Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Haverhill, MA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:38AMSunset 7:44PM Saturday April 29, 2017 11:17 PM EDT (03:17 UTC) Moonrise 8:27AMMoonset 11:29PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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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ANZ230 Boston Harbor- 1027 Pm Edt Sat Apr 29 2017
Overnight..NW winds 10 to 15 kt. Waves 1 foot or less.
Sun..NE winds 5 to 10 kt...becoming E in the afternoon. Waves 1 foot or less.
Sun night..SE winds 5 to 10 kt. Waves 1 foot or less. A chance of drizzle.
Mon..SE winds 5 to 10 kt. Waves 1 foot or less. A chance of drizzle. Vsby 1 nm or less.
Mon night..S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 nm or less.
Tue..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers likely. Vsby 1 to 3 nm.
Tue night..W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less.
Wed..W winds 10 to 15 kt. Waves 1 foot or less.
Wed night..NW winds 5 to 10 kt. Waves 1 foot or less.
Thu..NE winds around 5 kt. Waves 1 foot or less. A chance of rain.
Thu night..SE winds 5 to 10 kt. Waves 1 foot or less. Rain likely. Vsby 1 to 3 nm. Winds and waves 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 1027 Pm Edt Sat Apr 29 2017
Synopsis for massachusetts and rhode island coastal waters.. High pressure system will set up over the eastern waters on Sunday. A cold front will push across the waters Monday night. A secondary cold front will cross the waters late in the day Tuesday. High pressure slowly builds over the waters for Wednesday and Thursday. Low pressure moves up the coast and over the waters for Friday. 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 Haverhill, MA
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location: 42.76, -71.08     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 300212
afdbox
area forecast discussion
national weather service taunton ma
1012 pm edt Sat apr 29 2017

Synopsis
After a cold front passage tonight, high pressure builds over
new england Sunday with mainly dry but much cooler air. A warm
front moves into the region on Monday, followed by a cold front
on Tuesday. Another storm moves toward southern new england late
Thursday or Friday, and could linger nearby into Saturday.

Near term /until 6 am Sunday morning/
1010 pm update... W-nw winds continue to gust up to 20-30 mph
across eastern ma but they were beginning to diminish in western
ma. The higher elevations of the berkshires were still gusting
to near 30 mph. NAM shows 30-35 kt winds at 925 mb through 11 pm
(03z) then diminishing rapidly after 2 am (06z).

Previous discussion... Winds will shift to NW then N as high
pressure builds to the north. Cooler and much drier will advect
into sne with dewpoints falling into the 30s overnight. Expect
partly cloudy and dry conditions overnight.

Short term /6 am Sunday morning through Sunday night/
Sunday...

high pres builds across gulf of maine to east of CAPE cod
bringing low level easterly winds. Much cooler airmass with
temps up to 20 degrees cooler than today and possibly up to 30
degrees cooler along the eastern ma coast. Highs ranging from
low/mid 50s eastern ma coast to mid 60s ct valley. Sunshine to
start the day will give way to increasing clouds from SW to ne
as mid level moisture spills over the ridge. There is a low
risk for a brief shower in the interior in the developing warm
advection pattern, but most of the day will be dry.

Sunday night...

as high pres moves offshore, warm front will approach sne from
the south and west. Expect low clouds to develop overnight along
with patchy fog along the south coast as higher dewpoint air
moves in over colder sst. Models are generating some light qpf
which is likely some drizzle given the abundant low level
moisture and dry air aloft. Lows will be mainly in the mid/upper
40s.

Long term /Monday through Saturday/
Overview...

overall medium range guidance remains in good agreement through
the middle of next week as long wave h5 high sets up off the se
u.S. Coast. However, changes see on the 12z guidance for late
next week, as both the ECMWF and GFS have tended keep the h5
long wave cutoff low meandering across the SE u.S., while the
ggem broadens it from the carolinas northward to western quebec.

This lends to even less confidence during the fri-sat
timeframe.

Went along with consensus forecast amongst the models, then
trended closer to blend without the ggem for the latter portion
of this period, but with low confidence.

Details...

Monday-Tuesday... Moderate confidence.

Low pressure will push across the great lakes into ontario and
western quebec during this timeframe. Will see associated warm
front lift across the region, but low level moisture will get
trapped so will areas of drizzle and patchy fog forecast through
at least midday Monday across most of the region. This should
lift N as s-sw winds begin to pick up Mon afternoon. Will see
lingering showers through the afternoon mainly across N central
and western areas.

Low level SW jet, up to 50-60 kt along the S coast Mon night,
will combine with some decent instability (slis at zero to -1, k
indices in the lower 30s and capes up to 200 j/kg) ahead of the
approaching cold front to kick off some convection. Have put in
a chance for thunderstorms as the front crosses the region
through the night. Also noting good pwat moisture plume along
this front, up to 1.5 to 1.6 inches, so have also mentioned
possibility of heavy rainfall. Should see precip start to taper
off during the early morning hours across N ct into W mass as
dry slot wraps in behind the passing front.

Even though a mainly SW winds continues, will see mild temps
and gusty winds in place. Diurnal clouds will linger across n
central and western areas with enough cold pooling aloft. Expect
highs across the coastal plain and lower ct valley reach the
lower 70s.

Wednesday... Moderate confidence.

Cyclonic flow continues across the region, so could see some
diurnal clouds develop across N central and western areas during
the day. A weak h5 short wave moves across but expect little if
any precip except possibly across the E slopes of the
berkshires. Temps will run close to seasonal normals across the
coastal plain but down to 5 degrees below normal over the higher
inland terrain.

Thursday-Friday... Low to moderate confidence.

Continue to see another moisture plume working NE out of the se
states toward the region for this timeframe. Kept likely pops
going, with area of moderate to possibly heavy rainfall. Current
forecasted QPF suggests up to 1.5 inches possible, but will
monitor as noted wide solution spread amongst the suite over the
last several runs.

Saturday... Low confidence.

12z ggem appears to be the outlier this go-round, keeping
cutoff low pres spinning across the mid atlantic states, while
gfs and ECMWF push high pres ridging SE out of the great lakes.

With the change on this package, have kept chc pops in for now,
but improving late sat/sat night.

Aviation /02z Sunday through Thursday/
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term... Through Sunday.

Overnight... High confidence.VFR. W-nw wind gusts to 25 kts
through 06z in eastern ma and higher elevations of western ma,
then shifting to the N and diminishing overnight.

Sunday... High confidence.

Vfr cigs. Low risk for a brief shower in the interior. Easterly
winds 5-15 kt.

Sunday night... Moderate confidence.

Conditions deteriorating to MVFR/ifr after midnight as stratus
and patchy drizzle develops. Areas of fog along the south
coast.

Kbos taf... High confidence in taf.

Kbdl taf... High confidence in taf.

Outlook /Monday through Thursday/...

Monday... Moderate confidence.

MVFR-ifr CIGS through mid to late morning in areas of drizzle
and fog. Some improvement across central and portions of eastern
areas from late Mon morning through Mon evening, then will
lower to MVFR- ifr again Mon night with areas of fog and
scattered showers. MVFR- ifr CIGS linger along the S coast mon,
then lower to mainly MVFR across most of the region Mon night.

Scattered tstms Mon night. SW llws up to 45-50 kt at 2000 ft agl
along the S coast Mon night.

Tuesday... Moderate to high confidence.

MVFR-ifr conditions linger early Tue morning in leftover
showers, then improving toVFR through midday. Llws with sw
winds 45-55 kt across S coastal areas, highest across the
islands through 18z.

Wednesday... Moderate to high confidence.VFR.

Wednesday night-Thursday... Moderate confidence.

Vfr early Wed night, then CIGS lowering to MVFR in areas of
-ra. Patchy fog with local ifr vsbys after midnight Mon night
through around 12z-14z thu. -ra and patchy fog lingers with
areas of MVFR cigs/vsbys into Thu night.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term /through Sunday night/... High confidence.

Overnight...

small craft advisories remain posted for the eastern
outer waters until 2 am (06z). West winds will gust to
20-30 kts this evening, then shift to the north overnight
as high pres builds to the north.

Sunday into Sunday night... N/ne winds will veer to the e/se
Sunday then eventually to se/s Sunday night with speeds mostly
15 kt or less. Seas below sca. Vsbys lowering in developing fog
after midnight Sunday night over south coastal waters.

Outlook /Monday through Thursday/...

Monday... Moderate confidence.

Warm front moves N of the waters late Mon night. SE winds along
the E coast shift to s-sw by Mon night, while remaining s-sw on
the southern waters. Gusts up to 30 kt develop on the outer
waters Mon night. Seas build up to 7-9 ft Mon night on the
southern waters and E of CAPE cod. Visibility restrictions in
areas of drizzle and patchy fog Mon through early afternoon,
then in showers through Mon night. Scattered thunderstorms mon
night. Small crafts likely.

Tuesday... Moderate confidence.

Sw winds gusting to 25-30 kt through tue, then shift to W and
diminish Tue night. Seas remain up to 5-9 ft over the open
waters tue, then slowly subside Tue night. Local brief
visibility restriction in patchy light rain and patchy fog tue
through midday.

Wednesday... Moderate to high confidence.

W winds may briefly gust to 25 kt on the southern waters with
seas lingering at 5-6 ft during wed. Winds diminish as they
shift to N Wed night and and seas should subside Wed night
Thursday... Moderate confidence.

Light N winds shift to SE and increase, gusting to 25-30 kt thu
night. Seas will build after midnight to around 4-5 ft on the
southern waters.

Tides/coastal flooding
* isolated minor splashover possible during astronomically high
tide overnight tonight and Sunday night along the east coast
the astronomical high tides remain elevated this weekend.

Low risk and low impact for tonight/s high tide as winds will
be offshore during time of high tide with little or no surge.

The Sunday night tide is a bit lower but onshore flow may result
in minor splashover along the most vulnerable shoreline roads.

Boston high tides (flood stage at boston 12.5 feet)...

11.88 feet / Sunday 2:39 am
11.45 feet / Monday 3:35 am

Box watches/warnings/advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory until 2 am edt Sunday for
anz250-254>256.

Synopsis... Kjc/evt
near term... Gaf/kjc/evt
short term... Kjc
long term... Evt
aviation... Gaf/kjc/evt
marine... Gaf/kjc/evt
tides/coastal flooding... Kjc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 25 mi92 min W 8 68°F 1014 hPa50°F
BHBM3 - 8443970 - Boston, MA 28 mi47 min 70°F 49°F1015.6 hPa
IOSN3 - Isle of Shoals, NH 28 mi77 min W 20 G 23 69°F 1013.4 hPa (+3.2)47°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 32 mi73 min W 14 G 14 58°F 48°F3 ft1013.7 hPa
44013 - BOSTON 16 NM East of Boston, MA 37 mi87 min W 14 G 16 59°F 49°F2 ft1014.1 hPa (+2.9)
44030 - Buoy B0102 - Western Maine Shelf 45 mi73 min W 9.7 G 12 58°F 48°F3 ft1013.3 hPa
WELM1 - 8419317 - Wells, ME 47 mi47 min NW 6 G 8.9 67°F 49°F1014.1 hPa
44098 - Jeffrey's Ledge, NH (160) 48 mi41 min 45°F3 ft
WEXM1 - Wells Reserve, ME 49 mi77 min WSW 5.1 68°F 46°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lawrence, Lawrence Municipal Airport, MA3 mi23 minW 710.00 miFair66°F46°F49%1016.2 hPa
Beverly, Beverly Municipal Airport, MA15 mi24 minW 1010.00 miFair66°F45°F47%1014.8 hPa
Manchester Airport, NH22 mi24 minW 910.00 miFair65°F39°F39%1016.2 hPa
Nashua - Boire Field Airport, NH23 mi21 minWNW 810.00 miFair64°F43°F46%0 hPa
Bedford, Hanscom Field, MA23 mi21 minW 710.00 miFair64°F37°F37%1017 hPa

Wind History from LWM (wind in knots)
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Last 24hrS3S3CalmCalmCalmCalmS5SW4S3SW4SW6SW10SW11
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1 day agoCalmCalmCalm3SE3SE3CalmCalmCalmS53SW6SW7SW6SW75S11
G17
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2 days agoNE5NE3E3E4NE3N6CalmCalmNE5E3CalmCalmW3NE3NE33SW5E5E7E7E5E3E3Calm

Tide / Current Tables for Riverside, Merrimack River, Massachusetts
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Riverside
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Sat -- 03:28 AM EDT     7.22 feet High Tide
Sat -- 05:41 AM EDT     Sunrise
Sat -- 08:28 AM EDT     Moonrise
Sat -- 11:26 AM EDT     -0.60 feet Low Tide
Sat -- 04:08 PM EDT     6.45 feet High Tide
Sat -- 07:42 PM EDT     Sunset
Sat -- 11:29 PM EDT     Moonset
Sat -- 11:41 PM EDT     -0.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.83.15.677.16.65.64.12.61.10-0.5-0.41.23.55.56.46.35.64.53.11.80.6-0

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Sat -- 12:27 AM EDT     1.87 knots Max Flood
Sat -- 02:48 AM EDT     -0.00 knots Slack
Sat -- 05:25 AM EDT     -1.81 knots Max Ebb
Sat -- 05:40 AM EDT     Sunrise
Sat -- 08:27 AM EDT     Moonrise
Sat -- 09:14 AM EDT     0.00 knots Slack
Sat -- 12:59 PM EDT     1.76 knots Max Flood
Sat -- 03:17 PM EDT     -0.00 knots Slack
Sat -- 05:46 PM EDT     -1.58 knots Max Ebb
Sat -- 07:42 PM EDT     Sunset
Sat -- 09:29 PM EDT     0.00 knots Slack
Sat -- 11:28 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.81-0.2-1.2-1.8-1.7-1.4-1-0.20.81.51.61.81.40.3-0.8-1.4-1.6-1.3-0.9-0.40.51.4

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Boston, MA (23,6,7,8)
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Ground Weather Radar Station Boston, MA
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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.