Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
McClellanville, SC

Version 3.4
NOTICE
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 6:45AMSunset 7:59PM Wednesday August 21, 2019 7:10 AM EDT (11:10 UTC) Moonrise 10:31PMMoonset 11:02AM Illumination 67% Phase: Waning Gibbous; Moon at 21 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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AMZ350 Waters From South Santee River To Edisto Beach Sc Out 20 Nm- 646 Am Edt Wed Aug 21 2019
Today..SW winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Seas 2 ft.
Tonight..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms.
Thu..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms after midnight.
Fri..SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms.
Fri night..SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms.
Sat..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun..E winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
Sun night..E winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 646 Am Edt Wed Aug 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail through late week. A cold front will then push into the area this weekend before stalling over or just south of the area through early next week.


7 Day Forecast for Marine Location Near McClellanville, SC
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location: 33, -79.36     debug


Area Discussion for - Wilmington, NC
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Fxus62 kilm 210806
afdilm
area forecast discussion
national weather service wilmington nc
406 am edt Wed aug 21 2019

Synopsis
Bermuda high pressure, the piedmont trough and the daily
sea breeze will combine and aid the daily scattered showers
and thunderstorms each afternoon and evening thru fri. A front
will drop south into the area late Friday then stall thru the
upcoming weekend into early next week.

Near term through Thursday
The ilm CWA will continue to remain in a weak area aloft,
basically sandwiched between the 2 upper highs, bermuda to
the east and ridging across the western u.S. An upper trof will
lie between the 2 highs with it's trof axis remaining west of
the fa thru this period. The trof not as amplified will still
result in continued moisture from the gulf of mexico, just not
entirely thru the atm column, as pws remain between 1.75 and 2
inches. At the sfc, each day will feature the piedmont trof
across the central carolinas and the formation and inland
progressing sea breeze. The 2 boundaries will be the source of
lift for convection to ignite. During thu, a weak S W trof or
vort aloft could further aid convection development with pops
slightly hier Thu than today. Temperatures will run slightly
above normal for MAX temps each day and likely a good 5 degrees
higher than climo for tonights lows.

Short term Thursday night through Friday night ...

as is typical of summer, expected isolated to scattered
diurnally driven thunderstorms thought there could be a little
greater cover Friday afternoon and evening as a front approaches
from the north. Lows each night will be in the low to mid 70s
with highs Friday in the upper 80s to lower 90s.

Long term Saturday through Tuesday
Model guidance suggests that the front will pass of the coast
Saturday into Saturday night and linger near the area into early
next week. The stalled front and upper level support will allow
for multiple rounds of showers and thunderstorms Sat and sun
with showers and storms becoming more scattered in nature early
next week. Temperatures should be slightly below normal through
the period.

Aviation 06z Wednesday through Sunday
Thru the pre-dawn Wed hours, the convection approaching from
the west could reach the i-95 corridor before dissipating
around daybreak. A few showers may develop over the adjacent
atl waters early this morning and could briefly push across the
coastal terminals. Only brief periods of MVFR could occur with
this pcpn. Otherwise, looking at more or less a repeat of tue
with the chance of convection slightly hier than what occurred
tue. The daily sea breeze will develop by noon and slowly
progress inland as it comes against decent westerly winds in the
lower levels. Looking at wsw sfc winds around 5 kt at daybreak
that will increase to 5 to 10 kt later this morning. Winds will
veer to ssw 10 to 15 kt across the coastal terminals in the wake
of the inland progressing sea breeze. Will indicate vicinity
convection at the coastal terminals this aftn and prob30 for the
inland terminals mid aftn thru early evening.

Extended... MainlyVFR thru Fri with brief MVFR ifr periods each
day due to aftn evening convection and fog and or stratus
around daybreak. A cold front will drop south and stall across
the region late Fri thru sun. This will lead to an increase in
tsra coverage with MVFR ifr conditions possible at any time of
the day or night.

Marine
Today thru thu:
sfc ridging extending from the center of bermuda high pressure
well offshore, will drop slight southward this period, extending
onshore near the ga-fl state border. A sfc trof will persist
across the central carolinas thruout this period. Between the 2
features, a slow tightening of the sfc pg will occur thru the
period. Wind directions will remain sw, except ssw nearshore due
to the daily sea breeze. Speeds 10-15 kt except increasing to 15
to occasionally 20 kt across the ilm nc waters. Significant seas
thru the period will run around 3 ft... Except 3 to as much as 5
ft across the ilm nc waters tonight thru thu. Convection will
remain widely scattered at best, and primarily occur early this
morning and the pre-dawn Thu hours.

Thu night thru sun:
bermuda high will linger off the coast into sat, maintaining 10
to 15 kt southwest flow. Speeds will be highest in the
afternoon and evening. A slow moving cold front will drops into
the area Sat and move off the coast Sat night, resulting in
winds becoming more E to NE around 10 kt by Sunday morning. Seas
3 to 4 ft Thu and Fri drop to 2 to 3 ft over the weekend.

Ilm watches warnings advisories
Sc... None.

Nc... None.

Marine... None.

Synopsis... Dch
near term... Dch
short term... Ran
long term... Iii ran
aviation... Dch
marine... Dch ran


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41029 - Capers Nearshore (CAP 2) 20 mi63 min W 9.7 G 14 83°F 84°F1019.1 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi86 min WSW 1 78°F 1018 hPa77°F
CHTS1 34 mi59 min SW 2.9 G 5.1 81°F 85°F1019.2 hPa
FBIS1 - Folly Island, SC 35 mi71 min W 2.9 G 2.9 80°F 1019.4 hPa (+0.0)77°F
41004 - EDISTO - 41 NM Southeast of Charleston, SC 37 mi31 min WSW 7.8 G 9.7 83°F 83°F1019.2 hPa78°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC22 mi16 minN 07.00 miFair73°F71°F94%1019.6 hPa
Mount Pleasant Regional-Faison Field, SC24 mi16 minN 06.00 miFog/Mist75°F75°F100%1019.3 hPa

Link to 5 minute data for KGGE

Wind History from GGE (wind in knots)
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Last 24hrCalmCalmCalmSW4SW3SW3SW9CalmCalmS7S9--S8S6S5----------------Calm
1 day agoCalmCalmSW4SW4SW3W3SW6S5S9S11
G15
S8S9SW9S7CalmSW3SW6Calm--------Calm--
2 days agoCalmSW3CalmW3SW5SW3SW7SW6S6SW7SW5SW6SW4S3S5S4CalmCalm--CalmCalmSW5CalmCalm

Tide / Current Tables for Cape Romain, South Carolina
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Cape Romain
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Wed -- 06:00 AM EDT     0.63 feet Low Tide
Wed -- 06:44 AM EDT     Sunrise
Wed -- 11:58 AM EDT     4.71 feet High Tide
Wed -- 12:02 PM EDT     Moonset
Wed -- 06:21 PM EDT     1.06 feet Low Tide
Wed -- 07:56 PM EDT     Sunset
Wed -- 11:31 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.54.23.42.41.50.90.60.91.82.93.94.54.74.53.932.11.41.11.21.72.73.64.2

Tide / Current Tables for Five Fathom Creek entrance, South Carolina
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Five Fathom Creek entrance
Click for Map
Wed -- 06:10 AM EDT     0.67 feet Low Tide
Wed -- 06:45 AM EDT     Sunrise
Wed -- 12:02 PM EDT     Moonset
Wed -- 12:14 PM EDT     4.92 feet High Tide
Wed -- 06:31 PM EDT     1.13 feet Low Tide
Wed -- 07:56 PM EDT     Sunset
Wed -- 11:31 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.84.53.82.81.810.70.91.72.83.94.64.94.84.33.42.41.61.21.21.72.63.54.3

Weather Map and Satellite Images
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wmap_A
GOES 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 Wilmington, NC (7,2,3,4)
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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 numerious 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.