Friday, December15, 2017 L-36.com


Marine Weather and Tides
Jacksonboro, 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 7:13AMSunset 5:16PM Friday December 15, 2017 9:10 AM EST (14:10 UTC) Moonrise 4:45AMMoonset 3:51PM Illumination 8% Phase: Waning Crescent; Moon at 27 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- 609 Am Est Fri Dec 15 2017
Today..W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 to 2 ft.
Tonight..NW winds 15 to 20 kt. Seas 2 to 3 ft.
Sat..N winds 10 to 15 kt, diminishing to 5 kt in the afternoon. Seas 1 to 2 ft, subsiding to 1 foot.
Sat night..N winds 5 kt. Seas 1 foot or less.
Sun..E winds 5 kt. Seas 1 foot or less.
Sun night..SE winds 5 kt, becoming sw after midnight. Seas 1 to 2 ft. A chance of showers after midnight.
Mon..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers.
Mon night..SW winds 10 to 15 kt. Seas 2 ft. A chance of showers.
Tue..SW winds 10 kt. Seas 2 ft. A chance of showers.
Tue night..W winds 10 to 15 kt. Seas 2 ft. A chance of showers.
AMZ300 609 Am Est Fri Dec 15 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A dry cold front will move through today, followed by high pressure this weekend. Another front will bring unsettled weather across the region Monday into Tuesday, then shift offshore during the middle of next week.

7 Day Forecast for Marine Location Near Jacksonboro, SC
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location: 32.63, -80.47     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 151111
afdchs
area forecast discussion
national weather service charleston sc
611 am est Fri dec 15 2017

Synopsis
A dry cold front will move through today, followed by high
pressure this weekend. Another front will bring unsettled
weather across the region Monday into Tuesday, then shift
offshore during the middle of next week.

Near term until 6 pm this evening
Goes-16 IR imagery shows a break in the cirrus deck has opened
up across portions of the region. Do expect this to fill in
later this morning, but adjusted near term sky grids to
initialize with current satellite trends. The remainder of the
forecast is on track.

A cold front will approach from the west this morning and push
offshore late this afternoon as potent shortwave energy ejects
out of the ohio valley. Warm and dry conditions will occur
ahead of the front with h8 temperatures surging to 7 to 9c.

Although extensive high clouds associated with a powerful
subtropical jet will be in place, expect highs to peak into the
lower 60s inland with mid-upper 60s at the coast.

High resolution models are similar in their depiction of a band
of light rain developing this afternoon in the alma to richmond
hill corridor. Forecast soundings in this area show a very dry
sub-cloud layer will persist through FROPA so any precipitation
that falls from the 15 kft cirrostratus cirrocumulus deck will
fall as virga. In fact, diligent cloud watchers could be
treated to a few instances of fallstreak holes. While there
will likely be some returns on area radars, no measurable
rainfall is expected. Zero percent pops will be maintained.

Short term 6 pm this evening through Monday
Tonight: high pressure will build in from the west as upper
ridging begins to take hold across the southeast states ahead of
an upper low kicking out of northern mexico. Thick cirrus
associated with the subtropical jet will slowly translate to the
southeast with skies beginning to clear across far inland areas
after midnight. Clouds are not expected to clear the georgia
coast until just before daybreak Saturday. Lows will range from
the lower-mid 30s inland to the lower-mid 40s at the beaches.

Saturday: the mid upper levels will consist of nearly zonal flow
during the day. Overnight, high pressure generally located over the
bahamas will strengthen slightly and shift westward, allowing weak
ridging to develop over the southeast. The ridge will start to
amplify late due to a disturbance moving across the central plains.

At the surface, high pressure centered over al in the morning will
move eastward during the day, becoming located over the outer banks
in the evening and overnight. Plenty of subsidence and a very dry
air mass (pwats ~0.25" during the day) will lead to a sunny day.

High and low temperatures will be within a few degrees of normal.

Sunday: the mid upper levels will consist of high pressure generally
located over the bahamas, generating weak ridging and west southwest
flow over the southeast. At the surface, high pressure over the
outer banks in the morning will move further offshore during the
day. A front will approach from our west and northwest, especially
overnight. The air mass quickly moistens ahead of this front. Pwats
are forecasted to rise to ~1.5" late at night, which is 2 standard
deviations above normal per naefs. Mid upper level lift isn't overly
impressive since the best dynamics are to our west. But the
proximity of the front and the moisture will allow showers to
overspread the area from the west to east overnight. The highest
pops are west of i-95. QPF here should be a few hundredths
overnight. Despite increasing clouds, high temperatures should be a
few degrees above normal.

Monday: the mid upper levels will consist of weakening high pressure
over the bahamas, generating weak ridging and west southwest flow
over the southeast. At the surface, a front will stretch from the
lower ms valley into northern ga and upstate sc in the morning,
trending eastward during the day. A saturated air mass encompassed
by ~1.5" pwats, which is 2 standard deviations above normal per
naefs, will prevail. Models continue to show the best mid upper
level lift just to our west and northwest. But even with this
factored in, showers are still expected across a good chunk of the
area, especially far inland. The highest pops should remain west of
i-95. QPF here should approach 0.25" during the day, while areas
east can expect up to 0.1". High temperatures should be a few
degrees above normal in our sc counties and well above normal in our
ga counties.

Long term Monday night through Thursday
The front will slowly move across the southeast Monday night into
Tuesday, bringing our area unsettled weather. By Wednesday there is
a split in the 00z models. Some of them move the front offshore and
have dry high pressure building in from the north. The rest keep the
area damp due to remnants of the front remaining nearby along with
low pressure forming offshore. Since the majority of the models have
the drier forecast, that's what we trended towards on Wednesday. By
Thursday moisture starts moving in from the south, leading to an
increased threat of showers.

Aviation 11z Friday through Tuesday
Vfr.

Extended aviation outlook: flight restrictions are possible
Monday and Tuesday as a front moves across the southeast.

Marine
Today: west to southwest winds will dominate the local marine
area today ahead of an approaching cold front. Speeds will
generally average around 10 kt this morning, but will begin to
pick up late in the afternoon as the cold front pushes offshore
and cold air advection initiates. Seas will average 1-2 ft then
begin to build late.

Tonight: modest post-frontal cold air advection will support a
decent surge across the waters tonight as high pressure builds
in from the west. Speeds look to peak 15-20 kt for most legs
with seas building 2-3 ft nearshore and 4-5 ft offshore. Right
now it appears that both winds and seas will remain below small
craft advisory thresholds.

Saturday through Tuesday: high pressure will prevail this weekend. A
front will bring unsettled weather across the region Monday into
Tuesday. However, conditions probably won't be bad enough to warrant
any marine headlines.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 5 mi146 min Calm 43°F 1016 hPa41°F
41033 24 mi63 min SW 7.8 G 12 52°F 54°F1015.6 hPa
FBIS1 - Folly Island, SC 31 mi71 min SW 4.1 G 5.1 50°F 1016.5 hPa (+0.3)42°F
CHTS1 31 mi41 min SW 5.1 G 6 53°F 53°F1015.8 hPa
41029 - Capers Nearshore (CAP 2) 46 mi63 min WSW 7.8 G 12 50°F 54°F1015.7 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 47 mi41 min WSW 4.1 G 5.1 51°F 53°F1016.9 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort, Marine Corps Air Station, SC17 mi75 minSW 710.00 miPartly Cloudy45°F41°F86%1016.5 hPa
Beaufort County Airport, SC17 mi16 minSSW 510.00 miFair50°F42°F76%1016.6 hPa
Walterboro Lowcountry Regional Airport, SC22 mi16 minN 010.00 miFair45°F41°F87%1016.6 hPa

Wind History from ARW (wind in knots)
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Last 24hrW12
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W11W6SW5SW5SW6SW3CalmCalmS3CalmS3S5S3SW3SW4SW3SW5SW4W4CalmSW3SW3S3
1 day agoNW9
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Tide / Current Tables for Airy Hall Plantation, Ashepoo River, South Carolina
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Airy Hall Plantation
Click for Map
Fri -- 01:40 AM EST     0.14 feet Low Tide
Fri -- 04:45 AM EST     Moonrise
Fri -- 07:16 AM EST     Sunrise
Fri -- 07:53 AM EST     4.44 feet High Tide
Fri -- 02:20 PM EST     0.27 feet Low Tide
Fri -- 03:50 PM EST     Moonset
Fri -- 05:17 PM EST     Sunset
Fri -- 08:00 PM EST     3.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.30.20.61.52.63.64.34.44.23.62.71.70.80.30.41.1233.743.83.22.4

Tide / Current Tables for Penny Creek, south of, Edisto River, South Edisto River, South Carolina
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Penny Creek
Click for Map
Fri -- 02:23 AM EST     0.17 feet Low Tide
Fri -- 04:45 AM EST     Moonrise
Fri -- 07:16 AM EST     Sunrise
Fri -- 08:02 AM EST     5.55 feet High Tide
Fri -- 03:03 PM EST     0.34 feet Low Tide
Fri -- 03:50 PM EST     Moonset
Fri -- 05:17 PM EST     Sunset
Fri -- 08:09 PM EST     4.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.70.20.31.22.64.15.25.55.34.73.82.71.60.70.30.81.93.34.554.84.23.4

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 (9,2,3,4)
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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.