Wednesday, September23, 2020
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Marine Weather and Tides
Danvers, 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 6:31AMSunset 6:40PM Wednesday September 23, 2020 2:59 PM EDT (18:59 UTC) Moonrise 1:54PMMoonset 11:01PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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- 116 Pm Edt Wed Sep 23 2020
.small craft advisory in effect until 8 pm edt this evening...
This afternoon..W winds around 10 kt with gusts up to 20 kt. Seas 4 to 7 ft.
Tonight..W winds around 10 kt. Seas 3 to 5 ft.
Thu..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 2 to 3 ft.
Thu night..SW winds 5 to 10 kt. Seas around 2 ft.
Fri and Fri night..SW winds 5 to 10 kt. Seas around 2 ft.
Sat and Sat night..S winds 10 to 15 kt. Seas around 2 ft.
Sun..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun night..SW winds 10 to 15 kt. 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 116 Pm Edt Wed Sep 23 2020
Synopsis for massachusetts and rhode island coastal waters.. Hurricane teddy will pass into nova scotia today. Mariners are urged to keep up to date with the latest forecasts. High pressure will be centered south of the waters for Thursday and Friday. 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 Danvers, MA
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location: 42.59, -70.91     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 231741 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 141 PM EDT Wed Sep 23 2020

SYNOPSIS. Post-tropical Cyclone Teddy will quickly move past the Canadian Maritimes today. A high pressure over the Mid Atlantic and central Appalachians today will slowly move offshore this week. Gusty winds will diminish later today. Warmer but continued dry weather will likely last into Saturday. A pattern change toward showery weather arrives later Sunday into next week, with much needed rainfall arriving. Although there will also be many hours of dry weather during this time.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 2 PM UPDATE .

No significant changes were made with this update.

Previous Discussion .

With the departure of Teddy through the Canadian Maritimes, a high pressure across the Mid Atlantic states will maintain a modest pressure gradient across southern New England. Plenty f sunshine today will result in decent mixing, with gusty winds continuing, although not nearly as strong as yesterday.

With less cloud cover and more of an offshore wind today, temperatures will recover more quickly than yesterday, especially with some downsloping. above normal temperatures expected today

See sections further down for items about the Fire Weather and Coastal Flooding concerns.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/. Mainly high pressure in control through Thursday. Dry weather continues with less wind. Winds turn west tonight, then southwest Thursday. Above normal temperatures continue.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. Highlights .

* Warmer than average through the weekend

* Dry pattern continues into Saturday. A pattern chance comes late weekend into next week bringing periodic rain chances.

Details .

Thursday night through Saturday .

The quiet and dry weather pattern holds steady through at least the end of the week and likely into the first half of the weekend. At the mid levels flow remains generally zonal with a moisture starved shortwave or two moving through the flow, lacking enough moisture to bring with it any real chance of rain. Maritime high pressure building north and west will direct mild SW flow into southern New England along with marginally warmer dewpoints. This with the westerly flow aloft will keep temperatures above average through the weekend, in the upper 70s. Low temperatures will be mild, especially Saturday night into Sunday owing to the increasing dewpoints (into the low 60s). The ECMWF continues to depict a quicker return of rain chances (as early as Saturday morning) as shortwave energy passes close enough to impact us, while the GFS shunts it farther to the south. For now, sticking with a dry forecast in line with the GFS ensemble guidance.

Sunday through Tuesday .

A decidedly different (read: wetter) pattern is on tap for much of next week as a large upper level trough settles over the eastern U.S. EPS and GEFS 500 mb height anomalies are in good agreement that we'll see a robust ridge set up over the west coast with troughing further east. The first, shallower trough digs in around late Monday/Tuesday pulling moisture/rainfall up the east coast into our area, followed by a deeper trough toward mid week which would again mean wet weather. Plenty of uncertainty remains on details but overall next week is looking unsettled with potential for our next shot of colder air not until late in the week.

AVIATION /18Z WEDNESDAY THROUGH MONDAY/. Forecaster Confidence Levels .

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

18Z update .

Overall no major changes to the forecast. Gusty afternoon winds will diminish this evening, transitioning from a northwest wind to a southwest wind See the previous discussion below.

High confidence through Thursday.

VFR. Gusty winds of 20-25 kt this afternoon. Winds diminish tonight, then turn more southwest for Thursday.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF. Outlook /Thursday Night through Sunday/ .

Thursday Night through Saturday: VFR.

Saturday Night: Mainly VFR, with local MVFR possible.

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

MARINE. Post-tropical cyclone Teddy will move through the Maritimes today. Winds will continue to diminish today. Based on latest observations, downgraded the remaining Gale Warnings to Small Craft Advisories early this morning.

Otherwise, Small Craft Advisories continue for a while longer. Thinking seas will take longer to subside, so extended into this evening across most waters. Winds and seas subside tonight into Thursday.

Outlook /Thursday Night through Sunday/ .

Thursday Night through Saturday: Winds less than 25 kt.

Saturday Night: Winds less than 25 kt. Slight chance of rain showers.

Sunday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers.

FIRE WEATHER. Relative humidity values and winds will not quite reach the thresholds for another Red Flag Warning. After coordinating with state fire agency partners, will issue a Special Weather Statement to highlight the elevated fire danger due to low relative humidity and gusty winds.

TIDES/COASTAL FLOODING. Lingering swell and wave energy from Post-tropical Cyclone Teddy will continue to impact the southern New England coast with rough surf today. High Surf Advisory continues for the southern New England coast, with the greatest concern along the east coast of MA.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . High Surf Advisory until 8 PM EDT this evening for MAZ007-019- 020-022>024. RI . High Surf Advisory until 8 PM EDT this evening for RIZ006>008. MARINE . Small Craft Advisory until 11 PM EDT this evening for ANZ250. Small Craft Advisory until 8 PM EDT this evening for ANZ251- 256. Small Craft Advisory until 2 AM EDT Thursday for ANZ254-255.

SYNOPSIS . Belk/BW NEAR TERM . Belk/Gaucher SHORT TERM . Belk LONG TERM . BW AVIATION . Belk/Gaucher MARINE . Belk/BW FIRE WEATHER . TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 18 mi59 min 60°F1004.8 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 19 mi115 min W 5.8 G 7.8 64°F 1003.6 hPa
44013 - BOSTON 16 NM East of Boston, MA 22 mi69 min WSW 7.8 G 9.7 65°F 61°F5 ft1004.8 hPa (-0.8)55°F
IOSN3 - Isle of Shoals, NH 30 mi59 min W 17 G 19 72°F 1003.9 hPa (-1.1)48°F
BGXN3 - Great Bay Reserve, NH 33 mi74 min W 5.1 78°F 1005 hPa55°F
CMLN3 35 mi175 min WNW 15 73°F
44073 36 mi115 min W 7.8 G 12 68°F 60°F
44098 - Jeffrey's Ledge, NH (160) 42 mi54 min 60°F5 ft
44030 - Buoy B0102 - Western Maine Shelf 48 mi115 min WSW 3.9 G 5.8 64°F 60°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 49 mi69 min WSW 7.8 G 12 64°F 5 ft1006.1 hPa (-0.4)51°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA1 mi66 minWNW 11 G 1610.00 miFair79°F50°F36%1004.7 hPa
Lawrence Municipal Airport, MA15 mi65 minNW 11 G 2210.00 miFair77°F51°F40%1006.2 hPa
Boston, Logan International Airport, MA16 mi65 minNW 13 G 1910.00 miA Few Clouds77°F48°F37%1005.9 hPa
Laurence G Hanscom Field Airport, MA22 mi68 minW 14 G 2310.00 miA Few Clouds79°F51°F38%1005.8 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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1 day agoE9E6E5CalmN3N4N4CalmN6N6N6N4N8NW8N6N6N7N7N9N10N8N10N13
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2 days agoE8NE6E6NE3CalmCalmCalmCalmCalmN5CalmN5N4N7N7N7N7NE7NE7NE8NE11E11E11E8

Tide / Current Tables for Beverly, Massachusetts
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Beverly
Click for Map
Wed -- 04:33 AM EDT     9.32 feet High Tide
Wed -- 06:32 AM EDT     Sunrise
Wed -- 10:28 AM EDT     0.40 feet Low Tide
Wed -- 01:53 PM EDT     Moonrise
Wed -- 04:51 PM EDT     10.18 feet High Tide
Wed -- 06:38 PM EDT     Sunset
Wed -- 09:56 PM EDT     First Quarter
Wed -- 11:01 PM EDT     Moonset
Wed -- 11:12 PM EDT     -0.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.43.55.87.99.19.28.16.34.120.60.61.93.968.29.710.29.47.75.53.10.9-0.1

Tide / Current Tables for Marblehead Channel, Massachusetts Current
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Marblehead Channel
Click for Map
Wed -- 02:24 AM EDT     0.39 knots Max Flood
Wed -- 05:15 AM EDT     -0.00 knots Slack
Wed -- 06:32 AM EDT     Sunrise
Wed -- 09:31 AM EDT     -0.33 knots Max Ebb
Wed -- 11:41 AM EDT     0.00 knots Slack
Wed -- 01:53 PM EDT     Moonrise
Wed -- 02:31 PM EDT     0.39 knots Max Flood
Wed -- 05:39 PM EDT     -0.00 knots Slack
Wed -- 06:37 PM EDT     Sunset
Wed -- 09:56 PM EDT     First Quarter
Wed -- 10:10 PM EDT     -0.39 knots Max Ebb
Wed -- 11:00 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.40.40.40.30.1-0.1-0.2-0.3-0.3-0.3-0.20.10.30.40.40.30.1-0.1-0.2-0.3-0.4-0.4-0.3

Weather Map
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wmap_A
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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