Sunday, April5, 2020
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Marine Weather and Tides
Canaan, NH

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 6:17AMSunset 7:19PM Sunday April 5, 2020 12:29 AM EDT (04:29 UTC) Moonrise 4:19PMMoonset 5:26AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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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7 Day Forecast for Marine Location Near Canaan, NH
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location: 43.68, -72.08     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 050250 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 1050 PM EDT Sat Apr 4 2020

SYNOPSIS. The area will remain stuck between two slow moving systems this weekend. While not perfectly sunny, the weather will be fair and mild, especially away from the coast. A cold front will approach late Sunday with some scattered showers possible. Fair weather returns Monday and Tuesday. Wet weather and perhaps even some wintry weather may reenter the picture Wednesday into late week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. 1045 PM . Forecasts till in good shape. There was about an hour good rad cooling right after sunset in clear spots, mainly on the ME coastal plain and temps dropped quickly in a few spots, but with clouds filling in, this will limit any further drops, buit mins are a few degrees lower in some of these areas.

7 PM . Just a few adjustments to temps and sky based on current conds, but nothing that significantly changes the forecast. While some of the diurnal clouds will diminish early this evening, should see the weak onshore flow produce some coastal stratus later this evening, so any clearing near the the coast will be brief.

Previously . Upper level ridging is beginning to roll overhead as low pressure turns more sharply out to sea now. I think we will see diurnally driven clouds scatter out a bit around sunset . but flow becoming onshore and nocturnal cooling will begin to expand cloud cover once again overnight. Aside from a few sprinkles in the higher terrain of NH late this afternoon it should stay dry tonight . with temps fairly mild for this time of year.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. A weak cold front will approach from the W Sun. Developing SW flow away from the coast will keep things mild . but more Sly flow over Wrn ME will keep things at or below 50 for much of the day. Mainly isolated to scattered showers are expected along the front itself . with most of those in the Nrn zones closer to the best forcing for ascent. Temps may cool enough in the mtns to dust the ground with snow.

Gradual CAA will occur overnight but for the most part S of the terrain the front will wait until Mon to mix down to the surface.

LONG TERM /MONDAY THROUGH SATURDAY/. The week will begin with a fairly high amplitude pattern over the Pacific as a ridge builds into the Gulf of Alaska, and low dips southwards toward California. While flow across the eastern portion of the CONUS remains zonal, as we move into the latter half of the week the trough over the southwest will begin to progress, and, in combination with a developing wave over James bay, allow for another round of precipitation to enter our region.

Monday will see northwesterly flow continue through the area in the wake of a departing frontal system from the weekend. This west flow will be enough to keep the ocean influence at bay, allowing temperatures to climb into the 60s across the southern portion of the region right down to the beaches.

The flow will relax slightly on Tuesday, allowing for some seabreeze to develop but still overall sunny conditions and mild temperatures are expected.

By Wednesday we start to see short waves develop moving out of the Great Lakes. A weak system looks to pass just south of our area, spreading precipitation through New Hampshire and into Southern Maine. with the source region being the canadian prairies and forcing quite light don't expect much in terms of accumulations.

On Thursday the upper level trough begins to shift east allowing for a stronger system to approach the region. This will bring the potential for heavier rain, as southerly flow ahead of a cold front brings moisture to the region. Have stuck with a model consensus for timing here, but with the upper low driving this arrival time would not be surprised to see it slip later into Thursday night.

AVIATION /03Z SUNDAY THROUGH THURSDAY/. Short Term /Through Sunday Night/ . A push of drier air and daytime heating have pushed CIGs above 3000 ft for the time being. I expect VFR conditions to continue into the evening before nocturnal cooling and flow becoming more onshore help CIGs lower once again. Model guidance is quite bullish on widespread MVFR and some IFR tonight . but I am keeping things MVFR in the forecast with N flow offshore keeping deeper moisture at bay A weak front will approach from the W Sun. and I do expect some scattering out of MVFR CIGs. SHRA should be isolated to scattered at most.

Long Term . VFR conditions with light northwesterly flow to start the week. A disturbance passing south of the region on WEdnesday will bring some clouds, possibly lowering to MVFR along the south. Thursday a cold front will cross the region with a brief period of IFR likely.

MARINE. Short Term . Winds continue to trend lighter . but seas remain above 10 ft and are only slowly diminishing. I expect hazardous seas to linger outside the bays thru Sun night. They will likely drop below 5 ft first N of Port Clyde. I have extended the SCA thru Sun afternoon . with the only expected hazard to be seas.

Long Term . Light northwesterly flow and calm seas for the start of the week. Another weak disturbance will pass south of the waters on Wednesday. Thursday will see increasing southerly flow ahead of a cold front passing Thursday night with SCA likely.

HYDROLOGY. A combination of snow melt and run off from yesterday's rainfall has resulted in minor flooding on the Kennebec river. At Skowhegan, flow peaked this morning at 39 kcfs and has dropped below flood stage by 3pm. Further downstream, the crest has arrived at North Sidney where the river will remain at Action stage. In Augusta, high tide got the river levels within 0.1ft of flood stage, with the parking lots along front street starting to see water, but has since begun to recede. The flood wave peak is expected to reach Augusta before the next high tide keeping conditions below flood.

TIDES/COASTAL FLOODING. Astronomical tides will peak late next week. As such tides will remain high and the gradually diminishing swell will combine to continue some splashover at particularly vulnerable east facing beaches. With an active storm track expected for the next seven days we cannot rule out some coastal flood issues late next week as tides max out above 11.5 ft at Portland.

EQUIPMENT. The last GYX upper air observation was March 25 at 12Z. Unfortunately, a disruption in gas supply has temporarily halted observations from GYX. The order has been placed but a date of delivery remains TBD.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 5 PM EDT Sunday for ANZ150-152-154.

SYNOPSIS . NEAR TERM . Cempa/Legro SHORT TERM . Legro LONG TERM . Curtis AVIATION . Curtis/Legro MARINE . Curtis/Legro HYDROLOGY . TIDES/COASTAL FLOODING . EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WELM1 - 8419317 - Wells, ME 84 mi59 min SW 1.9 G 1.9 39°F 43°F1017.6 hPa
WEXM1 - Wells Reserve, ME 85 mi89 min Calm 39°F 37°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lebanon Municipal Airport, NH12 mi36 minN 010.00 miFair38°F35°F89%1016 hPa
Plymouth Municipal Airport, NH19 mi34 minN 010.00 miFair37°F36°F97%1015.9 hPa

Link to 5 minute data for KLEB

Wind History from LEB (wind in knots)
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Last 24hrCalmCalmW4CalmCalmCalmCalmCalmCalmE3W5Calm6W4N4CalmCalmCalmN3CalmNE7CalmCalmCalm
1 day agoN3CalmCalmCalmCalmCalmNE5CalmCalmN4N7N9N10N4N5N5N6NE5CalmCalmCalmCalmCalmNW4
2 days agoN5N6N7N5NW7N7N10N10N16
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Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
Click for Map
Sun -- 04:52 AM EDT     0.28 feet Low Tide
Sun -- 05:19 AM EDT     Moonset
Sun -- 06:17 AM EDT     Sunrise
Sun -- 10:51 AM EDT     7.64 feet High Tide
Sun -- 04:14 PM EDT     Moonrise
Sun -- 05:29 PM EDT     -0.39 feet Low Tide
Sun -- 07:14 PM EDT     Sunset
Sun -- 11:27 PM EDT     7.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.14.83.21.60.60.30.92.34.26.17.37.67.15.94.12.10.6-0.3-0.30.82.64.66.47.3

Tide / Current Tables for Squamscott River RR. Bridge, New Hampshire
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Squamscott River RR. Bridge
Click for Map
Sun -- 05:19 AM EDT     Moonset
Sun -- 05:41 AM EDT     0.28 feet Low Tide
Sun -- 06:17 AM EDT     Sunrise
Sun -- 11:35 AM EDT     7.64 feet High Tide
Sun -- 04:15 PM EDT     Moonrise
Sun -- 06:18 PM EDT     -0.39 feet Low Tide
Sun -- 07:15 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.75.84.52.81.40.50.31.12.74.76.57.57.66.95.53.61.70.3-0.4-0.11.135.16.7

Weather Map
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wmap_A
GEOS Local Image of    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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Wind Forecast for Gray/Portland, ME (0,6,7,8)
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Ground Weather Radar Station Portland, ME
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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.