Wednesday, November22, 2017 L-36.com


Marine Weather and Tides
James, 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 6:56AMSunset 5:16PM Wednesday November 22, 2017 5:52 AM EST (10:52 UTC) Moonrise 10:14AMMoonset 8:44PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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- 416 Am Est Wed Nov 22 2017
.small craft advisory in effect from this evening through Thursday afternoon...
Today..N winds 10 to 15 kt. Seas 3 to 5 ft.
Tonight..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, building to 4 to 6 ft after midnight. A chance of rain.
Thu..NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft, subsiding to 3 to 5 ft in the afternoon. A chance of rain.
Thu night..NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 5 ft. A chance of rain.
Fri..NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. A chance of rain.
Fri night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain.
Sat..W winds 15 kt. Seas 2 to 4 ft.
Sun..N winds 10 to 15 kt. Seas 2 to 4 ft.
AMZ200 416 Am Est Wed Nov 22 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Wave of low pressure will lift off to the northeast this morning followed by a cold front later today. High pressure will build in through Thursday. Another area of low pressure will move up the coast and in the vicinity Thursday through Saturday. A dry cold front will move through Saturday night followed by canadian high pressure early next week.

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 220927
afdchs
area forecast discussion
national weather service charleston sc
427 am est Wed nov 22 2017

Synopsis
High pressure will gradually build across the area today. A
series of low pressure systems will track from the northern
gulf of mexico up the southeast coast tonight through Friday
night. A cold front will shift through the area Saturday night,
followed by dry high pressure through the middle of next week.

Near term through tonight
As of 425 am: latest sfc analysis indicated a stationary front
well off the coast with a cold front sliding over the southern
appalachians. High and mid level clouds have cleared in the wake
of a departing mid level shortwave. Given light winds, wet
soils, and clearing upper cloud cover, the environment has been
very supportive to the formation of stratus and fog. Latest
observations indicated that dense fog has developed across se
ga. Slight elevated winds across SE sc seems to kept the bl more
mixed, resulting in visibilities to range from .5-5 sm. I will
keep a dense fog advisory in place across SE ga until 10 am. It
is possible that the advisory may expand across the savannah
river early this morning as the cold front approaches. Fog and
stratus is expected to dissipate by mid morning. In fact, the
weak cold front is timed to push off the coast by 18z. As the
front passes, winds should shift from the nne and cloud cover
should see a several hour window of partly sunny conditions this
afternoon. High temperatures are forecast to range from around
70 across sc to the low 70s across SE ga.

Tonight: the sfc pattern will feature large high pressure
centered over WV and low pressure developing off the gulf coast
of fl. Moisture will gradually increase across the forecast area
tonight. However, low level isentropic lift appears to remain
south of the CWA through the overnight period. This forecast
package will feature much lower values of pops and keeps the
forecast dry until the predawn hours. Low temperatures are
forecast to range from the mid 40s across sc to the low 50s
across SE ga.

Short term Thursday through Saturday
The deep upper shortwave over the northern gulf of mexico on
Thursday will very slowly shift east and northeast, eventually
clearing our area on Saturday. A surface low will lift through
northern florida on Thursday, spreading atlantic moisture into
the area from the southeast. With high pressure firmly
entrenched inland, isentropic ascent will ensue, allowing light
showers to begin spreading in from the southeast during the
afternoon. The greatest QPF and overall coverage is expected
Thursday night when the center of the low is just off the sc ga
coast. However, a secondary low will spread another round of
rain into the area Friday and Friday night, primarily affecting
the coastal waters and land areas closer to the coastline. Both
days will feature below-normal temperatures in the upper 50s to
lower 60s.

By Saturday we expect clearing skies as the upper trough axis
shifts east and high pressure builds from the west. Downslope
flow will help push high temps into the mid upper 60s.

Long term Saturday night through Tuesday
Dry high pressure will prevail Saturday night through the middle
of next week. Cooler temps will be the rule Sunday into Monday
due to cold air advection, but a quick warm-up occurs mid-week
as the surface high shifts offshore.

Aviation 10z Wednesday through Sunday
Rain has generally pushed north and east of the terminals.

Clearing in the wake of the rainfall has created favorable
conditions for lifr to vlifr stratus and fog, especially across
se ga. Ksav should see very restrictive ceilings and vis through
the early daylight hours, improving toVFR by 16z. Kchs may see
a greater issue with lowering stratus than with dense fog
through 14z. Winds should remain light early this morning, with
north winds between 5-10 kts during the daylight hours.

Extended aviation outlook: an extended period of MVFR ifr
conditions expected from late Thursday night through Friday
night as low pressure moves up the coast.VFR conditions
should prevail at both terminals Saturday through Monday.

Marine
Today through tonight: a cold front will slide across the marine
zones during the mid day. Winds in the wake of the front will
shift out of the north then from the north-northeast this
afternoon through tonight. Build high pressure centered over wv
will provide a slightly steeper pressure gradient tonight,
supporting gusts into the lower 20 kts. Wave height should
slowly trend higher today and tonight. Waves are forecast to
range by late tonight from 3-5 feet within 20 nm to 5-6 feet
across the outer ga waters.

A northeast flow will continue Thursday through Friday night as
high pressure lingers inland and a series of surface lows move
up the coast. Wind speeds are expected to be near small craft
advisory level during this time, while seas are also expected to
climb to as high as 6 ft. Expansive high pressure will build
over the waters during the weekend into early next week.

Chs watches warnings advisories
Ga... Dense fog advisory until 10 am est this morning for gaz087-088-
099>101-114>119-137>141.

Sc... None.

Marine... None.

Near term... Ned
short term... Jrl
long term... Jrl
aviation... Jrl ned
marine... Jrl ned


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi67 min W 7 60°F 1014 hPa60°F
41029 - Capers Nearshore (CAP 2) 35 mi44 min NW 9.7 G 14 59°F 62°F1013.4 hPa
CHTS1 39 mi52 min WNW 5.1 G 11 62°F 61°F1013.6 hPa (-0.4)
FBIS1 - Folly Island, SC 45 mi52 min WNW 6 G 8.9 61°F 1014.2 hPa (-0.3)61°F
MROS1 - 8661070 - Springmaid Pier, SC 47 mi52 min 1013.1 hPa (-0.0)

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC19 mi57 minW 410.00 miOvercast59°F59°F100%1014.2 hPa
Moncks Corner Berkeley County, SC21 mi57 minNW 33.00 miFog/Mist57°F57°F100%1014.2 hPa

Wind History from GGE (wind in knots)
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Last 24hrN3NE3NE5NE4NE3NE6NE6NE6NE5NE5E4CalmCalmNE4E3E3E7SE4CalmCalmCalmCalmW3NW4
1 day agoCalmCalmCalmCalmNE8CalmE5NE3E5SE4SE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW11W7W12
G21
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NW8NW4CalmCalmCalmCalmN4N4N3CalmCalmCalmCalmCalm

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
Click for Map
Wed -- 01:55 AM EST     1.08 feet High Tide
Wed -- 06:56 AM EST     Sunrise
Wed -- 10:13 AM EST     Moonrise
Wed -- 10:14 AM EST     0.19 feet Low Tide
Wed -- 02:27 PM EST     1.26 feet High Tide
Wed -- 05:13 PM EST     Sunset
Wed -- 08:44 PM EST     Moonset
Wed -- 10:57 PM EST     0.25 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.711.11.110.80.70.50.40.20.20.30.711.21.21.21.10.90.70.50.40.30.3

Tide / Current Tables for Pleasant Hill Landing, Santee River, South Carolina
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Pleasant Hill Landing
Click for Map
Wed -- 12:04 AM EST     2.17 feet High Tide
Wed -- 06:55 AM EST     Sunrise
Wed -- 07:36 AM EST     0.44 feet Low Tide
Wed -- 10:12 AM EST     Moonrise
Wed -- 12:36 PM EST     2.51 feet High Tide
Wed -- 05:12 PM EST     Sunset
Wed -- 08:19 PM EST     0.59 feet Low Tide
Wed -- 08:43 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.11.91.61.30.90.70.50.50.91.62.12.52.52.42.11.81.410.70.60.71.21.7

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 (5,6,7,8)
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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.