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Marine Weather and Tides Brewster, 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.

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Sunrise 6:09AM

Sunset 7:15PM

Wednesday April 8, 2020 2:52 PM EDT (18:52 UTC)

Moonrise 8:07PM

Moonset 6:49AM

Illumination 99%

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.

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7 Day Forecast for Marine Location Near Brewster, MA

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Area Discussion for - Boston, MA

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FXUS61 KBOX 081725 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 125 PM EDT Wed Apr 8 2020

SYNOPSIS. Weak area of low pressure tracking over or just south of New England will spread a period of rain across the region this morning. As the low departs a drying trend develops this afternoon along with a few breaks of sunshine late in the day. Another system moves in Thursday, bringing more rain and scattered thunderstorms. Scattered showers are possible Thursday night through Friday. Drier weather for this weekend before our next wet weather system early next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

115 PM Update .

Rain from this morning has now pushed offshore, but with a stationary front nearby, there are plenty of clouds across the region. Per visible satellite, areas north of the MA turnpike have seen some partial clearing from W to E. Temperatures have also responded accordingly, with interior locations rising into the mid and upper 50s. Nearer to the coast, however, the offshore low has helped set up a NE flow. With the low levels adequately saturated, this has led to a push of broken marine stratus from the Gulf of Maine towards the MA South Shore. And along with the cold ocean temps, temperatures near the coast will only reach the upper 40s to low 50s.

Previous discussion .

1040 AM Update . We made two main changes to the near- term forecast. Firstly, the back edge of the main precipitation shield is moving out to sea a little faster so we adjusted the PoPs accordingly. Secondly, we bumped the temperatures up especially across interior MA and CT. There could be some breaks in the clouds for some inland locations, especially along the lower CT River valley to reach the upper 50s or even 60 late this afternoon. Otherwise, the rest of the forecast remains on track.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/. Tonight .

Weak short wave ridging provides the region with dry weather and seasonable temperatures. Given light winds and dew pts 35-40 (at or above the average nighttime lows), risk for patchy fog especially along the coast where highest dew pts will be observed.

Thursday .

Closed low just north of the Great Lakes into southern Ontario ejects a very strong short wave into New England during the afternoon. Very strong jet dynamics with this system that induces 979 mb triple pt/secondary over northeast MA around 21z Thu. Strong cyclonic curvature to the mid/upper level flow coupled with PWAT plume of 1+ inches and steep mid level lapse rates suggest a good bet for elevated convection and brief heavy showers. In fact could be a fine line of low top convection. Key for surface based convection will be how far north does warm sector track before triple pt low pinches off warm sector from advecting northward. Some of the high res guidance hint at warm sector briefly advecting into RI and eastern MA with surface temps and dew pts climbing into the 50s! Some of the guidance has trended farther north-northeast with triple pt/secondary low. This would result in warm sector surging farther north increasing the threat of strong to severe storms. SPC Day 2 forecast has also trended northward with marginal risk now into NYC area. Will just have to watch how this evolves. As of now SB instability appears to be lacking.

Breezy conditions will develop in the warm sector late Thu morning into Thu afternoon with south winds 10-15 mph gusting up to 25-35 mph at times, then abruptly shifts to the west late in the day with the FROPA.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. Highlights .

* Gusty winds, light rain, and high elevation snow on Friday with a few rumbles of thunder possible

* Potential for minor coastal flooding through early Friday around high tide across the east and south coasts of MA and RI. See the Tides and Coastal Flooding section below for more details.

* Temperatures running near to below normal through Saturday, then a warm up Sunday- Tuesday

* Rain and gusty winds return Monday

Details .

Thursday night and Friday .

By late Thursday evening/early overnight hours the cold front will have exited offshore ushering in a drier airmass and leaving clearing skies in its wake. Strong jet dynamics remain, now out of the W/NW. This brings mid level CAA and steepening lapse rates, helping to mix down a strong 40-50 kt 850 mb LLJ. The strongest winds should remain aloft during the overnight hours, but with diurnal heating on Friday and the cold pool aloft the boundary layer should mix very well all the way up to at least 750 mb. This will allow for widespread very strong wind gusts to mix down, potentially necessitating a Wind Advisory or even a High Wind Warning; 40-50 mph gusts are likely.

Even though the sfc low will be well to our north, the upper low lingers overhead keeping cyclonic flow in place with wraparound moisture and the strong LLJ. This will mean scattered rain showers, especially during the day. This as diurnal heating of the sfc together with the cold pool aloft contribute to some sfc based instability which could bring about a thunderstorms or two as well.

Saturday and Sunday .

Nice weekend in store, though Sunday looks to be the nicer of the two days (warmer with less wind). A ridge of high pressure begins to move overhead early Saturday, and this means the pressure gradient will be slowly relaxing, so winds likely remain breezy on Saturday before calming Saturday night and Sunday. Temperatures remain in the low 50s on Saturday under NW flow on the downstream side of the ridge. By Sunday though, the ridge axis approaches and SW return flow warms us up into the upper 50s. Low temperatures on Sunday morning were trended toward the colder MOS guidance to account for likely radiational cooling under clear skies and light winds . into the upper 20s and low 30s.

Monday and Tuesday .

The mild temperatures continue on Monday and Tuesday. However, it comes with the return of widespread rain. A deep mid level trough and sfc low will bring rain and gusty winds around Monday, with another potentially wet disturbance right on its heels.

AVIATION /17Z WEDNESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

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

15z update .

Today: High confidence.

VFR conditions with light NE wind. Not expecting marine stratus due to low-level dry air.

Tonight: Moderate confidence.

MVFR to IFR conditions with areas of fog developing along the south coast. Light SE wind.

Thursday . strong cold front approaches the region and sweeps thru the area late in the day. Mainly MVFR but IFR possible in hilly terrain. Widespread showers developing west to east thru the day with a fine line of low top showers/thunderstorms possible along and ahead of the front. LLWS likely given magnitude of low level southerly jet. Strong wind shift late in the day with the frontal passage from south to west.

KBOS Terminal . High confidence in the TAF.

KBDL Terminal . High confidence in the TAF.

Outlook /Thursday Night through Sunday/ .

Thursday Night: VFR. Strong winds with local gusts up to 40 kt.

Friday: VFR. Strong winds with gusts up to 45 kt. Slight chance SHRA, isolated TSRA.

Friday Night: Mainly VFR, with local MVFR possible. Windy with gusts up to 35 kt.

Saturday through Saturday Night: VFR. Breezy.

Sunday: VFR.

MARINE. 15z update . Have issued a Coastal Flood Advisory for Boston Harbor and the MA South Coast to cover the upcoming high tide cycle around local noon for possible minor flooding. All other marine headlines remain unchanged.

This afternoon . weak surface low tracks eastward to Georges Bank this afternoon. Morning rain gives way to a drying trend in the afternoon. Light SSW winds become NE this afternoon.

Tonight . Weak high pressure over the waters provides dry quiet weather.

Thursday . strong cold front sweeps across the water late Thu with widespread showers and embedded thunder likely. Strong SSW winds ahead of the front abruptly shifts to the WNW and remains strong and gusty.

Outlook /Thursday Night through Sunday/ .

Thursday Night: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 11 ft. Slight chance of rain showers.

Friday: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 12 ft. Slight chance of rain showers, isolated thunderstorms.

Friday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.

Saturday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas.

Saturday Night: Winds less than 25 kt. Seas locally approaching 5 ft.

Sunday: Winds less than 25 kt.

TIDES/COASTAL FLOODING. 4 AM Update:

Next 4 tides (Midday and midnight today and Thursday) are astronomically high and run the risk of minor coastal flooding/inundation. Midday today and then midnight tonight main risk is eastern MA and again tonight given light onshore flow. Then tomorrow with southerly surface winds risk shifts to the south coast of MA/RI.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . Coastal Flood Advisory until 8 AM EDT Friday for MAZ007-015- 016-019-022. RI . Coastal Flood Advisory from 8 PM this evening to 8 AM EDT Friday for RIZ002-004>007. MARINE . Gale Watch from Thursday afternoon through Friday evening for ANZ232-250-254-255. Gale Watch from late Thursday night through Friday evening for ANZ233>235-237-256. Gale Watch from Thursday afternoon through Friday afternoon for ANZ231-251.

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

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CHTM3	9 mi	64 min	NNE 13 G 15	46°F	50°F		999.6 hPa
44090	14 mi	22 min			44°F	2 ft
44020 - NANTUCKET SOUND	22 mi	72 min				1 ft
WAXM3 - Waquoit Bay Reserve, MA	27 mi	67 min	NW 4.1	48°F			1000 hPa	41°F
44018 - SE Cape Cod 30NM East of Nantucket, MA	30 mi	62 min	NNE 14 G 18	43°F		2 ft	1000.4 hPa (-0.0)	39°F
NTKM3 - 8449130 - Nantucket Island, MA	34 mi	52 min	NNE 5.1 G 9.9	47°F	47°F		1000.1 hPa (+0.6)
BZBM3 - 8447930 - Woods Hole, MA	36 mi	52 min		47°F	46°F		1000.5 hPa (+0.4)

Wind History for Nantucket Island, MA

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Last 24hr

W11 G18

SW9 G15

SW10 G15

SW11 G17

SW8 G14

SW7 G11

SW6 G9

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SW7 G13

SW5 G9

W3 G6

SW2

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S1

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NE6 G9

NE9 G13

NE7 G11

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1 day ago

NE7

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SW6 G9

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W4 G9

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W6 G11

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W5 G8

W9 G12

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W3 G12

W7 G15

2 days ago

N3 G7

SW5

S5 G9

SW7 G10

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S5 G8

S6 G9

SW4 G9

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S6 G11

S6 G11

SW4 G8

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W3 G6

NW5 G8

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N6 G11

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N7 G10

N8

NE5 G10

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Chatham, Chatham Municipal Airport, MA	7 mi	60 min	Var 6	10.00 mi	Overcast	50°F	39°F	68%	1000.3 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA	12 mi	56 min	N 12 G 16	10.00 mi	Overcast	49°F	41°F	74%	999.9 hPa
Provincetown Municipal Airport, MA	18 mi	56 min	N 8	10.00 mi	Overcast	46°F	43°F	89%	1001.1 hPa

Link to 5 minute data for KCQX

Wind History from CQX (wind in knots)

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SE8

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Calm

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1 day ago

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2 days ago

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SW8 G14

SW9 G16

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SW8 G15

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N7 G15

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NE9 G15

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NE9

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Tide / Current Tables for Sesuit Harbor, East Dennis, Cape Cod Bay, Massachusetts

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Tide / Current Tables for Pollock Rip Channel, Massachusetts Current

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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Boston, MA (14,3,4,5)

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Ground Weather Radar Station Boston, MA

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