Friday, March24, 2017 L-36.com


Marine Weather and Tides
Port Wentworth, GA

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 7:20AMSunset 7:40PM Friday March 24, 2017 9:57 PM EDT (01:57 UTC) Moonrise 4:07AMMoonset 3:18PM Illumination 7% 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- 633 Pm Edt Fri Mar 24 2017
Tonight..SE winds 5 to 10 kt. Seas 3 to 4 ft.
Sat..SE winds 5 to 10 kt. Seas 3 to 4 ft.
Sat night..SE winds 10 kt. Seas 3 to 4 ft.
Sun..SE winds 5 to 10 kt. Seas 3 to 4 ft.
Sun night..S winds 5 to 10 kt. Seas 3 to 4 ft.
Mon..S winds 5 to 10 kt. Seas 3 to 4 ft.
Mon night..S winds 5 to 10 kt. Seas 3 to 4 ft... Building to 4 to 5 ft after midnight. A slight chance of showers and tstms.
Tue..SW winds 10 kt. Seas 4 to 5 ft. A slight chance of showers and tstms.
Tue night..SW winds 10 kt. Seas 3 to 4 ft.
Wed..SW winds 5 to 10 kt. Seas 3 to 4 ft.
Wed night..S 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 633 Pm Edt Fri Mar 24 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail this weekend. A weak cold front should stall over the area during the middle of next week, then shift back north as a warm front late in the week.

7 Day Forecast for Marine Location Near Port Wentworth, GA
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location: 32.17, -81.13     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 242310
afdchs
area forecast discussion
national weather service charleston sc
710 pm edt Fri mar 24 2017

Synopsis
High pressure will prevail this weekend. A weak cold front should
stall over the area during the middle of next week, then shift
back north as a warm front late in the week.

Near term /until 6 am Saturday morning/
At the request of the us forest service in the francis marion
nf, a dense smoke advisory has been issued through 10 am
Saturday. This is due to lingering smoke from an earlier
prescribed burn near bethera and farewell corner in the forest
of berkeley county. For the time being all roads are open, but
portions of several roads in northern berkeley county may be
closed tonight.

A deep onshore fetch and decent low level moisture beneath the
nocturnal inversion will support considerable stratocumulus from
the atlantic advecting onshore and impacting mainly the coastal
zones through the night. Also, high level cirrus will arrive
from the northwest, and the combination will result in partly co
mostly cloudy skies.

A few hi-res models do indicate a little fog west of i-95 closer
to daybreak, but with geostrophic winds at 10 kt or greater and
the high clouds, this is highly unlikely.

Sfc high pressure centered to the northeast will slide further
east over the western atlantic while a low pressure system
advances east over the central united states. Aloft, a high
amplitude ridge of high pressure will extend across the
southeast for much of the night, dominating the weather pattern
with dry/mild conditions. Soundings suggest high clouds will
develop over the area late, well ahead of the low pressure
system to the west. The pattern along with increasing high
clouds late, suggests temps will remain more mild tonight than
the previous night. In general, temps should dip into the
low/mid 50s away from the immediate coast.

Short term /6 am Saturday morning through Monday/
The region will remain along the western fringes of atlantic high
pressure through the period. Weak shortwave energy and the approach
of a weakening cold front could support scattered showers/tstms
Sunday afternoon with another round of convection possible Monday
afternoon ahead of the resultant sea breeze circulation. Pops will
be capped at 30-40% inland both days with coastal pops limited to
20%. Highs away from the beaches will warm into the mid-upper 70s
Saturday, the lower 80s Sunday with lower-mid 80s Monday. Lows will
range from the mid-upper 50s inland with lower 60s at the coast each
night.

Long term /Monday night through Friday/
A weakening cold front looks to approach the area mid week before
stalling and eventually shifting back northward as a warm front late
in the period. Some showers and thunderstorms are expected, mainly
mon night into Tuesday and again Friday as a shortwave energy moves
through the area. No significant rainfall and/or severe weather
anticipated at this time however.

Aviation /00z Saturday through Wednesday/
Vfr, although there is a risk for a period of MVFR ceilings late
tonight and Saturday morning at kchs and ksav as maritime
moisture becomes trapped beneath a sharp inversion.

Extended aviation outlook: there are no impact-level concerns
with a >30% probability of occurrence.

Marine
Tonight: a weak coastal trough will remain well off the
southeast coast this evening while high pressure centered to the
northeast shifts further offshore. The pattern will result in a
steady gradient over much of the coastal waters overnight with
winds/seas that remain below small craft advisory levels. In
general, southeast winds will peak between 10-15 kts early while
seas are no higher than 3-4 ft nearshore and 4-5 ft offshore
early tonight.

Saturday through Wednesday: there are no concerns with atlantic
high pressure generally in control until a weakening cold front
moves into the area Wednesday. Seas look to be near 6 feet along the
eastern portions of the georgia offshore leg which will likely
necessitate a small craft advisory for that zone. Winds will remain
less than 20 kt through the period.

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

Sc... Dense smoke advisory until 10 am edt Saturday for scz045.

Marine... None.

Near term...

short term... St
long term... Rjb
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 15 mi40 min E 6 G 7 62°F 61°F1028.5 hPa
41033 39 mi50 min E 5.8 G 7.8 62°F 60°F1028.2 hPa
ACXS1 - ACE Basin Reserve, SC 45 mi73 min Calm 62°F 1028 hPa56°F
SAXG1 - Sapelo Island Reserve, GA 53 mi58 min ENE 2.9 62°F 1028 hPa (+0.0)58°F

Wind History for Fort Pulaski, GA
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Last
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NE19
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E14
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G31
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NE17
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SW5
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G8
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NW24
G31
NW11
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G7
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G15
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G18
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G19

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Savannah, Savannah International Airport, GA4 mi65 minE 610.00 miOvercast65°F54°F68%1028.1 hPa
Hunter U. S. Army Airfield, GA10 mi60 minE 610.00 miOvercast65°F58°F79%1027.4 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi63 minN 010.00 miMostly Cloudy64°F57°F78%1028.8 hPa

Wind History from SAV (wind in knots)
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Last 24hrE8NE6--NE5N5NE6N4N6NE4NE4N4N4NE4E10E12E13
G20
SE14
G18
SE13
G18
S13SE12E15SE6E6E6
1 day agoE8E7NE9NE9NE6E10E15
G20
E11E10E12NE11
G17
NE9NE11NE14
G22
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G25
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2 days agoSW8SW9SW12N18
G34
W5SW7W3SW6CalmCalmN4W5NW9NW7N10NW7NE7NE9NE8E14SE15E13E14E9

Tide / Current Tables for Little Back River, Hwy. 17, Back River., Savannah River, South Carolina
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Little Back River
Click for Map
Fri -- 01:08 AM EDT     0.75 feet Low Tide
Fri -- 05:07 AM EDT     Moonrise
Fri -- 07:11 AM EDT     7.45 feet High Tide
Fri -- 07:22 AM EDT     Sunrise
Fri -- 01:52 PM EDT     0.46 feet Low Tide
Fri -- 04:17 PM EDT     Moonset
Fri -- 07:28 PM EDT     7.39 feet High Tide
Fri -- 07:39 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.81.12.44.25.877.47.36.55.13.520.90.51.22.94.96.57.37.36.65.33.6

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Fri -- 12:36 AM EDT     0.00 knots Slack
Fri -- 03:18 AM EDT     1.98 knots Max Flood
Fri -- 05:06 AM EDT     Moonrise
Fri -- 07:04 AM EDT     -0.00 knots Slack
Fri -- 07:21 AM EDT     Sunrise
Fri -- 10:21 AM EDT     -1.92 knots Max Ebb
Fri -- 01:18 PM EDT     0.00 knots Slack
Fri -- 03:47 PM EDT     2.00 knots Max Flood
Fri -- 04:16 PM EDT     Moonset
Fri -- 07:17 PM EDT     -0.00 knots Slack
Fri -- 07:37 PM EDT     Sunset
Fri -- 10:02 PM EDT     -1.85 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.60.41.421.91.40.90.1-1-1.7-1.9-1.9-1.4-0.40.91.821.610.3-0.7-1.6-1.8-1.7

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 (21,6,7,8)
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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.