Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Laurel Bay, SC

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:16AMSunset 8:23PM Saturday May 27, 2017 11:51 AM EDT (15:51 UTC) Moonrise 7:14AMMoonset 9:31PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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- 1018 Am Edt Sat May 27 2017
Rest of today..SW winds 10 to 15 kt...becoming S 15 kt. Seas 2 to 3 ft.
Tonight..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Sun..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Sun night..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Mon..SW winds 10 to 15 kt. Seas 2 ft.
Mon night..SW winds 10 to 15 kt. Seas 2 ft.
Tue..W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and Thunderstorms.
Tue night..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and Thunderstorms.
Wed..SW winds 5 kt. Seas 2 ft. A slight chance of showers and Thunderstorms.
Wed night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and Thunderstorms. Mariners are reminded that winds and seas can be higher in and near tstms.
AMZ300 1018 Am Edt Sat May 27 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will linger over the region through this weekend. A weak cold front is expected to stall across the area early next week.

7 Day Forecast for Marine Location Near Laurel Bay, SC
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location: 32.49, -80.82     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 271434
afdchs
area forecast discussion
national weather service charleston sc
1034 am edt Sat may 27 2017

Synopsis
High pressure will linger over the region through this weekend.

A weak cold front is expected to stall across the area early
next week.

Near term through tonight
Today: no significant changes were made to the previous
forecast. The mid upper level flow pattern will feature nearly
zonal flow with a slight anticyclonic curvature. A large area of
nva will encompass the area and model soundings show plentiful
dry air coincident with a very strong capping inversion. At the
surface, high pressure will be the primary feature as it sits to
the south of the forecast area. Winds for much of the day will
be west-southwest, and this westerly flow combined with rising
heights aloft will result in a warm afternoon. Forecast highs
are in the low 90s everywhere except the beaches which should
see a late afternoon sea breeze. In fact, the charleston county
beaches will likely see breezy conditions and winds routinely
gusting to around 25 mph.

Tonight: the upper ridge will temporarily flatten in response
to some mid level energy that crosses the southern appalachians
in the evening. The bulk of any forcing associated with this
shortwave will remain north of the area, but various models do
depict some nocturnal convection along the north carolina south
carolina state line. Current thinking is that this will still
stay north of the santee river, so a dry forecast is in place,
but it is still something to keep an eye on. Overall still a
quiet night with mild lows around 70.

Short term Sunday through Tuesday
The upper ridge will hold strong for one more day, keeping a
mainly dry forecast for Sunday. The exception may be an isolated
shower or TSTM drifting into far northern zones late in the
afternoon as a weak shortwave brushes the area. Highs will top
out in the mid 90s. Given dewpoints around 70, heat indices may
top 100 for a few hours.

The upper ridge will amplify on Monday though the axis will
gradually shift farther into the western atlantic. Model
soundings show a moderate mid-level cap through early afternoon
after which it breaks. The best shortwave energy will remain
west of the area during the day, though a weak cold front will
push into central ga sc late. A toasty day with highs in the mid
90s and dewpoints in the lower 70s will yield fairly impressive
cape values during the afternoon. There will also be a fair
amount of dry air aloft. If the mid-level cap does indeed break
at some point on Monday, convection should initiate pretty
quickly. There is also the possibility that some upstream
activity will drift into the area. Convective indices would
support some severe thunderstorms, mainly across inland areas
late in the afternoon. Given the uncertainty regarding the
breakdown of the ridge we show pops no higher than 30%.

The cold front will stall near or over the area on Tuesday and
upper shortwave energy will traverse our inland zones. Better
coverage of mainly afternoon evening showers and thunderstorms
is expected. Greater cloud cover will cut down on surface-based
destabilization though there will still be enough heating to
push capes above 1,000 j kg. Dry air aloft could create a
damaging wind potential with some of the storms.

Long term Tuesday night through Friday
A weak front will meander over the area mid to late week while
weak upper troughing will keep a steady stream of shortwaves
moving through. Decent coverage of showers and tstms expected
each day, mainly during the afternoon.

Aviation 14z Saturday through Wednesday
Vfr.

Extended aviation outlook: mainlyVFR conditions. Brief flight
restrictions possible in afternoon evening showers tstms
starting Monday.

Marine
Today and tonight: high pressure centered south of the local
waters will drive persistent southwesterly flow through the
period. A locally enhanced pressure gradient as well as the
influence of a late day sea breeze will result in elevated winds
mainly along the charleston county coast including the
charleston harbor. Have capped the forecast at 15-20 knots for
now, but some gusts up to 25 knots will be possible. No small
craft advisory for now, but it could end up being marginally
supportive of one at times. Then overnight, southwest flow will
continue around 15 knots. Seas will primarily be in the 1-3 ft
range through the period, with 4 feet possible, mainly beyond 15
nm off the charleston county coast.

Atlantic high pressure will generally prevail though a weaker
gradient will ensue mid-week as a front stalls over the waters.

Southwest flow will prevail with modest afternoon sea breezes
along the coast.

Tides coastal flooding
Tides will be running high through Sunday due to the new moon
and perigee. Fortunately the wind directions are not very
conducive for surge, but we could see very marginal coastal
flooding along the sc coast during the evening high tides today
and Sunday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Rjb
short term... Jrl
long term... Jrl
aviation... Bsh jrl
marine... Bsh jrl
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 20 mi66 min SW 1.9 81°F 1017 hPa64°F
41033 26 mi43 min WSW 9.7 G 12 77°F 77°F1017.2 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 32 mi51 min WNW 9.9 G 12 80°F 1017.4 hPa (-0.3)
FBIS1 - Folly Island, SC 51 mi51 min SW 14 G 16 78°F 1017.2 hPa (+0.0)69°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort, Marine Corps Air Station, SC5 mi55 minW 1010.00 miFair84°F64°F53%1016.9 hPa
Beaufort County Airport, SC11 mi2.6 hrsWSW 67.00 miFair75°F62°F65%1017.3 hPa
Hilton Head Island, Hilton Head Airport, SC20 mi61 minWSW 810.00 miClear82°F62°F51%1017.3 hPa

Wind History from NBC (wind in knots)
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Last 24hrW6NW8W10W10
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W9W6W4SW3SW3SW4SW4SW4CalmSW4CalmSW4SW4SW3SW6SW10SW7W10
1 day agoW17
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W12W6SW4SW4SW4SW5SW5W6W6W7W7W7W3W6NW7NW7W8
2 days agoS8
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Tide / Current Tables for RR. Bridge, Hall Island, South Carolina
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RR. Bridge
Click for Map
Sat -- 05:35 AM EDT     -1.07 feet Low Tide
Sat -- 06:18 AM EDT     Sunrise
Sat -- 08:14 AM EDT     Moonrise
Sat -- 11:44 AM EDT     8.86 feet High Tide
Sat -- 05:45 PM EDT     -1.23 feet Low Tide
Sat -- 08:23 PM EDT     Sunset
Sat -- 10:30 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.38.76.43.61-0.8-0.90.42.75.27.38.68.87.96.23.81.3-0.7-1.202.55.489.8

Tide / Current Tables for North Dawson Landing, Coosawhatchie River, South Carolina
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North Dawson Landing
Click for Map
Sat -- 12:06 AM EDT     10.28 feet High Tide
Sat -- 06:18 AM EDT     Sunrise
Sat -- 06:21 AM EDT     -1.16 feet Low Tide
Sat -- 08:14 AM EDT     Moonrise
Sat -- 12:39 PM EDT     8.48 feet High Tide
Sat -- 06:31 PM EDT     -1.33 feet Low Tide
Sat -- 08:23 PM EDT     Sunset
Sat -- 10:31 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.39.78.15.72.90.4-1.1-0.90.62.95.37.28.38.47.45.63.10.6-1.1-1.20.32.85.57.9

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (11,2,3,4)
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Ground Weather Radar Station Charleston, SC
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weather_mapweather_map weather_map

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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.