute data for KPVC

Wind History from PVC (wind in knots)
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
4
PM
5
PM
Last 24hrSE5SE5E4SE4SE4SE5SE3S4S6SW5--N4NE4E3Calm--Calm44NE6NE6NE4S7S6
1 day agoE8SE8SE5--SE5------SW3S4Calm--SE6SE3S6--SE6SE7S7SE8S8SE6E7E7
2 days agoE6----E3E3E3CalmCalm--Calm--NE3E3Calm----NE6NE8E10E11E10SE7SE6E8

Tide / Current Tables for Wellfleet, Massachusetts
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Wellfleet
Click for Map
Sun -- 01:51 AM EDT     10.64 feet High Tide
Sun -- 05:51 AM EDT     Sunrise
Sun -- 08:22 AM EDT     0.32 feet Low Tide
Sun -- 08:35 AM EDT     Moonset
Sun -- 02:18 PM EDT     9.95 feet High Tide
Sun -- 07:36 PM EDT     Sunset
Sun -- 08:35 PM EDT     0.87 feet Low Tide
Sun -- 09:26 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
8.310.110.69.98.36.23.81.70.40.72.24.26.68.79.99.78.56.74.62.61.112.34.4

Tide / Current Tables for Cape Cod Lighthouse, SE of, Cape Cod, Massachusetts
   EDIT      (on/off)   Help   One Week of Data
Cape Cod Lighthouse
Click for Map
Sun -- 01:49 AM EDT     8.10 feet High Tide
Sun -- 05:50 AM EDT     Sunrise
Sun -- 08:03 AM EDT     0.24 feet Low Tide
Sun -- 08:34 AM EDT     Moonset
Sun -- 02:16 PM EDT     7.58 feet High Tide
Sun -- 07:36 PM EDT     Sunset
Sun -- 08:16 PM EDT     0.66 feet Low Tide
Sun -- 09:26 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
6.57.88.17.56.14.42.50.90.20.723.55.36.87.57.36.34.83.21.60.712.13.7

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 (17,4,5,8)
      (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.