Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
James, SC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:09AMSunset 7:40PM Wednesday March 29, 2017 1:21 AM EDT (05:21 UTC) Moonrise 7:23AMMoonset 8:33PM Illumination 3% 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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AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 943 Pm Edt Tue Mar 28 2017
Overnight..SW to W winds 10 to 15 kt...becoming nw late. Seas 3 to 5 ft...subsiding to 2 to 4 ft.
Wed..N winds 10 kt...becoming ne in the afternoon. Seas 2 to 4 ft.
Wed night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Thu..E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 ft.
Thu night..SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 ft...then 3 to 5 ft after midnight. A slight chance of showers with isolated tstms.
Fri..SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft... Building to 4 to 6 ft in the afternoon. Showers and tstms.
Fri night..S winds 15 to 20 kt...becoming sw 10 to 15 kt after midnight. Seas 4 to 6 ft. Showers and tstms likely.
Sat..W winds 10 to 15 kt...becoming N 10 kt. Seas 3 to 5 ft... Subsiding to 2 to 3 ft.
Sun..E winds 10 to 15 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.
AMZ200 943 Pm Edt Tue Mar 28 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A cold front will sink southward...crossing the area waters late tonight thru early Wed. High pressure will follow and build across the area from the north Wed night thru Thu night. A more dynamic cold front will push across the area by late Fri. High pressure will follow for the weekend.

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 290454
afdchs
area forecast discussion
national weather service charleston sc
1254 am edt Wed mar 29 2017

Synopsis
A weak front will stall over or near the area Wednesday, then move
north as a warm front Thursday night. A cold front will move through
Friday night followed by dry high pressure into Sunday. Unsettled
weather could return as soon as next Monday.

Near term /until 6 am this morning/
Skies should remain mainly clear overnight. The back door cold
front currently across northern south carolina will move south
into northern areas late. No significant changes to the forecast
on the midnight update.

Short term /6 am this morning through Friday/
A cold front will push southward through the area on Wednesday,
pushed by high pressure to our north. Drier air and minimal synoptic
forcing will yield mainly dry conditions with this front, although
we still can't rule out a few light showers near the altamaha river,
which will be closer to the stalled front. The weather should be dry
until later Thursday when deeper moisture returns and isentropic
ascent increases across the area. The front will move northward as a
warm front Thursday night. Thus, showers and possibly a few
thunderstorms (mainly across ga) are expected. Focus remains on
Friday. Moisture keeps increasing ahead of a cold front that will
approach from the west. Although wind fields will be strengthening,
instability isn't overly impressive. The models have backed off on
the intensity and strength of the front, especially as it
approaches our area during the day. The threat for severe weather is
low at this time. Either way it should be a breezy day with gusts up
to around 25 mph.

Temperatures should push into the lower to mid 80s most inland
locales Wednesday, with some upper 80s possible given the offshore
flow and frontal compression. On Thursday, high pressure building
from the north will keep it a bit cooler, especially across sc where
it should stay below 80 degrees except close to the savannah river.

Once again wouldn't be surprised if upper 80s occurred Thursday
toward inland portions of the altamaha river closer to the stalled
front. Temperatures Friday will be moderated by the clouds/rain,
likely only reaching close to 80 inland. Prevailing onshore winds
will keep coastal locations much cooler during the daytime through
the period.

Long term /Friday night through Tuesday/
A cold front will push through Friday night into Saturday followed
by drier high pressure Sunday. Unsettled weather could return early
next week as a storm system moves across the deep south, although
there remains significant uncertainty regarding the timing of best
rain chances. Highest confidence in rain will be the first part of
Friday night when showers, and possibly some thunderstorms, are
expected. Temperatures should remain above normal through the
period.

Aviation /06z Wednesday through Sunday/
Vfr at ksav and kchs through 06z Thursday.

Extended aviation outlook: flight restrictions are possible
Wednesday night into Thursday morning due to low clouds and/or fog,
then likely due to showers/thunderstorms/low clouds Thursday night
into Friday.

Marine
Decreasing winds/seas tonight as the pressure gradient weakens
and a weak front approaches from the north. We lowered seas to
3-4 ft over charleston waters on the midnight update, otherwise
forecast in good shape.

Wednesday through Sunday: a weak cold front will move into the area
Wednesday as high pressure builds to the north. The front may stall
over or just souther of our ga waters Wednesday night, before moving
back north through our area as a warm front Thursday night. A cold
front will then move through late Friday, followed by high pressure
for the weekend.

Small craft advisories for winds and seas will probably start across
the ga waters Thursday night, expanding northward into the sc waters
through Friday and Friday night.

Rip currents: moderate risk for rip currents along the sc coast
Wednesday. Gusty winds and long period 3 foot swells will likely
produce rip currents. The combination of higher than normal tides,
onshore winds and swells in the surf zone will support an enhanced
risk for rip currents, possibly lasting into Friday.

Tides/coastal flooding
Strengthening onshore winds combined with swells impacting the coast
will cause saltwater inundation, especially in vulnerable coastal
areas. The Wednesday evening high tide could reach advisory levels,
while the Thursday evening high tide could approach warning levels.

Coastal flood headlines are expected with each of these tide cycles.

Additionally, some coastal flooding could occur with the Friday
evening high tide cycle.

Chs watches/warnings/advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

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

marine...

tides/coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi97 min WSW 6 67°F 1014 hPa62°F
CHTS1 39 mi52 min SW 5.1 G 8 66°F 64°F1014.7 hPa
FBIS1 - Folly Island, SC 45 mi82 min SW 8.9 G 11 65°F 1015.3 hPa (+0.6)63°F
MROS1 - 8661070 - Springmaid Pier, SC 47 mi52 min 1013.3 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC19 mi27 minWSW 610.00 miFair61°F60°F100%1014.2 hPa
Moncks Corner Berkeley County, SC21 mi27 minWSW 310.00 miFair63°F60°F94%1014.2 hPa

Wind History from GGE (wind in knots)
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Last 24hrS4SW5S6CalmSW5SW5SW6SW12
G16
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S12S9S9SW8S5SW6SW6SW5SW4SW5W5
1 day agoCalmCalmCalmCalmCalmCalmCalmSW3S8S7CalmS4S7
G16
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S5S4S5S3CalmCalmCalmCalm
2 days agoCalmS3CalmCalmCalmCalmCalmSE3S9SE10SE13S9SE13
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SE10SE5SE5CalmCalmCalmCalmCalm

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
Click for Map
Wed -- 01:38 AM EDT     1.38 feet High Tide
Wed -- 07:10 AM EDT     Sunrise
Wed -- 08:22 AM EDT     Moonrise
Wed -- 10:09 AM EDT     -0.20 feet Low Tide
Wed -- 02:06 PM EDT     1.28 feet High Tide
Wed -- 07:37 PM EDT     Sunset
Wed -- 09:32 PM EDT     Moonset
Wed -- 10:27 PM EDT     -0.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.91.31.41.31.10.90.60.30.1-0.1-0.2-00.61.11.31.21.10.90.60.40.1-0.1-0.2-0.1

Tide / Current Tables for Pleasant Hill Landing, Santee River, South Carolina
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Pleasant Hill Landing
Click for Map
Wed -- 07:09 AM EDT     Sunrise
Wed -- 07:31 AM EDT     -0.47 feet Low Tide
Wed -- 08:22 AM EDT     Moonrise
Wed -- 12:15 PM EDT     2.56 feet High Tide
Wed -- 07:36 PM EDT     Sunset
Wed -- 07:49 PM EDT     -0.53 feet Low Tide
Wed -- 09:31 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.82.62.21.610.4-0.1-0.4-0.40.31.32.12.52.52.21.71.10.5-0.1-0.4-0.501.12.1

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 (1,6,7,8)
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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.