Wednesday, February19, 2020
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Marine Weather and Tides
Salisbury, 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 6:33AMSunset 5:20PM Wednesday February 19, 2020 5:00 AM EST (10:00 UTC) Moonrise 5:16AMMoonset 2:25PM Illumination 19% Phase: Waning Crescent; Moon at 25 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- 416 Am Est Wed Feb 19 2020
.gale warning in effect through this evening...
Today..W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft.
Tonight..NW winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Thu..NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft.
Thu night..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Fri..NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas around 2 ft.
Fri night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sat and Sat night..W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 4 ft.
Sun and Sun night..SW 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 416 Am Est Wed Feb 19 2020
Synopsis for massachusetts and rhode island coastal waters.. A cold front crosses the waters early this morning, followed by northwest wind gusts of 30 to 35 later this morning and afternoon. Large high pres over the central states will then slowly builds E and pass S of our 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 Salisbury, MA
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location: 42.81, -70.81     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 190837 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 337 AM EST Wed Feb 19 2020

SYNOPSIS.

Dry weather returns today, but it will become windy. Winds diminish this evening, but much colder weather works into the region tonight and Thursday.Below-normal temperatures continue into Friday, before temperatures return to above normal levels for the weekend. Our weather pattern through the weekend will be dry, with the next chance for precipitation being Monday into Tuesday.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

335 AM Update .

* Mostly sunny but windy today

A cold front crossed the region early this morning. A few lingering spot showers across the Cape/Islands should come to an end by daybreak. Otherwise, cold air advection aloft today will be offset as skies becoming mostly sunny. Temperatures much of the day should be in the 35 to 40 degree range across the interior and between 40 and 45 along the coastal plain. It will feel colder though as it becomes windy later this morning and afternoon with steepening lapse rates and a modest pressure gradient. Northwest wind gusts of 30 to 40 mph developing later this morning and continue into the afternoon. It is possible a few locations briefly touch wind advisory criteria, but felt that risk was too isolated to warrant any wind headlines.

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

Tonight .

Gusty northwest winds will diminish this evening with the loss of daytime heating and as large high pressure begins to build in from the west. Dry weather persists, with just a low risk for a brief flurry/snow shower in our western zones after midnight with some remnant lake moisture. Otherwise, it will turn cold tonight compared to what we have experienced most of this winter. Low temps by daybreak should mainly be in the teens to near 20.

Thursday .

A mixture of clouds and sun are anticipated on Thursday, but it will be cold. High temperatures will range from the middle to upper 20s in the high terrain, to the lower to middle 30s elsewhere. High pressure will continue to build in from the west, resulting in much less wind than today. Still may see some northwest wind gusts around 20 mph.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/.

Highlights .

* Dry conditions with below-avg temps continuing into Thurs nite and Fri. Slow moderation to temps begin later Fri/Fri nite.

* Above-avg temps resume for the weekend, with plenty of sun and dry conditions.

* Unsettled weather returns Mon-Tues, with precipitation chances on the increase. Details still uncertain, though looks mainly wet vs wintry at this point in time.

Details .

Thursday Night through Friday Night:

A continued colder and dry pattern for this period, with the core of the coldest air progged to settle over Southern New England Thurs night into the first part of Fri. 925-850 mb thermal trough becomes established across New England early Fri; though the thermal trough axis is pretty transient/progressive, with slow moderation later Fri.

850 mb temps dip to around -16 to -18C, with 925 mb temps -14 to - 16C. Good radiational cooling is likely Thursday night, and MOS typically performs better than a model-blended approach in those situations; do have some reservations about weighing MOS too heavily though as the recent MAV guidance seems too cold given a lack of snowpack. Opted for lows in the single digits to the low teens in the interior/mid teens near the coasts; a few spots in northern MA such as Orange could however drop to near zero.

Northwest winds will slacken a bit with speeds mainly 5 mph or less under sfc ridging Thurs night/early Fri. That should keep wind chills from dipping too low. Model guidance does show some ocean- effect SHSN early Fri, but this may be more confined to the offshore waters with guidance trending wind directions from a 310-340 direction versus 360-030.

A chilly start, though flow will become more WNW-W late and low- level thermal profiles warming a bit. Full sun supports highs in the 20s to near freezing, about 5-10 degrees below average compared to late-Feb normals. Winds continue to become SW into Fri night with lows upper teens to mid/upper 20s.

The Weekend:

Shaping up to be a nice weekend with large high pres initially over the Southern Appalachians in TN/western NC shifting into the coastal waters off NC thru Sunday. This will afford continued dry weather, plenty of sun and milder southwest breezes, as 925 mb temps steadily warm to around -2 to -4C. Will show highs in the upper 30s to mid 40s Sat, and well into the 40s to near 50 on Sunday.

Monday into Tuesday:

After a prolonged stretch of dry weather, early next week starts to turn more unsettled. This unsettled pattern stems from ejection of a deamplifying mid-level low from the Desert Southwest. Guidance shows significant variation in low track and evolution - in general, the international guidance show better agreement than compared to the drier GFS. Will continue to maintain chance PoPs in this period; at the moment thinking mainly a rain event but potential for an initial/brief wintry mix pending sfc temps mainly NW/northern MA. This is still 6-7 days away and will continue to follow guidance trends in the coming days in this period before specific details can be narrowed down.

AVIATION /09Z WEDNESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Today . High confidence. VFR today with NW wind gusts increasing to between 25 and 35 knots later this morning and afternoon.

Tonight . High confidence. VFR with NW wind gusts diminishing this evening.

Thursday . High confidence. VFR with NW wind gusts between 15 and 20 knots.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF.

Outlook /Thursday Night through Sunday/ .

Thursday Night through Saturday: VFR.

Saturday Night through Sunday: VFR.

MARINE.

Today . High confidence. Strong cold advection aloft will steepen lapse rates over the ocean. NW wind gusts of 30 to 35 knots later this morning and afternoon. Opted for Gale headlines across our eastern waters with strong small craft headlines elsewhere. Seas over the open waters will be on the order of 4 to 8 feet.

Tonight . High confidence. The pressure gradient begins to weaken as large high pressure slowly builds in from the west. However, strong cold advection will still yield NW wind gusts of 25 to 30 knots and SCA headlines will be needed for the open waters. Some light freezing spray should develop too.

Thursday . High confidence. Some lingering SCA wind gusts/seas across the eastern waters in the morning should diminish by afternoon as high pressure slowly builds in from the west.

Outlook /Thursday Night through Sunday/ .

Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of seas approaching 5 ft.

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

Saturday through Saturday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.

Sunday: Winds less than 25 kt.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory until 1 AM EST Thursday for ANZ232>234. Gale Warning from 9 AM this morning to 4 PM EST this afternoon for ANZ230. Gale Warning from 7 AM this morning to 7 PM EST this evening for ANZ231-251-254. Small Craft Advisory from 7 AM this morning to 9 PM EST this evening for ANZ236. Small Craft Advisory until 4 AM EST Thursday for ANZ235-237. Gale Warning from 7 AM this morning to 9 PM EST this evening for ANZ250. Small Craft Advisory until 7 AM EST Thursday for ANZ255-256.

SYNOPSIS . Frank/Loconto NEAR TERM . Frank SHORT TERM . Frank LONG TERM . Loconto AVIATION . Frank/Loconto MARINE . Frank/Loconto


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 15 mi60 min W 15 G 16 37°F 1012.5 hPa (+0.3)36°F
BGXN3 - Great Bay Reserve, NH 17 mi75 min W 5.1 33°F 1013 hPa33°F
CMLN3 19 mi176 min W 8 31°F
44073 20 mi116 min WSW 12 G 14 37°F 40°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 24 mi116 min WNW 12 G 16 38°F 40°F6 ft1011.1 hPa
44013 - BOSTON 16 NM East of Boston, MA 33 mi70 min W 18 G 23 42°F 41°F5 ft1013 hPa (-0.0)37°F
44030 - Buoy B0102 - Western Maine Shelf 33 mi116 min W 9.7 G 14 7 ft1012.2 hPa
44098 - Jeffrey's Ledge, NH (160) 34 mi22 min 43°F6 ft
BHBM3 - 8443970 - Boston, MA 34 mi66 min 40°F 37°F1013.1 hPa
WELM1 - 8419317 - Wells, ME 38 mi60 min 33°F 38°F1012.7 hPa (+0.3)
WEXM1 - Wells Reserve, ME 39 mi60 min SW 4.1 32°F 31°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lawrence Municipal Airport, MA17 mi66 minWSW 68.00 miOvercast35°F33°F93%1014.3 hPa
Beverly, Beverly Municipal Airport, MA17 mi67 minW 610.00 miOvercast38°F34°F86%1013.3 hPa
Pease Air Force Base / Portsmouth, NH19 mi64 minW 58.00 miOvercast34°F33°F98%1012.9 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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SE6E3N6NW5NW3W3NW5SW4W4W5W6W3
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NW10N5N5N6N7N5--N4CalmN5N4NE6NE5
2 days agoSW8SW10SW10SW10
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Tide / Current Tables for Merrimack River Entrance, Massachusetts
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Merrimack River Entrance
Click for Map
Wed -- 01:56 AM EST     0.85 feet Low Tide
Wed -- 04:15 AM EST     Moonrise
Wed -- 06:35 AM EST     Sunrise
Wed -- 08:16 AM EST     8.70 feet High Tide
Wed -- 01:25 PM EST     Moonset
Wed -- 02:46 PM EST     0.04 feet Low Tide
Wed -- 05:19 PM EST     Sunset
Wed -- 09:00 PM EST     7.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.20.91.42.84.76.688.78.57.35.43.31.50.30.10.82.44.367.17.67.15.8

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Wed -- 12:45 AM EST     -0.95 knots Max Ebb
Wed -- 02:42 AM EST     0.00 knots Slack
Wed -- 04:15 AM EST     Moonrise
Wed -- 06:19 AM EST     1.49 knots Max Flood
Wed -- 06:35 AM EST     Sunrise
Wed -- 08:49 AM EST     -0.00 knots Slack
Wed -- 01:11 PM EST     -1.23 knots Max Ebb
Wed -- 01:26 PM EST     Moonset
Wed -- 03:26 PM EST     0.00 knots Slack
Wed -- 05:19 PM EST     Sunset
Wed -- 06:50 PM EST     1.57 knots Max Flood
Wed -- 09:35 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-0.9-0.50.20.611.51.30.6-0.1-0.6-0.9-1.1-1.2-1-0.30.30.71.31.61.10.4-0.2-0.6

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (5,6,7,8)
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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.