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Marine Weather and Tides Sandwich, MA Version 3.4

NOTICE 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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:27AM

Sunset 4:23PM

Thursday November 14, 2019 6:46 PM EST (23:46 UTC)

Moonrise 7:05PM

Moonset 9:24AM

Illumination 92%

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 Sandwich CDP, MA

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Area Discussion for - Boston, MA

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Fxus61 kbox 142008 afdbox area forecast discussion national weather service boston norton ma 308 pm est Thu nov 14 2019 Synopsis High pressure moving offshore will draw milder air into southern new england tonight and Friday. Two cold fronts sweep south from canada Friday afternoon and night. Neither has more than a few clouds with it. But behind the second front will be much colder air and gusty north winds. High pressure will bring a brief period of dry weather Sunday. A coastal storm will then bring rain and wind, possibly some ice Sunday night and Monday. A second storm may impact the region Wednesday and Thursday. Near term until 6 am Friday morning A warm front with a few showers shifts north and east of our area this evening. Moisture along this front is shallow and limited, with pw values around 0.50 inch as it moves into the gulf of maine. This should mean light amounts where the showers fall, with the most falling over CAPE cod and islands. Drier air moves in at all levels after midnight. Expect clearing skies most places overnight, although clouds may linger on CAPE cod and islands until morning. Dew points will range from mid 20s northwest to mid 40s on nantucket. This will keep min temps milder than last night with values ranging from the mid 20s north and west to the mid 40s on nantucket. Short term 6 am Friday morning through Friday night Model maps show either two cold fronts, or a pre-frontal trough and a cold front, moving across southern new england. The first trough front moves through Friday afternoon, the second front moves through early Friday night. Cross sections show limited moisture with dry air at 850 mb and above. Pw values less than 0.50 inch. This may be enough for a few clouds but little more. Mixing depths Friday midday will reach between 925 and 950 mb. Temperatures in this layer will support MAX sfc temps in the upper 40s and lower 50s, cooler in the worcester hills and berkshire east slopes. This may also tap 20 kt winds at the top of the layer and draw them to the surface in wsw wind gusts. After the second front moves through Friday night, winds will turn out of the north and draw much colder air into our area. The winds will gust 25-30 kt 30-35 mph with strongest winds along the coast. Temperatures upstream over saskatchewan were in the teens last night, and this looks reasonable for us Friday night. The combination will bring wind chills in the single numbers. Long term Saturday through Thursday Highlights... * temperatures moderate to near seasonal levels but pattern looks unsettled with multiple storm chances. * an ocean storm may impact sne Sun night into Tue morning with rain and coastal wind along with pockets of ice across the interior. Low confidence on storm impacts and precip types. * another coastal storm may impact the area Wed into Thu but again low confidence on storm impacts and precip types. Details... Saturday night into Sunday... a cold night with widespread teens in the interior with low to mid 20s for much of eastern ma and ri except for the immediate coast and cape cod, which drops into the upper 20s to mid 30s. Expect clouds to be on the increase Sun morning from the se. By Sun afternoon, expect NE ene winds to pick up especially near the coast as a storm comes up the coast. Sunday high temperatures will likely be warmer than on Sat but still running 5 to 10 degrees below normal (for reference). And despite temperatures in the mid 40s in eastern ma and ri on Sun afternoon, the winds will make it feel like the low to mid 30s. Further south, an area of low pressure along the southeast coast moves northeastwards to the carolina coast, which is potentially our next weather maker. More below. Sunday night into Monday... there are still plenty of questions with regards to how fast the aforementioned storm will track up the coast and how close it will approach our area given the large spread of model guidance. One thing to watch is a possible period of ice in interior ma sometime on Monday with warm air aloft a cold air mass if the storm were to come up a little closer. But overall, expect chances of shower to be on the increase late Sunday night into early Monday morning. Gfs soundings in bufkit show a warm nose of +2 to +4c at 850mb in orh on Monday, with surface temperatures staying at or below freezing the entire day. However, the ECMWF shows the storm staying well south of the 70w 40n benchmark, which would leave most of our area dry with some isolated rain showers towards the cape. Given the wide spread in models, opted to go with a model blend. The blend shows a chance of freezing rain or sleet west of a torrington ct-enfield ct- worcester ma line on Mon morning changing over to rain showers early mon afternoon before a possible brief switch back to freezing rain on Mon night and finally ending as rain on Tue morning. East of that line, there could be intermittent rain showers into Tue morning before drying out on Tue afternoon. At this point, it should be emphasized that the confidence in specific locations and duration for possible icing is extremely low. Would definitely have to see more consistency in model runs before having more confidence. But with low-level cold air holding its ground and plenty of mid-level warm air advection associated with low level jet on Monday, the potential for icing does exist, particularly for interior areas. Tuesday... as mentioned above, showers linger on Tue morning, with potential icing in interior ma ct. As temperatures rise, any icy mix in the interior should transition to rain showers by late morning. Expect precipitation to taper off late afternoon. Tue evening should be dry but with plenty of clouds. Afternoon highs range from low to mid 40s in western ma ct to upper 40s to low 50s in eastern ma and ri. Tuesday night into wed... the dry period looks to be brief as a storm that develops along the base of a large trough in eastern u.S. And comes up the coast. Again, there is a wide spread in model guidance. The GFS shows the storm tracking well south of the 70w 40n benchmark and intensifying in maritime canada. That would amount to limited impacts for our area. Whereas the ECMWF shows the storm tracking and intensifying over CAPE cod, which would mean widespread rain and high winds wed into thu. The biggest snow in this setup would be over interior new england, though areas near the berkshires could get some snow. Model

blend shows widespread chance for rain with snow in western ma on wed morning changing over to rain in the afternoon before drying out overnight. Afternoon highs range from upper 30s in western ma to mid 40s to low 50s elsewhere. Thursday... Thursday looks to be mostly dry with a mix of Sun and clouds. Gusty nw winds, however, keep high temperatures in the upper 30s and low 40s in western ma and mid to upper 40s elsewhere. Aviation 20z Thursday through Tuesday Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. 12z update... short term through Friday night ... tonight... vfr with clouds most places, but with a few ceilings briefly reaching 3000 feet early tonight. Clearing skies after midnight, except for lingering clouds through the night on CAPE cod and islands. Friday... vfr. Skies clearing on the CAPE islands. West-southwest winds gusting 15-20 kt. Friday night... vfr. Winds shifting from the north and gusting 25-30 kt. Kbos taf... High confidence in taf. Kbdl taf... High confidence in taf. Outlook Saturday through Tuesday ... Saturday:VFR. Windy with gusts up to 35 kt. Saturday night:VFR. Breezy. Sunday: mainlyVFR, with local MVFR possible. Breezy. Sunday night: mainly MVFR, with local ifr possible. Windy with local gusts up to 30 kt. Chance ra, slight chance fzra, slight chance pl. Monday: mainly MVFR, with areas ifr possible. Windy with local gusts up to 30 kt. Chance ra, chance fzra. Monday night: mainly MVFR, with local ifr possible. Breezy. Slight chance ra, slight chance fzra. Tuesday: slight chance ra, slight chance fzra. Marine Short term through Friday night ... High confidence. Tonight... milder air moving up from the southwest may generate a few light showers. Conditions on the threshold for small craft advisories, with winds reaching 20-25 kt and seas near 5 feet. Small craft advisories will continue, but with minor adjustments. Friday... westerly winds pause in the morning, increase in the afternoon. Seas also subside a little in the morning, then build in the afternoon. Winds gusting near 25 kt, seas near 5 feet on the open waters. Friday night... cold front moves through early in the night. Winds turn out of the north and increase as much colder air moves over southern new england and the waters. Winds increasing to near 35 kt during the overnight... Seas build to 5 to 9 feet on the exposed waters. We have issued a gale watch for this period and continued into Saturday. Outlook Saturday through Tuesday ... Saturday: low risk for gale force winds with gusts up to 35 kt. Rough seas up to 11 ft. Saturday night: moderate risk for small craft advisory winds with gusts up to 25 kt. Rough seas up to 10 ft. Sunday: moderate risk for small craft advisory winds with local gusts up to 30 kt. Rough seas up to 13 ft. Sunday night through Monday: strong winds with gusts up to 30 kt. Rough seas up to 17 ft. Chance of rain. Monday night: low risk for small craft advisory winds with gusts up to 25 kt. Rough seas up to 14 ft. Slight chance of rain. Tuesday: winds less than 25 kt. Areas of rough seas. Chance of rain. Climate Record low min temps for Thursday nov 14 boston 16 1905 ... This morning 23 hartford 15 1986 ... This morning 15 ... Tied providence 16 1905 ... This morning 18 worcester 10 1986 ... This morning 15 Box watches warnings advisories Ct... None. Ma... None. Ri... None. Marine... Small craft advisory from 7 pm this evening to 6 pm est Friday for anz250-254-255. Synopsis... Wtb chai near term... Wtb short term... Wtb long term... Chai aviation... Wtb chai marine... Wtb chai climate...

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
44090	9 mi	17 min			52°F	1 ft
WAXM3 - Waquoit Bay Reserve, MA	14 mi	62 min	Calm	43°F			1028 hPa	37°F
BZBM3 - 8447930 - Woods Hole, MA	20 mi	53 min		49°F	50°F		1027.4 hPa
44020 - NANTUCKET SOUND	23 mi	57 min	12 G 18	48°F	51°F	1 ft		39°F
44018 - SE Cape Cod 30NM East of Nantucket, MA	35 mi	57 min	SSE 16 G 18	44°F		2 ft	1027.9 hPa (-1.7)	35°F
FRVM3 - 8447386 - Fall River, MA	36 mi	53 min		46°F	49°F		1027 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA	37 mi	47 min	S 7 G 9.9	47°F			1026.8 hPa (-1.8)
FRXM3	37 mi	53 min		46°F				35°F
BUZM3 - Buzzards Bay, MA	39 mi	47 min	SSW 22 G 23	49°F			1027 hPa (-1.5)
NTKM3 - 8449130 - Nantucket Island, MA	40 mi	47 min	S 7 G 13	48°F	45°F		1028.2 hPa (-1.4)
44013 - BOSTON 16 NM East of Boston, MA	40 mi	57 min	SSE 14 G 18	45°F	52°F	2 ft	1026.6 hPa (-2.0)	38°F
PRUR1	45 mi	47 min		49°F				37°F
CPTR1 - 8452944 - Conimicut Light, RI	46 mi	47 min	NW 7 G 8	41°F	49°F		1027.6 hPa (-0.7)
NAXR1 - Narragansett Bay Reserve, RI	46 mi	62 min	SW 7	47°F			1027 hPa	37°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI	46 mi	47 min	W 7 G 8.9	48°F			1027.2 hPa (-1.7)
PVDR1	47 mi	47 min	NNW 4.1 G 5.1				1027.3 hPa (-1.3)
FOXR1 - 8454000 - Providence, RI	48 mi	53 min	N 1.9 G 5.1	40°F	50°F		1027.1 hPa
NWPR1 - 8452660 - Newport, RI	48 mi	53 min	SSW 17 G 20	50°F	45°F		1026.6 hPa

Wind History for Borden Flats Light at Fall River, MA

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NW11 G14

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NW16 G20

NW12 G15

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NW19 G25

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SE10

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S10 G13

S16 G21

SW16 G20

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NW13 G17

NW13 G17

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NW17 G22

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NW13 G16

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Otis Air National Guard Base, MA	9 mi	62 min	SE 3	10.00 mi	Overcast	37°F	35°F	93%	1027.8 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA	13 mi	1.8 hrs	N 0	10.00 mi	Overcast	42°F	37°F	85%	1028.1 hPa
Plymouth, Plymouth Municipal Airport, MA	16 mi	55 min	ESE 4	10.00 mi	Fair	36°F	33°F	89%	1027.3 hPa
Provincetown Municipal Airport, MA	22 mi	51 min	SE 8	10.00 mi	Fair	42°F	37°F	82%	1027.9 hPa
Marshfield Airport, MA	24 mi	52 min	SSE 4	10.00 mi	Fair	41°F	37°F	87%	1027.1 hPa

Link to 5 minute data for KFMH

Wind History from FMH (wind in knots)

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NW6

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Calm

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S14 G19

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NW8 G15

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NW15 G25

NW21 G30

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NW17 G24

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NW12 G18

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NW13 G28

N13 G23

NW15 G23

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2 days ago

S8

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SW12 G20

SW12 G20

SW12 G20

SW17 G24

SW17 G24

SW12 G18

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SW16 G24

SW21 G26

SW15 G23

W13 G22

NW18

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NW12 G21

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NW13 G19

NW13 G19

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Tide / Current Tables for Cape Cod Canal (East Entrance), Massachusetts

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Tide / Current Tables for Cape Cod Canal, 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 (18,4,5,8)

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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 numerious 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.