Thursday, July20, 2017 L-36.com


Marine Weather and Tides
Laurel Bay, SC

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:29AMSunset 8:29PM Thursday July 20, 2017 6:42 PM EDT (22:42 UTC) Moonrise 2:40AMMoonset 4:50PM Illumination 8% Phase: Waning Crescent; Moon at 27 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- 606 Pm Edt Thu Jul 20 2017
Tonight..S winds 10 to 15 kt, becoming sw. Seas 2 ft.
Fri..S winds 5 to 10 kt. Seas 2 ft.
Fri night..SW winds 5 to 10 kt. Seas 2 ft.
Sat..SW winds 5 to 10 kt, becoming S 15 kt in the afternoon. Seas 2 ft.
Sat night..SW winds 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sun..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sun night..SW winds 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms.
Mon..SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms.
Mon night..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Tue..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Tue night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 606 Pm Edt Thu Jul 20 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will extend west into the southeast coast through this weekend as a surface trough remains inland. Unsettled weather will ensue toward the early to middle part of next week as a cold front approaches the area.

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 202201
afdchs
area forecast discussion
national weather service charleston sc
601 pm edt Thu jul 20 2017

Synopsis
Atlantic high pressure will extend west into the southeast
coast through this weekend as a surface trough remains inland.

Unsettled weather will ensue toward the early to middle part of
next week as a cold front approaches the area.

Near term until 6 am Friday morning
A large mesoscale boundary collision is poised to occur across
the southern midlands and csra, which could initiate additional
convection. Increased pops to 40% from jenkins east to northern
dorchester to account for this. Dcape remains elevated so still
can not rule out an isolated severe TSTM or two next 1-2 hours.

Short term 6 am Friday morning through Sunday
Familiar summer pattern should prevail through the weekend with
upper level ridge building eastward over the forecast area
while the upper low to the southwest further weakens. Despite
large scale subsidence, there will remain enough atmospheric
moisture to combine with the sea breeze to support isolated
diurnal convection along the sea breeze. Temperatures will push
into the mid 90s away from the coast Fri Sat under plenty of
sunshine while the sea breeze will limit MAX temps to around 90
to the lower 90s. This will result in heat indices in the 100 to
105 range during this period.

The upper ridge will begin to break down on Sunday as upper
heights start to fall in response to a digging trough over the
great lakes into the ohio valley region. This will result in an
increase in pops with increasing moisture advection into the
region and with increasing clouds, temperatures will moderate a
bit back near normal values.

Long term Sunday night through Thursday
A more active and synoptically driven weather pattern expected
during the extended forecast period. Slow moving positively
tilted upper trough will settle over the east coast early next
week combining with increasing atmospheric moisture with a
continued southerly circulation associated with the bermuda
high. Precipitable water values will be at or above 2 inches
resulting in increasing pops each day through Wednesday. Expect
highest chances of pops on tues Wed as a surface boundary will
push into the area and stall.

There is some uncertainty towards the end of the extended
period as the GFS is showing some drier air pushing in from the
north while the ECMWF keeps much deeper moisture over the
forecast area with a lingering upper trough axis along the
coast.

Temperatures during this period will generally be near normal
for MAX temperatures but slightly above normal for min
temperatures due to extensive cloud cover.

Aviation 22z Thursday through Tuesday
Vfr.

Extended aviation outlook:VFR conditions will prevail.

Marine
Tonight: the atlantic surface ridge will tend a bit tonight
with winds 10-15 kt at times. Seas through tonight 2 ft near
shore and 2-3 ft well offshore.

The weekend will feature a typical summer pattern with bermuda
ridge holding strong and influencing the coastal waters.

Generally light to moderate southwesterly winds backing during
the afternoon near the coast due to the sea breeze. Incoming
swell is low and expected seas 2 to 4 ft through the weekend
into early next week, mainly due to the local wind.

Tides coastal flooding
Coastal flood advisory for the lower south carolina coast.

Elevated tide levels due to the lunar perigee and new moon will
result in the possibility for minor coastal flooding during the
evening high tides this weekend into early next week, especially
along the sc coast.

Chs watches warnings advisories
Ga... None.

Sc... Coastal flood advisory until 8 pm edt this evening for
scz048>050.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 20 mi58 min S 1 85°F 1016 hPa76°F
41033 26 mi35 min SW 14 G 18 83°F 84°F1016.1 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 32 mi43 min WNW 6 G 7 83°F 86°F1017.5 hPa (-0.6)
FBIS1 - Folly Island, SC 51 mi43 min S 12 G 14 84°F 1016.9 hPa (-1.8)76°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 mi47 minWSW 1010.00 miMostly Cloudy83°F73°F72%1016.4 hPa
Beaufort County Airport, SC11 mi48 minW 107.00 miMostly Cloudy82°F69°F66%1016.6 hPa
Hilton Head Island, Hilton Head Airport, SC20 mi53 minWSW 810.00 miMostly Cloudy86°F73°F66%1017.3 hPa

Wind History from NBC (wind in knots)
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Last 24hrCalmE3S5S4S5S4CalmSW3CalmCalmCalmCalmCalmCalmCalmCalmCalm43Calm4S6S5SW10
1 day agoS4S5S5S3CalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalm3CalmCalmSE4SE6S5S4NE17
G25
2 days agoCalmS3CalmCalmS3W3CalmCalmCalmSW3CalmCalmNW5NW3NW3NW4NW5N4CalmCalmSE3CalmSE4S4

Tide / Current Tables for RR. Bridge, Hall Island, South Carolina
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RR. Bridge
Click for Map
Thu -- 01:15 AM EDT     0.16 feet Low Tide
Thu -- 03:40 AM EDT     Moonrise
Thu -- 06:29 AM EDT     Sunrise
Thu -- 07:19 AM EDT     8.09 feet High Tide
Thu -- 01:28 PM EDT     -0.75 feet Low Tide
Thu -- 05:49 PM EDT     Moonset
Thu -- 07:52 PM EDT     9.86 feet High Tide
Thu -- 08:29 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.20.51.83.85.77.387.86.74.92.80.7-0.6-0.60.83.15.789.59.99.17.55.4

Tide / Current Tables for North Dawson Landing, Coosawhatchie River, South Carolina
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North Dawson Landing
Click for Map
Thu -- 02:01 AM EDT     0.18 feet Low Tide
Thu -- 03:40 AM EDT     Moonrise
Thu -- 06:30 AM EDT     Sunrise
Thu -- 08:14 AM EDT     7.75 feet High Tide
Thu -- 02:14 PM EDT     -0.82 feet Low Tide
Thu -- 05:50 PM EDT     Moonset
Thu -- 08:29 PM EDT     Sunset
Thu -- 08:47 PM EDT     9.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.60.90.20.72.13.95.77.17.77.46.24.32.20.3-0.8-0.41.13.35.87.99.19.48.66.9

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 (18,4,5,8)
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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.