Wednesday, December11, 2019
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Marine Weather and Tides
Riceboro, GA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:14AMSunset 5:24PM Wednesday December 11, 2019 11:20 PM EST (04:20 UTC) Moonrise 5:11PMMoonset 6:30AM Illumination 100% Phase: Full Moon; Moon at 15 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- 1000 Pm Est Wed Dec 11 2019
.gale warning in effect through Thursday morning...
Rest of tonight..NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft, building to 5 to 7 ft. A slight chance of showers late this evening.
Thu..NE winds 20 to 25 kt with gusts to 30 kt. Seas 6 to 8 ft. A chance of showers in the afternoon.
Thu night..NE winds 20 to 25 kt with gusts to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 6 to 8 ft, subsiding to 5 to 7 ft after midnight. A chance of showers.
Fri..NE winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Showers.
Fri night..SE winds 5 to 10 kt, becoming sw 10 to 15 kt after midnight. Seas 3 to 4 ft. Showers likely. A slight chance of tstms after midnight.
Sat..SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A chance of showers with a slight chance of tstms in the morning, then a slight chance of showers in the afternoon.
Sat night..W winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Sun..NW winds 5 to 10 kt. Seas 2 ft.
Sun night..SE winds 5 kt. Seas 2 ft.
Mon..E winds 5 to 10 kt. Seas 2 ft.
Mon night..S winds 10 kt. Seas 3 to 4 ft. A slight chance of showers. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1000 Pm Est Wed Dec 11 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Strong high pressure will build north of the area through Thursday. A low pressure system will impact the area late week, followed by a return to high pressure during the latter half of the weekend. A cold front will cross the area by the middle of next week.


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 120305 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1005 PM EST Wed Dec 11 2019

SYNOPSIS. Strong high pressure will build north of the area through Thursday. A low pressure system will impact the area late week, followed by a return to high pressure during the latter half of the weekend. A cold front will cross the area by the middle of next week.

NEAR TERM /UNTIL 6 AM THURSDAY MORNING/. Late this evening: Light rain showers have now pushed offshore and the rest of the overnight will be dry. Satellite imagery shows clouds moving off to the east and clear skies are now covering about half of the forecast area. Overall, no notable changes needed through the rest of the night.

Early this evening: Somewhat surprisingly, a band of light rain developed across the area late this afternoon and now persists along the coast. This area of rain appears to be aided by divergence in the right entrance region of the upper jet, as well as some PVA in the mid-levels. The rain has developed despite dry air in the lowest 10 kft of the atmosphere. The rain has certainly be light, with perhaps a couple hundredths of an inch possible. The rain won't last too much longer and will shift offshore. Skies should clear through the night and be mostly clear by sunrise Thursday. High pressure will steadily build in through the night which will drive a cool northeast wind. Still expecting a chilly night with lows in the mid 30s to the north, ranging to the upper 30s and low 40s south.

SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/. Moderate to high confidence this period. A low-level high pressure wedge will be in place to start Thursday with any showers remaining well off the GA coast. However, through the day we think clouds will be on the increase from the south and west with a few showers as well especially later in the day, especially in GA. Rain coverage will increase moreso Thursday night, although rain amounts should remain about a tenth of an inch or less. On Friday rain coverage/intensity will maximize as surface low pressure moves northeast through the area and moisture/forcing peak and there could be a few rumbles of thunder Friday night into early Saturday, mainly in GA coincident with minimal low- mid level instability. Otherwise, rain will generally end from southwest to northeast Saturday morning with the SC coast likely the last to see drying. Storm total rainfall across the SC Lowcountry/GA Coastal Empire should generally be 1-2 inches. Temperatures are likely to stay below normal through Friday before getting back above normal Friday night/Saturday.

LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/. Models are in pretty good agreement through the long term period. High pressure will build in for the latter half of the weekend, bringing dry conditions and plenty of sunshine. On Monday, the forecast area will become positioned in the warm sector ahead of low pressure approaching from the west. The day should remain rain-free as best moisture and forcing remains out of the area. The low and associated cold front is progged to cross on Tuesday, bringing the next chance of rain. Temperatures through the period are expected to be above normal.

AVIATION /03Z THURSDAY THROUGH MONDAY/. VFR conditions will prevail at KCHS and KSAV through most period. The main forecast challenge revolves around the arrival of lowering ceilings Thursday afternoon. MVFR ceilings should arrive at KSAV first, and have time it in there at 19z. KCHS will be later, and confidence wasn't high enough so the forecast is for low VFR ceilings. Northeast winds will be gusty and could reach to near 20 knots at times.

Extended Aviation Outlook: Flight restrictions below IFR at times are expected Thursday night into Saturday morning as low pressure impacts the area. Otherwise VFR is expected through Monday.

MARINE. A tightening northeast gradient is anticipated tonight as strong high pressure builds from the north. Solid Small Craft Advisory conditions expected for all waters, though we expect enough 35 kt gusts over the GA waters to hoist a Gale Warning for both AMZ354 and AMZ374 beginning late this evening.

Thursday through Monday: High confidence through the period. Solid Small Craft Advisory conditions will be ongoing Thursday for the entire marine area. Frequent gale- force gusts are expected into Thursday morning across the GA waters, with a low chance across the eastern reaches of the SC waters. Conditions will begin to improve Thursday night temporarily as the pressure gradient weakens with the approach of low pressure from the southwest. However, additional Advisories may be needed Saturday/Saturday night as the low passes by, especially across the offshore waters. High pressure should keep conditions much improved early next week.

TIDES/COASTAL FLOODING. Elevated tide cycles are expected due to increasing astronomical influences with the full moon on Thursday and strong northeasterly winds. Minor to potentially moderate coastal flooding will be possible with the morning high tides Thursday through Saturday and thus Coastal Flood Advisories could be required, especially along the SC coast. Also, heavy rainfall could occur around the time of high tide Friday morning, especially along the GA coast and mainly along the SC coast Saturday morning, which could exacerbate any tidal flooding.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory until 10 PM EST Thursday for AMZ330. Small Craft Advisory until 1 PM EST Friday for AMZ352. Small Craft Advisory until 10 PM EST Friday for AMZ350. Gale Warning until 10 AM EST Thursday for AMZ354-374.



NEAR TERM . BSH SHORT TERM . RJB LONG TERM . ETM AVIATION . BSH/RJB MARINE . JRL/RJB TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 23 mi31 min NE 21 G 27 56°F 62°F6 ft1030.1 hPa (+1.3)45°F
FPKG1 - 8670870 - Fort Pulaski, GA 39 mi51 min NNE 16 G 20 51°F 59°F1032.4 hPa

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA22 mi26 minNE 11 G 1910.00 miOvercast53°F38°F58%1031.2 hPa

Link to 5 minute data for KBQK

Wind History from BQK (wind in knots)
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Last 24hrCalmSW6SW6SW5NW7NW6NW6NW7NW4CalmN8
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2 days agoE5NE7NE5NE7NE6E4NE3E3CalmCalmS4S11S12SW11S9SE7SE8S10S9S8S5S7S5S6

Tide / Current Tables for Dog Hammock, Sapelo River, Georgia
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Dog Hammock
Click for Map
Wed -- 01:20 AM EST     -0.07 feet Low Tide
Wed -- 06:30 AM EST     Moonset
Wed -- 07:14 AM EST     Sunrise
Wed -- 07:38 AM EST     8.19 feet High Tide
Wed -- 01:57 PM EST     0.25 feet Low Tide
Wed -- 05:10 PM EST     Moonrise
Wed -- 05:22 PM EST     Sunset
Wed -- 08:01 PM EST     7.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.9-00.21.43.35.3788.17.35.842.20.80.30.82.23.95.56.676.65.43.8

Tide / Current Tables for Harris Neck, Barbour Island River, Georgia
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Harris Neck
Click for Map
Wed -- 01:30 AM EST     -0.08 feet Low Tide
Wed -- 06:30 AM EST     Moonset
Wed -- 07:14 AM EST     Sunrise
Wed -- 07:59 AM EST     8.51 feet High Tide
Wed -- 02:07 PM EST     0.27 feet Low Tide
Wed -- 05:10 PM EST     Moonrise
Wed -- 05:22 PM EST     Sunset
Wed -- 08:22 PM EST     7.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.30.10.11.12.956.88.18.586.64.72.71.10.30.71.93.65.36.67.27.16.14.4

Weather Map
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wmap_A
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (23,6,7,8)
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Ground Weather Radar Station Charleston, SC
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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.