Sunday, May31, 2020
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Marine Weather and Tides
Garden City, 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 6:17AMSunset 8:26PM Sunday May 31, 2020 4:11 PM EDT (20:11 UTC) Moonrise 1:54PMMoonset 1:55AM 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 321 Pm Edt Sun May 31 2020
.small craft advisory in effect from midnight edt tonight through Monday morning...
Tonight..E winds 10 to 15 kt, becoming ne 15 to 20 kt late this evening. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. A slight chance of showers and tstms.
Mon..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon.
Mon night..E winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Tue..SE winds 10 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon.
Tue night..S winds 10 kt. Seas 2 to 3 ft.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft.
Wed night..S winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..S winds 10 kt. Seas 2 to 3 ft.
Thu night..S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Fri..S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Fri night..S 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 321 Pm Edt Sun May 31 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will extend across the region this week.


7 Day Forecast for Marine Location Near Garden City, GA
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location: 32.07, -81.11     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 311926 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 326 PM EDT Sun May 31 2020

SYNOPSIS. High pressure will extend across the region this week.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. This evening and tonight: Mainly isolated shower and thunderstorm activity will continue to shift to the southwest, primarily along and near the coast. We have kept 20 percent rain chances going, and expand them inland across portions of interior southeast Georgia for a few hours late this afternoon and into the evening. Overall, convection should remain on the weak side with virtually no severe risk. DCAPE values will be around 1,000 J/kg for much of the area so strong gusty winds will be possible, but instability is limited enough to keep the severe threat down. Convection should end completely late this evening and high pressure will continue building in through the night. Cooler and drier air will filter in through the night. Lows are forecast to drop into the upper 60s well inland, ranging to around 70 near the coast.

SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/. Quiet, dry conditions will prevail through the period as high pressure holds through mid-week. Low-level moisture will slowly increase each day as northeast winds gradually shift more onshore in response to high pressure propagating east into the open Atlantic. Highs will peak in the lower-mid 80s Monday then warm into the upper 80s/lower 90s by Wednesday as H8 temperatures rise to 16-17C. Modest sea breeze circulations are likely both Tuesday and Wednesday afternoons which will impact coastal temperatures during the mid- late afternoon hours. Lows will range from the upper 50s inland, lower 60s coast with upper 60s/near 70 beaches Tuesday morning and mid 60s inland, upper 60s coast with lower 70s beaches Wednesday morning.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. The surface pattern late week will consist of high pressure offshore and troughing inland. A cold front could approach towards the end of the period, but it appears to struggle to progress into the area. Convergence along the surface trough and instability will support mention of showers and thunderstorms each day. Highest coverage looks to be Friday and Saturday as deeper moisture and better forcing moves into the area. Temperatures will mainly be above normal.

AVIATION /20Z SUNDAY THROUGH FRIDAY/. The main near term concern is the potential for direct impacts from showers and thunderstorms. KCHS will deal with it first, and there is currently a shower just southeast of the terminal. The outflow and sea breeze appears to have already moved inland of KCHS, so additional activity could stay away through the next couple of hours. At KSAV, direct impacts are less certain and would happen in the late afternoon/early evening hours for timing. Continue to feature just VCSH at both sites due to the lack of coverage and lower confidence in direct impacts. Other than these afternoon/evening showers and thunderstorms, VFR conditions will prevail.

Extended Aviation Outlook: VFR.

MARINE. Tonight: The center of high pressure will move across the Ohio Valley and into the central Appalachians, continuing to build in across the local waters through the night. Northeast winds will prevail, with a surge of flow expected to arrive beginning in the early morning hours and continuing through sunrise Monday. Small Craft Advisories have been expanded to include all marine zones, including the Charleston Harbor starting this afternoon. Weatherflow sites in and around Charleston Harbor have reported frequent 25 knot gusts and this should continue into the evening. There could be a lull before gusts pick up in the harbor with the next surge in the early morning hours. The other advisories will start later this evening and go through the overnight. Seas will steadily increase through sunrise Monday, becoming 3-5 feet out to 20 nm and 5-7 feet beyond.

Monday: A modest northeast wind surge will slowly wind down Monday morning as high pressure builds south. Frequent gusts to 25 kt will persist through mid-morning across the Georgia and far southern South Carolina waters with seas as high as 6 ft lingering into Monday Night for the Georgia offshore waters. Small Craft Advisories will remain in force for these areas.

Tuesday through Friday: A southerly wind regime will prevail for the remainder of the week as high pressure to the north gradually shifts east into the open Atlantic. There could be periods of enhanced winds as high as 15-20 kt, especially Wednesday Night into Thursday as the pressure gradient briefly tightens, but speeds will generally remain less than 15 kt otherwise. Seas will remain 4 ft or less.

Rip Currents: The combination of a 3 second, 8 ft swell, gusty northeast winds along the beaches and some influences from the perigee will support a moderate risk for rip currents for Monday. Diminishing wind and swell will support a low risk for Tuesday.

TIDES/COASTAL FLOODING. The upcoming perigee and full moon will result in elevated tide cycles this week. Minor coastal flooding will be possible during the evening high tides, mainly along the South Carolina coast.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory until 8 AM EDT Monday for AMZ330. Small Craft Advisory from 9 PM this evening to noon EDT Monday for AMZ352. Small Craft Advisory from 9 PM this evening to 8 AM EDT Monday for AMZ350. Small Craft Advisory from midnight tonight to 5 AM EDT Tuesday for AMZ374. Small Craft Advisory from midnight tonight to noon EDT Monday for AMZ354.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 11 mi54 min ESE 8 G 9.9 82°F 80°F1016.6 hPa
SAXG1 - Sapelo Island Reserve, GA 46 mi72 min E 6 86°F 1016 hPa (-1.0)73°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 48 mi82 min E 7.8 G 7.8 81°F 82°F2 ft1015.7 hPa (-0.9)74°F
ACXS1 - ACE Basin Reserve, SC 48 mi87 min ENE 4.1 84°F 1017 hPa73°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA3 mi76 minE 310.00 miMostly Cloudy90°F65°F45%1015.2 hPa
Savannah-Hilton Head International Airport, GA7 mi79 minNW 610.00 miMostly Cloudy92°F64°F41%1015.7 hPa
Hilton Head Island, Hilton Head Airport, SC24 mi82 minE 510.00 miPartly Cloudy82°F73°F74%1016.6 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrW4S6SW9SW7SW5SW5SW4CalmCalmSW5SW3CalmW5CalmNW4CalmW5N7NW4--NW4--NW4E3
1 day agoSE12S8S11S8S7SW7SW6CalmCalmCalmCalmCalmSW4SW6SW6W7W7W5NW5NW6W6W6SW6SW6
2 days agoS10S7S7--S6SE5SE7S5S5S3S5S5S3S3CalmS5S5SW6W4W6SW6SE9SE12SE10

Tide / Current Tables for Savannah (Bull Street), Georgia
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Savannah (Bull Street)
Click for Map
Sun -- 02:54 AM EDT     Moonset
Sun -- 03:55 AM EDT     8.36 feet High Tide
Sun -- 06:18 AM EDT     Sunrise
Sun -- 10:44 AM EDT     0.07 feet Low Tide
Sun -- 02:54 PM EDT     Moonrise
Sun -- 04:40 PM EDT     8.20 feet High Tide
Sun -- 08:25 PM EDT     Sunset
Sun -- 11:21 PM EDT     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.34.56.57.98.47.96.74.931.40.40.112.95.16.988.27.66.34.52.81.30.4

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
Click for Map
Sun -- 01:29 AM EDT     1.60 knots Max Flood
Sun -- 02:53 AM EDT     Moonset
Sun -- 04:21 AM EDT     -0.00 knots Slack
Sun -- 06:18 AM EDT     Sunrise
Sun -- 08:15 AM EDT     -2.62 knots Max Ebb
Sun -- 11:41 AM EDT     0.00 knots Slack
Sun -- 02:04 PM EDT     1.69 knots Max Flood
Sun -- 02:53 PM EDT     Moonrise
Sun -- 05:07 PM EDT     -0.00 knots Slack
Sun -- 08:24 PM EDT     Sunset
Sun -- 08:48 PM EDT     -2.54 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.91.51.510.3-0.5-1.3-2.1-2.6-2.4-1.8-0.80.41.31.71.40.80.1-0.7-1.6-2.3-2.5-2.1-1.3

Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (16,3,4,5)
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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 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.