Thursday, April2, 2020
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Marine Weather and Tides
Darien, GA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:11AMSunset 7:47PM Thursday April 2, 2020 12:33 PM EDT (16:33 UTC) Moonrise 12:51PMMoonset 2:24AM Illumination 72% 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
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AMZ450 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 957 Am Edt Thu Apr 2 2020
Rest of today..Northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Inland waters a light chop.
Tonight..East northeast winds 5 to 10 knots becoming north after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Inland waters a light chop.
Friday..North winds 5 to 10 knots becoming east northeast in the afternoon. Seas 2 to 4 feet. Dominant period 11 seconds. Inland waters a light chop.
Friday night..South winds 5 to 10 knots becoming west after midnight. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Saturday..North winds 5 to 10 knots becoming east northeast in the afternoon. Seas 2 to 4 feet. Dominant period 15 seconds. Inland waters a light chop.
Saturday night..East southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Sunday..East southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. A slight chance of showers.
Sunday night and Monday..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 957 Am Edt Thu Apr 2 2020
Synopsis.. Intense low pressure will meander over the western atlantic waters to the north of bermuda through Saturday before pushing eastward and further out to sea on Sunday. This feature will keep elevated seas in place through early next week, with a building long period ocean swell arriving this weekend and combined wave heights reaching small craft advisory levels beginning on Saturday night. Otherwise, weak high pressure will continue to build into the southeastern states through Friday, allowing for sea breeze formation each afternoon over the near shore waters. Stronger high pressure will then build over the carolinas on Sunday and will move southeastward, with the axis of this ridge shifting south of the northeast florida waters early next week, resulting in prevailing offshore winds.
Gulf stream.. The approximate location of the west wall of the gulf stream as of apr 02, 2020 at 1200 utc... 62 nautical miles east of flagler beach. 72 nautical miles east of saint augustine beach. 83 nautical miles east of jacksonville beach. 97 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Darien, GA
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location: 31.32, -81.36     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 021454 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1054 AM EDT Thu Apr 2 2020

SYNOPSIS. High pressure will prevail into early next week. A cold front will approach the region towards the middle of next week.

NEAR TERM /THROUGH TONIGHT/. Late this morning: A very quiet quiet and comfortable day on tap across southeast South Carolina and southeast Georgia. North to south oriented high pressure centered north of the Great Lakes will continue to extend into the forecast area. This setup will continue to drive north to northwest flow across the forecast area, but the gradient will be much more relaxed so overall wind speeds will be less than yesterday. More importantly, we have lost the plentiful low level moisture and the influence of the trough aloft so we are currently under clear skies. With unabated insolation, temperatures will be warmer than Wednesday. The KCHS 12z sounding recorded a 1000-850 mb thickness of 1335 which would give a high around 68. With weak downslope flow, we continue to think we will overperform this a bit. The forecast features 68-70 around the Tri-County, and roughly 70-73 across southeast Georgia.

Tonight: The synoptic pattern will change little with high pressure remaining anchored over the area. The boundary layer will decouple by mid-evening result in a calm/light wind field. The combination of clear skies and calm/light winds will yield strong radiational cooling and low end of the guidance envelop was utilized to construct low temperatures Friday morning. Some high clouds associated with a west-east oriented jet streak propagating along the Gulf Coast could work into areas south of the I-16 corridor right around daybreak, but this should not have an influence on overnight lows. Lows will range from the lower-mid 40s inland with upper 40s/lower 50s at the coast with lower-mid 50s at the beaches. There could be a few lower 40s in some of the normally cooler more sheltered areas such as the Francis Marion National Forecast.

SHORT TERM /FRIDAY THROUGH SUNDAY/. Friday through Sunday: High pressure will prevail through the period. The ridge axis will stay west of the area Friday into Saturday, before slowly shifting into the Atlantic later in the weekend. The weather will be quite pleasant with dry conditions and low humidity values. Developing return flow on Sunday will bring moisture levels up a bit, but will bring no more than an increase in cloud cover. Temperatures will be seasonable.

LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/. Atlantic high pressure will be the dominant feature on Monday, with a dry forecast to continue. High pressure will then weaken as low pressure and an associated cold front moves into the eastern U.S. towards the middle of the week. Differences exist between model solutions regarding details, but moisture will increase and a stream of shortwave energy is progged to pass through, so rain chances will return. PoPs are held in the chance range. Temperatures will be above normal through the period.

AVIATION /15Z THURSDAY THROUGH MONDAY/. VFR. Winds could get a little gusty during peak heating, but no major impacts are expected.

Extended Aviation Outlook: VFR is expected to prevail into early next week.

MARINE. Through Tonight: There are no concerns. A northwest wind regime will dominate with high pressure centered to the west. There are signs that an ill-defined sea breeze circulation could form along the middle and southern Georgia coast later this afternoon resulting in a weak, somewhat chaotic wind field over the Georgia nearshore leg. Otherwise, winds will average 10 kt or less today with 10-15 kt tonight. Seas will range from 1-2 ft nearshore waters and 2-4 ft over the Georgia offshore waters through tonight. A period of 4-5 ft seas are expected to impact the far eastern portions of the Georgia offshore leg (mainly 50-60 NM) through this afternoon.

Friday through Tuesday: High pressure will prevail into early next week. Winds will gradually become more onshore through the weekend as the ridge axis slides into the Atlantic. Conditions are expected to stay below Small Craft Advisory criteria, although 6 foot seas could enter the far outer portions of the Outer Georgia waters late weekend.

TIDES/COASTAL FLOODING. Elevated tide levels are expected next week due to astronomical influences from the upcoming full moon and lunar perigee. Minor saltwater flooding will be possible around the times of high tide, especially each evening.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 8 mi154 min NNE 7 64°F 1018 hPa (+2.0)51°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 27 mi104 min NNE 14 G 16 60°F 67°F3 ft1017.8 hPa (+1.4)50°F
41112 - Offshore Fernandina Beach, FL (132) 42 mi94 min 67°F3 ft
FRDF1 - 8720030 - Fernandina Beach, FL 45 mi106 min NW 2.9 G 5.1 67°F 70°F1018.1 hPa

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA7 mi39 minS 610.00 miMostly Cloudy66°F45°F46%1017.9 hPa
Brunswick, Malcolm McKinnon Airport, GA12 mi41 minE 810.00 miOvercast63°F48°F60%1017.9 hPa

Link to 5 minute data for KBQK

Wind History from BQK (wind in knots)
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NW7N9W7NW5N9NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW5CalmCalmN4NE3E5S3
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2 days agoW5CalmW7NW8E4SE8SE5SE4SE4SE3CalmNW5CalmE3CalmCalmW3NW4CalmCalmW5S5SW9W6

Tide / Current Tables for Jones Creek entrance, Hampton River, Georgia
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Jones Creek entrance
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Thu -- 03:24 AM EDT     Moonset
Thu -- 04:15 AM EDT     7.21 feet High Tide
Thu -- 07:12 AM EDT     Sunrise
Thu -- 10:02 AM EDT     1.05 feet Low Tide
Thu -- 01:51 PM EDT     Moonrise
Thu -- 04:53 PM EDT     6.31 feet High Tide
Thu -- 07:45 PM EDT     Sunset
Thu -- 10:26 PM EDT     0.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.14.55.86.87.26.95.84.32.81.61.11.32.13.34.45.46.16.35.84.53.11.70.80.8

Tide / Current Tables for Old Tower, Sapelo Island, Georgia
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Old Tower
Click for Map
Thu -- 03:24 AM EDT     Moonset
Thu -- 03:24 AM EDT     6.87 feet High Tide
Thu -- 07:11 AM EDT     Sunrise
Thu -- 10:03 AM EDT     1.00 feet Low Tide
Thu -- 01:50 PM EDT     Moonrise
Thu -- 04:02 PM EDT     6.01 feet High Tide
Thu -- 07:45 PM EDT     Sunset
Thu -- 10:26 PM EDT     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.556.26.86.764.83.52.31.411.32.33.64.85.765.74.93.72.51.40.70.8

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 (12,3,4,5)
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Ground Weather Radar Station Jacksonville, FL
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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 numerous 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.