Tuesday, December10, 2019
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Marine Weather and Tides
North Woodstock, NH

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

Sunrise 7:06AMSunset 4:11PM Tuesday December 10, 2019 5:08 PM EST (22:08 UTC) Moonrise 4:21PMMoonset 6:14AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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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ANZ153 Casco Bay- 318 Pm Est Tue Dec 10 2019
Tonight..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Scattered showers this evening, then a chance of snow and rain after midnight with vsby 1 to 3 nm.
Wed..N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. A chance of snow in the morning with vsby 1 to 3 nm.
Wed night..SW winds 10 to 20 kt, becoming W 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft.
Thu..NW winds 5 to 15 kt with gusts up to 25 kt, becoming 5 to 10 kt in the afternoon. Seas 2 to 4 ft, subsiding to 1 to 2 ft in the afternoon.
Thu night..W winds around 5 kt, becoming sw after midnight. Seas 1 foot or less, then 1 to 2 ft after midnight.
Fri..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri night..SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of rain in the evening, then rain after midnight.
Sat..SE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. Rain.
Sat night..SW winds 5 to 10 kt. Seas 4 to 7 ft. Rain likely.
Sun..W winds 10 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers.
Sun night..W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.
ANZ100 318 Pm Est Tue Dec 10 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front crosses this evening. Some snow, mainly light, is possible over the waters tonight into Wednesday morning before clearing. Thereafter, a potentially potent low pressure system will approach Friday and may affect the waters over the weekend. &&


7 Day Forecast for Marine Location Near North Woodstock, NH
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location: 43.93, -71.58     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 102041 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 341 PM EST Tue Dec 10 2019

SYNOPSIS. A cold front will cross the area overnight with colder and drier air moving into the region. A weak storm system will pass well offshore overnight, and while it will spread snow to the northwest of its track it looks to remain too far southeast. Wednesday will see clearing but cold temperatures, with highs barely reaching freezing. An active weather pattern looks to continue this weekend with low pressure moving up the coast delivering another chance of heavy rainfall.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/. Areas of rain showers continue to move N along the approaching front. This will continue likely to categorical PoP for areas S of the mtns thru the evening. MWN is already cooling off with W flow commences . with 30 degrees and freezing rain reported this hour Gradually cooling of the column will continue. with some flakes possible as precip winds down this evening.

Low level NW flow and drier air will begin to filter into the forecast area tonight. Strong jet aloft and approaching S/WV trof will help to amplify a weak wave along the trailing cold front. This will enhance precip on the cold side of the front. Forecast soundings show a pretty large area of dry air below H7 . despite saturation and lift thru the snow growth zone. Given the expected evaporation and below cloud drift of precip . I have cut snow totals back to generally an inch or less across coastal Wrn ME . and far Srn NH. Some of the higher resolution guidance has even less snowfall than that. That being said the mid level frontogenesis will be strong . I just expect a narrow band that remains to our S.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH WEDNESDAY NIGHT/. Will continue to see clearing into the afternoon Wed. The main story will be much colder temps than today. Highs will top out around freezing . some 20 degrees cooler than highs this afternoon. A reinforcing cold front will arrive late in the day Wed . with snow showers along the front. Some of these could be squally in nature . but overall it should mainly stay upslope snow shower regime. Some light accumulations are possible before approaching ridge brings an end to upslope. Surface axis arrives late . so Wrn zones may see good radiational cooling. I have edged those valleys down a couple degrees from guidance as a result.

LONG TERM /THURSDAY THROUGH TUESDAY/. Cold high pressure crests over the region on Thursday as high temperatures remain in the 20s to teens south to north. Thursday night will be the coldest of the week with many spots dropping to the single digits. Trend since yesterday has been slightly warmer on the low temperatures, but have still persisted on the cold side of the guidance, especially for the mountain valleys as the set up looks favorable for radiational cooling.

The next system will move up the east coast Friday night into Saturday morning. Spread on the low location remains quite wide with everywhere from up the St. Lawrence to as far east as the benchmark in play. Ensemble sensitivity shows that much of this variability is due to the placement of the short wave expected to move around the 500mb trough and help to enhance cyclogenesis on Friday. Will likely be another 24 hours or so before we can really start to get some confidence in the surface low track however a warm system, at least aloft, is quite likely and have continued with the rain or snow wording with any frozen precipitation being confined to the north.

Too early still for high confidence in rainfall amounts with this system but certain widespread over an inch with two inches possible. With the track of the low up the east coast it allows significant moisture to flow up from the Gulf of Mexico with PWAT reaching up to 2 standard deviations above normal for this time of year. This combination of rain on the now ripening snowpack will lead to good runoff and the potential for flooding will need to be closely monitored.

Westerly flow takes hold for the second part of the weekend with some upslope showers and clouds likely continuing into the start of next week.

AVIATION /20Z TUESDAY THROUGH SUNDAY/. Short Term /Through Wednesday/ . Most of the area has improved to VFR conditions this afternoon . but precip approaching ahead of advancing cold front will continue localized areas of MVFR or lower in SHRA. Cold front moving into the area will help dry out the low levels . lifting CIGs and bringing an end to SHRA. Will likely see a little bit of upslope cloud cover near HIE . so MVFR CIGs may linger there into the overnight. Very bearish about -SN overnight . so have no more than PROB30 for coastal terminals. VFR Wed.

Long Term . High pressure will build in through Thursday with widespread VFR holding through Friday. Another low will track up the eastern seaboard bringing widespread rain to the area Friday into Saturday.

MARINE. Short Term /Through Wednesday/ . Winds have dropped below SCA thresholds at this time . but seas remain hazardous outside the bays. With cold front crossing the waters tonight winds are expected to pick back up with gusts 25 to 30 kts thru morning. I have extended the SCA for all but Casco Bay thru that time. There may be another lull Wed before another cold front crosses the waters with an increase in winds and building seas.

Long Term . High pressure will build over the waters for Thursday. Another low will move up the eastern seaboard with Gales possible in the Gulf of Maine on Friday night into Saturday.

HYDROLOGY. Melt from the past few days of rain has lead to modest rises on area rivers, with NOHRSC estimates indicating up to 2 inches of SWE lost across southern NH. This leaves much of the southern portion of NH snow free. Another system with the potential for 1-2 inches of rain will move through Friday night into Saturday. Most of the rainfall for the Saturday will be runoff across the south with southern NH rivers again seeing the potential for flooding. Further north, into the White Mountains snowpack remains in place and even a rain on snow scenario will likely serve to mostly moisten the snowpack with minimal runoff and less chance for flooding.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 5 AM EST Wednesday for ANZ150>152- 154.



NEAR TERM . Legro SHORT TERM . Legro LONG TERM . Curtis AVIATION . Curtis/Legro MARINE . Curtis/Legro HYDROLOGY . Curtis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WEXM1 - Wells Reserve, ME 68 mi69 min SSW 8.9 55°F 50°F
WELM1 - 8419317 - Wells, ME 68 mi51 min WSW 7 G 12 54°F 45°F1005.4 hPa
BGXN3 - Great Bay Reserve, NH 72 mi84 min SW 4.1 54°F 1006 hPa49°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plymouth Municipal Airport, NH14 mi74 minWNW 610.00 miLight Rain47°F43°F89%1005.4 hPa

Link to 5 minute data for K1P1

Wind History from 1P1 (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW3
1 day agoCalmE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW5W3CalmCalmE4W3CalmW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalmCalm

Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
Click for Map
Tue -- 05:02 AM EST     0.70 feet Low Tide
Tue -- 05:09 AM EST     Moonset
Tue -- 07:04 AM EST     Sunrise
Tue -- 10:59 AM EST     7.25 feet High Tide
Tue -- 03:19 PM EST     Moonrise
Tue -- 04:07 PM EST     Sunset
Tue -- 05:37 PM EST     0.10 feet Low Tide
Tue -- 11:31 PM EST     6.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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653.52.11.10.71.12.345.76.87.26.95.84.22.51.10.20.20.92.44.15.66.4

Tide / Current Tables for Dover Point, Piscataqua River, New Hampshire
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Dover Point
Click for Map
Tue -- 04:37 AM EST     0.65 feet Low Tide
Tue -- 05:09 AM EST     Moonset
Tue -- 07:03 AM EST     Sunrise
Tue -- 10:57 AM EST     6.77 feet High Tide
Tue -- 03:20 PM EST     Moonrise
Tue -- 04:08 PM EST     Sunset
Tue -- 05:12 PM EST     0.09 feet Low Tide
Tue -- 11:29 PM EST     6.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.54.42.91.60.80.71.32.545.56.56.86.45.23.61.90.70.10.31.22.64.25.46

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (17,4,5,8)
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Ground Weather Radar Station Portland, ME
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