Friday, August7, 2020
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Marine Weather and Tides
Calabash, 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 6:31AMSunset 8:11PM Friday August 7, 2020 2:33 PM EDT (18:33 UTC) Moonrise 9:45PMMoonset 9:05AM Illumination 85% Phase: Waning Gibbous; Moon at 18 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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AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 1038 Am Edt Fri Aug 7 2020
Rest of today..S winds 5 to 10 kt. Seas 2 ft.
Tonight..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms after midnight.
Sat..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sat night..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sun..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun night..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms in the evening.
Mon..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Tue..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms.
AMZ200 1038 Am Edt Fri Aug 7 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure offshore and a piedmont trough inland will produce light winds through the weekend into early next week. Scattered Thunderstorms will remain the main marine weather hazard.


7 Day Forecast for Marine Location Near Calabash, NC
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location: 33.86, -78.57     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 071727 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 125 PM EDT Fri Aug 7 2020

SYNOPSIS. High pressure offshore and a weak trough of low pressure stalled across the inland Carolinas will maintain warm and humid conditions with scattered showers and thunderstorms through the middle of next week.

UPDATE/. No changes to the forecast at this time.

NEAR TERM /THROUGH SATURDAY/. Much like yesterday, deep southwesterly flow continues across the Carolinas out ahead of a mid level trough extending from Tennessee through Alabama. The airmass remains warm, humid, and very unstable with CAPE values expected to reach 3000 J/kg later today. A 250 mb jet streak moving off the Delmarva coast and a subtle 500 mb disturbance moving northward across South Carolina is already developing showers and thunderstorms at 3 AM. This activity should continue to lift northeastward through 7-8 AM. There should be a lull in convection later in the morning with sunshine quickly boosting temperatures through the 80s. This will burn off any remaining shreds of early morning fog or low stratus. By early to mid afternoon, new convection should begin developing inland of the seabreeze boundary. Models suggest coverage could grow to 70 percent or better along and west of I-95 by evening, and I've placed the highest PoPs there. Today's highs should range from the mid 80s along the beaches to 88-90 inland.

Saturday looks fairly similar to today except the low and mid level flow should veer a little more westerly as the mid level trough begins to lift out to the northeast. There should be a little less convection compared to today as the atmosphere dries out in the mid levels and 700 mb temperatures rise by a degree or two. I've nudged forecast highs up just a bit, with around 90 inland and mid-upper 80s near the coast.

SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY NIGHT/. As upper level trough moves further to the northeast, a mostly zonal pattern develops Saturday night through Wednesday. At the surface, a lingering boundary inland will make its towards the coast early Sunday. Combined with sea breeze and possibly weak upper impulses, scattered afternoon thunderstorms expected. Highs Sunday in the low 90s, with lows Saturday and Sunday night in the low to mid 70s.

LONG TERM /MONDAY THROUGH THURSDAY/. Typical summertime weather continues for the long term, with hot and humid conditions and scattered afternoon thunderstorm chances each day. Zonal pattern aloft persists early in the week, with an inland trough at the surface Monday through Thursday. Although some dry air aloft is forecasted to briefly move across Monday, enough moisture exists to keep thunderstorm chances in the forecast for the afternoon. An upper ridge looks to develop over the southeast mid- week, with additional moisture riding over the top of it into our area. Highs each day near normal around 90, with above normal lows in the low to mid 70s.

AVIATION /18Z FRIDAY THROUGH TUESDAY/. Generally VFR expected for the next few hours. Late afternoon thunderstorms will pop up and tend to be most likely to affect KFLO and KLBT. Storm coverage should be good enough near the latter that we've introduced a TEMPO line. Some MVFR fog is possible tonight inland, though the potential will also hinge upon where the most rain falls.

Extended Outlook . Weak troughing inland will result in isolated thunderstorms over the weekend into early next week, although coverage will be isolated to scattered. Any storms could bring brief IFR conditions in low visibility.

MARINE. Through Saturday..

Light south to southwest winds will continue today through tomorrow between a weakening trough of low pressure inland and high pressure well offshore. Outside of thunderstorms wind speeds should average less than 10 knots. The dominant contributor to the wave spectrum today should be a southeast swell every 8 seconds with smaller contributions from a local 3 to 4 second wind chop. Combined seas should average 2 feet. Thunderstorms already developing early this morning should clear out of the coastal waters by 9-10 AM. New thunderstorms developing inland this afternoon will tend to stay inland, but a few could be close enough to the coast for nearshore marine impacts between 1-4 PM. Scattered thunderstorms may redevelop late tonight into Saturday morning.

Saturday Night through Tuesday..

With high pressure offshore and a weak pressure gradient over the area, benign marine conditions expected for Saturday night through Tuesday, with the exception of scattered thunderstorms possible each day. South-southwest winds throughout forecast period between 5-10 kts. Seas around 2 ft Saturday night through Sunday night relax to 1- 2 ft for Monday and Tuesday, combination of weak south wind wave and 9 sec SE swell.

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

SYNOPSIS . ILM NEAR TERM . TRA SHORT TERM . VAO LONG TERM . VAO AVIATION . mbB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41024 - Sunset Nearshore (SUN 2) 5 mi25 min SW 7.8 G 12 81°F 84°F1019 hPa
41119 5 mi76 min 83°F2 ft
MROS1 - 8661070 - Springmaid Pier, SC 23 mi45 min 80°F
41108 31 mi63 min 83°F2 ft
WLON7 41 mi45 min 85°F 84°F1018.9 hPa
JMPN7 - 8658163 - Johnny Mercer Pier, Wrightsville Beach, NC 48 mi45 min S 8 G 8.9 82°F 82°F1018.4 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 48 mi48 min SSE 6 82°F 1019 hPa76°F
41038 - ILM2 - 5 miles SE of Wrightsville Beach, NC 49 mi25 min SW 7.8 G 9.7 70°F 82°F1018.7 hPa
41110 - Masonboro Inlet, NC 49 mi26 min 83°F2 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
North Myrtle Beach Grand Strand Airport, SC9 mi40 minSSE 1010.00 miFair83°F75°F79%1019.1 hPa
Myrtle Beach International Airport, SC22 mi37 minS 710.00 miA Few Clouds83°F75°F79%1019.1 hPa

Link to 5 minute data for KCRE

Wind History from CRE (wind in knots)
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Last 24hrCalmS6SE7S55S9S8S6S6S5S4S4S4CalmCalmW4CalmNE5SW5S3SW9S6SW8SE10
1 day agoS8S5SE6SE6SE6SE5SE4SE3SE4S6S5S6S5S5S4W9CalmNE4CalmSE3S6S8SW94
G15
2 days agoS12S12SW12S14SW10S8S9S10S9S11S8SW9S7S7S5S7S5E10
G19
N9NW3N4E4S6SE5

Tide / Current Tables for Dunn Sound, Little River Inlet, South Carolina
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Dunn Sound
Click for Map
Fri -- 05:29 AM EDT     0.31 feet Low Tide
Fri -- 06:30 AM EDT     Sunrise
Fri -- 10:05 AM EDT     Moonset
Fri -- 11:08 AM EDT     4.49 feet High Tide
Fri -- 05:37 PM EDT     0.57 feet Low Tide
Fri -- 08:08 PM EDT     Sunset
Fri -- 10:44 PM EDT     Moonrise
Fri -- 11:27 PM EDT     4.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.7431.90.90.40.41.22.33.44.14.54.33.82.921.20.70.61.32.33.44.24.7

Tide / Current Tables for Myrtle Beach Airport, ICWW, South Carolina
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Myrtle Beach Airport
Click for Map
Fri -- 12:12 AM EDT     3.18 feet High Tide
Fri -- 06:31 AM EDT     Sunrise
Fri -- 06:58 AM EDT     0.31 feet Low Tide
Fri -- 10:06 AM EDT     Moonset
Fri -- 12:28 PM EDT     2.85 feet High Tide
Fri -- 07:06 PM EDT     0.57 feet Low Tide
Fri -- 08:09 PM EDT     Sunset
Fri -- 10:45 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.23.12.72.21.50.90.50.30.61.222.52.82.82.62.11.61.10.70.60.81.322.6

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 (14,3,4,5)
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Ground Weather Radar Station Wilmington, NC
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Disclaimer:
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.