Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Richmond Hill, GA

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 6:20AMSunset 8:23PM Thursday May 24, 2018 7:32 PM EDT (23:32 UTC) Moonrise 2:47PMMoonset 2:34AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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
    EDIT      (on/off)   Help
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 601 Pm Edt Thu May 24 2018
Tonight..SE winds 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Fri..SE winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of tstms. A slight chance of showers in the morning, then a chance of showers in the afternoon.
Fri night..S winds 10 to 15 kt. Seas 3 ft. A chance of showers with a slight chance of tstms.
Sat..S winds 10 to 15 kt. Seas 3 ft. A chance of showers with a slight chance of tstms.
Sat night..SE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers with a slight chance of tstms.
Sun..SE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft. Showers likely with a slight chance of tstms.
Sun night..S winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight. Showers likely with a slight chance of tstms.
Mon..S winds 15 kt. Seas 4 to 5 ft. Showers likely with a chance of tstms.
Mon night..S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Tue..S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers with a slight chance of tstms.
Tue night..S 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 601 Pm Edt Thu May 24 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A trough of low pressure will persist inland for the next few days. Developing low pressure over the gulf of mexico will slowly move north toward the central gulf coast this weekend, possibly lingering through early next week. This pattern will maintain higher than normal rain chances across the area.

7 Day Forecast for Marine Location Near Richmond Hill, GA
   Hourly   EDIT   Help
location: 31.95, -81.34     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 242317
afdchs
area forecast discussion
national weather service charleston sc
717 pm edt Thu may 24 2018

Synopsis
A trough of low pressure will persist inland for the next few
days. Developing low pressure over the gulf of mexico will
slowly move north toward the central gulf coast this weekend,
possibly lingering through early next week. This pattern will
maintain higher than normal rain chances across the area.

Near term until 6 am Friday morning
A mid level perturbation over east-central georgia will
retrograde a little westward tonight, while at the surface a
back-door cold washes out not far to our n-ne. Much of the
forecast district is worked over from earlier moderate to heavy
rains, but some of these type of rains will persist through at
least the mid evening, especially across georgia in closer
proximity to the mid level feature, and where we find the best
moisture convergence and various boundary interactions. Some of
the convection will draw back toward savannah, but the bulk of
it should stay to the west. For areas such as charleston and
beaufort, the lingering light leftover rains will fade this
early evening. The pwat which is around 160-170% of normal for
late may, and limited storm motion will equate to minor to
moderate flooding in a few locations across interior georgia,
where rainfall rates of 1 to perhaps 2 inches an hour will still
be common. We did lower hourly temps several degrees early on
in many locations to account for all the rain, but left a
persistence forecast in regards to min temps toward morning. The
sref is hitting the potential for low stratus and fog a little
better than last night around 09-12z, and will consider adding
to the forecast in future updates if the widespread convective
clouds dissipate enough.

Previous discussion...

numerous showers and tstms have developed across land areas
this afternoon driven by a number of forcing mechanisms: sea
breeze, backdoor cold front to the north, and weak surface
trough over central ga. The in-situ airmass is very moist; spc
mesoanalysis shows a large area of 2.0" pwats. This, combined
with 1000-1500 j kg mlcape, is allowing for torrential rainfall
with the slow- moving convection. Earlier this afternoon a
station in west ashley, sc picked up 2.7" of rain in exactly one
hour. Fortunately we are seeing a slow westward shift in the
convection, limiting flooding potential. High-res models
continue to show the best coverage of convection shifting inland
through early this evening, gradually waning by 9-11 pm.

Overnight we should see minimal activity given the lack of
instability, though a few showers or tstms may pop up over the
coastal waters.

Lows will drop into the upper 60s by daybreak Friday. Patchy fog
is possible in areas where rainfall occurred and soil is moist.

Short term 6 am Friday morning through Sunday
The weather will be driven mainly by a trough of low pressure inland
and high pressure in the atlantic. The high will start to move away
from our region on Friday, allowing the trough to become more
dominant. However, focus will remain on low pressure developing in
the gulf of mexico. The low is expected to strengthen as it moves
northward towards the central gulf coast. Either way, a tropical air
mass will remain in place with above normal rain chances, mostly
each afternoon and evening. Pwats will approach 2" Friday and
Saturday, then exceed 2" on Sunday as the aforementioned low gets
closer to the region, ushering deep tropical moisture in southerly
flow. Pops Friday and Saturday are generally chance to likely during
the day and slight chance at night. Pops may need to be increased
further on Sunday, but we're being conservative until the track of
the low becomes better defined. QPF will be typical of summertime
convection, highest where thunderstorms persist the longest.

Instability isn't overly impressive, especially as we head into
Sunday. As a result, thunder was capped at slight chance. The
argument could be made for chance thunder along the sea breeze, but
we opted to not get fancy with these details at this point.

Regardless, the flash flood and severe risk is low. Daytime
temperatures will be near normal. Nighttime temperatures will be
mild due to cloud cover and the moist air mass.

Long term Sunday night through Thursday
Not much pattern change through the period with deep low pressure
persisting to the west and atlantic high pressure to the east. This
will maintain a tropical air mass across the area and lead to higher
than normal rain chances, with not much more preference for higher
rain chances during the day than at night. Temperatures should
stay near to above normal.

Aviation 00z Friday through Tuesday
Lingering light rains falling from the tops of the earlier
convection will gradually fade at ksav early tonight, while kchs
will stay rainfree. Late tonight into Friday morning there are
indications that both sites will experience MVFR or even ifr
conditions from low stratus and fog due to the saturated grounds.

As of this time the best chances for convection appears to be
inland from the terminals Friday afternoon, so nothing more then
vcsh withVFR ceilings is forecast with the 00z TAF set.

Extended aviation outlook: brief flight restrictions are possible
due to showers thunderstorms, especially each afternoon.

Marine
Relatively weak onshore winds will persist through tonight as a
cold front dissipates to the north. Seas 2-3 ft.

The coastal waters will remain between a trough inland and
atlantic high pressure Friday. This weekend the trough will
persist inland, but a low pressure system is expected to develop
over the gulf of mexico and track north toward the gulf coast.

Depending on the strength and track of the low will determine
how much of a wind sea increase there will be locally. Marine
headlines may be needed early next week.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Ms
long term...

aviation...

marine...



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 24 mi45 min SE 2.9 G 4.1 76°F 79°F1018.9 hPa
SAXG1 - Sapelo Island Reserve, GA 37 mi93 min SE 7 78°F 1017 hPa (-1.0)74°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 45 mi43 min SE 9.7 G 12 77°F 77°F2 ft1017.7 hPa (+0.4)77°F

Wind History for Fort Pulaski, GA
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
S4
G8
S4
G8
S5
S4
S4
S5
G8
SW6
G10
SW5
SW6
G10
SW11
SW5
SW4
SW4
SW4
SW4
W3
--
SE2
S5
G8
S9
G14
SE8
G12
SE8
G11
SE6
G9
SE5
G8
1 day
ago
S10
G13
S5
G9
S6
G9
S6
G9
S4
G7
S4
G8
S4
G11
S7
G13
SW7
G12
SW9
G12
SW7
G10
SW6
G10
SW6
G10
SW7
G10
SW10
G13
W8
G14
SW6
G9
S7
G11
S7
G12
S6
G11
S8
G13
S9
G14
S8
G14
S7
G11
2 days
ago
SE5
G8
SE4
G7
SE4
SE4
SE4
SE4
SE5
G8
SE4
SE5
SE4
S3
SE4
SE4
S7
G15
SW7
SW5
S11
G15
SE8
G11
S10
G15
S6
G10
S6
G9
S6
G9
S6
G11
S8
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA11 mi37 minN 010.00 miMostly Cloudy76°F72°F87%1018.2 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA13 mi37 minN 010.00 miRain73°F69°F89%1018.2 hPa
Savannah-Hilton Head International Airport, GA15 mi40 minN 09.00 miLight Rain76°F73°F94%1019 hPa

Wind History from SVN (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrS7S6S4S5S4CalmCalmS3S3S3S3S3SW3SW3W4W3S5S5S6SE12SW4SE8SE6Calm
1 day agoSE8S4S4S4S3S4S3S5S6S5S5S5S5SW8S7SW6SW5S6SE9SE10S10SE12S11
G16
S9
2 days ago--------E3E4SE4SE3SE3SE3SE3CalmSE9
G19
SE5SE4S5SE6S5CalmS5SE9S12
G17
SE9SE9

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Highway bridge
Click for Map
Thu -- 03:04 AM EDT     0.04 feet Low Tide
Thu -- 03:33 AM EDT     Moonset
Thu -- 06:22 AM EDT     Sunrise
Thu -- 07:50 AM EDT     1.08 feet High Tide
Thu -- 03:30 PM EDT     -0.01 feet Low Tide
Thu -- 03:46 PM EDT     Moonrise
Thu -- 08:21 PM EDT     Sunset
Thu -- 08:34 PM EDT     1.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.30.100.10.40.811.110.90.70.50.30.1000.20.60.91.11.110.9

Tide / Current Tables for Fort McAllister, Ogeechee River, Georgia
   EDIT      (on/off)   Help   One Week of Data
Fort McAllister
Click for Map
Thu -- 03:33 AM EDT     Moonset
Thu -- 05:20 AM EDT     7.13 feet High Tide
Thu -- 06:22 AM EDT     Sunrise
Thu -- 12:20 PM EDT     -0.10 feet Low Tide
Thu -- 03:46 PM EDT     Moonrise
Thu -- 06:05 PM EDT     7.37 feet High Tide
Thu -- 08:20 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.92.54.56.27.176.253.520.7-00.21.43.35.36.87.47.16.24.93.31.7

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of Southeast    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 (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Charleston, SC
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.