Sunday, July23, 2017 L-36.com


Marine Weather and Tides
Riceboro, GA

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 6:35AMSunset 8:30PM Sunday July 23, 2017 4:53 AM EDT (08:53 UTC) Moonrise 5:47AMMoonset 7:47PM 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm...including Grays Reef National Marine Sanctuary- 345 Am Edt Sun Jul 23 2017
Today..SW winds 10 to 15 kt, becoming S 15 to 20 kt late. Seas 2 to 3 ft. A slight chance of showers and tstms this afternoon.
Tonight..S winds 15 to 20 kt, becoming sw 10 to 15 kt after midnight. Seas 3 to 4 ft. A slight chance of showers and tstms.
Mon..SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Mon night..SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of showers and tstms.
Tue..SW winds 10 to 15 kt. Seas 2 ft. A chance of tstms. A chance of showers.
Tue night..S winds 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers and tstms.
Wed..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Wed night..S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Thu..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Thu night..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 345 Am Edt Sun Jul 23 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will extend west into the southeast coast while a surface trough remains inland. A weak cold front will approach the area during the middle of the week before low pressure lingers into late week. Another cold front could approach the area late weekend.

7 Day Forecast for Marine Location Near Riceboro, GA
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location: 31.54, -81.26     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 230847
afdchs
area forecast discussion
national weather service charleston sc
447 am edt Sun jul 23 2017

Synopsis
Atlantic high pressure will extend west into the southeast
coast while a surface trough remains inland. A weak cold front
will approach the area during the middle of the week before low
pressure lingers into late week. Another cold front could
approach the area late weekend.

Near term through tonight
Pre-dawn: low stratus in southeast ga was advecting northward
early this morning and we increased cloud cover along coastal
ga prior to daybreak to cover this trend. The low level wind
fields should be turning a bit more to the west with the land
breeze, thus it is uncertain how far north these clouds
eventually reach. Otherwise, some areas of stratocu will
develop and mostly clear to partly cloudy skies can be expected,
temps most areas hovering near the mid 70s.

Today: the forecast area will reside in a rather nebulous mid
level regime with a weak upper low offshore along 30n with a
trailing weakness along the northern gulf region. Moisture is
forecast to gradually increase in the mid to upper levels while
pwats build over SE ga and eventually across the sc midlands
where a lee-side surface trough is located. The NAM along with
it's variants, appear to have initialized too moist and depiction
of convection developing around daybreak seems unlikely at this
point. Given the forecast 850 mb theta-e convergence anticipated
along and south of the savannah river this afternoon, we have
forecast low-end chance pops along and west of i-95 in this
region. Chances are quite high that the sc coastal corridor
northeast of beaufort will remain dry until perhaps late day as
the 0-3km layer appears rather dry and not too unstable. Where
tstms do develop this afternoon, expect very weak storm motions
and isolated heavy downpours.

Another warm day is on tap with highs in the lower to mid 90s.

A tight gradient to the north of i-16 will result in some
decent southwest breezes this afternoon, most notable along
the sc beaches.

Tonight: there probably will be some lingering showers and
a few storms as moisture in the csra and midlands advects
east in the boundary layer. Coastal convergence appears
decent along the upper sc coast and cannot rule out isolated
to scattered showers and tstms brushing this area after
midnight. We maintained slight chance pops for the overnight
many areas. Lows will be in the mid 70s inland and near 80
adjacent to the atlantic ocean.

Short term Monday through Wednesday
Monday and Tuesday: a southwest flow will advect deep moisture over
the southeast united states ahead of a cold front approaching from
the north northwest mid week. Fairly unstable conditions will occur
each afternoon, even as cloud cover expands over the region. Pwats
around 2.25 inches along with MAX temps in the lower 90s support
chances of showers and thunderstorms each afternoon with slightly
higher precip coverage anticipated on Tuesday while mid-lvl energy
shifts over the southeast and a sfc trough of low pressure persists
inland. Convection will be more sparse during overnight periods, but
a few showers and or thunderstorms can not be ruled out, especially
Tuesday night. Overnight lows will remain mild under some clouds,
ranging in the mid 70s away from the immediate coast.

Wednesday: a cold front will approach from the north northwest, but
will likely stall just north of area as a mid upper lvl trough of
low pressure shift further off the northeast united states. However,
a fairly wet forecast is anticipated as weak low pressure develops
along and or south of the stalling front. Weak forcing associated
with the low as well as deep moisture characterized by pwats near
2.5 inches, support at least chances of showers and thunderstorms
over much of the area and numerous showers and or thunderstorms over
parts of southeast georgia. Given precip activity and increasing
cloud cover, overall high temps will be limited to the upper 80s for
most locations. However, we could see temps peak around 90 degrees
over southern parts of southeast georgia before precip develops.

Long term Wednesday night through Saturday
Showers and or thunderstorms could be ongoing over parts of the area
Wednesday night into Thursday along near what's left of a stationary
front and weak low pressure drifting closer to the southeast coast.

Chances of showers and thunderstorms remain in the forecast, highest
near the coast on Thursday until low pressure weakens further and or
dissipates by Thursday night. A few showers and or thunderstorms
will be possible on Friday ahead of a large mid upper lvl trough
shifting over the northeast. By Saturday, the mid upper trough will
significantly increase in amplitude, extending southward over the
mid-atlantic and southeast states during the weekend. Mid-lvl energy
developing along the southern edge of the trough should trigger
showers and thunderstorms on Saturday, some potentially more
organized than previous days given greater wind fields aloft. A cold
front could then shift into the area late in the weekend.

Temps will generally peak around normal on Thursday, but should
approach the low mid 90s on Friday before greater precip coverage
limits highs to around 90 degrees on Saturday. Overnight lows will
range in the mid 70s away from the coast.

Aviation 08z Sunday through Thursday
MainlyVFR at kchs through 06z Monday. At ksav, we are becoming
more concerned for ifr CIGS advecting in from the south prior
to daybreak. Any low stratus should dissipate after mid morning
as the land mass warms. There is at least some chance that
shra tsra could impact kchs and or ksav today, with a risk of
temporary flight restrictions. At this point, still enough
uncertainty to negate inclusions of vcts cb, models showing
ksav may stand a better chance than kchs given it's vicinity to
deeper moisture.

Extended aviation outlook: afternoon showers thunderstorms could
provide brief flight restrictions each day. However, greatest
chances of flight restrictions should occur Wednesday and or
Thursday as a cold front stalls just north of the area and weakens.

Otherwise,VFR conditions will prevail.

Marine
A rather impressive low level pressure gradient is expected
through tonight across the waters. The gradient was between
atlantic high pressure and an inland surface trough in the lee
of the mountains. Winds will ebb a bit prior to midday but
increase once this afternoon into tonight. Winds could approach
small craft levels late today through this evening but we have
capped winds at 15-20 kt and seas 3-5 ft.

Monday through Friday: high pressure will prevail over the waters
early this week while a trough of low pressure develops inland. A
cold front will then stall just north of the area during the middle
of the week before weak low pressure slides closer to the coast. The
waters should then remain between high pressure offshore and a
strengthening trough of low pressure inland. In general, winds seas
are expected to remain below small craft advisory levels through the
period. However, we could see southwest winds gusting around 20 kts
Monday while the pressure gradient is somewhat enhanced over coastal
waters. The gradient should then relax as low pressure gradually
shifts near the southeast coast mid week, before strengthening once
again this weekend. Seas will generally range between 2-4 ft.

Tides coastal flooding
Tides will remain elevated into early next week due to the lunar
perigee and new moon. Additional coastal flooding advisories
are likely.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Dpb
long term... Dpb
aviation... Dpb
marine... Dpb
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 9 mi54 min SSW 8 78°F 1015 hPa (-1.0)76°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 23 mi64 min SSW 16 G 18 79°F 81°F3 ft1014.4 hPa (-1.0)76°F
FPKG1 - 8670870 - Fort Pulaski, GA 39 mi54 min WSW 4.1 G 7 78°F 86°F1014.6 hPa (-0.9)

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA22 mi59 minSW 710.00 miOvercast77°F77°F100%1015.2 hPa

Wind History from BQK (wind in knots)
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Last 24hrCalmCalmCalmSW6W3W6SW6SW4SW4NW3SE6S9S12
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1 day agoCalmCalmCalmCalmS3CalmSE3NE3S5E7SE7SE8SE11
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2 days agoCalmSW3CalmCalmCalmCalmW3E3SE5SE11SE8SE6SE7N10
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Tide / Current Tables for Dog Hammock, Sapelo River, Georgia
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Dog Hammock
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Sun -- 03:05 AM EDT     -0.64 feet Low Tide
Sun -- 05:47 AM EDT     New Moon
Sun -- 06:35 AM EDT     Sunrise
Sun -- 06:47 AM EDT     Moonrise
Sun -- 09:10 AM EDT     7.80 feet High Tide
Sun -- 03:16 PM EDT     -1.03 feet Low Tide
Sun -- 08:26 PM EDT     Sunset
Sun -- 08:46 PM EDT     Moonset
Sun -- 09:33 PM EDT     9.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.52.10.2-0.6-0.11.43.55.67.17.87.56.24.42.20.2-1-0.70.93.35.97.999.18.1

Tide / Current Tables for Harris Neck, Barbour Island River, Georgia
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Harris Neck
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Sun -- 03:17 AM EDT     -0.67 feet Low Tide
Sun -- 05:47 AM EDT     New Moon
Sun -- 06:35 AM EDT     Sunrise
Sun -- 06:47 AM EDT     Moonrise
Sun -- 09:29 AM EDT     7.96 feet High Tide
Sun -- 03:29 PM EDT     -1.12 feet Low Tide
Sun -- 08:27 PM EDT     Sunset
Sun -- 08:46 PM EDT     Moonset
Sun -- 09:54 PM EDT     9.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.22.80.6-0.6-0.31.13.15.36.97.87.86.852.80.6-0.9-0.90.42.75.37.699.48.7

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (4,6,7,8)
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Ground Weather Radar Station Charleston, SC
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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.