Saturday, January25, 2020
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Marine Weather and Tides
North Eastham, 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 6:57AMSunset 4:48PM Saturday January 25, 2020 2:22 AM EST (07:22 UTC) Moonrise 8:41AMMoonset 6:32PM Illumination 0% Phase: New Moon; Moon at 0 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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ANZ231 Cape Cod Bay- 116 Am Est Sat Jan 25 2020
.gale watch in effect from this evening through late tonight...
Rest of tonight..E winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft.
Sat..E winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. A chance of rain.
Sat night..SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 2 to 4 ft. Patchy fog. Showers. Vsby 1 nm or less.
Sun..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Sun night and Mon..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Mon night..NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft.
Tue through Wed night..N winds 5 to 10 kt. Seas 2 to 3 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 116 Am Est Sat Jan 25 2020
Synopsis for massachusetts and rhode island coastal waters.. High pres builds over the maritimes through tonight. Low pres will move ne from the mid atlc region Sat, tracking across southern new eng Sat night then into maine on Sun. The low pres will move into the maritimes Mon into Tue. 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 CDP, MA
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location: 41.92, -70.03     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 250557 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1257 AM EST Sat Jan 25 2020

SYNOPSIS. High pressure over the Maritimes brings dry weather to New England tonight and Saturday morning. Low pressure over the Midwest redevelops over the Mid Atlantic states. This will bring a period of heavy rain and gusty coastal winds late Saturday and Saturday night as it tracks across interior southern New England. It may be preceded by some light freezing drizzle over the Berkshires. Mainly dry and mild conditions return Sunday then dry and seasonable for much of next week.

NEAR TERM /UNTIL 6 AM THIS MORNING/. 915 PM update .

Ocean stratus has overspread much of eastern and central MA into northern RI. With continued easterly flow expect the low clouds to fill in across western MA and northern CT overnight per HREF solution which indicates high probs of low cigs overnight. Some patchy fog will also develop. Still a low risk for patchy drizzle/freezing drizzle late tonight over upslope areas, but most areas will remain dry. Temps not expected to fall much from current readings and some locations may see temp increases. Lows generally upper 20s to mid 30s.

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SUNDAY/. Closed upper low over the Great Lakes with a 100-kt southern jet feeding in. This will generate a secondary low during the night that moves up over our area late Saturday and Saturday night. Low level wind forecasts show a 50-60 kt low level jet moving up over New York City early afternoon and along the South Coast of New England late afternoon and early night.

The combination of these two jets will generate strong lift over Southern New England during the late afternoon and early night. This will generate rain from mid afternoon through around midnight. PW values of 0.75 to 1.0 inches suggest some heavy showers. The PW values are above normal for January, but the system is moving fast enough to limit any flooding threat to urban/poor drainage concerns. The rain tapers off a little before midnight in the west and a little after midnight in the east.

That low level jet moves over the region early Saturday night. The low level inversion will limit the amount of wind to reach the surface, but gusts of 25-35 kt should be possible especially along the South Coast and Islands. Winds will diminish after midnight as the system moves past.

A 1 to 2 ft surge is expected along the south coast around the high tide Sat evening as the low level jet is moving through. Astronomical tides are rather low and no coastal flooding is expected.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. Highlights .

* Temperatures slowly trending downward through the extended.

* Dry and quiet through the extended. The only exception is across the eastern slopes of the Berkshires Sunday into late on Monday where light scattered rain and snow showers are possible.

Details .

Sunday AM through Tuesday AM .

Initially a cutoff low will be situated over the eastern Great Lakes. The cutoff will gradually rotate northeastward into northern New England by Sunday evening. Expect -5 to -8 degree Celsius westerly cold air to advect in. Will see a mixture of sunshine and clouds across the region on Sunday. There are chances of light rain and snow showers across the eastern slopes of the Berkshires. Little to no snowfall accumulation is anticipated. Temperatures will be slightly warmer when compared to Saturday. Readings range from the mid 30s across the Berkshires to the mid to upper 40s along the coast.

The cutoff low will rotate across northern New England on Monday. A shortwave will rotate from the eastern Great Lakes late on Sunday through southern New England on Monday. Winds will shift to the northwest and continue advecting cold air into the region. Increased cloud cover a bit compared to the previous forecast. There will be chances of snow showers across the eastern slopes of the Berkshires. Suspect that these chances could linger further east as suggested by several GEFS members, especially during the day time. The combination of the shortwave sliding through, cold air advection and diurnal heating could bring scattered shower activity. Confidence is low to moderate at this point in time, so have kept things dry at this point in time. Temperatures on Monday range from the low 30s across the Berkshires to the low to mid 40s along the coast.

Tuesday through Friday .

Confidence in the forecast significantly lowers Tuesday until the end of the long term. Model guidance is all over the place with several shortwaves sliding through with large differences between individual models and run to run differences. At this point in time it appears that we will remain dry, but under cyclonic flow aloft. Temperatures should continue trending downward as colder air advects in.

Next shot for precipitation is late in the week and heading into the weekend. High temperatures cool to the 30s by the end of the extended. Low temperatures cool to the teens and 20s above zero.

AVIATION /06Z SATURDAY THROUGH WEDNESDAY/. Forecaster Confidence Levels .

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

Short Term /through Sunday/ .

Through tonight . Moderate confidence. Widespread MVFR with areas of IFR today. Patchy drizzle or perhaps some freezing drizzle over the higher elevations this morning. A period of moderate to heavy rainfall moves across western New Eng 21-00z and across eastern New Eng 00-04z. Widespread IFR with areas of LIFR as heavier rainfall moves through. Rain ends 03-06z from west to east, but areas of IFR/LIFR stratus and fog persists overnight. E winds gusts 25-30 kt along the coast this afternoon peaking around 35 kt this evening, then diminishing and becoming SW overnight. A brief period of LLWS in eastern New Eng this evening as low level jet moves through.

Sunday . Moderate confidence. Areas of MVFR cigs lingering in the morning in the east, otherwise VFR. West winds gusting to 20 kt.

KBOS Terminal . Moderate confidence. A period of moderate to heavy rainfall this evening with IFR/LIFR conditions. E gusts peaking around 30 kt this evening.

KBDL Terminal . Moderate confidence. A period of moderate to heavy rainfall late afternoon/early evening with IFR/LIFR conditions.

Outlook /Sunday night through Monday/ .

Sunday Night through Monday: Mainly VFR, with local MVFR possible. Breezy.

Monday Night through Tuesday: VFR. Breezy.

MARINE. Short Term /through Sunday/ . High confidence.

Northeast wind around 10 kt tonight will increase to 20-25 kt by late Saturday and early Saturday night. Wind gusts will be 30-40 kt at that time. Strongest gusts will be on the eastern MA waters. Winds then diminish after midnight as the weather system moves past. Winds at that time will shift out of the southwest.

Gale Watch continues on the waters east of Massachusetts for Saturday and Saturday night. Small Craft Advisory continues on all other waters through Sunday.

Outlook /Sunday Night through Wednesday/ .

Sunday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 11 ft.

Sunday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 9 ft.

Monday: Winds less than 25 kt. Areas of rough seas.

Monday Night: Winds less than 25 kt. Seas up to 5 ft.

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory from noon today to 7 PM EST Sunday for ANZ232. Small Craft Advisory from noon today to 1 AM EST Sunday for ANZ233-234. Small Craft Advisory from 3 PM this afternoon to 5 AM EST Sunday for ANZ230. Gale Watch from this evening through late tonight for ANZ231- 251. Small Craft Advisory from noon today to 11 AM EST Sunday for ANZ236. Small Craft Advisory from 7 AM this morning to 7 PM EST Sunday for ANZ235-237. Gale Watch from this evening through late tonight for ANZ250- 254. Small Craft Advisory from 4 AM early this morning to 7 PM EST Sunday for ANZ255-256.

SYNOPSIS . WTB NEAR TERM . KJC SHORT TERM . WTB LONG TERM . BL AVIATION . KJC/BL MARINE . WTB/BL


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44090 17 mi52 min 39°F1 ft
44018 - SE Cape Cod 30NM East of Nantucket, MA 21 mi92 min E 12 G 16 42°F 4 ft1027.6 hPa (-1.3)32°F
44020 - NANTUCKET SOUND 32 mi42 min 9.7 G 12 1026.4 hPa
WAXM3 - Waquoit Bay Reserve, MA 35 mi97 min NE 1.9 38°F 1027 hPa37°F
44013 - BOSTON 16 NM East of Boston, MA 44 mi92 min E 9.7 G 12 42°F 43°F3 ft1027.2 hPa (-1.6)37°F
BZBM3 - 8447930 - Woods Hole, MA 44 mi52 min 39°F 38°F1026.3 hPa
NTKM3 - 8449130 - Nantucket Island, MA 44 mi52 min ENE 6 G 8 38°F 37°F1026.2 hPa

Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Provincetown Municipal Airport, MA11 mi26 minE 510.00 miOvercast39°F35°F86%1027.7 hPa
Chatham, Chatham Municipal Airport, MA15 mi30 minE 510.00 miFair40°F36°F86%1027.3 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA21 mi26 minNE 410.00 miFair33°F28°F85%1026.2 hPa

Link to 5 minute data for KPVC

Wind History from PVC (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmNE3NE5NE7NE5NE5NE5E7E3SE3E4E5E5E4E5E5E9E5
1 day agoSW6SW9SW8SW8SW9SW12SW12SW14SW14SW11SW12SW10SW9S7SW7SW8S7SW8S6SW7S6SW5SW5W5
2 days agoW3NW5CalmCalmCalmW3W7W5W6W6SW7W5CalmS3CalmS3S3S5S6SW6SW8SW9SW8SW6

Tide / Current Tables for Wellfleet, Massachusetts
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Wellfleet
Click for Map
Sat -- 05:39 AM EST     0.62 feet Low Tide
Sat -- 06:59 AM EST     Sunrise
Sat -- 07:41 AM EST     Moonrise
Sat -- 11:38 AM EST     11.09 feet High Tide
Sat -- 04:45 PM EST     Sunset
Sat -- 05:32 PM EST     Moonset
Sat -- 06:17 PM EST     -0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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9.68.774.92.50.90.71.93.96.69.210.81110.18.35.93.20.8-0.4-01.43.76.48.6

Tide / Current Tables for Cape Cod Lighthouse, SE of, Cape Cod, Massachusetts
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Cape Cod Lighthouse
Click for Map
Sat -- 05:20 AM EST     0.47 feet Low Tide
Sat -- 06:59 AM EST     Sunrise
Sat -- 07:41 AM EST     Moonrise
Sat -- 11:36 AM EST     8.45 feet High Tide
Sat -- 04:45 PM EST     Sunset
Sat -- 05:32 PM EST     Moonset
Sat -- 05:58 PM EST     -0.32 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.36.55.13.31.60.50.71.83.45.37.28.38.47.66.14.120.3-0.30.21.43.25.16.7

Weather Map
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wmap_A
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (2,6,7,8)
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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 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.