Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Ridgeland, SC

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:15AMSunset 8:34PM Wednesday June 20, 2018 8:56 PM EDT (00:56 UTC) Moonrise 12:39PMMoonset 12:34AM Illumination 51% Phase: First Quarter Moon; Moon at 8 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- 617 Pm Edt Wed Jun 20 2018
Tonight..SW winds 10 to 15 kt. Seas 3 ft. A slight chance of showers and tstms after midnight.
Thu..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the morning.
Thu night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Fri..W winds 10 kt, becoming sw in the afternoon. Seas 2 ft. A slight chance of showers and tstms.
Fri night..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms.
Sat..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms.
Sat night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Sun..SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Sun night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Mon..SW winds 10 kt. Seas 2 to 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. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 617 Pm Edt Wed Jun 20 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The region will remain between atlantic high pressure well the east and an inland trough of low pressure through later this week. The trough of low pressure is expected to settle over the region and will likely persist into early next week. A cold front could push into the region by the middle of next week.

7 Day Forecast for Marine Location Near Ridgeland, SC
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location: 32.41, -80.89     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 202224
afdchs
area forecast discussion
national weather service charleston sc
624 pm edt Wed jun 20 2018

Synopsis
The region will remain between atlantic high pressure well the
east and an inland trough of low pressure through later this
week. The trough of low pressure is expected to settle over the
region and will likely persist into early next week. A cold
front could push into the region by the middle of next week.

Near term until 6 am Thursday morning
This evening: scattered convection west of i-95 ongoing. Due to
multiple boundary collisions and ample cape, isolated strong to
severe storms will be possible for the next hour or two. Main
threat with any stronger storms will be strong winds and
possibly small hail. Convection should be over by around 10 pm,
or sooner.

Have tweaked pops to match areas well inland expected to receive
convection, but due to relatively low coverage, kept in the
chance range.

Temperatures have recently fallen considerably into the mid to
upper 80s across many areas, but given very humid airmass, still
expect them to only fall very slowly the rest of the night.

Minimum temperatures by morning will be in the mid to upper 70s
most areas away from the coast. Possibly not going much below 80
within a few miles of the coast.

Short term 6 am Thursday morning through Saturday
The biggest change in the overall pattern through the rest of the
week and into early this weekend is that the strong mid upper level
ridge will gradually weaken. The ridge weakens in response to a
strong upper low that models have been persistently showing will form
over the central u.S. And slowly move east-northeast toward the
lower great lakes by the end of the period. In addition, deep layer
moisture increases some. The combination of lower mid upper heights,
better deep layer moisture and some vorticity advection will result
in slightly higher pops, generally in the chance range, each
afternoon. The difficulty is that the best moisture does not
necessarily coincide with any weak upper level forcing each day,
which is why we left chance pops for mainly afternoon evening. The
best deep layer moisture looks to be Thursday, but oddly, guidance
is reflecting slightly lower pops. Given the lower upper
heights and the potential for some large scale weak upper forcing,
there may be a slightly higher chance for strong to low end severe
storms each afternoon. However, the chances are not enough to
mention in the forecast or hwo at this point.

Temperatures will remain well above normal, but not quite as hot as
last few days as upper heights fall by about 5 decameters. Guidance
showing considerable drop in surface dewpoint temperatures on
Thursday, which seems a little suspect, but did keep upper 60s
inland and lower to mid 70s at the coast. The combination of
slightly lower dewpoints and temperatures will lead to lower heat
indices, but still in the lower 100s likely each afternoon. Lows
very warm, in the mid to upper 70s, to around 80 at the coast.

Long term Saturday night through Wednesday
The upper ridge will temporarily rebuild over the southeast on
Sunday, causing temperatures to rise back into the middle 90s,
reducing convective coverage, and potentially requiring heat
advisories. A substantial upper vort MAX is forecast to drop
southeast into the area Monday, pushing a weak back door cold
front through the area Monday night or Tuesday. There is
increasing model agreement that temps will be a couple degrees
cooler next Tuesday and Wednesday.

Aviation 22z Wednesday through Monday
18z tafs: mainlyVFR. Showers and thunderstorms have skirted
ksav, but we will keep at least vcts mention in there taf
until ~22z. Further north, convection has remained far away from
kchs. But given the convective potential, we'll leave vcts in
there TAF for now. Conditions are forecasted to quickly
improve late this evening as the convection decreases, withVFR
prevailing overnight.

Extended aviation outlook:
through this weekend: mostlyVFR conditions. However, chances
for afternoon convection will be slightly higher through much of
the period, which will result in slightly higher chances for
brief convectively induced flight restrictions.

Marine
Tonight: south winds have increased due to diurnal enhancements
of the mixed layer at the beaches. Speeds should top out in the
15-20 kt range this evening, mainly within 10-15 nm. Winds are
expected to ease to the 10-15 kt range overnight. Seas will
generally average 2-4 ft.

Long term marine... (Friday through Thursday)... No highlights
expected through Monday. The marine area will remain between
atlantic high pressure well to the east and lower pressure over
the land. This will produce southwest winds of mainly 15 knots
or less, highest during the afternoon and near the coast with
the sea breeze, with seas 2 to 3 feet. By the end of the
period early next week, models are indicating the potential for
a cold front to approach from the north, which could increase
the pressure gradient enough to produce 15-20 knot winds.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Rfm
short term...

long term... Jrl
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 25 mi71 min Calm 85°F 1011 hPa79°F
FPKG1 - 8670870 - Fort Pulaski, GA 26 mi38 min WSW 4.1 G 6 83°F 81°F1011.2 hPa
41033 27 mi48 min SW 16 G 21 82°F 83°F1010.9 hPa
FBIS1 - Folly Island, SC 56 mi56 min SW 11 G 14 82°F 1012 hPa (+0.4)79°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, SC10 mi60 minS 410.00 miMostly Cloudy85°F80°F85%1010.9 hPa
Beaufort County Airport, SC14 mi61 minSSW 67.00 miFair82°F77°F84%1011.2 hPa
Hilton Head Island, Hilton Head Airport, SC17 mi66 minS 810.00 miPartly Cloudy84°F80°F89%1011.5 hPa

Wind History from NBC (wind in knots)
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Last 24hrS7S5S5S5S4SW5SW6SW4W5CalmSW3SW43SW5SW75S55SE6S6S5S4S4S4
1 day agoS6S5S4S3S3S4--SW6SW3SW4SW3SW5SW5SW6Calm--W55SE6SE7SE6S6S6S6
2 days agoS3S3CalmCalmCalmCalmW3CalmCalmCalmCalmSW4SW7S6Calm3CalmS5S5SE7SE7S9
G16
S6S5

Tide / Current Tables for Broughton Point, Hazzard Creek, Broad River, South Carolina
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Broughton Point
Click for Map
Wed -- 01:34 AM EDT     Moonset
Wed -- 03:51 AM EDT     8.20 feet High Tide
Wed -- 06:16 AM EDT     Sunrise
Wed -- 06:52 AM EDT     First Quarter
Wed -- 10:13 AM EDT     -0.15 feet Low Tide
Wed -- 01:38 PM EDT     Moonrise
Wed -- 04:36 PM EDT     7.84 feet High Tide
Wed -- 08:33 PM EDT     Sunset
Wed -- 10:44 PM EDT     0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.84.86.67.88.27.66.24.32.30.7-0.10.21.43.25.16.77.77.875.53.71.90.60.3

Tide / Current Tables for Hwy. 170 bridge, Broad River, South Carolina
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Hwy. 170 bridge
Click for Map
Wed -- 01:34 AM EDT     Moonset
Wed -- 03:08 AM EDT     7.90 feet High Tide
Wed -- 06:16 AM EDT     Sunrise
Wed -- 06:52 AM EDT     First Quarter
Wed -- 09:29 AM EDT     -0.17 feet Low Tide
Wed -- 01:38 PM EDT     Moonrise
Wed -- 03:53 PM EDT     7.55 feet High Tide
Wed -- 08:33 PM EDT     Sunset
Wed -- 10:00 PM EDT     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.15.97.37.97.66.44.72.71-0-00.92.64.46.17.27.575.84.12.30.90.30.8

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (20,4,5,8)
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Ground Weather Radar Station Charleston, SC
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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.