Wednesday, September20, 2017 L-36.com


Marine Weather and Tides
Yemassee, 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 7:09AMSunset 7:22PM Wednesday September 20, 2017 12:19 PM EDT (16:19 UTC) Moonrise 6:26AMMoonset 6:56PM Illumination 0% Phase: New Moon; Moon at 29 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- 1123 Am Edt Wed Sep 20 2017
Rest of today..SW winds 5 to 10 kt, becoming S 10 kt. Seas 2 ft.
Tonight..SW winds 5 to 10 kt. Seas 2 ft.
Thu..W winds 5 kt, becoming S in the afternoon. Seas 2 ft.
Thu night..SE winds 5 to 10 kt. Seas 2 ft.
Fri..NE winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms.
Fri night..E winds 10 to 15 kt. Seas 4 to 5 ft, building to 4 to 6 ft after midnight. A slight chance of tstms in the evening. A slight chance of showers.
Sat..NE winds 15 to 20 kt. Seas 5 to 7 ft. A slight chance of showers.
Sat night..E winds 15 kt. Seas 6 to 8 ft.
Sun..NE winds 15 kt. Seas 6 to 8 ft.
Sun night..NE winds 10 to 15 kt. Seas 6 to 8 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1123 Am Edt Wed Sep 20 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will extend south across the region into early next week as hurricane maria moves northwest to near the bahamas this weekend and then likely north just off the southeast u.s. Coast.

7 Day Forecast for Marine Location Near Yemassee, SC
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location: 32.68, -80.74     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 201454
afdchs
area forecast discussion
national weather service charleston sc
1054 am edt Wed sep 20 2017

Synopsis
High pressure will extend south across the region into early
next week as hurricane maria moves northwest to near the
bahamas this weekend and then likely north just off the
southeast u.S. Coast.

Near term through tonight
Today: aloft, weak ridging will give way to a shortwave currently
seen on water vapor imagery. At the sfc, a weak high pressure
pattern will reflect a light westerly wind inland and a weak
seabreeze that eventually develops during peak heating this
afternoon. Despite an uptick in deep-layered moisture characterized
by pwats around 1.75 inches, a lack of significant forcing will
keep most areas dry. However, we can not rule out a few showers
during peak heating this afternoon away from the coast. In general,
afternoon highs will range in the upper 80s to lower 90s, warmest
away from the coast.

Tonight: mainly dry weather will persist but again not ruling
out isolated showers as a mid level vort lobe approaches the
region. We could see some area upgraded to a slight chance pop
overnight but for now, we maintained silent pops in the forecast.

Lows will range from the upper 60s inland to lower-mid 70s
right along the coast. There also may be some patchy fog inland
and northern zones late tonight.

Short term Thursday through Saturday
High pressure centered over eastern canada new england will continue
to ridge southward into the area. Meanwhile an extension of the
upper trough from the remnants of once hurricane jose off the
southern new england coast will linger over the region into
Saturday. Increased moisture instability and the sea breeze will
bring a risk for some showers and a few thunderstorms, mainly
Thursday and Friday afternoons. Some showers could linger into
Saturday mostly near the ga coast but drier air will be filtering in
from the north during the day. Temperatures will stay above normal
through the period, generally upper 80s to around 90 during the day
and around 70 at night.

Long term Saturday night through Tuesday
Inland high pressure will persist into early next week but the main
forecast concern is what will happen to hurricane maria which will
be near the bahamas this weekend. Much will likely depend on what
happens to jose which is expected to still be lingering off the
southern new england mid-atlantic coast. Just too much uncertainty
at this point so everyone is encouraged to pay close attention to
the forecast later this week into early next week. Best, albeit
small, rain chances look to be near the coast Friday night into
Saturday, assuming maria tracks well offshore. Temperatures look to
stay above normal.

Aviation 15z Wednesday through Sunday
Vfr conditions will prevail at chs and sav terminals through 12z
Thursday. Patchy MVFR vsbys are possible at either terminal late
tonight. Isolated convective rains may be possible with a short wave
moving through the region late today and tonight, but the potential
appears quite low at this time.

Extended aviation outlook: no significant concerns through mon,
although expect some impacts from late night early morning fog and
showers storms (mainly Thu fri).

Marine
Today and tonight: winds seas will remain below small craft advisory
levels through tonight. In general, a light southwest flow will
persist along western edge of high pressure with wind speeds no
higher than 10-15 kt. Seas will range between 2-3 ft with a
long-period swell from the east. Seas will be highest in offshore
georgia waters.

Thursday through Monday: no significant concerns before swells from
hurricane maria nearing the southeast bahamas later this week begin
to impact the waters Thursday night or Friday. Advisories will be
likely for the offshore waters starting Friday and the nearshore
waters starting Friday night. Seas could build to 10 feet or more
near the gulf stream Saturday night and persist in Monday, although
much depends on the exact track strength of hurricane maria.

Rip currents: increasing astronomical influences and a very
minor lingering swell component from jose will support another
moderate rip current risk at area beaches today.

Tides coastal flooding
Tides coastal flooding... Much of the coast remains vulnerable
in the wake of irma with many dune lines either completely
washed away or severely compromised. Even if the tide gages at
charleston harbor and fort pulaski fall short of shallow coastal
flooding criteria, some flooding problems are still likely with
many of the natural coastal protection systems compromised.

Powerful swells from hurricanes jose and maria will also drive
significant wave run-up, which could cause further erosion.

Thus, the potential for shallow coastal flooding will persist
into early next week around the times of high tide, particularly
along the sc coast.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Dpb
short term... Rjb
long term... Rjb
aviation... Dpb rjb
marine... Dpb rjb
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 17 mi94 min SSW 1 84°F 1018 hPa71°F
41033 33 mi71 min SW 7.8 G 9.7 80°F 1024.8 hPa
CHTS1 44 mi49 min SSW 2.9 G 5.1 88°F 80°F1017.4 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 45 mi49 min S 4.1 G 7 82°F 80°F1017.8 hPa
FBIS1 - Folly Island, SC 45 mi79 min SSW 8 G 8.9 80°F 1018.1 hPa (+0.6)73°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort, Marine Corps Air Station, SC14 mi83 minSSW 510.00 miMostly Cloudy84°F70°F63%1017.3 hPa
Walterboro Lowcountry Regional Airport, SC17 mi44 minN 010.00 miFair86°F71°F62%1017.6 hPa
Beaufort County Airport, SC19 mi24 minSSW 510.00 miFair84°F68°F58%1017.3 hPa

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Last 24hrNW5Calm--W6NE4CalmSE4S4CalmS3CalmCalmSW3CalmCalmSW4SW3CalmCalmSW4SW5SW6SW5SW6
1 day agoN10N10NE11N8N7N6NE3CalmCalmCalmCalmCalmSW3CalmCalmW3CalmCalmCalmCalmNW5NW6W4NW6
2 days agoN12N11N11N13N11N12N8N5NW3CalmCalmE3CalmNW3NW3NW3CalmN3N6N6N7N8N6N8

Tide / Current Tables for Bluff Plantation, Combahee River, South Carolina
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Bluff Plantation
Click for Map
Wed -- 12:37 AM EDT     4.20 feet High Tide
Wed -- 01:30 AM EDT     New Moon
Wed -- 06:40 AM EDT     -0.15 feet Low Tide
Wed -- 07:10 AM EDT     Sunrise
Wed -- 07:26 AM EDT     Moonrise
Wed -- 01:06 PM EDT     4.05 feet High Tide
Wed -- 07:02 PM EDT     -0.29 feet Low Tide
Wed -- 07:21 PM EDT     Sunset
Wed -- 07:56 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.14.23.72.91.90.80-0.10.31.22.23.13.843.83.22.21.10.1-0.3-00.81.82.9

Tide / Current Tables for Lobeco, Whale Branch, South Carolina
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Lobeco
Click for Map
Wed -- 01:30 AM EDT     New Moon
Wed -- 04:17 AM EDT     -0.16 feet Low Tide
Wed -- 07:10 AM EDT     Sunrise
Wed -- 07:26 AM EDT     Moonrise
Wed -- 10:31 AM EDT     9.23 feet High Tide
Wed -- 04:40 PM EDT     -0.25 feet Low Tide
Wed -- 07:21 PM EDT     Sunset
Wed -- 07:56 PM EDT     Moonset
Wed -- 10:44 PM EDT     9.40 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.65.53.21-0.10.21.63.86.189.19.18.16.44.11.70.1-0.213.15.67.79.19.4

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 (12,3,4,5)
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Ground Weather Radar Station Charleston, SC
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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.