Wednesday, April21, 2021
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Marine Weather and Tides
Somerset, 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 5:53AMSunset 7:33PM Wednesday April 21, 2021 5:18 PM EDT (21:18 UTC) Moonrise 1:02PMMoonset 3:16AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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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ANZ236 Narragansett Bay- 416 Pm Edt Wed Apr 21 2021
.gale warning in effect from Thursday morning through late Thursday night...
Tonight..W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 4 ft. Showers likely this evening.
Thu..W winds 15 to 20 kt with gusts up to 35 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance.
Thu night..W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 4 ft.
Fri..W winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft.
Fri night and Sat..SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft.
Sat night..SW winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Gusts up to 20 kt. Waves 2 to 4 ft. Showers likely. Vsby 1 to 3 nm.
Sun..E winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 4 ft. Showers. Vsby 1 to 3 nm.
Sun night..NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. A chance of showers.
Mon and Mon night..NW winds 10 to 15 kt with gusts up to 25 kt. Waves 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 Pm Edt Wed Apr 21 2021
Synopsis for massachusetts and rhode island coastal waters.. A strong cold front will cross the waters early tonight bringing showers and isolated Thunderstorms. Winds then shift from the west behind the front with gale force gusts expected later tonight through Thursday. High pressure builds over the region Friday and Saturday with diminishing wind. A coastal storm moves in on Sunday bringing rain and gusty winds. Monday will dry out, but with gusty northwest winds lingering. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/ehwo


7 Day Forecast for Marine Location Near Somerset, MA
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location: 41.71, -71.17     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 212035 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 435 PM EDT Wed Apr 21 2021

SYNOPSIS. Windy and much cooler weather follows behind a strong cold front late tonight into Thursday, then a warming trend Friday and Saturday. A coastal storm will likely bring rain and coastal wind Sunday followed by blustery and drier conditions Monday. Mild and dry weather expected into midweek as high pressure builds into the region.

NEAR TERM /UNTIL 6 AM THURSDAY MORNING/.

420 PM Update .

* Getting much colder and blustery with minor snow accumulations possible in the high terrain.

925mb temperatures plummet to -10C overnight as a strong cold front crosses the region. With mid to low level lapse rates steepening thanks to the cold air aloft, it will be a blustery night. Also with temperatures crashing behind the front, there could be minor snow accumulations across the East Slopes of the Berkshires and Northern Worcester Hills. In fact as of this writing, Pittsfield MA is reporting thundersnow! Nonetheless, with the mid and low levels drying out rapidly following the cold frontal passage, not expecting much in terms of accumulation. Lows generally in the mid to upper 20s over the interior higher elevation and low to mid 30s across Eastern MA/RI, except for upper 30s over the Cape and Islands.

In addition, a Freeze Warning has been issued for the Northern CT counties and Northwest RI tonight as we anticipate temperatures falling below 32F overnight as the growing season commences.

SHORT TERM /6 AM THURSDAY MORNING THROUGH 6 PM THURSDAY/.

* Cold and blustery day with highs generally in the 40s.

As the attendant low pressure undergoes rapid cyclogenesis as it exits into the Canadian Maritimes, a strong pressure gradient will be set up across the Northeast. Bufkit soundings also show deep mixing up to 750mb with low-level lapse rates approaching dry adiabatic. In a nutshell, it will be blustery for much of Thursday with northwest wind gusts 35 to 40 mph. Opted to hold off on a Wind Advisory despite the impressive mixed boundary layer because the winds aloft generally top out at about 40 kts, which means while some locations may experience marginal Wind Advisory level wind gusts (40+ kt), the coverage should be isolated enough to preclude a headline at this time. Also, highs only top out in the 40s to around 50 degrees with 850mb temperatures remaining around the -8 to -10C range throughout the day. This will be about 10 to 15 degrees below average.

A Freeze Watch has also been issued for parts of the MA coastal plains Thursday night as we anticipate overnight temperatures falling below 32F with the growing season underway.

In addition, the strong winds and low dew points may lead to fire weather concerns for portions of the CWA. Upon consultation with our fire weather partners, a fire weather SPS will be issued for Thursday. See the Fire Weather section for more details.

LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/.

Highlights

* Gradual warming trend Friday and Saturday, with highs near 70 on Saturday.

* Coastal low impacts the area Sunday, quenching rain likely.

Thursday Night through Saturday .

Thursday night will be blustery as 40 kt winds from the top of the boundary layer mix down to the surface. Overall, westerly 25-35 kt winds likely, especially across the high terrains of the Berkshires and Worcester Hills. Gusts should diminish slightly towards sunrise. Overnight lows will be chilly for late April, upper 20s west to mid 30s east.

A high pressure to our south and a weak ridging pattern build a gradual warming trend into southern New England to wrap up the week. After a chilly start, widespread sunshine and dewpoints in the mid 20s will support a pretty steep temperature climb Friday morning. By the afternoon, temps will rebound into the upper 50s to near 60 degrees. Winds will subside from their peak on Thursday, but remain gusty on Friday as deep mixing to 850 mb allows westerly gusts of 25 to 30 kts to redevelop.

High pressure centers itself well to our south on Saturday, but allows the ridge axis to center itself over our area. Saturday will be mild and winds relatively light compared to previous days. High temperatures will approach 65-70 across much of the region. The Cape, Islands, and southern RI will remain cooler as the wind switches from west to SW over the cool waters of the Atlantic. High clouds overspread SNE starting Saturday afternoon ahead of a low building in from the SW.

Sunday and Monday .

Both deterministic and ensemble guidance have narrowed in on the conclusion that a coastal low will form off of the mid-Atlantic and press into our region on Sunday. Given that this low moves in on the heels of seasonably mild air and the vertical column remains warm, with 850 mb temps +4-8 degrees C, p-type will be rain. Precipitation looks to finish up overnight Sunday into Monday, but as cool air wraps in behind the departing low, cooler guidance (ECMWF) notes that a flurries are possible across the high terrain of western Massachusetts. Models generally agree that 1-2 inches of QPF is possible.

Otherwise, seasonable temperatures expected Sunday and Monday with highs in the mid 50s and low 60s. Some guidance notes a blast of chilly air is possible overnight Sunday with lows in the upper 20s and low 30s, but given that this storm is in the day 5-6 period, warmer NBM guidance was used for overnight lows. 30-s to mid 40s expected.

Guidance continues to differ on the exact timing of the low, as well as low placement, which will affect which locations see the most precipitation, and if rain will switch to snow for a brief period across the high terrain Sunday night. Regardless, any potential snow looks to be light. Given the high sun angle in late April and that seasonably mild temperatures will warm surfaces, accumulation is unlikely in the event that flurries develop.

AVIATION /20Z WEDNESDAY THROUGH MONDAY/. Forecaster Confidence Levels.

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

Through 00z . High confidence in trends. Moderate in timing.

Line of strong to locally severe thunderstorms continue to push through Southern New England. Generally MVFR to VFR conditions except during periods of heavy rain where conditions fall to IFR. S/SW winds turning NW/W behind the front with gusts on the order of 25-30 kts.

Tonight . High confidence.

Any showers come to an end during the evening and should see any lingering MVFR conditions improving to VFR. Winds shift to the WNW/NW and will be strong at 10-15 kts. Gusts of 25-30 kts during the evening increasing to 30-35 kts late.

Thursday . High confidence.

VFR with strong WNW/NW winds. Speeds of 15-25 kts and gusts of 30-40 kts. Could see some cloud bases of 4-6 kft during the afternoon.

KBOS TAF . High confidence in TAF.

KBDL TAF . High confidence in TAF.

Outlook /Thursday Night through Monday/ .

Thursday Night: VFR. Windy with gusts up to 35 kt.

Friday through Friday Night: VFR. Breezy.

Saturday: VFR. Breezy. Slight chance SHRA.

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

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

Sunday Night: Mainly VFR, with areas MVFR possible. Windy with gusts up to 30 kt. Slight chance SHRA.

Monday: VFR. Windy with areas of gusts up to 30 kt.

MARINE. * Gale Warnings in effect for all waters through Thursday night.

Tonight . High confidence

Strong cold front crosses the waters during the evening. Expect any showers/storms to end during the evening. Winds shifting to the W/WNW once the front passes. W/WNW wind speeds increasing to around 30 kts after midnight with gale force gusts of 35-40 kts. Seas increasing to 6-10 ft.

Thursday . High confidence

Strong westerly winds persist across the waters throughout the day with speeds between 25-30 kts. Should see gale force gusts around 40 kts. Seas between 6-10 ft.

Outlook /Thursday Night through Monday/ .

Thursday Night: Strong winds with gusts up to 35 kt. Rough seas up to 11 ft.

Friday: Strong winds with gusts up to 30 kt. Areas of rough seas.

Friday Night through Saturday: Winds less than 25 kt. Local rough seas.

Saturday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Chance of rain showers.

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

Sunday Night through Monday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 10 ft. Slight chance of rain showers.

FIRE WEATHER.

* Fire Weather Special Weather Statement (SPS) will be issued for both Thursday and Friday.

Strong W winds are anticipated on Thursday in wake of the system exiting the region. The strong mixing will bring dry conditions for much of the CWA with minimum relative humidities between 25-35 percent. Should see gusts around 40-45 mph at times this in combination with the relative humidities may bring elevated fire weather concerns. This will be impacted by the precipitation that falls across southern New England today.

The pressure gradient remains tight with dry weather on Friday. Minimum relative humidities range between 25-40 percent once again with gusts around 30 mph at times. Therefore, this will be another day where there could be potential elevated fire weather concerns.

Have reached out to the fire weather partners and it is decided that a Fire Weather SPS will be issued for both Thursday and Friday.

BOX WATCHES/WARNINGS/ADVISORIES. CT . Freeze Warning from 10 PM this evening to 6 AM EDT Thursday for CTZ002>004. MA . Freeze Watch from Thursday evening through late Thursday night for MAZ013-017-018. RI . Freeze Warning from 10 PM this evening to 6 AM EDT Thursday for RIZ001-003. MARINE . Gale Warning from 4 AM Thursday to 2 AM EDT Friday for ANZ231>235-237-250-251. Gale Warning from 6 AM Thursday to 2 AM EDT Friday for ANZ230- 236. Gale Warning from 2 AM Thursday to 2 AM EDT Friday for ANZ254>256.

SYNOPSIS . Chai/KS NEAR TERM . Chai SHORT TERM . LONG TERM . Chai/KS AVIATION . Chai/KS MARINE . Chai/KS FIRE WEATHER .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 0 mi49 min S 14 G 20 59°F 999.9 hPa
FRVM3 - 8447386 - Fall River, MA 1 mi49 min 60°F 52°F1000.4 hPa
FRXM3 1 mi49 min 59°F 54°F
CPTR1 - 8452944 - Conimicut Light, RI 9 mi49 min 53°F 52°F999.2 hPa
NAXR1 - Narragansett Bay Reserve, RI 10 mi94 min SSW 7 56°F 1001 hPa52°F
PRUR1 10 mi49 min 54°F 52°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 10 mi49 min SSW 5.1 G 11 54°F 1000.3 hPa
PVDR1 12 mi49 min SSE 13 G 16 55°F 1000 hPa55°F
FOXR1 - 8454000 - Providence, RI 14 mi49 min S 9.9 G 12 55°F 51°F999.9 hPa
QPTR1 - 8454049 - Quonset Point, RI 15 mi49 min S 14 G 17 52°F 50°F999.8 hPa
NWPR1 - 8452660 - Newport, RI 16 mi49 min S 9.9 G 14 53°F 50°F999.8 hPa
BUZM3 - Buzzards Bay, MA 23 mi19 min S 21 G 22 1000.1 hPa (-4.3)
BZBM3 - 8447930 - Woods Hole, MA 29 mi49 min 55°F 50°F1000.5 hPa
WAXM3 - Waquoit Bay Reserve, MA 35 mi94 min SE 4.1 58°F 1002 hPa55°F
44090 45 mi23 min 47°F2 ft
BHBM3 - 8443970 - Boston, MA 45 mi49 min 58°F 998.7 hPa

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Bedford, New Bedford Regional Airport, MA11 mi26 minSSW 16 G 2310.00 miMostly Cloudy59°F52°F78%999.6 hPa
Newport, Newport State Airport, RI13 mi26 minS 12 G 198.00 miOvercast53°F50°F89%999.2 hPa
Providence, Theodore Francis Green State Airport, RI14 mi28 minSSE 810.00 miOvercast58°F52°F81%999.3 hPa
N. Kingston / Quonset, RI15 mi29 minS 138.00 miOvercast55°F52°F88%999.3 hPa
Taunton, Taunton Municipal Airport, MA15 mi27 minSSE 810.00 miOvercast61°F50°F67%999.4 hPa
Pawtucket, North Central State Airport, RI18 mi23 minVar 59.00 miMostly Cloudy54°F54°F100%999.6 hPa

Link to 5 minute data for KEWB

Wind History from EWB (wind in knots)
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1 day agoSW10SW7SW8SW6W5W3W3CalmCalmCalmCalmCalmCalmCalmCalmSW6SW8SW10
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2 days agoSW6SW6CalmW6W3SW5CalmCalmCalmCalmCalmCalmCalmCalmCalm4N4--4S8
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Tide / Current Tables for Fall River, State Pier, Narragansett Bay, Rhode Island
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Fall River
Click for Map
Wed -- 03:15 AM EDT     Moonset
Wed -- 03:46 AM EDT     3.83 feet High Tide
Wed -- 05:55 AM EDT     Sunrise
Wed -- 08:50 AM EDT     0.65 feet Low Tide
Wed -- 01:01 PM EDT     Moonrise
Wed -- 04:22 PM EDT     3.67 feet High Tide
Wed -- 07:32 PM EDT     Sunset
Wed -- 09:15 PM EDT     0.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.73.23.73.83.42.51.50.80.70.81.11.522.63.33.63.52.91.910.70.71

Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Wed -- 02:17 AM EDT     1.49 knots Max Flood
Wed -- 03:14 AM EDT     Moonset
Wed -- 04:21 AM EDT     -0.00 knots Slack
Wed -- 05:55 AM EDT     Sunrise
Wed -- 06:48 AM EDT     -2.28 knots Max Ebb
Wed -- 10:32 AM EDT     0.00 knots Slack
Wed -- 01:02 PM EDT     Moonrise
Wed -- 02:42 PM EDT     1.93 knots Max Flood
Wed -- 04:59 PM EDT     -0.00 knots Slack
Wed -- 07:22 PM EDT     -2.25 knots Max Ebb
Wed -- 07:31 PM EDT     Sunset
Wed -- 11:31 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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0.71.11.51.30.5-0.9-2-2.3-1.8-1.1-0.30.30.81.41.81.91.3-0-1.4-2.2-2.1-1.5-0.9-0.3

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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