Friday, April3, 2020
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Marine Weather and Tides
West Falmouth, 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 6:20AMSunset 7:12PM Friday April 3, 2020 7:36 PM EDT (23:36 UTC) Moonrise 1:47PMMoonset 3:58AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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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ANZ234 Buzzards Bay- 716 Pm Edt Fri Apr 3 2020
.gale warning in effect through Saturday morning...
Tonight..NE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 2 to 4 ft. Patchy fog. Showers likely this evening. A chance of showers after midnight. Vsby 1 nm or less.
Sat..NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers.
Sat night..NE winds 10 to 15 kt with gusts up to 20 kt, becoming N around 5 kt after midnight. Seas around 2 ft.
Sun..NW winds around 5 kt, becoming sw in the afternoon. Seas around 2 ft.
Sun night and Mon..W winds 5 to 10 kt. Seas around 2 ft.
Mon night..SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Tue and Tue night..SW winds 5 to 10 kt, becoming nw. Seas around 2 ft.
Wed and Wed night..E winds 5 to 10 kt, becoming s. Seas 2 to 4 ft. A chance of showers. 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 Pm Edt Fri Apr 3 2020
Synopsis for massachusetts and rhode island coastal waters.. Throughout the Friday afternoon our powerful ocean storm will continue to jog towards the south, away from southern new england. Winds will slowly diminish overnight, but, still strong enough to warrant gale warnings into early Saturday. Weak high pressure will then build back over the waters this 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 West Falmouth, MA
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location: 41.61, -70.72     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 032010 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 410 PM EDT Fri Apr 3 2020

SYNOPSIS. A large ocean storm has moved farther offshore to the southeast of Nantucket. This will move out to sea tonight and over the weekend. Expect diminishing wind and rain tonight and Saturday morning. A weak weather system and front will bring scattered showers Sunday afternoon and night. Unsettled conditions will return as a few fast moving systems push across the region from Tuesday night through late week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Ocean low passed southeast of Nantucket during the day, and has moved south of 40N. This low will continue to move south through midnight, then sweep east and move out to sea. Low level northeast flow continues through the night, although weaker after midnight. This should maintain low level moisture and clouds, as well as some light rain/drizzle.

Pressure gradient diminishes, especially after midnight. Expect winds to diminish tonight, but with most diminishing occuring after midnight.

One change in wind headlines. Have lowered the High Wind Warning on the North Shore, replacing it with a Wind Advisory. A High Wind Warning continues on the Cape and Islands through early tonight. The Wind Advisory continues along the remainder of the Eastern MA coast.

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

SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/. Saturday .

Upper trough moves out to sea, and high pressure ridge builds over the northeast. This will bring partial clearing during the day. Northeast winds will diminish through the day, but gusts of 25-35 kt are still possible in the morning along the coastline.

Mixing will reach 925 mb, with temperatures of 4-6C. This should support max surface temps in the mid 40s to lower 50s, with warmest temps in the CT Valley.

Saturday night .

An upper shortwave moves through the ridge, bringing an area of clouds east from NY. Not enough moisture in the column to suggest showers. Dew points will be in the 30s, suggesting min temps in the 30s and lower 40s.

LONG TERM /SUNDAY THROUGH FRIDAY/. Highlights .

* A weak disturbance and approaching cold front bring scattered light showers Sunday into Sunday night

* Dry, warmer than average conditions return Monday, cooling through late week

* Generally dry through mid week but a few weak systems may bring scattered showers at times, then more widespread rain chances around Wed/Thursday

Details .

Sunday .

A suppressed ridge of high pressure crosses the region on Sunday bringing a welcomed warm-up as sfc winds turn out of the southwest. Enough moisture will linger in the low levels that sun should still be filtered by clouds, but more sun than Saturday. With weak warm advection and some sun, temperatures should peak somewhat above normal, in the mid to upper 50s. Fortunately for those along the east coast where NE winds have kept them much cooler the last few days, SW flow will allow these locations to warm up along with the interior locations. Mid and upper clouds will increase by afternoon/evening as aloft we see a shortwave moving through the upper flow and sfc trough digging into northern New England. The bulk of the best forcing/dynamics remains well to our north, and so does most of the rain. However, there should be enough forcing ahead of the cold front and marginal PVA at the mid levels to force some showers over the higher terrain of western MA/CT in the afternoon/early evening. These will spread east and diminish as they do, into the overnight hours. QPF will be very light.

Monday .

Hard to complain about the weather on Monday when skies will clear and temperatures spike into the 60s with light winds. This thanks to an area of high pressure which moves in behind that trough. Temperatures at 925 mb push up to 7C . similar to Sunday for areas of western MA/CT but with full sunshine this should push temps several degrees higher. Again, offshore winds will allow east coastal MA to also enjoy the warm-up.

Tuesday through Friday .

Confidence in specifics for later in the week is rather moderate to low, with large model solution spread. General consensus is that a low pressure spinning over eastern Canada will bring a shortwave rotating through the trough over our area bringing another shot of rain around Tuesday night/Wednesday. Then we'll likely have a break on Thursday and another frontal system for late in the week. Timing of each of these disturbances will be refined as they approach.

AVIATION /20Z FRIDAY THROUGH WEDNESDAY/. Forecaster Confidence Levels .

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

Tonight . Moderate confidence.

Northeast wind with gusts 30 to 40 kt before midnight along the coast, diminishing after midnight. Scattered showers diminish in coverage through the night. MVFR ceilings and mixed MVFR/IFR vsbys through early night, then MVFR ceilings/vsbys after midnight.

Saturday . High confidence.

MVFR ceilings at the start, but improving to VFR as partial clearing moves south into the region. A few showers in Eastern MA first thing in the morning may bring MVFR vsbys, but these should dissipate during the morning. Northeast winds 25 to 35 kt along the coast in the morning will diminish to 20 kt or less by late afternoon.

Saturday night . High confidence.

Primarily VFR, but with a chance of MVFR ceilings in Western MA/CT overnight. Light winds.

KBOS Terminal . Moderate confidence. MVFR ceilings bordering on IFR ceilings. Vsbys IFR in showers/drizzle/fog early, improving to MVFR during the night. Northeast gusts 35 to 40 kt early tonight, diminishing to 25 kt after midnight.

KBDL Terminal . Moderate confidence. MVFR ceilings much of the night, improving to VFR on Saturday. Vsbys mainly VFR, but occasional MVFR in showers.

Outlook /Sunday through Wednesday/ .

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

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

Monday: VFR. Breezy.

Monday Night through Tuesday: VFR.

Tuesday Night: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA.

Wednesday: Mainly VFR, with local IFR possible. Breezy. Chance SHRA.

MARINE. Winds gusting 35 to 50 kt this evening, then diminishing overnight. Seas 15-25 feet early will subside to 10-15 feet by late night. Northeast winds will diminish below 25 kt by Saturday afternoon, while seas will diminish to 5-8 feet Saturday night.

Storm warnings have been dropped based on observations. Gale Warnings have replaced the storms. Gales continue on all other waters. Winds gradually diminish this evening through Saturday but it will be a slow process. Gales drop to Small Crafts during the night and on Saturday. Small Crafts will linger Saturday night due to rough seas on some of the waters.

Outlook /Sunday through Wednesday/ .

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

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

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

Monday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.

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

Tuesday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.

Wednesday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.

TIDES/COASTAL FLOODING. Tonight .

Current tidal departure at Nantucket is 2.6 ft. Expect water levels to slowly recede as the ocean system moves southward. Still anticipate minor coastal flooding across Cape Cod Bay, Nantucket and Marthas Vineyard due to the elevated water levels coupled with heightened sea levels and high tide tonight.

Still heavily utilizing the Stevens Institute ensemble surge guidance SNAP-Ex as it is pretty much spot on with surge values compared to the observations. This shows values diminishing to to 2- 2.5 ft during tonight's high tide. This brings the total water level to just below 5 ft, but waves will be around 7 ft which will be sufficient for minor flooding in Nantucket.

Marthas Vineyard will see slightly lower total water levels with values topping out around 4 ft, and waves around 4-5 ft. This puts Vineyard Haven on borderline minor flooding, but given the prolonged northeasterly winds and water moving in opted to include Vineyard Haven in the advisory.

Confidence moderate in coastal flooding for Cape Cod Bay, but the thinking is that water levels will remain elevated within the bowl due to prolonged winds and waves moving in from the northeast. Still expecting levels to recede, but will be more gradual compared to other locations. Total Water Levels will roughly be between 10-14 ft and couple with waves around 9-15 feet on the western side of the bay, while the eastern side sees seas roughly of 4-9 feet. This may bring some impacts to Sandwich Harbor and Dennis, but confidence is lower here in comparison to Vineyard Haven and Nantucket.

Saturday .

A Coastal Flood Advisory may be needed for Nantucket for tomorrow mornings high tide. Water levels remain elevated and will couple with wave heights around 6 ft. This again should be sufficient for minor flooding.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . Wind Advisory until 10 PM EDT this evening for MAZ007-015-016- 018-019-021. High Wind Warning until 10 PM EDT this evening for MAZ022>024. Coastal Flood Advisory until 11 PM EDT this evening for MAZ022>024. RI . None. MARINE . Gale Warning until 11 AM EDT Saturday for ANZ232. Gale Warning until 9 AM EDT Saturday for ANZ233>235-237-251- 256. Gale Warning until 5 AM EDT Saturday for ANZ230. Gale Warning until noon EDT Saturday for ANZ231-250-254-255. Gale Warning until 10 PM EDT this evening for ANZ236.

SYNOPSIS . WTB/BW NEAR TERM . WTB SHORT TERM . WTB LONG TERM . BW AVIATION . WTB/BW MARINE . WTB/BL/BW TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BZBM3 - 8447930 - Woods Hole, MA 6 mi49 min 44°F 44°F1004.5 hPa
WAXM3 - Waquoit Bay Reserve, MA 11 mi112 min NW 6 43°F 1003 hPa43°F
BUZM3 - Buzzards Bay, MA 22 mi37 min NNE 35 G 37 1004.1 hPa (+3.5)
FRVM3 - 8447386 - Fall River, MA 24 mi49 min 44°F 44°F1006.5 hPa
FRXM3 25 mi49 min 44°F 43°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 25 mi49 min NNE 21 G 28 45°F 1006.1 hPa
44020 - NANTUCKET SOUND 25 mi57 min 6 ft
44090 26 mi37 min 43°F8 ft
PRUR1 31 mi49 min 45°F 43°F
NAXR1 - Narragansett Bay Reserve, RI 33 mi112 min NE 29 44°F 1005 hPa43°F
NWPR1 - 8452660 - Newport, RI 33 mi49 min NNE 17 G 23 44°F 39°F1005.6 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 33 mi49 min NE 21 G 31 44°F 1006.6 hPa
CPTR1 - 8452944 - Conimicut Light, RI 34 mi49 min 44°F 45°F1006.6 hPa
QPTR1 - 8454049 - Quonset Point, RI 36 mi49 min NNE 27 G 32 45°F 45°F1006.1 hPa
PVDR1 37 mi49 min NNE 17 G 27 46°F 1007.4 hPa43°F
FOXR1 - 8454000 - Providence, RI 39 mi55 min ENE 9.9 G 18 45°F 42°F1007.3 hPa
NTKM3 - 8449130 - Nantucket Island, MA 40 mi49 min NNE 24 G 35 42°F 44°F1003.1 hPa
CHTM3 41 mi67 min NE 31 G 39 44°F 48°F1003.5 hPa
44097 - Block Island, RI (154) 49 mi37 min 43°F10 ft

Wind History for Borden Flats Light at Fall River, MA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Otis Air National Guard Base, MA11 mi52 minNNE 26 G 331.00 miLight Drizzle and Windy43°F42°F100%1004.7 hPa
New Bedford, New Bedford Regional Airport, MA14 mi44 minNNE 9 G 231.50 miLight Rain Fog/Mist43°F43°F100%1005.8 hPa
Marthas Vineyard Airport, MA15 mi44 minNNE 18 G 292.50 miLight Rain Fog/Mist and Breezy44°F42°F93%1003.7 hPa
Plymouth, Plymouth Municipal Airport, MA21 mi45 minNNE 20 G 311.75 miLight Rain Fog/Mist and Breezy43°F41°F93%1006.1 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA24 mi41 minNNE 17 G 272.00 miLight Rain Fog/Mist45°F41°F86%1003.8 hPa

Link to 5 minute data for KFMH

Wind History from FMH (wind in knots)
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1 day agoN15
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2 days ago--NE6NE6NE4CalmCalmCalm--CalmCalmN7N3NE8
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Tide / Current Tables for Chappaquoit Point, West Falmouth Harbor, Buzzards Bay, Massachusetts
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Chappaquoit Point
Click for Map
Fri -- 03:57 AM EDT     Moonset
Fri -- 04:29 AM EDT     3.75 feet High Tide
Fri -- 06:21 AM EDT     Sunrise
Fri -- 10:18 AM EDT     0.23 feet Low Tide
Fri -- 01:46 PM EDT     Moonrise
Fri -- 05:01 PM EDT     3.55 feet High Tide
Fri -- 07:10 PM EDT     Sunset
Fri -- 10:40 PM EDT     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.82.53.23.73.73.12.21.30.60.20.30.61.11.82.53.23.53.32.51.50.70.20.1

Tide / Current Tables for Woods Hole, Massachusetts Current (use with caution)
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Woods Hole
Click for Map
Fri -- 12:16 AM EDT     0.14 knots Slack
Fri -- 03:57 AM EDT     Moonset
Fri -- 04:38 AM EDT     2.73 knots Max Flood
Fri -- 06:21 AM EDT     Sunrise
Fri -- 07:01 AM EDT     -0.04 knots Slack
Fri -- 09:36 AM EDT     -3.38 knots Max Ebb
Fri -- 12:49 PM EDT     0.15 knots Slack
Fri -- 01:46 PM EDT     Moonrise
Fri -- 05:13 PM EDT     3.25 knots Max Flood
Fri -- 07:10 PM EDT     Sunset
Fri -- 07:53 PM EDT     -0.08 knots Slack
Fri -- 10:12 PM EDT     -3.23 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.81.31.92.42.72.72.30.5-2.4-3.3-3.3-2.8-1.70.81.92.533.23.12.4-0.8-2.7-3.2-3

Weather Map
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GEOS 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 (19,4,5,8)
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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.