Monday, March27, 2017 L-36.com


Marine Weather and Tides
Jacksonboro, SC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:11AMSunset 7:38PM Monday March 27, 2017 8:30 PM EDT (00:30 UTC) Moonrise 6:06AMMoonset 6:22PM Illumination 0% Phase: New Moon; Moon at 0 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- 741 Pm Edt Mon Mar 27 2017
Tonight..S winds 5 to 10 kt. Seas 3 to 4 ft.
Tue..SW winds 5 to 10 kt...increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft.
Tue night..SW winds 10 to 15 kt. Seas 3 to 4 ft.
Wed..W winds 5 to 10 kt...becoming S in the afternoon. Seas 3 to 4 ft.
Wed night..SE winds 10 kt...becoming E after midnight. Seas 2 to 3 ft.
Thu..E winds 10 to 15 kt. Seas 2 to 3 ft.
Thu night..SE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft... Building to 4 to 5 ft after midnight. A chance of showers and tstms.
Fri..S winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms.
Fri night..SW winds 10 to 15 kt. Seas 4 to 6 ft. A slight chance of showers and tstms.
Sat..W winds 10 to 15 kt. Seas 2 to 3 ft.
Sat night..W winds 5 to 10 kt. Seas 2 to 3 ft. Mariners are reminded that winds and seas can be higher in and near tstms.
AMZ300 741 Pm Edt Mon Mar 27 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will weaken through Tuesday. A weak cold front will stall over or near the area on Wednesday. Another cold front will move through Friday night into Saturday followed by drier high pressure Sunday.

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 272354
afdchs
area forecast discussion
national weather service charleston sc
754 pm edt Mon mar 27 2017

Synopsis
Atlantic high pressure will weaken through Tuesday. A weak cold
front will stall over or near the area on Wednesday. Another
cold front will move through Friday night into Saturday followed
by drier high pressure Sunday.

Near term /until 6 am Tuesday morning/
Early this evening: showers and thunderstorms have come to an
end with the loss of diurnal heating. A few showers continue to
develop back to the west and southwest, ahead of an approaching
mid-level shortwave. This feature is currently making its way
across alabama and into georgia where it is helping to drive
much deeper and more significant convection. This will be the
main forecast issue overnight, tracking this shortwave as it
progresses eastward and whether it is able to kick off isolated
noctural convection across the forecast area. Models do show the
shortwave weakening a bit, but virtually ever available model
shows some degree of convection moving along a region near where
the lowcountry and midlands meet. Coverage should be limited
thanks to the lack of surface based instability, but there
should be enough elevated instability to generate at least
isolated showers. Have kept thunder in the forecast as mid-level
lapse rates steepen. Potential for fog appears to be on the low
end thanks to enough flow in the low levels just off the
surface. Another mild night with lows only falling to around 60
for most areas.

Short term /6 am Tuesday morning through Thursday/
The upper shortwave will be moving off the sc coast by early
Tuesday afternoon, taking with it the best chance for showers
and tstms. We maintained a slight chance for precip across far
northern areas where the better forcing will exist.

The upper ridge will expand to the east on Wednesday while a
weak back door cold front drops in from the north. Despite a
weak northerly surface flow developing, downslope component
aloft and large-scale warm air advection should result in warm
temperatures in the mid/upper 80s.

The upper ridge will hang on into Thursday though some
shortwave energy lifting out of the central gulf will yield
increasing isentropic ascent across the stalled front. Scattered
showers will be possible over the central and southern areas,
with thunderstorms possible farther to the south where a bit
more surface-based instability develops.

Long term /Thursday night through Monday/
The stalled front across ga is expected to shift north as a
warm front Thursday night into Friday followed by a cold frontal
passage Saturday. Drier high pressure looks to then return
later in the weekend before more unsettled weather possibly
moves back into the area for next Monday. Showers and
thunderstorms will be possible through Friday night, although
the best chances and heaviest amounts are likely through Friday
morning. Temperatures should remain above normal through the
period.

Aviation /00z Tuesday through Saturday/
Vfr conditions are expected to prevail through 00z Wednesday. We
will likely see isolated showers develop after midnight tonight
and approach kchs. Chances of direct impacts are too low to
include in the forecast. Fog/stratus concerns are low tonight.

Then for Tuesday, another round of mainly isolated showers and
thunderstorms. No direct impacts expected at the terminals, but
if there is a chance it would be highest at kchs.

Extended aviation outlook: low ceilings possible Wed night
through Thu night as a front stalls over the area. Brief flight
restrictions possible in showers and tstms Thu night through fri
night.

Marine
Tonight: southerly flow regime will persist overnight the area
will remain situated between high pressure well offshore and a
cold front to the west. Speeds will remain 10 kt or less with
seas 2-4 ft nearshore waters and 4-5 ft georgia offshore waters.

Tuesday through Saturday: strengthening east to southeast flow
Thursday into Friday will result in increasing seas, with 6
footers reaching the gulf stream by Thursday night. At least 6
ft seas expected over all coastal marine zones on Friday,
gradually subsiding Friday night into Saturday as the surface
high shifts east. Small craft advisories appear likely for much
of the area during this time.

Rip currents: 3 ft 10 sec swell, increasing onshore winds and
astronomical influences will yield a high risk for rip currents
along the sc coast and moderate for ga on Tuesday. The swell
will be decreasing on Wednesday though the risk will likely
remain elevated at least until then.

Tides/coastal flooding
High tides could reach advisory levels, mainly late
Wednesday/Thursday, due to strengthening onshore winds and
swells impacting the coast. This could cause shallow saltwater
inundation in typically vulnerable coastal areas, especially in
sc.

Chs watches/warnings/advisories
Ga... None.

Sc... High risk for rip currents from Tuesday morning through
Tuesday evening for scz048>051.

Marine... None.

Near term... Bsh
short term... Jrl
long term... Rjb
aviation... Bsh/jrl
marine... St/jrl
tides/coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 5 mi105 min SSE 2.9 70°F 1017 hPa61°F
41033 24 mi82 min S 7.8 G 9.7 64°F 64°F1016.2 hPa
FBIS1 - Folly Island, SC 31 mi30 min S 8 G 8 66°F 1017.4 hPa (-0.8)63°F
CHTS1 31 mi42 min S 6 G 8 68°F 63°F1017 hPa
41029 - Capers Nearshore (CAP 2) 46 mi82 min S 5.8 G 7.8 66°F 1016.9 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 47 mi42 min SSE 6 G 9.9 67°F 64°F1016.6 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort, Marine Corps Air Station, SC17 mi34 minSSE 510.00 miPartly Cloudy69°F62°F78%1016.3 hPa
Beaufort County Airport, SC17 mi35 minS 510.00 miFair68°F59°F73%1016.3 hPa
Walterboro Lowcountry Regional Airport, SC22 mi35 minSSE 710.00 miFair68°F59°F73%1016.6 hPa

Wind History from ARW (wind in knots)
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Last 24hrSE3S3CalmCalmCalmSE3CalmCalmCalmCalmCalmCalmS5SW6S5S8S7SW8S11
G14
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1 day agoE4SE3E4E4CalmSE3S3CalmCalmCalmCalmCalmCalmS5S9
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2 days agoE3E5SE4SE3SE3CalmCalmCalmCalmCalmCalmCalmCalmE5SE3SE5SE8
G15
SE9S8S6SE6CalmSE4E3

Tide / Current Tables for Airy Hall Plantation, Ashepoo River, South Carolina
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Airy Hall Plantation
Click for Map
Mon -- 04:17 AM EDT     -0.61 feet Low Tide
Mon -- 07:06 AM EDT     Moonrise
Mon -- 07:16 AM EDT     Sunrise
Mon -- 10:18 AM EDT     4.61 feet High Tide
Mon -- 04:43 PM EDT     -0.85 feet Low Tide
Mon -- 07:22 PM EDT     Moonset
Mon -- 07:38 PM EDT     Sunset
Mon -- 10:33 PM EDT     4.82 feet High Tide
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.32.21-0-0.6-0.40.51.83.14.14.64.53.82.81.50.3-0.6-0.8-0.11.22.744.74.8

Tide / Current Tables for Penny Creek, south of, Edisto River, South Edisto River, South Carolina
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Penny Creek
Click for Map
Mon -- 05:00 AM EDT     -0.74 feet Low Tide
Mon -- 07:06 AM EDT     Moonrise
Mon -- 07:15 AM EDT     Sunrise
Mon -- 10:27 AM EDT     5.77 feet High Tide
Mon -- 05:26 PM EDT     -1.05 feet Low Tide
Mon -- 07:22 PM EDT     Moonset
Mon -- 07:38 PM EDT     Sunset
Mon -- 10:42 PM EDT     6.02 feet High Tide
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.53.320.7-0.4-0.7-0.11.43.34.85.75.75.142.61.2-0.2-1-0.80.52.64.65.86

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 (20,4,5,8)
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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.