Friday, April3, 2020
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Marine Weather and Tides
Porters Neck, NC

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 6:53AMSunset 7:35PM Friday April 3, 2020 12:04 AM EDT (04:04 UTC) Moonrise 1:35PMMoonset 3:07AM Illumination 76% 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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AMZ250 Coastal Waters From Surf City To Cape Fear Nc Out 20 Nm- 1015 Pm Edt Thu Apr 2 2020
Overnight..NW winds 10 to 15 kt, increasing to 15 to 20 kt late. Seas 2 to 3 ft.
Fri..NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri night..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Sat..N winds 10 to 15 kt, becoming ne 5 to 10 kt in the afternoon. Seas 3 to 4 ft.
Sat night..NE winds 5 to 10 kt. Seas 3 to 4 ft.
Sun..NE winds 5 to 10 kt, becoming s. Seas 3 to 4 ft.
Mon..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers through the night.
Tue..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
AMZ200 1015 Pm Edt Thu Apr 2 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. An expansive north atlantic low will help keep active nw winds across the waters through Friday. Improving wind conditions expected late Friday through Sunday, as high pressure settles over the area waters. Long period easterly swell from the expansive north atlantic low, will peak across the waters during this weekend. Moderate sw winds Monday and Tuesday, ahead of weak low pressure approaching.


7 Day Forecast for Marine Location Near Porters Neck, NC
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location: 34.29, -77.75     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 030220 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 1020 PM EDT Thu Apr 2 2020

SYNOPSIS. High pressure will build in from the north for the remainder of the week and into the weekend. A warmup will begin next week as it shifts offshore. Some late week rain chances could materialize with the arrival of a weak front.

UPDATE. Forecast updated to remove mention of patchy frost, as overnight temp forecasts were raised a bit and now not low enough to warrant frost mention.

NEAR TERM /THROUGH FRIDAY NIGHT/. If you're a fan of sunny spring weather where crisp mornings transition into mild afternoons with climbing sun angle, then the days upcoming you will not want to miss. The clear skies and dry air will highly promote efficiency in radiational cooling. Following a chilly start, relative humidity will dip to 24-29 percent most areas Friday afternoon, co-joined with gusty NW winds. This brings an elevated fire danger, and even though the ground remains soggy in spots, fine fuels and grasses will become capable of fire spread, as they are quick to dry.

Subsident drying lowers in the column Friday, so we may not see any clouds other than thin cirrus, unlike today where residual 850 mb vapor cooked up some afternoon cumulus. Dewpoints will lower into Friday lending to drier conditions, with 10-meter winds a few knots stronger tomorrow.

SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/. A fairly weak gradient in place through the short term with local light northerly winds still arguably from the stalled nor'easter, at least initially. Saturday night a small/weak high builds in from the north turn flow slightly more onshore. The end result is near full sunshine on Saturday yet highs a few degrees below climo and a few clouds developing overnight with seasonable temps.

LONG TERM /SUNDAY THROUGH THURSDAY/. A flat ridge builds to our west beginning on Sunday but surface high pressure will be slow to form making our warmup a gradual one at first. Pressures do rise offshore on Monday however making for a more substantial boost to the warmth. The ridge aloft seems to weaken late in the period allowing a weak frontal boundary to drop into the area. The forecast will continue to show a gradual increase of POPs that overall do tend to remain low given the lack of any deep layer forcing while temperatures remain elevated above climo.

AVIATION /02Z FRIDAY THROUGH TUESDAY/. VFR through the 00Z TAF period. Winds diminish this evening, however they should stay up enough to keep fog at bay. Friday, more of the same with dry wx and sunny skies.

Extended Outlook . VFR conditions through the weekend. Flight restrictions possible for the early to mid week portion of next week.

MARINE. No Small Craft Advisories are needed this period, but conditions will be bumpy tonight and Friday with gusts to 20 kt common, because high pressure drops into Tennessee, and tightens the pressure gradient with the large oceanic low positioned offshore NE of the local waters. Caution is advised as choppy 4 feet seas form tonight in the blustery offshore wind. Inshore seas will likely be far more tranquil, but the 20 kt gusts will still be present throughout. The sea spectrum will be made up of offshore NW-N wind-sea every 3- 5 seconds, mixed with ENE waves 1-2 feet every 12-13 seconds, as back-swell from the mammoth low send back low amplitude ripples our way. Friday will maintain 20 kt gusts much of the day and caution is advised. Winds will begin an easing trend mid to late afternoon of Friday.

Increasingly light NE winds Saturday into Sunday as nor'easter finally starts to pull away and a weak high builds in from the north. There will still be some backswell from this system but most of it will stay outside of our 20nm forecast zones. In fact spectral wave bulletins show a 12-13 second wave for the entire forecast period being the dominant wave as the light winds will not generate a significant component to the dominant sea state. High pressure moves off the coast on Monday turning the wind to the SW.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . None.

SYNOPSIS . ILM UPDATE . MAS NEAR TERM . 08 SHORT TERM . mbB LONG TERM . mbB AVIATION . 08/MAS MARINE . MJC/MBB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
JMPN7 - 8658163 - Johnny Mercer Pier, Wrightsville Beach, NC 6 mi47 min W 5.1 G 7 56°F 60°F1012.5 hPa
41038 - ILM2 - 5 miles SE of Wrightsville Beach, NC 10 mi57 min WNW 12 G 18 59°F 62°F1012.8 hPa
41110 - Masonboro Inlet, NC 10 mi25 min 62°F2 ft
WLON7 12 mi47 min 53°F 64°F1013.1 hPa
41037 - ILM3 - 27 miles SE of Wrightsville Beach, NC 29 mi57 min WNW 14 G 19 65°F1011.6 hPa
41108 42 mi35 min 63°F3 ft
41064 43 mi57 min WNW 16 G 21 64°F 68°F1012.2 hPa
41159 43 mi35 min 68°F4 ft

Wind History for Wrightsville Beach, NC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington International Airport, NC9 mi2.2 hrsWSW 310.00 miFair55°F39°F57%1013.2 hPa

Link to 5 minute data for KILM

Wind History from ILM (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmW3N5NW6NW4NW6NW9N10N11
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N9N8NW4NE3Calm
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Tide / Current Tables for Wrightsville Beach, North Carolina
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Wrightsville Beach
Click for Map
Fri -- 03:47 AM EDT     3.94 feet High Tide
Fri -- 04:07 AM EDT     Moonset
Fri -- 06:55 AM EDT     Sunrise
Fri -- 10:21 AM EDT     -0.00 feet Low Tide
Fri -- 02:34 PM EDT     Moonrise
Fri -- 04:15 PM EDT     3.27 feet High Tide
Fri -- 07:34 PM EDT     Sunset
Fri -- 10:27 PM EDT     -0.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.42.43.33.83.93.632.11.20.400.10.61.52.333.33.22.71.910.2-0.3-0.2

Tide / Current Tables for Masonboro Inlet, North Carolina
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Masonboro Inlet
Click for Map
Fri -- 04:07 AM EDT     Moonset
Fri -- 04:10 AM EDT     3.94 feet High Tide
Fri -- 06:55 AM EDT     Sunrise
Fri -- 10:59 AM EDT     0.41 feet Low Tide
Fri -- 02:35 PM EDT     Moonrise
Fri -- 04:46 PM EDT     3.48 feet High Tide
Fri -- 07:34 PM EDT     Sunset
Fri -- 11:17 PM EDT     0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.22.133.73.93.83.32.61.81.10.60.40.71.42.22.93.43.53.22.61.91.10.50.2

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wilmington, NC (0,6,7,8)
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Ground Weather Radar Station Morehead City, NC
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weather_mapweather_map weather_map

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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.