Friday, April26, 2019 L-36.com


Marine Weather and Tides
Edisto Beach, SC

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:36AMSunset 7:58PM Friday April 26, 2019 1:39 AM EDT (05:39 UTC) Moonrise 1:05AMMoonset 11:33AM Illumination 58% 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 942 Pm Edt Thu Apr 25 2019
Tonight..S winds 15 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. A slight chance of showers after midnight.
Fri..SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. A chance of showers with a slight chance of tstms.
Fri night..W winds 15 to 20 kt, becoming nw 10 to 15 kt after midnight. Seas 3 to 4 ft. A slight chance of showers and tstms in the evening.
Sat..N winds 10 to 15 kt, becoming se 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Sat night..S winds 10 kt. Seas 2 ft.
Sun..SW winds 10 kt. Seas 2 ft.
Sun night..S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 ft.
Mon..E winds 5 to 10 kt. Seas 2 ft.
Mon night..SE winds 5 to 10 kt. Seas 2 ft.
Tue..S winds 5 to 10 kt. Seas 2 ft.
Tue night..S winds 5 to 10 kt. Seas 2 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 942 Pm Edt Thu Apr 25 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail through the evening. Low pressure and a cold front will bring unsettled weather on Friday. High pressure will then return for the weekend and prevail through the first half of next 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 260204
afdchs
area forecast discussion
national weather service charleston sc
1004 pm edt Thu apr 25 2019

Synopsis
High pressure will prevail through the evening. Low pressure
and a cold front will bring unsettled weather on Friday. High
pressure will then return for the weekend and prevail through
the first half of next week.

Near term until 6 am Friday morning
Rest of tonight: a broken line of showers ahead of the surface
cold front has now moved into northern and western ga, which is
on track with the latest model forecasts, including the hrrr.

Models continue to indicate that the bulk of the deep layer
moisture will split to the north and south of the region
starting well after midnight. Therefore, have continued only a
slow ramp up of pops after midnight, reaching low end chance
levels by sunrise. Have kept mention of only slight chance for
thunder given the lack of instability that time of day.

Temperatures have dropped down to the lower 70s most locations,
but only expecting a few more degrees of a drop overnight as
mid and high clouds continue to thicken and winds remain
southerly at 5 to 10 mph.

Short term 6 am Friday morning through Sunday
Friday: an elongated trough from the western great lakes to florida
at the start of the period will deepen and shift east. A weak short
wave embedded in the larger trough will be just northeast of the
area at start the day and this should result in a tendency toward
some sinking motion while drier air moves in at the mid and upper
levels. This combined with a strong signal from the models that
strong significant convection will move east across the northeast
gulf of mexico and into florida early on Friday while more
significant convection and lift moves from northern georgia into
western north carolina. Also, the timing of front is not optimal to
develop significant instability out ahead of it and the model show
just modest instability developing mainly along the coast. Bottom
line, it appears that this split in the precipitation will result in
a lower threat for precipitation and for lighter precipitation amounts
for our cwa. Therefore have lowered rain chances to no more than 50
percent for Friday. With the dry mid levels, cannot rule out a
strong thunderstorm along the front with wind being the primary
threat, but at the present time am not sure how much precipitation
there will be with the front. The precipitation should end from
southwest to northeast rather quickly Friday afternoon. Friday will
be quite windy both ahead of the front and behind it with some wind
gusts up 30 to 35 mph possible. Wind gusts on lake moultrie are
close to lake wind advisory levels, but will defer to the overnight
shift to make the final call. Highs away from the coast will be in
the lower 80s, with generally 50s in the wake of the front Friday
night.

Saturday and Sunday: modest mid level west-northwest to west flow
aloft will prevail in the wake of the large scale trough moving away
from the area. Surface high pressure will build over the area
Saturday, then move offshore Saturday night and into Sunday. Dry air
and subsidence will result dry conditions and little if any cloud
cover. High temperatures will be near normal Saturday and a several
degrees above normal on Sunday.

Long term Sunday night through Thursday
Models are in good agreement showing high pressure over or
nearby our area during the long term, bringing dry conditions
and temperatures at or slightly above normal.

Aviation 02z Friday through Tuesday
Overnight: expectVFR conditions to prevail at both kchs and
ksav through most of the night. The gusty winds have subsided at
both sites this evening, but are expected to remain around 10
knots all night. A cold front will approach the area from the
west late tonight, bringing a slight chance for showers and
perhaps even a thunderstorm just before daybreak Friday.

Shower thunderstorm chances will increase through Friday
morning as the cold front approaches. Have maintained vcsh at
both terminals near daybreak Friday,persisting into early
Friday afternoon. Even with scattered showers and isolated
thunderstorms in the area, have keptVFR cigs. Best chances for
thunder continue to be from after sunrise to early afternoon.

Expect any precip. Chances to quickly end between 18 and 20z.

Extended aviation outlook: gusty winds are possible into Friday
evening.VFR conditions are expected Friday night through Monday.

Marine
Rest of tonight: southerly winds will persist between atlantic
high pressure centered well offshore and low pressure advancing
east over the deep south. Winds have dropped a little near the
coast this evening, but still around 15 kts with some higher
gusts, especially charleston harbor and amz350. Withe the
pressure gradient expected to gradually tighten after midnight
as the cold front approaches from the west late, southerly
winds should remain elevated in the 15-20 kt range. Seas will build
to 3-4 ft across nearshore waters and 4-5 ft across offshore
georgia waters. Still expect conditions will remain below small
craft advisory levels through daybreak. A few showers or an
isolate thunderstorms could produce locally stronger wind gusts
toward sunrise.

Friday: increasing surface pressure gradient ahead of an approaching
cold front and then a tight pressure gradient and good mixing behind
the front will result in elevated winds Friday and Friday evening.

Looks like frequent wind gusts of at least 25 knots will occur in
amz374 and amz330 during the afternoon and evening hours as well as
seas up to 6 feet. As a result, have issued a small craft advisory
for these marine areas from 16z through 04z. The winds are close for
charleston harbor and amz352 to be included, but have left them out
for now. Winds and seas will gradually subside Friday night.

Saturday through early next week: high pressure over or near
the area will dominate the forecast, bringing tranquil marine
conditions.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory from noon Friday to midnight edt Friday
night for amz350-374.

Near term... Dpb rfm
short term... Mte
long term... Ms
aviation... Dpb mte
marine... Dpb mte


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 9 mi114 min S 1.9 71°F 1013 hPa67°F
41033 15 mi151 min S 9.7 G 14 71°F 70°F1013.4 hPa
FBIS1 - Folly Island, SC 27 mi39 min S 7 G 7 70°F 1013.1 hPa (-0.7)68°F
CHTS1 30 mi45 min S 8 G 11 72°F 71°F1012.8 hPa
41029 - Capers Nearshore (CAP 2) 43 mi91 min SSW 7.8 G 12 70°F 68°F1013 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 44 mi45 min SSW 8 G 13 72°F 69°F1013.2 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC17 mi44 minS 710.00 miPartly Cloudy70°F66°F88%1012.5 hPa
Beaufort, Marine Corps Air Station, SC21 mi43 minS 810.00 miMostly Cloudy73°F68°F84%1012.5 hPa
Charleston Executive Airport, SC23 mi44 minS 510.00 miFair70°F68°F94%1012.5 hPa

Wind History from ARW (wind in knots)
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Tide / Current Tables for Edisto Marina, Big Bay Creek entrance, South Carolina
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Edisto Marina
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Fri -- 01:57 AM EDT     5.76 feet High Tide
Fri -- 02:05 AM EDT     Moonrise
Fri -- 06:39 AM EDT     Sunrise
Fri -- 08:15 AM EDT     1.12 feet Low Tide
Fri -- 12:32 PM EDT     Moonset
Fri -- 02:20 PM EDT     5.18 feet High Tide
Fri -- 06:19 PM EDT     Last Quarter
Fri -- 07:58 PM EDT     Sunset
Fri -- 08:17 PM EDT     1.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.85.55.85.44.73.62.51.61.11.31.92.83.84.75.154.43.52.61.81.41.52.12.9

Tide / Current Tables for Ocella Creek, 2 mi. above entrance, South Carolina
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Ocella Creek
Click for Map
Fri -- 02:04 AM EDT     Moonrise
Fri -- 02:37 AM EDT     5.57 feet High Tide
Fri -- 06:39 AM EDT     Sunrise
Fri -- 08:27 AM EDT     0.96 feet Low Tide
Fri -- 12:32 PM EDT     Moonset
Fri -- 02:58 PM EDT     4.71 feet High Tide
Fri -- 06:19 PM EDT     Last Quarter
Fri -- 07:58 PM EDT     Sunset
Fri -- 08:35 PM EDT     1.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.355.55.5542.81.711.11.62.53.344.54.74.43.72.71.91.31.21.72.5

Weather Map and Satellite Images
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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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Wind Forecast for Charleston, SC (1,6,7,8)
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Ground Weather Radar Station Charleston, SC
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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 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.