Saturday, September19, 2020
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Marine Weather and Tides
Pocasset, MA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:27AMSunset 6:46PM Saturday September 19, 2020 1:45 PM EDT (17:45 UTC) Moonrise 8:54AMMoonset 8:22PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 117 Pm Edt Sat Sep 19 2020
.small craft advisory in effect through Sunday evening...
This afternoon..NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Tonight..N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Sun..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Sun night..NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft.
Mon..NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft.
Mon night..N winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Tue and Tue night..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Wed and Wed night..W winds 5 to 10 kt. Gusts up to 20 kt. Seas 2 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 116 Pm Edt Sat Sep 19 2020
Synopsis for massachusetts and rhode island coastal waters.. Gusty nne winds and rough seas will continue today and tomorrow. Hurricane teddy will move north and pass well east of southern new england Mon into Tue. Teddy will bring the potential for gale force nne wind gusts as well as very high seas on the order of 12 to 17 feet across our eastern waters. Mariners are urged to keep up to date with the latest forecasts as this has the potential to be a very dangerous situation for mariners, especially east of the provincetown to nantucket areas. Winds and seas will diminish Wed as teddy continues to lift north through the canadian maritimes. Further improvement is expected by Thu as a weak ridge of high pressure builds in from the west. 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 Pocasset, MA
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location: 41.68, -70.62     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 191430 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1030 AM EDT Sat Sep 19 2020

SYNOPSIS.

Unseasonably cool and dry conditions persist into early next week. Hurricane Teddy will lift north and pass well east of our region Monday into Tuesday before moving into the Canadian Maritimes. The only impacts for southern New England will be high surf and pockets of minor coastal flooding/beach erosion, but dry weather will persist. Temperatures moderate to near or above normal level for the middle and end of next week. The other main story will be the continuation of prolonged dry weather through most if not the entire week.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

1025 AM Update .

Bumped up high temperatures slightly based on observations. May be just a touch too cool for this afternoon. Could see a few spots that get into the mid to upper 60s along the south coast. Remainder of the forecast is on track.

725 AM Update .

* Chilly day despite plentiful sunshine.

* High Surf Advisory posted for most coastlines through Monday.

After a chilly night with first frost of the season for some, an unseasonably cool day is in store. It will be less windy than on Friday though, as surface high pressure moves overhead. 850mb temperatures fall to between -1C and +1C, which will only support highs mainly in the lower to middle 60s despite plentiful sunshine.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/.

Tonight:

* Freeze headlines likely needed for the East Slopes of the Berkshires tonight. Frost headlines elsewhere away from the immediate coast.

Surface high pressure moving overhead combined with dew points falling into the 20s will make for the coldest night of the season so far. A combination of a very dry air mass (PWATs less than 0.25 inches) and winds decoupling will allow temperatures to fall into the upper 20s to low 30s for the usual cold spots and mid to upper 30s elsewhere except for 40s on the immediate coast. Record minimum daily lows could be challenged. See the Climate section for more details. Note that it will remain breezy along the coast throughout the night due to pressure difference between a 1035mb high over Quebec and Hurricane Teddy approaching Bermuda.

Sunday:

* Chilly day with many locations not getting out of the 50s on the last full day of astronomical summer.

As surface flow turns northeast, the large temperature difference between the top of the boundary layer (+2C at 925mb) and the SST (around +18C near Massachusetts Bay) will help with vertical mixing and development of ocean-effect clouds over parts of Eastern MA and RI. How far inland the clouds spill inland remains to be refined but we have high confidence in widespread highs in the mid to upper 50s, which are more typical for late October! In other words, a real shot of fall for the last full day of astronomical summer. Normal highs for mid September are in the low to mid 70s. See the Climate section for the record minimum highs that could be challenged.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/.

Highlights .

* Hurricane Teddy passes well to our east Mon into Tue limiting impacts to high surf & minor coastal flooding/beach erosion

* Below normal temperatures to start off the week moderate to near or above normal levels by the middle to end of the week

* Prolonged period of dry weather will continue through at most if not all of next week

Details .

Monday and Tuesday .

The main focus Mon into Tue will be Hurricane Teddy that will pass well east of southern New England. Model consensus continues to favor the track too far east to bring any rainfall to southern New England. Low risk that a few showers briefly back onto the coast, but even if this were to any rainfall would be light and short-lived. Strong high pressure centered over northern New England will bring persistent gusty NNE winds along the coast and especially the Cape/Islands. The result will be continued high surf and pockets of minor coastal flooding/beach erosion during the times of high tide through Tuesday. Please see that specific section for more details.

We probably will be dealing with more frost/freeze conditions in the normally coolest outlying locations Sun night. High temps on Mon will be mainly be in the lower to middle 60s, but parts of the immediate coast may struggle to reach 60. High temperatures should modify into the middle to upper 60s by Tue.

Wednesday through Friday .

Hurricane Teddy will have lifted into the Canadian Maritimes by the middle of next week. The result will be more of a westerly flow of air aloft and at the surface, allowing for moderating temperatures. Highs should be well into the 70s and perhaps near or above 80 in some locations Thu and Fri depending on the timing of our next cold front.

Besides temps moderating to near or above normal thresholds over this time, the main story will be the continuation of prolonged dry weather. Perhaps a few brief showers sometime Thu night/Fri with a cold front, but even if that occurs instability/forcing appears quite limited so any rainfall would probably be short- live and rather light.

AVIATION /15Z SATURDAY THROUGH WEDNESDAY/.

Forecaster Confidence Levels .

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

12Z TAF Update .

Today: High confidence.

VFR conditions. N winds 10 to 15 kts for interior terminals with gusts 15 to 20 kts. NNE winds 10 to 20 kts with gusts up to 30 knots for the southeast New England coast and perhaps near 35 knots for ACK.

Tonight: High confidence.

VFR conditions. Light N winds across the interior, but gusts of N-NE wind gusts of 20 to 25 knots will persist across the Cape and Islands.

Sunday: High confidence.

VFR conditions for mos interior terminals. MVFR to low VFR conditions develop after 15z due to development of ocean-effect clouds for the Cape terminals, and possibly as far north as BOS and as far west as PVD. N winds turning NE at 5 to 10 kts for interior terminals and NE winds 15 to 20 kts with gusts up 25 to 35 kts for coastal terminals.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF.

Outlook /Sunday Night through Wednesday/ .

Sunday Night: VFR. Windy with local gusts up to 30 kt along the southeast New England coast.

Monday through Tuesday: VFR. Windy with gusts up to 35 kt across the southeast New England coast.

Tuesday Night: VFR. Windy with local gusts up to 30 kt.

Wednesday: VFR. Breezy.

MARINE.

Gale Warnings continue through this afternoon for the waters of Cape Cod and the Islands. Small Craft Advisories continue for all other waters for the entire weekend due to gusty NNE winds of up to 30 kts and rough seas of 6 to 10 ft. There could be a brief period late tonight and early Sunday when conditions drop below Small Craft criteria as post TC Sally departs and Hurricane Teddy moves north but expect rough seas and gusty winds for much of the weekend.

Outlook /Sunday Night through Wednesday/ .

* Distant Hurricane Teddy may still bring dangerously high seas and Gale Force Wind Gusts Mon into Tue

The main concern will be Hurricane Teddy passing well east of our waters Mon into Tue. Nonetheless, very high seas on the order of 12 to 17 feet will likely develop across our eastern waters along with a period of Northerly Gale Force Wind gusts.

FIRE WEATHER.

* A Special Weather Statement is in effect for elevated fire weather potential this weekend.

With minimum RH falling to between 20 to 35 percent for many locations away from the immediate coast, as well as gusty northerly winds, there will be elevated fire weather potential today. The potential is exacerbated by the prolonged dry weather across southern New England.

TIDES/COASTAL FLOODING.

Large high pressure over eastern Canada/northern New England will generate gusty NE winds and rough seas across our waters this weekend.

This high pressure system will then combined with Hurricane Teddy passing well east of our region Monday and Tuesday. The end result will be for continued gusty N-NE winds and offshore seas building to between 12 and 17 feet across our eastern waters.

Given this setup we have issued a High Surf Advisory through Monday for ocean exposed beaches. This will likely need to be extended into Tuesday with later forecasts. High surf/Dangerous rip currents are anticipated.

In addition, we are in a period of high astronomical tides into early next week generally between 11.6 and 11.8 MLLW in Boston. This coupled with persistent gusty NE winds and high seas will lead to pockets of minor coastal flooding/beach erosion. We opted to issue a Coastal Flood Statement for today/s midday high tide mainly for some minor splash over along the eastern MA coast. We think Sun and especially Mon/Tue have a greater risk for pockets of minor coastal flooding/beach erosion during the high tide cycle given very high sea offshore. We could see a 0.5 to 1.5 feet of storm surge with a low risk for up to 2 feet on Tue depending on the timing of the strongest winds. Coastal Flood Advisories will likely be needed, but fortunately significant coastal flooding is not expected.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . High Surf Advisory until 8 PM EDT Monday for MAZ007-019-020- 022>024. RI . High Surf Advisory until 8 PM EDT Monday for RIZ006>008. MARINE . Gale Warning until 4 PM EDT this afternoon for ANZ232-254-255. Small Craft Advisory until 8 PM EDT Sunday for ANZ231-233>235- 237-250-251-256.

SYNOPSIS . Frank/BL/Chai NEAR TERM . Frank/BL/Chai SHORT TERM . Chai LONG TERM . Frank AVIATION . Frank/Chai MARINE . Frank/Chai FIRE WEATHER . TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WAXM3 - Waquoit Bay Reserve, MA 8 mi61 min NW 5.1 59°F 1025 hPa35°F
BZBM3 - 8447930 - Woods Hole, MA 11 mi52 min 59°F 68°F1025.4 hPa
44090 19 mi49 min 63°F4 ft
44020 - NANTUCKET SOUND 22 mi36 min N 19 G 25
FRVM3 - 8447386 - Fall River, MA 29 mi52 min 61°F 68°F1026.1 hPa
BUZM3 - Buzzards Bay, MA 29 mi46 min NNE 15 G 18 1026.2 hPa (+0.5)
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 29 mi52 min NNE 16 G 20 61°F 1025.9 hPa
FRXM3 30 mi52 min 59°F 35°F
CHTM3 36 mi52 min NNE 19 G 25 57°F 60°F1024.9 hPa
PRUR1 37 mi52 min 60°F 31°F
NAXR1 - Narragansett Bay Reserve, RI 38 mi61 min NE 11 63°F 1026 hPa37°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 38 mi52 min NE 8.9 G 16 61°F 1026.4 hPa
CPTR1 - 8452944 - Conimicut Light, RI 39 mi52 min 59°F 67°F1025.9 hPa
NTKM3 - 8449130 - Nantucket Island, MA 39 mi52 min NNE 14 G 19 59°F 65°F1024.8 hPa
NWPR1 - 8452660 - Newport, RI 39 mi52 min N 11 G 13 59°F 66°F1025.6 hPa
PVDR1 41 mi52 min NNE 6 G 9.9 63°F 1026.1 hPa29°F
FOXR1 - 8454000 - Providence, RI 42 mi52 min ENE 11 G 14 59°F 66°F1026 hPa
QPTR1 - 8454049 - Quonset Point, RI 42 mi52 min NNE 12 G 17 58°F 67°F1026 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 44 mi56 min N 18 G 21 55°F 6 ft1025.4 hPa (+0.7)32°F
44013 - BOSTON 16 NM East of Boston, MA 46 mi56 min NNE 14 G 18 55°F 62°F6 ft1025.2 hPa (+0.5)37°F

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Otis Air National Guard Base, MA5 mi61 minNNE 1610.00 miFair59°F33°F39%1025.4 hPa
Plymouth, Plymouth Municipal Airport, MA17 mi54 minN 15 G 2110.00 miMostly Cloudy57°F35°F44%1025.8 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA18 mi50 minNNE 15 G 2410.00 miFair61°F33°F35%1024.5 hPa
New Bedford, New Bedford Regional Airport, MA19 mi53 minN 10 G 2110.00 miFair61°F34°F36%1025.4 hPa
Marthas Vineyard Airport, MA19 mi53 minNNE 15 G 2210.00 miFair62°F34°F35%1025 hPa

Link to 5 minute data for KFMH

Wind History from FMH (wind in knots)
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SW5W5W4CalmCalmCalmCalmCalmCalmNE5N5NE9NE14
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G17

Tide / Current Tables for Barlows Landing, Pocasset Harbor, Buzzards Bay, Massachusetts
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Barlows Landing
Click for Map
Sat -- 03:25 AM EDT     -0.82 feet Low Tide
Sat -- 06:27 AM EDT     Sunrise
Sat -- 08:54 AM EDT     Moonrise
Sat -- 10:12 AM EDT     5.63 feet High Tide
Sat -- 03:58 PM EDT     -0.72 feet Low Tide
Sat -- 06:44 PM EDT     Sunset
Sat -- 08:22 PM EDT     Moonset
Sat -- 10:36 PM EDT     5.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.11.4-0-0.8-0.7-0.112.33.855.65.34.12.40.7-0.4-0.7-0.40.41.52.84.14.95

Tide / Current Tables for Cape Cod Canal, Massachusetts Current
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Cape Cod Canal
Click for Map
Sat -- 02:08 AM EDT     -5.15 knots Max Ebb
Sat -- 05:15 AM EDT     0.23 knots Slack
Sat -- 06:27 AM EDT     Sunrise
Sat -- 08:18 AM EDT     4.93 knots Max Flood
Sat -- 08:54 AM EDT     Moonrise
Sat -- 11:39 AM EDT     -0.20 knots Slack
Sat -- 02:34 PM EDT     -5.02 knots Max Ebb
Sat -- 05:35 PM EDT     0.17 knots Slack
Sat -- 06:44 PM EDT     Sunset
Sat -- 08:22 PM EDT     Moonset
Sat -- 08:37 PM EDT     4.87 knots Max Flood
Sat -- 11:55 PM EDT     -0.13 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-3.3-4.6-5.1-4.9-3.9-1.834.44.94.84.12.7-2.1-4-4.9-4.9-4.2-2.72.244.74.84.33.2

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.