Thursday, April2, 2020
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Marine Weather and Tides
Ipswich, MA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 6:21AMSunset 7:12PM Thursday April 2, 2020 4:57 AM EDT (08:57 UTC) Moonrise 12:34PMMoonset 3:14AM Illumination 69% Phase: Waxing Gibbous; Moon at 9 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- 416 Am Edt Thu Apr 2 2020
.gale warning in effect from late tonight through late Friday night...
Today..NW winds 15 to 20 kt, increasing to 20 to 25 kt this afternoon. Gusts up to 30 kt. Seas 6 to 9 ft. Rain. Vsby 1 nm or less this afternoon.
Tonight..N winds 20 to 25 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt after midnight. Seas 9 to 14 ft. Rain. Vsby 1 to 3 nm.
Fri..N winds 25 to 30 kt with gusts up to 45 kt. Seas 12 to 17 ft. Rain likely. Vsby 1 to 3 nm.
Fri night..NE winds 20 to 25 kt with gusts up to 40 kt. Seas 11 to 16 ft. A chance of rain. Vsby 1 to 3 nm.
Sat..NE winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 9 to 12 ft. A chance of showers.
Sat night..E winds 5 to 10 kt. Seas 7 to 10 ft.
Sun..S winds 5 to 10 kt. Seas 5 to 7 ft.
Sun night..SW winds 5 to 10 kt. Seas 4 to 7 ft. A chance of showers.
Mon..NW winds 5 to 10 kt. Seas 4 to 6 ft.
Mon night..W winds 5 to 10 kt. Seas 3 to 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 416 Am Edt Thu Apr 2 2020
Synopsis for massachusetts and rhode island coastal waters.. A large and intense ocean storm well east of the waters will gradually pinwheel back toward the coast through tonight before moving S the waters Fri into Fri night. This storm will bring gale to storm force winds to the waters tonight and Fri. High pres will build over the waters during the 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 Ipswich, MA
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location: 42.68, -70.83     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 020825 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 425 AM EDT Thu Apr 2 2020

SYNOPSIS. A large and intense ocean storm well southeast of New England will pinwheel back toward the coastline tonight and Friday. This storm will bringing strong to possibly damaging winds and coastal flooding to coastal eastern MA especially Cape Cod and the Islands. In addition periods of rain, heavy at times will overspread the area through Friday. Mainly dry weather returns for the weekend along with temperatures not as cool.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Potent ocean storm with sub 980mb pressure well east of the benchmark with lots of lightning around the center. Strong downstream blocking pattern will result in this storm drifting slowly N/NW today with its large and expansive circulation pushing deep moisture west across the region within the trowal airstream. Bands of rain are backing in across eastern MA and rain will gradually push west across SNE through the day. Initially, the rain will be focused across eastern half of SNE through the morning as precip erodes on western edge due to presence of drier air to the west. However, expect the areas of light rain to eventually make it to the CT Valley by mid/late afternoon. Windy and cool day with northerly gusts to 30 mph, but up to 40 mph over the Cape/Islands. Highs will range through the 40s, to around 50 CT valley. Coolest temps higher terrain and east coastal MA and Cape/Islands.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/. Tonight into Friday .

Large ocean storm retrogrades back to the west making its closest approach to SNE Fri morning as it passes just SE of the 40N/70W benchmark before continuing to move southward during Fri. Bands of rain will continue to move from east to west from the ocean, focused across eastern MA along the nose of an intensifying low level jet. Occasional bands of heavier rainfall are likely along east coastal MA.

Strong to damaging winds will be a concern along east coastal MA and especially Cape Cod and the Islands late tonight into Fri. Low level jet 50-55 kt moves in from the Gulf of Maine to the SNE coastline. Soundings show a shallow but sufficiently mixed boundary layer suggesting much of this wind will mix down to the surface. We converted the high wind watch for the Cape/Islands to a warning for gusts to 60 mph, and issued a wind advisory for east coastal MA for gusts to 50 mph.

See coastal flooding section below for a discussion of coastal flood potential.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/. Highlights .

*Powerful offshore storm will bring periods of rain and high winds to much of the area Thursday and Friday.

*Lingering showers on Saturday before drying out by Saturday afternoon. Sunday looks to feature mostly dry conditions with moderating temperatures.

*Seasonable conditions for first part of the work week with occasional chances for showers.

Details .

Friday .

The huge ocean storm will continue to retrograde on Friday, bringing periods of rain and high winds to much of Southern New England. This is in response to a highly amplified and blocky synoptic pattern over the higher latitudes, resulting in a deep and slow-moving 500mb trough over the Atlantic Ocean. By Friday morning, as the warm front wraps around the retrograding surface low, a northeasterly low level jet will develop and intensify to 60-65 kts at 925mb over Eastern MA. Given that Bufkit soundings show mixing up to around 900mb and momentum transfer of up to 55 kts, have gone ahead and issued High Wind Watches over the Cape and Islands. By Friday afternoon, conditions are forecast to improve slowly from west to east. There may even be enough breaks in the clouds to support temperatures in the upper 40s and lower 50s in Western MA and CT while rainy and raw conditions continue in Eastern MA and RI.

Saturday into Sunday .

A warming trend begins early Saturday as a broad 500mb ridge slowly builds in from the west. There remains questions on how quickly the aforementioned trough will be able to move out of the way. Moreover, remnant pieces of shortwave energy from the exiting trough look to linger for occasional showers and plenty of clouds.

Sunday looks to be the nicer day of the weekend as a broad surface high pressure builds in from the mid-Atlantic states, Temperatures could overperform especially near and along the CT River valley on Sunday, which looks most likely to be in the warm sector out ahead of a cold front. The ECMWF has 925mb temperatures of around +7 to +9C in Western MA and CT. Using pattern recognition, have bumped up the high temperatures on Sunday especially in Western MA and CT to mid and upper 50s. Models are also hinting at some elevated instability with about 20-25C of K Index and mid-level lapse rates of 6 to 6.5C/km. However, given we are still 4 days out and the timing of the aforementioned cold front is still in question, have only mentioned the chance of showers for late Sunday into early Monday.

Monday into Wednesday .

We remain in a broad 500mb ridge pattern for the first half of the work week so despite the passage of the weak cold front late Sunday into Monday, Monday is expected to feature above average temperatures. Normal highs for early April are generally in the lower to mid 50s. For Tuesday and Wednesday, however, enough disorganized pieces of shortwave will head our way from time to time to lend moderate confidence to the forecast at best. So have gone with a blend of guidance for this part of the forecast, which yields generally seasonable conditions and occasional showers.

AVIATION /08Z THURSDAY THROUGH MONDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

Through 12z . MVFR cigs and light rain will be confined to Cape/Islands and into SE and east coastal MA, with VFR elsewhere.

Today . Moderate confidence. MVFR cigs and rain across eastern MA will slowly move west across SNE through the day reaching CT valley mid/late afternoon. Areas of IFR developing over Cape/Islands. NNW winds gusting up to 25 kt except up to 35 kt over Cape Cod and Islands.

Tonight . Moderate confidence. Widespread MVFR in periods of rain with areas of IFR along the coast and in the high terrain. N wind gusts to 25 kt along the immediate coast and up to 35 kt over Cape/Islands, with gusts increasing to 40-45 kt toward daybreak Cape/Islands.

Friday . Moderate confidence. MVFR/IFR conditions in periods of rain. NE gusts 40-50 kt Cape/Islands and 30-40 kt east coastal MA into SE MA and coastal RI.

KBOS Terminal . Overall moderate confidence. Mainly MVFR cigs in periods of rain although can't rule out IFR later today and tonight along with vsby restrictions.

KBDL Terminal . High confidence in trends, but lower confidence on exact timing. VFR trending to MVFR later this afternoon.

Outlook /Friday Night through Monday/ .

Friday Night: MVFR/IFR conditions possible. Strong winds with gusts up to 45 kt. Chance RA.

Saturday: Mainly VFR, with local IFR possible. Windy with local gusts up to 30 kt.

Saturday Night: VFR.

Sunday: Mainly VFR, with areas MVFR possible. Slight chance RA.

Sunday Night: Mainly VFR, with local MVFR possible. Breezy. Slight chance RA.

Monday: VFR.

MARINE. Large ocean storm retrogrades back toward the eastern waters bringing strong winds and seas. Storm force gusts to 50 kt expected over eastern waters with gusts to 40 kt over RI coastal waters. Peak of the wind will be late tonight into Fri as the storm makes its closest approach. Storm warnings and gale warnings are in place. Seas will build to 20-25 ft east of Cape Cod and Nantucket. Vsbys reduced in period of rain and fog.

Outlook /Friday Night through Monday/ .

Friday: Low risk for storm force winds with gusts up to 50 kt. Rough seas up to 23 ft. Rain likely.

Friday Night: Strong winds with gusts up to 45 kt. Rough seas up to 21 ft. Chance of rain.

Saturday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 17 ft. Slight chance of rain.

Saturday Night: Winds less than 25 kt. Rough seas up to 12 ft.

Sunday: Winds less than 25 kt. Rough seas up to 10 ft.

Sunday Night: Winds less than 25 kt. Areas of rough seas. Slight chance of rain.

Monday: Winds less than 25 kt. Local rough seas.

TIDES/COASTAL FLOODING.

This morning . Current tidal departure at Nantucket is 1.8 ft. Expect a surge around 2 ft during the 730 AM high tide. This will bring the storm tide over 5 ft with areas of minor coastal flooding for Nantucket this morning.

This evening . The astronomical tide is almost 1 ft lower for the high tide tonight so not anticipating any flooding issues at Nantucket, other than minor splashover.

Friday . The main concern is the Friday morning high tide for all of east coastal MA as the core of strong winds and seas will occur around this time. A storm surge up to 3 ft is expected per Stevens Institute surge ensembles. In addition greater wave action expected as well with 20+ ft seas ocean waters east of Nantucket and Cape Cod and up to 15 ft around Boston Buoy. These dangerous seas will be long period/high energy waves. Based on forecast storm tide and wave action, widespread minor flooding expected along the entire east coast of MA, with risk for moderate flooding at Nantucket. As a result we issued a coastal flood warning for Nantucket with an advisory elsewhere along east coastal MA.

Tides are about a little less than a foot lower for the Fri evening high tide and surge and seas will also be a bit lower. As a result not expecting much flooding for the Fri evening high tide, except pockets of minor flooding are possible for Nantucket.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . Coastal Flood Advisory from 6 AM to 10 AM EDT Friday for MAZ007-015-016-019-022-023. Wind Advisory from 5 AM to 8 PM EDT Friday for MAZ007-019-021. High Wind Warning from 5 AM to 8 PM EDT Friday for MAZ022>024. Coastal Flood Warning from 6 AM to 10 AM EDT Friday for MAZ024. Coastal Flood Advisory until 10 AM EDT this morning for MAZ024. RI . None. MARINE . Storm Warning from 5 AM to 8 PM EDT Friday for ANZ231-232-250- 254-255. Gale Warning from 5 AM Friday to 2 AM EDT Saturday for ANZ233- 234. Gale Warning from 5 AM to 8 PM EDT Friday for ANZ230-236. Gale Warning from 5 AM Friday to 6 AM EDT Saturday for ANZ235- 237. Gale Warning from 3 AM Friday to 6 AM EDT Saturday for ANZ251- 256.

SYNOPSIS . KJC NEAR TERM . KJC SHORT TERM . KJC LONG TERM . Loconto/Chai AVIATION . KJC/Loconto/Chai MARINE . KJC/Loconto/Chai TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44029 - Buoy A0102 - Mass. Bay/Stellwagen 18 mi114 min N 21 G 27 40°F 42°F7 ft1000.2 hPa
IOSN3 - Isle of Shoals, NH 23 mi58 min NNW 18 G 20 40°F 1001.6 hPa (-2.4)38°F
44013 - BOSTON 16 NM East of Boston, MA 25 mi68 min NNW 19 G 25 41°F 43°F7 ft1000.9 hPa (-2.3)38°F
BHBM3 - 8443970 - Boston, MA 25 mi64 min 41°F 42°F1001.6 hPa
44073 28 mi114 min N 19 G 23 41°F 41°F
CMLN3 28 mi174 min NW 25 37°F 43°F
44098 - Jeffrey's Ledge, NH (160) 36 mi50 min 42°F9 ft
44030 - Buoy B0102 - Western Maine Shelf 41 mi114 min NNW 18 G 23 6 ft1003.5 hPa
WELM1 - 8419317 - Wells, ME 46 mi58 min N 14 G 18 40°F 41°F1002.1 hPa (-2.7)
WEXM1 - Wells Reserve, ME 48 mi58 min NW 8.9 40°F 35°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 49 mi68 min NNW 27 G 31 39°F 9 ft999.5 hPa (-2.4)35°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA8 mi65 minNNW 910.00 miLight Rain39°F35°F86%1001.9 hPa
Lawrence Municipal Airport, MA16 mi64 minNW 710.00 miOvercast40°F32°F73%1003.5 hPa
Boston, Logan International Airport, MA23 mi64 minNW 1210.00 miLight Rain39°F33°F79%1002.6 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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1 day agoN7N6N9N10N9
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E95NE64NE7E7E5CalmNW3CalmNW3NW3N4NW4NW3
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Tide / Current Tables for Plum Island Sound (south end), Massachusetts
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Plum Island Sound (south end)
Click for Map
Thu -- 12:23 AM EDT     1.59 feet Low Tide
Thu -- 03:14 AM EDT     Moonset
Thu -- 06:14 AM EDT     8.46 feet High Tide
Thu -- 06:22 AM EDT     Sunrise
Thu -- 12:34 PM EDT     Moonrise
Thu -- 01:11 PM EDT     0.77 feet Low Tide
Thu -- 07:06 PM EDT     7.56 feet High Tide
Thu -- 07:11 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.82.74.36.17.78.48.37.46.14.32.61.30.81.12.23.85.777.67.36.55.13.6

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Thu -- 01:18 AM EDT     0.00 knots Slack
Thu -- 03:15 AM EDT     Moonset
Thu -- 03:44 AM EDT     1.19 knots Max Flood
Thu -- 04:39 AM EDT     1.16 knots Min Flood
Thu -- 05:25 AM EDT     1.18 knots Max Flood
Thu -- 06:23 AM EDT     Sunrise
Thu -- 07:34 AM EDT     -0.00 knots Slack
Thu -- 10:05 AM EDT     -1.33 knots Max Ebb
Thu -- 12:34 PM EDT     Moonrise
Thu -- 02:05 PM EDT     0.00 knots Slack
Thu -- 06:05 PM EDT     1.26 knots Max Flood
Thu -- 07:11 PM EDT     Sunset
Thu -- 08:13 PM EDT     -0.00 knots Slack
Thu -- 10:34 PM EDT     -1.13 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.20.51.11.21.21.10.5-0.4-1.1-1.3-1.2-0.8-0.6-0.10.71.11.21.310.2-0.6-1.1-1.1

Weather Map
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GEOS Local Image of Northeast    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 (4,6,7,8)
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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 numerous 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.