Saturday, February17, 2018 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 6:59AMSunset 6:08PM Saturday February 17, 2018 10:05 PM EST (03:05 UTC) Moonrise 8:09AMMoonset 7:56PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 958 Pm Est Sat Feb 17 2018
Overnight..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W late. Seas 2 to 3 ft.
Sun..N winds 10 to 15 kt, becoming ne 15 to 20 kt in the afternoon. Seas 2 to 4 ft.
Sun night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 ft. A slight chance of showers.
Mon..SE winds 10 kt. Seas 2 ft.
Mon night..S winds 10 kt. Seas 2 ft.
Tue..S winds 10 kt. Seas 2 to 3 ft.
Tue night..S winds 10 kt. Seas 3 ft.
Wed..S winds 10 kt. Seas 3 ft.
Thu..SW winds 10 kt. Seas 3 ft, then 2 to 4 ft.
AMZ200 958 Pm Est Sat Feb 17 2018
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Weak high pressure will break down this evening. A modest cold front will approach from the nw late tonight and push across and south of the local waters Sunday morning before stalling. High pressure will temporarily build in from the N thru ne Sunday thru Sunday night. The stalled front will return back to the north as a warm front early Monday. Bermuda high pressure will follow and build across the waters late Monday and prevail through Thursday.

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 180243
afdchs
area forecast discussion
national weather service charleston sc
943 pm est Sat feb 17 2018

Synopsis
A stationary front will meander across the region into Sunday.

The front will lift north Monday, followed by high pressure
prevailing for most of next week. A cold front may approach
late next week.

Near term until 6 am Sunday morning
The warm front has lifted north of the entire forecast area, and
will give way to an approaching cold front from the w-nw
overnight, as it moves into the atlantic close to dawn on
Sunday. There is limited forcing and low level convergence for
any showers with the front, but there is an increase in low and
mid level moisture which arrives late in the form of scattered
to broken stratocumulus altocumulus clouds.

The sea fog is eroding as anticipated as winds are turning more
sw on the ga coast and s-sw on the sc coast, and will continue
to force the lingering fog over charleston county back into the
atlantic after midnight. The rest of the land based zones will
be free of any significant fog, until maybe around 6-7 am when
some advection fog stratus could arrive from s-sw of the
altamaha and impact a few places of mcintosh and long counties.

It'll be another abnormally warm and humid night for mid-
february across the local district, with lows of 55-60f or about
15-20f above what is normal.

Short term 6 am Sunday morning through Tuesday
The mid upper levels will consist of west southwest flow on Sunday.

The flow will turn more to the southwest on Monday as ridging
develops to our east, with a broad high centered east of fl. The
high ridge will strengthen amplify on Tuesday, turning our flow to
the south southwest. At the surface, a stationary front will hover
over or just south of the region Sunday as high pressure passes to
our north. The front will start to migrate north Sunday night as the
high shifts offshore. The front will advance northward as a warm
front on Monday, quickly moving north of our area and accelerating.

At the same time, atlantic high pressure will be building into our
area. The western periphery of the high will become more dominant
across the southeast on Tuesday. Pwat's across our area will be
~1.5" on Sunday, before falling to ~1" Monday and Tuesday. Despite
the front nearby or overhead on Sunday and Monday, there is not much
lift across our area. The result is a low probability of light
showers each of these two days, generally located around the
vicinity of the front. Tuesday a few showers are possible over
inland areas as weak impulses round the western periphery of the
high during the day. QPF will be minimal each day, if anything does
fall. Instability is very weak to nonexistent, so no thunderstorms
are forecasted. Temperatures will be above normal each day.

Temperatures will trend upwards Monday and Tuesday within generally
southerly flow. In fact, we won't be too far away from record highs
these two days.

Long term Tuesday night through Saturday
A large ridge of high pressure centered over the western atlantic
will be the primary contributor to the pattern over the southeast
united states, helping produce warm conditions into late week. In
general, temps will be well above normal, peaking into the upper
70s lower 80s Wednesday and Thursday afternoon. A few showers will
be possible inland during peak heating each day, with slightly
greater coverage and the potential for a few thunderstorms on
Thursday when mid-lvl energy approaches the western periphery of the
high. A few showers could linger into Thursday night as a weak cold
front approaches the area. Weak mid-lvl energy should then traverse
the southeast within a zonal flow this weekend, potentially
producing a few showers and slightly cooler conditions.

Aviation 03z Sunday through Thursday
Kchs: a widespread region of low stratus will impact the
terminal early tonight, resulting in ifr or potential lifr
conditions. As the flow veers more SW overnight there will be
some improvement in conditions (ifr or even MVFR) as the
stratus pushes back toward the ocean. Low endVFR should return
behind a cold front late tonight and Sunday, although MVFR is
still a possibility.

Ksav:VFR is expected to prevail tonight, before MVFR and
possible ifr ceilings develop early Sunday and persist through
the entire day as a cold front pushes through and stalls to the
south.

Extended aviation outlook: a stationary front could bring flight
restrictions Monday.

Marine
Overnight: the sea fog is continuing to erode from the S SW and
is almost gone from the waters off the coasts south of the
edisto river, where we have cancelled the previous dense fog
advisory for amz352. However, until winds turn completely SW on
the charleston county atlantic waters and in charleston harbor,
around 1 am, we still have a dense fog advisory going for those
two marine zones for visibility down near 1 4 nm or less.

Regarding winds and seas, s-sw winds at or below 15 kt early
will veer around to the SW and W late as a cold front draws
closer from land areas. Seas will average 2-3 ft, and holding
that way through the night.

Sunday through Thursday: a stationary front will meander across the
region Sunday. The front will lift north Monday, followed by
atlantic high pressure prevailing for most of next week. Expect a
brief increase in winds across the sc waters Sunday due to a
modifying pressure gradient, but nothing that would warrant marine
headlines. Winds will then ease Sunday night. Wind directions will
also change into Monday with the shifting front, then becoming more
stable in direction afterwards with high pressure. Overall, no
significant winds or waves are forecasted through next Thursday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Dense fog advisory until 1 am est Sunday for amz330-350.

Near term...

short term... Ms
long term... Dpb
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi81 min S 4.1 54°F 1020 hPa54°F
41029 - Capers Nearshore (CAP 2) 35 mi58 min SSW 7.8 G 12 55°F 56°F1019.2 hPa
CHTS1 39 mi48 min SSW 7 G 11 60°F 58°F1020 hPa
FBIS1 - Folly Island, SC 45 mi66 min SSW 8.9 G 9.9 59°F 1020.2 hPa (+0.0)59°F
MROS1 - 8661070 - Springmaid Pier, SC 47 mi48 min 1022.5 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC19 mi71 minSSW 51.25 miFog/Mist55°F53°F94%1020 hPa
Moncks Corner Berkeley County, SC21 mi71 minS 57.00 miMostly Cloudy59°F57°F94%1019 hPa

Wind History from GGE (wind in knots)
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Last 24hrSW6W3N7NE7NE6NE8
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NE7E8NE6E5N4NE3CalmSE6CalmS4
1 day agoSW4SW5SW6SW10SW9SW9SW12SW10SW9W10SW12W12
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2 days agoSW3CalmCalmSW3SW3CalmSW5SW4SW4SW4SW5SW9SW10W12W13
G19
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S13S7
G14
S7SW7SW7SW4

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
Click for Map
Sat -- 12:43 AM EST     1.10 feet High Tide
Sat -- 07:00 AM EST     Sunrise
Sat -- 08:08 AM EST     Moonrise
Sat -- 09:08 AM EST     -0.08 feet Low Tide
Sat -- 01:11 PM EST     1.20 feet High Tide
Sat -- 06:05 PM EST     Sunset
Sat -- 07:55 PM EST     Moonset
Sat -- 09:37 PM EST     -0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.110.90.70.50.30.1-0-0.10.10.611.21.21.10.90.70.50.30.1-0-00.4

Tide / Current Tables for Pleasant Hill Landing, Santee River, South Carolina
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Pleasant Hill Landing
Click for Map
Sat -- 06:30 AM EST     -0.19 feet Low Tide
Sat -- 06:59 AM EST     Sunrise
Sat -- 08:08 AM EST     Moonrise
Sat -- 11:20 AM EST     2.39 feet High Tide
Sat -- 06:04 PM EST     Sunset
Sat -- 06:59 PM EST     -0.10 feet Low Tide
Sat -- 07:55 PM EST     Moonset
Sat -- 11:29 PM EST     2.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.81.40.90.40.1-0.2-0.10.51.322.42.42.11.81.30.80.30-0.10.211.82.2

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.