Sunday, September23, 2018 L-36.com


Marine Weather and Tides
Amesbury Town, MA

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9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:31AMSunset 6:39PM Sunday September 23, 2018 8:46 AM EDT (12:46 UTC) Moonrise 6:23PMMoonset 4:47AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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ANZ251 Massachusetts Bay And Ipswich Bay- 716 Am Edt Sun Sep 23 2018
.small craft advisory in effect from late tonight through Monday evening...
Today..N winds around 5 kt, becoming se around 5 kt this afternoon. Seas around 2 ft.
Tonight..S winds around 5 kt, becoming N 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 3 ft.
Mon..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Mon night..E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft.
Tue..SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Rain likely.
Tue night..S winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers. Vsby 1 to 3 nm.
Wed..S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 nm.
Wed night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Thu..N winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..NE winds 5 to 10 kt. Seas around 2 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 716 Am Edt Sun Sep 23 2018
Synopsis for massachusetts and rhode island coastal waters.. High pres will build over the waters today. A backdoor cold front will move south across the waters late tonight as a strong high pres builds across quebec through Mon before moving to nova scotia Tue. A warm front will lift north of the waters Wed and be followed by a cold front moving across the waters early Thu. 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 Amesbury Town, MA
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location: 42.83, -70.99     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 231215
afdbox
area forecast discussion
national weather service boston norton ma
815 am edt Sun sep 23 2018

Synopsis
High pressure will bring dry and seasonable temperatures today.

A cold front moves south across the region late tonight
followed by a surge of gusty northeast winds and unseasonably
cool temperatures Monday. A warm front approaches with
scattered showers across western areas Monday night. The
showers will fall heavily at times during Tuesday. Warmer and
more humid conditions return Tuesday night into Wednesday
night, along with scattered showers and a few thunderstorms as
a cold front approaches. Dry, seasonable conditions return late
this week, though a few showers are possible Thursday night into
Friday as a fast moving frontal system passes.

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

current forecast looks on track. Some patchy fog in the river
valleys of far interior ma will lift and dissipate over the next
couple of hours. Otherwise, continue to expect high cloud shield
to gradually push south today.

Early morning discussion follows...

high pres remains in control today keeping deeper moisture and
shower risk south of new eng. High cloud shield expected to
gradually push south across the region today with the most
sunshine across northern ma but south coastal areas will see
partial sunshine. Highs should top out near 70 degrees for most
areas, a bit cooler along the coast where sea breezes will
develop.

Short term 6 pm this evening through 6 pm Monday
Mostly clear skies and light winds for much of tonight will
result in another chilly night with lows dropping into the 40s
for most locations. Main feature is backdoor cold front which
drops south across the region late tonight, mostly after
midnight, as strong high pres builds across quebec through mon.

A decent surge of gusty NE winds expected behind the front late
tonight into Mon morning, especially across eastern ma where a
period of gusts to 20-30 mph likely. Cross sections and
soundings show a shallow layer of moisture around 900-950 mb
developing by daybreak Mon across eastern ma then spreading west
within moist low level E NE flow. This will likely bring a fair
amount of lower clouds to the region on Monday, but expect some
breaks of Sun as well. It will be much cooler Mon as 925 mb
temps fall to 6-8c with a pocket of 4c air across NE ma. Highs
will range from the mid upper 50s across central and NE ma to
lower 60s lower ct valley and ri SE ma. A definite fall feel on
Monday.

Long term Monday night through Saturday
Highlights...

* rain and showers return Monday night Tuesday, with locally
heavy rainfall
* warm and humid Tuesday night into Wednesday night with
scattered showers and a few thunderstorms possible
* seasonable temperatures late this week, with a few showers
possible Thursday night into Friday
details...

Monday night...

high pressure across northern new england will shift E into the
maritimes during Monday night. Should see dry conditions
through around midnight, then area of rain will push into
central and western areas during the early morning hours on
Tuesday. Expect some gusty e-ne winds mainly along the coast.

It will remain chilly especially across the higher inland
terrain as temps bottom out in the lower-mid 40s.

Tuesday through Wednesday night...

warm front approaches Tuesday bringing periods of rain. Pwats
increase to around 2 sd above normal, so there will be a swath
of rain falling heavily at times on Tuesday. Could see between
0.75 and 1 inch of rainfall across central and western areas.

There may be some pockets of poor drainage and urban flooding in
the typically prone areas. At this point, still not expecting
any flash flooding as rainfall rates not high enough. Temps will
hold in the 60s across the region on Tuesday, possibly touching
70 along the S coast.

As the warm front moves through Tue night, temps will remain
steady or slowly rise as showers continue. Instability increases
with the milder, more humid air. K indices in the lower 30s and
surface based lis drop to -1 to -2. So have also mentioned
isolated thunder ahead of an approaching cold front later wed,
pushing through Wed night. Temps will rise to the 70s ahead of
the front during wed, which will help enhance any convection.

Thursday through Saturday...

medium range model guidance continues to signal a fast moving
northern stream mid level steering flow. At this point, any
leftover showers early Thursday should move offshore as high
pressure moves across. There may be a few showers as a weak h5
short wave moves across mainly after midnight Thursday night
into Friday, then more dry, seasonal conditions as another high
approaches Saturday.

Aviation 12z Sunday through Thursday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday ...

today... High confidence.

Vfr, except some localized ifr lifr fog in some of the river
valleys of interior ma, lifting around 14z. Light winds with
coastal sea breezes developing.

Tonight and Monday... High confidence.

Vfr, but areas of MVFR CIGS developing in eastern new eng
toward daybreak Mon and spreading west during mon. Increasing
ne winds developing across eastern ma late tonight and mon
morning with a period of gusts to 20-25 kt.

Kbos terminal... High confidence in taf.

Kbdl terminal... High confidence in taf.

Outlook Monday night through Thursday ...

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

Chance ra.

Tuesday: mainlyVFR, with areas MVFR possible. Breezy. Ra, shra
likely.

Tuesday night: MVFR ifr conditions possible. Breezy. Chance
shra, isolated tsra, patchy br.

Wednesday: mainly MVFR, with local ifr possible. Breezy. Chance
shra, isolated tsra.

Wednesday night: MVFR ifr conditions possible. Breezy. Chance
shra, isolated tsra, patchy br.

Thursday: mainlyVFR, with local 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 Monday ... High confidence.

Today...

light winds and seas with high pres over the waters.

Tonight and Monday...

increasing NE winds develop later tonight into Mon behind a
backdoor cold front. Gusts to 25-30 kt likely across eastern ma
waters late tonight into Mon morning with gusty winds shifting
to south coastal waters during the day mon. SCA will be issued
for eastern ma waters starting late tonight and will likely need
to be expanded to some of the south coastal waters on Monday.

Outlook Monday night through Thursday ...

Monday night: low risk for small craft advisory winds with
gusts up to 25 kt. Areas of rough seas.

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

Tuesday night: moderate risk for small craft advisory winds
with gusts up to 30 kt. Rough seas up to 8 ft. Rain showers
likely, isolated thunderstorms. Local visibility 1 to 3 nm.

Wednesday: moderate risk for small craft advisory winds with
gusts up to 25 kt. Areas of rough seas. Chance of rain showers,
isolated thunderstorms.

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

Chance of rain showers, isolated thunderstorms, patchy fog.

Areas of visibility 1 to 3 nm.

Thursday: winds less than 25 kt. Local rough seas. Slight
chance of rain showers.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory from 8 am to 8 pm edt Monday for
anz232>235-237-255-256.

Small craft advisory from 4 am to 2 pm edt Monday for anz230.

Small craft advisory from 6 am to 4 pm edt Monday for anz231.

Small craft advisory from 4 am to 8 pm edt Monday for anz250-
251.

Small craft advisory from 6 am to 8 pm edt Monday for anz254.

Synopsis... Kjc evt
near term... Kjc nmb
short term... Kjc
long term... Evt
aviation... Kjc evt nmb
marine... Kjc evt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 18 mi62 min Calm 45°F 45°F
IOSN3 - Isle of Shoals, NH 22 mi47 min NNE 8.9 G 9.9 56°F 1024 hPa (+0.6)51°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 31 mi103 min NNW 7.8 G 9.7 56°F 63°F3 ft1022.5 hPa
BHBM3 - 8443970 - Boston, MA 33 mi29 min 53°F 1024.8 hPa
44013 - BOSTON 16 NM East of Boston, MA 38 mi57 min NNW 5.8 G 7.8 57°F 65°F3 ft1023.6 hPa (+0.5)51°F
WELM1 - 8419317 - Wells, ME 41 mi35 min 51°F 61°F1024.9 hPa
WEXM1 - Wells Reserve, ME 42 mi47 min NW 5.1 47°F 44°F
44098 - Jeffrey's Ledge, NH (160) 44 mi41 min 63°F2 ft

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lawrence Municipal Airport, MA10 mi53 minN 010.00 miFair51°F44°F77%1025.4 hPa
Beverly, Beverly Municipal Airport, MA18 mi54 minNNW 510.00 miFair50°F46°F86%1023.8 hPa
Pease Air Force Base / Portsmouth, NH20 mi1.8 hrsNW 310.00 miMostly Cloudy45°F43°F93%1024.3 hPa

Wind History from LWM (wind in knots)
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Last 24hrW7N15
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NW6NW7N8N4NW3NW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day ago644S7S6S6SW10
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2 days agoNE10NE12
G17
--NE9NE9E9E8E6E7E6E4E4E3CalmCalmCalmCalmCalmE3CalmCalmCalmCalmCalm

Tide / Current Tables for Merrimacport, Merrimack River, Massachusetts
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Tide / Current data from XTide NOT FOR NAVIGATION
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Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Tide / Current data from XTide NOT FOR NAVIGATION
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Weather Map and Satellite Images
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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.
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Wind Forecast for Boston, MA (8,2,3,4)
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Ground Weather Radar Station Boston, MA
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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.