Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Edisto Beach, SC

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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 6:46AMSunset 7:58PM Thursday August 22, 2019 1:32 PM EDT (17:32 UTC) Moonrise 11:11PMMoonset 12:02PM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 103 Pm Edt Thu Aug 22 2019
This afternoon..S winds 5 to 10 kt. Seas 1 foot.
Tonight..S winds 10 kt. Seas 2 ft.
Fri..S winds 10 kt. Seas 2 ft. A slight chance of showers and tstms in the morning.
Fri night..S winds 10 kt. Seas 2 ft. A 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..SE winds 5 to 10 kt. Seas 2 ft. A chance of showers with a slight chance of tstms.
Sun..E winds 5 to 10 kt. Seas 2 ft. Showers likely with a slight chance of tstms.
Sun night..E winds 10 kt. Seas 2 ft. Showers likely with a slight chance of tstms.
Mon..E winds 10 kt. Seas 2 ft. Showers likely with a slight chance of tstms.
Mon night..SE winds 5 to 10 kt. Seas 2 ft. A chance of showers with a slight chance of tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 103 Pm Edt Thu Aug 22 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 to the south. Low pressure may develop offshore along the front but should move quickly to the northeast away from the area by mid week.


7 Day Forecast for Marine Location Near Edisto Beach, SC
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location: 32.48, -80.32     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 221458
afdchs
area forecast discussion
national weather service charleston sc
1058 am edt Thu aug 22 2019

Synopsis
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 to the south. Low
pressure may develop offshore along the front but should move
quickly to the northeast away from the area by mid week.

Near term through tonight
Morning update: no need to make any drastic changes with this
update. Just the typical plugging of the observations into the
grids and blending into the afternoon forecast. The rest of the
thinking below remains the same.

Today: deep layered ridging will continue to extend along and
just north of 30w into the coastal southeast states. The
synoptic pattern is relatively unchanged from yesterday and
typical late august weather is on tap with hot and humid
conditions with isolated to scattered diurnal convection
developing across the region once again. We suspect showers and
tstms will develop in the axis of the highest 850 mb theta-e air
which should extend along the i-95 corridor in sc down
southward into inland SE ga during the mid late afternoon hours.

Sufficiently deep moisture and typical late summer diurnal
instability suggest slow moving pulse tstms with locally heavy
downpours. Similar to Wednesday, a few stronger storms are
possible but risk of severe weather remains low. Temps will
reach the mid 90s many areas this afternoon with heat indices in
the 104-106 degree range.

Tonight: any lingering evening convection will wane with the
loss of surface heating, resulting in thinning clouds overnight
with lows in the mid 70s most areas.

Short term Friday through Sunday
Moderate confidence this period. Surface troughing inland and high
pressure offshore will persist into Saturday before a cold front
sags south toward the area, likely pushing through southeast sc ga
Saturday night. Expect fairly typical summertime weather through
Saturday with mainly afternoon evening scattered showers and
thunderstorms before cooler and wetter conditions kick in for the
later half of the weekend as low pressure possibly develops offshore
along the front. At this point any low looks to remain well enough
offshore and weak and thus little to no impacts are expected across
our forecast area. Otherwise, the severe storm risk will remain low
(mainly just through Saturday) with a heavy rain threat mainly from
late Saturday through Sunday. Temperatures should stay above normal
through Saturday with heat indices peaking in the low to mid 100s
each afternoon for most areas away from the beaches before temps
likely fall below normal Sunday as rain cloud coverage increase.

Long term Sunday night through Wednesday
Low confidence this period. There is a bit better agreement amongst
the latest gfs ECMWF that any weak low pressure system should remain
well offshore as it tracks to the northeast and away from the
forecast area Monday. However, the lingering front and upper level
energy will remain along with deep moisture so it looks to remain
more unsettled than normal through at least Wednesday. At this time
it appears as though heavy rain is the main concern with localized
flooding possible, especially near the coast around the times of
high tide.

Aviation 15z Thursday through Monday
Vfr will prevail at both kchs and ksav. Tstms are possible once
again along the coastal corridor this afternoon.

Extended aviation outlook: periodic restrictions at kchs ksav
each day through Saturday, mainly from afternoon evening showers
and thunderstorms. More significant restrictions are likely
Saturday night through early next week due to increased
moisture rain coverage.

Marine
Through tonight: little change to our persistence forecast with
south to southwest flow below 15 kt and seas 1-3 ft.

Friday through Monday: atlantic high pressure and an inland
trough will result in mainly south southwest winds around 15
knots or less until a cold front likely moves through the waters
Saturday night. Weak low pressure is likely to develop at some
point offshore to the east of the local waters and shift to the
northeast late in the period. Overall the strongest winds will
likely occur near the sc coast, including charleston harbor,
where the best pressure gradient should set up. Seas will likely
stay 4 feet or less, although there is more uncertainty early
next week as much depends on the strength of the winds. At this
point we are not expecting small craft advisory conditions for
any of our waters.

Tides coastal flooding
Astronomical tides will be running close to minor coastal flood
advisory levels next week and onshore winds could lead to even
higher tides, mainly during the evening high tide cycles starting
Sunday. In addition, there is the potential for some heavy rain
around the times of high tide which could exacerbate any flooding
issues.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Rjb
long term... Rjb
aviation...

marine...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 9 mi107 min W 1.9 89°F 1019 hPa77°F
41033 15 mi24 min SSW 9.7 G 12 84°F 85°F1018.7 hPa
FBIS1 - Folly Island, SC 27 mi32 min SSW 11 G 12 86°F 1019.3 hPa (-0.8)77°F
CHTS1 30 mi44 min SW 4.1 G 8.9 91°F 86°F1018.9 hPa
41029 - Capers Nearshore (CAP 2) 43 mi24 min SW 12 G 16 84°F 85°F1018.9 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 44 mi44 min Calm G 1.9

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC17 mi37 minS 45.00 miPartly Cloudy with Haze88°F75°F66%1018.6 hPa
Beaufort, Marine Corps Air Station, SC21 mi3.6 hrsWSW 910.00 miPartly Cloudy87°F77°F72%1019.5 hPa
Charleston Executive Airport, SC23 mi37 minS 410.00 miPartly Cloudy90°F75°F63%1018.6 hPa

Link to 5 minute data for KARW

Wind History from ARW (wind in knots)
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1 day agoS8S6S9S8S6SE4S6SE3S3S3S5S8SW4SW3CalmW3CalmCalmW5W8SW7SW9SW4SW5
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Tide / Current Tables for Edisto Marina, Big Bay Creek entrance, South Carolina
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Edisto Marina
Click for Map
Thu -- 12:46 AM EDT     5.64 feet High Tide
Thu -- 06:49 AM EDT     Sunrise
Thu -- 06:56 AM EDT     0.77 feet Low Tide
Thu -- 01:02 PM EDT     Moonset
Thu -- 01:14 PM EDT     6.07 feet High Tide
Thu -- 07:22 PM EDT     1.43 feet Low Tide
Thu -- 07:58 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.55.65.24.43.221.10.81.22.33.64.85.76.15.95.24.12.921.51.62.23.24.2

Tide / Current Tables for Ocella Creek, 2 mi. above entrance, South Carolina
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Ocella Creek
Click for Map
Thu -- 01:03 AM EDT     5.36 feet High Tide
Thu -- 06:49 AM EDT     Sunrise
Thu -- 07:09 AM EDT     0.84 feet Low Tide
Thu -- 01:01 PM EDT     Moonset
Thu -- 01:41 PM EDT     5.77 feet High Tide
Thu -- 07:39 PM EDT     1.44 feet Low Tide
Thu -- 07:57 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.25.45.14.43.32.11.20.811.834.25.25.75.75.34.33.22.21.61.51.92.73.7

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 Charleston, SC (13,3,4,5)
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Ground Weather Radar Station Charleston, SC
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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.