Friday, May26, 2017 L-36.com


Marine Weather and Tides
James, 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 6:12AMSunset 8:21PM Friday May 26, 2017 10:14 PM EDT (02:14 UTC) Moonrise 6:09AMMoonset 8:23PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 929 Pm Edt Fri May 26 2017
Overnight..SW winds 10 to 15 kt. Seas around 3 ft.
Sat..SW winds 10 to 15 kt...increasing to 15 to 20 kt in the afternoon. Seas around 3 ft.
Sat night..SW winds 15 to 20 kt...diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft.
Sun..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Sun night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Mon..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft.
Mon night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Tue..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms.
Wed..SW winds 10 kt. Seas 1 to 2 ft...then 2 to 3 ft. Winds and seas higher in and near tstms.
AMZ200 929 Pm Edt Fri May 26 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will dominate through Saturday. A cold front will approach from the north late Sunday and then remain in the area through much of next week which will keep the threat for showers and Thunderstorms each day.

7 Day Forecast for Marine Location Near James, SC
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location: 33.31, -79.68     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 270155
afdchs
area forecast discussion
national weather service charleston sc
955 pm edt Fri may 26 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 until 6 am Saturday morning
Clear skies and light calm winds will promote excellent
radiational cooling away from the coast tonight. The current
forecast appears to be in good shape and required only very
minor adjustments.

Short term 6 am Saturday morning through Monday
Deep and broad upper level ridging across the western gulf of mexico
will gradually shift eastward, moving into the southwestern atlantic
ocean my the end of the period. This will result in weak cyclonic
northwest flow aloft becoming southwest by Monday.

Saturday and Saturday night: other than some high level debris
clouds from far upstream convection, skies should be clear. A
relatively dry atmosphere will preclude the development of any
precipitation. 850 mb temperatures from 18 to 20 degrees celsius
and deep mixing support high temperatures in the lower 90s in
most locations and with the sea breeze only slowly moving inland
area beaches should reach the upper 80s. With increasing low
level moisture, low temperatures should only drop into the upper
60s with lower to perhaps mid 70s at the coast.

Sunday and Sunday night: increasing low level moisture and very
warm afternoon temperatures will push the heat indices to near
or just over 100 degrees in many areas. Besides some high level
clouds, there will be some afternoon cumulus clouds. CAPE values
will increase to 2000 to 2500 j kg by afternoon and this
combined with decent wind shear, any thunderstorms that develop
could become strong to severe. However, despite some convergence
along the sea breeze, a capping inversion should keep
convection from forming. In addition, a back door cold front
should remain north of the area. Maintained a slight chance for
thunderstorms across mainly northern berkeley county on Sunday
in case the front is a bit faster, with the threat spreading a
bit further south and west Sunday night. High Sunday will be a
few degrees higher than Saturday, mainly in the lower to mid
90s.

Monday: a continued increase in low level moisture will result
in a bit more cloud cover than on Sunday and this and some
showers and thunderstorms will result in high temperatures a
couple degrees lower than those expected on Monday. Afternoon
cape values from 2000 to 3000 j kg and modest winds off the
surface support a threat for strong the severe thunderstorms.

Highest rain chances in the northwest transitioning to no
mentionable pops in the far south.

Long term Monday night through Friday
The cold front will essentially stall over the area on Tuesday
while another round of shortwaves move through. Scattered
showers and tstms are expected to develop. Severe weather
potential will heavily depend on how extensive the cloud cover
is during the morning.

The remainder of the week looks somewhat unsettled as upper
shortwaves continue to lift northeast through the region.

Aviation 02z Saturday through Wednesday
Vfr.

Extended aviation outlook: other than some subVFR conditions in and
near mainly afternoon and evening showers and thunderstorms in the
early to middle part of next week,VFR conditions should
prevail.

Marine
Tonight: high pressure centered south of the area will result in
mainly southwesterly flow. Winds will gust near 20 kt through
early evening across the charleston county waters where the
tightest pressure gradient is located. Seas will mainly be 2-3 feet.

Saturday through Wednesday... With large atlantic high pressure
ridging towards the bahamas and lower pressure to the north and
northwest of the waters, southwesterly winds of generally 12 to
17 knots should prevail through Monday. Seas of mainly 2 to 3
feet will be common.

Relatively weak winds will ensue as a front stalls over the area
in the early to middle part of next week.

Tides coastal flooding
Tides will be running high through the weekend due to the imminent
new moon and perigee. Fortunately the wind directions are not
very conducive for significantly increasing water levels but
cannot rule out some minor coastal flooding during the evening
high tides, mainly along the sc coast. For tonight, the latest
trends suggest tide levels in charleston harbor will likely
fall just below advisory levels.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi89 min W 1.9 74°F 1014 hPa60°F
41029 - Capers Nearshore (CAP 2) 35 mi66 min WSW 12 G 18 81°F 76°F1014.5 hPa
CHTS1 39 mi44 min SSW 2.9 G 5.1 76°F 77°F1015.2 hPa
FBIS1 - Folly Island, SC 45 mi74 min SW 8 G 11 76°F 1015.5 hPa (+0.3)66°F
MROS1 - 8661070 - Springmaid Pier, SC 47 mi44 min 1013.7 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC19 mi19 minN 010.00 miFair64°F60°F88%1015.2 hPa
Moncks Corner Berkeley County, SC21 mi19 minN 07.00 miFair64°F59°F83%1015.2 hPa

Wind History from GGE (wind in knots)
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Last 24hrSW6SW7SW6SW6SW5SW5W4SW6W5SW4W6W6W6NW8W10
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2 days agoS4SW6SW5SW4SW5SW6W5SW5S3CalmSW5SW7SW8S8S9
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Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
Click for Map
Fri -- 01:01 AM EDT     1.53 feet High Tide
Fri -- 06:12 AM EDT     Sunrise
Fri -- 07:09 AM EDT     Moonrise
Fri -- 09:36 AM EDT     -0.19 feet Low Tide
Fri -- 01:29 PM EDT     1.23 feet High Tide
Fri -- 08:19 PM EDT     Sunset
Fri -- 09:23 PM EDT     Moonset
Fri -- 09:44 PM EDT     -0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.51.51.31.10.80.50.2-0-0.2-0.10.30.81.21.21.10.90.70.40.1-0.1-0.3-0.30.1

Tide / Current Tables for Pleasant Hill Landing, Santee River, South Carolina
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Pleasant Hill Landing
Click for Map
Fri -- 06:11 AM EDT     Sunrise
Fri -- 06:58 AM EDT     -0.45 feet Low Tide
Fri -- 07:09 AM EDT     Moonrise
Fri -- 11:38 AM EDT     2.46 feet High Tide
Fri -- 07:06 PM EDT     -0.68 feet Low Tide
Fri -- 08:18 PM EDT     Sunset
Fri -- 09:22 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
32.62.11.40.70.1-0.3-0.4-00.91.82.32.42.21.81.20.6-0-0.5-0.7-0.30.71.82.7

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 (22,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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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.