Saturday, February27, 2021
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Marine Weather and Tides
South Hooksett, NH

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 6:22AMSunset 5:34PM Saturday February 27, 2021 5:14 AM EST (10:14 UTC) Moonrise 7:01PMMoonset 7:58AM Illumination 100% Phase: Full Moon; Moon at 15 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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ANZ230 Boston Harbor- 416 Am Est Sat Feb 27 2021
Today..SE winds 10 to 15 kt, becoming S 15 to 20 kt this afternoon. Gusts up to 25 kt. Waves 2 to 4 ft. Patchy fog. Rain. A chance of snow this morning. Vsby 1 to 3 nm this afternoon.
Tonight..W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 nm.
Sun..W winds around 5 kt, becoming se in the afternoon. Waves 1 foot or less. A chance of rain.
Sun night..SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A chance of rain. Vsby 1 nm or less.
Mon..W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 nm.
Mon night..NW winds 15 to 20 kt. Gusts up to 25 kt, increasing to 35 kt after midnight. Waves around 2 ft.
Tue through Wed night..W winds 15 to 20 kt with gusts up to 35 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. 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 Sat Feb 27 2021
Synopsis for massachusetts and rhode island coastal waters.. Broad low crosses the waters late today. High pressure briefly builds in tonight. Another system moves in on Sunday and its cold front passes through the waters on Monday. High pressure builds in Tuesday into Wednesday. 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 South Hooksett, NH
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location: 43.01, -71.38     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 270900 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 400 AM EST Sat Feb 27 2021

SYNOPSIS. A quick moving system will move out of the Ohio Valley today and bring a round of mixed precipitation to the area. Snow to a mix inland and snow to rain near the coast is most likely. An even weaker system will cross the area Sunday night with snow and rain showers. We will see very mild temperatures on Monday before an Arctic cold front will blast through the area in the late afternoon or evening. Temperatures on Tuesday will top out in the teens and 20s along with gusty winds. Broad high pressure over the eastern U.S. beyond Tuesday should keep our region mostly dry with seasonable temperatures through Friday.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A rather weak, but complex weather system will enter the region today. Plenty of cold air in place in most areas to allow the precipitation to begin as snow this morning. However, temperatures have skyrocketed along the coast with readings jumping from the upper teens to lower 20s to the 30s in one hours time. In Rockland in particular, the temperature rose from 18 degrees Fahrenheit at 06Z to 31 degrees at 07Z. The NERACOOS climatology does show some record warm water temperatures for this time of the year off the Midcoast region and this is playing a role in the warm up, let alone the lack of high pressure across the interior. These temperatures may fall back again this morning with the onset of precipitation due to the impacts of wet bulbing.

Snow will progress northwards today. For inland areas, have forecast lower than most available guidance as cold temperatures will remain locked in the valley locations. The latest HREF does indicate pockets of freezing rain across much of western and northern New Hampshire as well as the mountains and foothills of Maine today. Accumulating snow and the possibility of freezing rain has increased and Winter Weather Advisories will be issued across northern and western portions of our forecast area. In the south, probabilistic data plots suggest mainly a snow to rain scenario with little snow right along the immediate coast.

As the warm air invades the forecast area, fog will form over the frozen ground and snow pack. The precipitation should exit the region late in the day or during the evening hours per the latest HRRR.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/. The precipitation will shift east of the region this evening. As low pressure shifts to our east and drier air pushes in from the west, the fog will tend to dissipate. With H8 temperatures approaching 0C during the day in some areas and sunshine during the morning hours, expect temperatures to climb into the 40s. Clouds then increase during the midday and afternoon hours as the next weather system approaches from the west.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. Overview . Rain and snow showers will be possible at times from Sunday night through Tuesday morning as a couple of frontal systems cross the region. Overall, any liquid and/or snow accumulations are expected to be light. After a brief spell of below normal temperatures Tuesday after a warm day Monday, temperatures return to near to slightly above normal levels for the rest of the week. Widespread precipitation continues to look unlikely beyond Tuesday.

Impacts . Generally warmer temperatures over the long term will allow for some melting to take place, but without any accompanying significant precipitation, any rises on area rivers should be modest. There is some low-end potential for heavier snow squalls amongst any snow showers late Monday into Monday night.

Forecast Details . The first half of the long term continues to look unsettled. By Sunday evening, an area of low pressure and accompanying shortwave are expected to be located over the northern Great Lakes and then push east toward New England Sunday night. Light rain/snow showers will gradually spread eastward across our region Sunday night as a result. Any snowfall accumulation should be limited to the higher elevations and far northern zones with rainfall expected elsewhere.

Early Monday afternoon sees the arrival of an Arctic front after the previously mentioned area of low pressure moves off the coast. Any precipitation on Monday looks to be limited to portions of western ME and the mountains . but the Arctic frontal passage could drag some snow showers down toward the coastal plain late Monday afternoon into the evening. There is some potential for a few heavier snow showers with the frontal passage, and possibly a squall or two . so will continue to assess that possibility over the next couple of forecast packages. Overall, only very light liquid and snow accumulations are expected on Monday.

A second shortwave crosses the region Monday night with additional snow showers and with light snowfall accumulations possible. The colder air is now in place for Tuesday . where highs will be some 20 degrees or so cooler for many compared to Monday. Winds are also expected to gust in the 30-35 mph range Tuesday afternoon.

The rest of the long term period looks rather quiet as far as precipitation with some slight chances for showers in southern NH on Wednesday the only notable exception. Do also have some slight chance PoPs for Friday, but the global models remain in disagreement on the pattern for the latter half of next week. However, temperatures are expected to rebound to near to slightly above normal levels after the brief incursion of Arctic air on Tuesday.

AVIATION /08Z SATURDAY THROUGH WEDNESDAY/. Short Term . VFR conditions will hold through early this morning away from the coast before clouds quickly lower and ceiling become MVFR as snow begins. Snow will mix with and then change to rain across the south with a mix of IFR and MVFR conditions. Snow and mixed precipitation will continue over northern areas. By late afternoon, the precipitation will begin to end but moisture will linger. During the afternoon and especially after sunset this moisture over the cold snowpack will lead to the rapid onset of fog with LIFR conditions in some areas. Drier air will begin to push in from the NW and northern locations may lift to MVFR by morning. After sunrise the rest of the area will follow suit.

Long Term . Widespread MVFR conditions expected Sunday night through Monday night with periods of IFR conditions possible in rain/snow showers. Conditions improve for Tuesday morning, but winds then become gusty out of the northwest through Tuesday evening. Widespread VFR conditions expected Tuesday night into Wednesday.

MARINE. Short Term . A rather complex set of hazards remain in effect for the coastal waters with this latest system. Southern winds with a good fetch off the open Gulf of Maine may allow for gale force winds along the Midcoast today and this evening where we have opted for gale warnings to be hoisted. Elsewhere, winds may gust to 30 knots where SCAs will be in effect through tonight. The exception will be Casco Bay where SCAs are only for this afternoon. Patchy fog expected this afternoon into this evening prior to the wind shift to the west. Winds and seas subside Sunday.

Long Term . Seas over the outer waters are expected to be in the 4-5 ft range Sunday night and continue to build above 5 ft into Monday. Gusts to 25 kt begin Monday afternoon and continue into Monday night . when a period of gale force gusts is expected to begin and continue into Tuesday. Even the bays look to meet SCA criteria Monday night into Tuesday. Light to moderate freezing spray is also expected on Tuesday. While the winds will diminish on Wednesday, seas will likely remain in the 4-5 ft range over the outer waters through Wednesday night.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Winter Weather Advisory from 10 AM this morning to 7 PM EST this evening for MEZ007>009-012>014. NH . Winter Weather Advisory from 7 AM this morning to 5 PM EST this afternoon for NHZ005>009-011-015. Winter Weather Advisory from 10 AM this morning to 7 PM EST this evening for NHZ001>004. MARINE . Small Craft Advisory from 1 PM to 5 PM EST this afternoon for ANZ153. Small Craft Advisory from 1 PM this afternoon to 5 AM EST Sunday for ANZ151-152-154. Gale Warning from 1 PM this afternoon to 5 AM EST Sunday for ANZ150.



NEAR/SHORT TERM . Cannon LONG TERM . Watson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 29 mi150 min S 1.9 30°F 1031 hPa26°F
CMLN3 36 mi191 min S 11 31°F 40°F
IOSN3 - Isle of Shoals, NH 40 mi75 min S 20 G 21 36°F 1030.2 hPa (-1.2)28°F
44073 45 mi191 min SSW 19 G 23 38°F 39°F
WELM1 - 8419317 - Wells, ME 48 mi57 min SW 6 G 7 31°F 38°F1030.7 hPa
BHBM3 - 8443970 - Boston, MA 49 mi63 min 33°F 37°F1029.6 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manchester Airport, NH6 mi22 minWNW 310.00 miPartly Cloudy25°F20°F81%1031.4 hPa
Concord Municipal Airport, NH15 mi24 minN 010.00 miFair20°F17°F89%1030.2 hPa
Nashua - Boire Field Airport, NH17 mi19 minWNW 510.00 miFair21°F21°F100%1031.1 hPa
Lawrence Municipal Airport, MA24 mi21 minSE 310.00 miA Few Clouds31°F25°F79%1030.9 hPa

Link to 5 minute data for KMHT

Wind History from MHT (wind in knots)
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Last 24hrNW5NW7N6NW9NW9NW7NW8N7N5Calm6NW4SE4E5SE9SE6E3CalmE3S3CalmCalmCalmW3
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Tide / Current Tables for Squamscott River RR. Bridge, New Hampshire
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Squamscott River RR. Bridge
Click for Map
Sat -- 12:59 AM EST     6.98 feet High Tide
Sat -- 03:19 AM EST     Full Moon
Sat -- 06:22 AM EST     Sunrise
Sat -- 06:56 AM EST     Moonset
Sat -- 07:18 AM EST     -0.10 feet Low Tide
Sat -- 01:10 PM EST     7.92 feet High Tide
Sat -- 05:30 PM EST     Sunset
Sat -- 05:59 PM EST     Moonrise
Sat -- 07:50 PM EST     -0.71 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.576.65.53.820.6-0.10.21.43.45.57.27.97.66.54.82.70.8-0.4-0.701.73.9

Tide / Current Tables for Dover Point, Piscataqua River, New Hampshire
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Dover Point
Click for Map
Sat -- 12:13 AM EST     6.52 feet High Tide
Sat -- 03:19 AM EST     Full Moon
Sat -- 06:04 AM EST     -0.09 feet Low Tide
Sat -- 06:22 AM EST     Sunrise
Sat -- 06:56 AM EST     Moonset
Sat -- 12:24 PM EST     7.39 feet High Tide
Sat -- 05:30 PM EST     Sunset
Sat -- 05:59 PM EST     Moonrise
Sat -- 06:36 PM EST     -0.67 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.56.35.23.61.80.4-0.10.31.43.256.67.37.26.34.52.40.6-0.5-0.60.21.73.65.4

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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.