Tuesday, April13, 2021
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Marine Weather and Tides
Orleans, MA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:01AMSunset 7:20PM Tuesday April 13, 2021 12:24 AM EDT (04:24 UTC) Moonrise 6:59AMMoonset 8:57PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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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ANZ254 Coastal Waters From Provincetown Ma To Chatham Ma To Nantucket Ma Out 20 Nm- 1017 Pm Edt Mon Apr 12 2021
.small craft advisory in effect through Tuesday evening...
Overnight..NE winds 10 to 15 kt, becoming N 15 to 20 kt. Gusts up to 25 kt. Seas 5 to 7 ft.
Tue..N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft.
Tue night..N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 5 to 7 ft.
Wed..N winds 10 to 15 kt. Seas 4 to 6 ft.
Wed night and Thu..E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft.
Thu night..E winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Showers likely.
Fri..E winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft. Showers likely.
Fri night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 10 to 13 ft. A chance of showers.
Sat..N winds 15 to 20 kt with gusts up to 30 kt. Seas 9 to 12 ft.
Sat night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 7 to 10 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 1016 Pm Edt Mon Apr 12 2021
Synopsis for massachusetts and rhode island coastal waters.. High pressure over quebec combined with weak areas of low pressure tracking south of new england will bring north to northeast winds across the ma and ri waters thru Tuesday. By Wednesday, high pressure builds across the waters, with winds easing. However, by Thursday, low pressure will emerge off the nj coast, and may strengthen into a gale center Fri as it tracks south of new england. In addition, there will be poor visibility at times in periods of rain, fog, and drizzle, with midweek possibly offering a period of dry weather and improved vsby. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/erh/ghwo?sid=box.


7 Day Forecast for Marine Location Near Orleans, MA
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location: 41.77, -69.94     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 130149 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 949 PM EDT Mon Apr 12 2021

SYNOPSIS.

High pressure over Quebec noses southward into New England, providing a dry weather Tuesday afternoon into Wednesday, along with milder temperatures. However by late Thu, low pressure emerges off the NJ coast, then intensifies as it slowly tracks south of New England Fri, with a widespread windswept rain possible into early Saturday. Some wet snow is possible. Gradual improvement over the weekend as the storm exits out to sea, with dry mild weather likely Sunday. Rain may return early next week.

NEAR TERM /UNTIL 6 AM TUESDAY MORNING/.

950 PM Update .

High pressure over eastern Canada will continue to generate a northeast low level flow of air overnight. While winds will be rather light across most of the region, it will be a little breezy at times across the Cape and Islands with a modest northeast LLJ.

Considerable cloudiness will persist overnight, but there will be some breaks in the cloud cover at times with some pockets of dry air. Perhaps a touch of drizzle late too, but ceiling bases are not too low so any drizzle will probably will be fairly spotty. Otherwise, just dry and cool with temperatures not dropping too far from the current readings. Lows should bottom out mainly in the upper 30s to the middle 40s.

SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/. Highlights

* Milder conditions for Tuesday * Mostly cloudy skies and northerly winds persist through Wednesday morning

.Tuesday/Tuesday Night.

A somewhat more mild day in store for tomorrow as a more northerly flow pattern will limit the amount of cool maritime air that gets advected into southern New England. An upper-level ridge building in from the west should allow for some clearing skies by mid-late afternoon tomorrow for the western portions of southern New England. The eastern half of the forecast area however is likely to remain under overcast skies. This will result in high temperatures tomorrow ranging from the upper 40s/low50s toward the southeast to the upper 50s to perhaps 60 toward the northwest. Steady northerly winds will diminish to light and variable by tomorrow night as the pressure gradient relaxes in response to the low-pressure system over the Atlantic continuing eastward. Light winds and cloudy skies Tuesday night will persist into Wednesday morning where we will slightly warmer low temperatures in the low-mid 40s.

LONG TERM /WEDNESDAY THROUGH MONDAY/. Highlights .

* Pick of the week likely Wed, dry and mild away from the coast * Soaking, windswept rain likely Thu night into Fri night, with a low probability of some wet snow * Gradual improvement over the weekend, especially Sunday

Wednesday .

Could be the pick of the week, as short wave riding provides dry weather and with surface ridge overhead, onshore flow will come to an end and give way to light/variable winds. Strong April sun should be able to burn thru any remaining low level moisture. Thus, temps in the CT River Valley should easily achieve 60-65 for highs, mid to upper 50s elsewhere with at least a few breaks of sunshine if not more. Coolest temps along the coast, 50-55 with light winds likely becoming onshore. Can't rule out an isolated shower inland given surface heating/differential heating and approaching trough, as mid level ridge axis moves east later in the day.

Thursday .

Uncertainty with timing of next system. Bulk of 12z guidance and ensembles suggest Thu morning is dry especially Eastern MA and RI, with threat of rain increasing later in the day. However, the 12z GFS is faster with onset of rain Wed night into Thu morning. Given the blocky pattern, leaning toward the slower onset times. Hence, a dry start Thu in Eastern MA/RI followed by a wet finish, especially Western MA/CT.

Friday .

Mid level low currently over the High Plains moves east and strengthens as it tracks south of New England Fri/Fri night. Most of the 00z and 12z guidance evolves this into an impressive system, with strong easterly onshore wind and moisture anomalies composing a long fetch of moisture/fire hose from the Atlantic into Southern New England. Exact track will be critical to determine where the dry slot sets up and corresponding axis of heaviest qpf. Could be a windswept rain for most of MA/RI/CT given 40-50 kt low level onshore jet. Also, given lowering heights, cold air aloft and heavy qpf, rain may change to snow at times. Exact thermal profiles, where heaviest qpf bands setup and dry slot will be critical to snow potential. At this time range, way too early to nail down any details. Thus, just have to watch how this evolves during the week. As for rainfall, both ECENS and GEFS offering 40-70% probs of rainfall exceeding 1 inch. Seems reasonable given wind and moisture anomalies combined with slow movement as system becomes occluded. Also, strong low level ENE jet up to 50 kt will provide a windswept rain with gusty onshore winds. Highs probably stuck in the 40s given onshore flow and rain.

Weekend .

Slow improvement given its an occluded low. Thus lingering precip possible early Sat, then trending drier and not as cool for the afternoon, but will have to watch a possible slower trend. By Sunday, short wave ridging should provide dry and milder weather, highs at least in the upper 50s and lower 60s, potentially warmer. Then chance of showers early next week with next upstream trough arrival.

AVIATION /02Z TUESDAY THROUGH SATURDAY/. Forecaster Confidence Levels.

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

23z update . High confidence in trends.

Trending to MVFR-VFR this evening, but then back down to IFR- MVFR toward daybreak Tuesday. Dry weather this evening, then spotty light drizzle possible toward morning across Eastern MA. Gusty ENE winds 15-20 kt with gusts up to 25 kt over Cape Cod and the Islands. Earlier discussion below.

================================================================

Tonight/Tomorrow/

MVFR with embedded IFR ceilings will prevail through the majority of the TAF period along with a persistent northeasterly flow that will shift to northerly after midnight. Light drizzle at most terminals should begin to settle down before midnight. Expecting a short period overnight (after 03Z) where ceilings improve to VFR at select terminals. By tomorrow morning MVFR ceilings will settle back in across southern New England and prevail through tomorrow afternoon.

KBOS TAF . Moderate confidence in TAF. VFR bases this morning, then lowering to MVFR-IFR ~13-15z/9-11AM.

KBDL TAF . Moderate confidence in TAF. VFR bases this morning, lowering to MVFR ~15-17z/11AM-1PM.

Outlook /Wednesday through Saturday/ .

Wednesday: Mainly VFR, with local MVFR possible.

Wednesday Night: Mainly VFR, with local MVFR possible. Chance SHRA.

Thursday: Mainly VFR, with areas MVFR possible. Breezy. Chance SHRA.

Thursday Night: Mainly MVFR, with areas IFR possible. Breezy. SHRA likely.

Friday: Mainly MVFR, with areas IFR possible. Windy with gusts up to 30 kt. SHRA likely.

Friday Night: MVFR/IFR conditions possible. Breezy. Slight chance SHRA.

Saturday: Mainly VFR, with local IFR possible. Breezy.

MARINE.

Moderate North/Northeasterly flow over the Atlantic waters will continue into tomorrow resulting in a continued period of choppy waters for the marine forecast zones. Small craft advisory has been extended for the outer waters through 00Z Wednesday as latest forecast guidance has suggested that wave-heights greater than 4 feet will persist through that time period. Winds/seas will gradually diminish below SCY criteria for the near-shore zones by tomorrow morning.

Outlook /Wednesday through Saturday/ .

Wednesday: Winds less than 25 kt. Local rough seas.

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

Thursday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers.

Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 10 ft. Rain showers likely.

Friday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 15 ft. Rain showers likely.

Friday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 14 ft. Slight chance of rain showers.

Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 14 ft.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory until noon EDT Tuesday for ANZ231>234-251. Small Craft Advisory until 8 AM EDT Tuesday for ANZ235-237. Small Craft Advisory until 8 PM EDT Tuesday for ANZ250-254>256.

SYNOPSIS . Nocera/RM NEAR TERM . Frank SHORT TERM . RM LONG TERM . Nocera AVIATION . Nocera/RM MARINE . Nocera/RM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTM3 6 mi55 min N 6 G 9.9 43°F 47°F1012.8 hPa
44090 21 mi59 min 44°F1 ft
44020 - NANTUCKET SOUND 26 mi35 min 9.7 G 12 47°F2 ft
WAXM3 - Waquoit Bay Reserve, MA 34 mi100 min NW 1.9 41°F 1013 hPa38°F
NTKM3 - 8449130 - Nantucket Island, MA 35 mi55 min NE 8 G 11 43°F 49°F1013 hPa
BZBM3 - 8447930 - Woods Hole, MA 42 mi55 min 42°F 47°F1013.6 hPa

Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chatham, Chatham Municipal Airport, MA6 mi33 minN 010.00 miFair39°F35°F86%1013.8 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA19 mi29 minN 510.00 miFair41°F37°F86%1013 hPa
Provincetown Municipal Airport, MA22 mi29 minN 910.00 mi42°F40°F92%1014.2 hPa

Link to 5 minute data for KCQX

Wind History from CQX (wind in knots)
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Tide / Current Tables for Nauset Harbor, Cape Cod, Massachusetts
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Nauset Harbor
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Tue -- 01:19 AM EDT     6.29 feet High Tide
Tue -- 06:02 AM EDT     Sunrise
Tue -- 06:58 AM EDT     Moonrise
Tue -- 07:52 AM EDT     -0.05 feet Low Tide
Tue -- 01:43 PM EDT     6.01 feet High Tide
Tue -- 07:18 PM EDT     Sunset
Tue -- 08:05 PM EDT     0.37 feet Low Tide
Tue -- 08:56 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.56.36.15.44.331.50.3-00.51.63.24.85.865.54.63.42.10.90.40.71.83.2

Tide / Current Tables for Pollock Rip Channel, Massachusetts Current
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Pollock Rip Channel
Click for Map
Tue -- 01:56 AM EDT     -1.75 knots Max Ebb
Tue -- 04:59 AM EDT     0.00 knots Slack
Tue -- 06:02 AM EDT     Sunrise
Tue -- 06:58 AM EDT     Moonrise
Tue -- 08:28 AM EDT     2.06 knots Max Flood
Tue -- 11:28 AM EDT     -0.00 knots Slack
Tue -- 02:13 PM EDT     -1.71 knots Max Ebb
Tue -- 05:18 PM EDT     0.00 knots Slack
Tue -- 07:18 PM EDT     Sunset
Tue -- 08:43 PM EDT     1.95 knots Max Flood
Tue -- 08:56 PM EDT     Moonset
Tue -- 11:42 PM EDT     -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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-0.9-1.6-1.8-1.5-0.900.91.6221.50.5-0.6-1.4-1.7-1.6-1.1-0.30.71.41.91.91.60.8

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