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Marine Weather and Tides
Version 3.4 |
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 6:50AM | Sunset 8:04PM | Tuesday August 20, 2019 12:02 PM EDT (16:02 UTC) | Moonrise 10:08PM | Moonset 10:13AM | Illumination 75% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 1006 Am Edt Tue Aug 20 2019
Today..S winds 5 to 10 kt, becoming se. Seas 2 ft. A slight chance of showers this morning.
Tonight..S winds 10 kt. Seas 2 ft.
Wed..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Wed night..S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Thu..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Thu night..S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Fri..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Fri night..S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sat..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
Today..S winds 5 to 10 kt, becoming se. Seas 2 ft. A slight chance of showers this morning.
Tonight..S winds 10 kt. Seas 2 ft.
Wed..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Wed night..S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Thu..S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms.
Thu night..S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Fri..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Fri night..S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Sat..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1006 Am Edt Tue Aug 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area.
7 Day Forecast for Marine Location Near Garden City, GA
Hourly EDIT Helplocation: 32.07, -81.11 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 201428 afdchs area forecast discussion national weather service charleston sc 1028 am edt Tue aug 20 2019 Synopsis Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area. Near term through tonight The wave of low pressure that was earlier within the central savannah river valley has become less evident, while the associated mid level low will drift northeast into the south carolina upstate. A vort tail extending from the low will move into our area throughout the day, and that along with differential heating boundaries resulting from the expansive cloud cover, plus the sea breeze will be the main focus for convection. We have just isolated to scattered showers this morning ,mainly near and west of us-301 and over the south carolina coastal counties. Coverage will ramp up into the 50-60% range during the mid and late afternoon, when the best interaction of boundaries occurs and the sea breeze becomes more active. This appears to be generally inland from us-17. Modified soundings due yield decent thermodynamics, especially in regards to SBCAPE as high as 3300-3900 j kg, along with lifted indices of -7 to -9c and dcape of 1000-1300 j kg. So maybe there is a risk for a couple of stronger or marginally severe storms where the strongest updrafts occur due to boundary collisions between 3 pm and 7 pm. This of course is dependent upon us actually reaching our forecast maximum temps. And this is not a certainty given the extensive cloud cover from this morning that will cause some havoc with diurnal and maximum temps. On average we raised hourly temps to the east early on and lowered them inland, while just tweaking the highs for this afternoon we have them reaching 87-91f. Isolated showers and storms may persist over the marine zones and inland counties tonight. Low temperatures are forecast to range from the low to mid 70s inland to the upper 70s along the coast. Short term Wednesday through Friday Moderate to high confidence this period. Deep layer troughing will linger inland while high pressure persists offshore. Mainly expecting near normal rain chances, especially each afternoon evening. Given the deep moisture and generally light low- mid level winds there will at least be a small risk of localized heavy rain flooding. Also can't completely rule out isolated severe storms each day but conditions aren't that favorable for much severe weather due to limited instability deep layer shear. Temperatures should be near to above normal. |
Long term Friday night through Monday Low to moderate confidence this period. The pattern doesn't change much until a cold front likely pushes into the area this weekend, possibly moving through southeast ga as well early next week. We prefer the slower wpc ECMWF guidance with regard to the frontal passage timing. Eventually a more fall-like high pressure wedge pattern should set up and feature cooler temperatures and above normal rain chances. Think the severe storm risk will be low with possibly a better risk for some flooding given the deep moisture and weak storm motions leading to some training. Aviation 14z Tuesday through Saturday Ceilings and visibility values are forecast to remain generallyVFR at kchs and ksav through the 12z TAF period. Latest trends on radar and from the cams indicate isolated showers and thunderstorms will occur over the coastal counties throughout the day. The potential for tsras appears along and west of i-95 corridor this afternoon. I will highlight the thunderstorm potential at ksav with a tempo between 20z-24z, with vcsh throughout the day at kchs. Extended aviation outlook: periodic restrictions at kchs ksav each day through Friday, mainly from afternoon evening showers and thunderstorms. More significant restrictions are likely this weekend due to increased moisture and a cold front moving south through the area. Marine The forecast waters will lie near the western parts of typical atlantic ridge. This will lead to a surface pattern that will generally support steady south winds between 10-15 kts today and tonight. Wave heights are forecast to range between 2-3 ft. Wednesday through Sunday: atlantic high pressure and an inland trough will result in mainly south southwest winds around 15 knots or less through the period. No significant marine impacts are expected other than some stronger storms from time to time. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... short term... Rjb long term... Rjb 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 Temp | Water Temp | Waves | Pressure | DewPt |
| FPKG1 - 8670870 - Fort Pulaski, GA | 11 mi | 63 min | SSW 4.1 G 5.1 | 85°F | 84°F | 1021.5 hPa (+1.2) | ||
| 41033 | 40 mi | 55 min | SSW 7.8 G 12 | 83°F | 85°F | 1021.1 hPa | ||
| SAXG1 - Sapelo Island Reserve, GA | 46 mi | 63 min | SW 2.9 | 86°F | 1021 hPa (+1.0) | 72°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 48 mi | 73 min | S 1.9 G 1.9 | 82°F | 82°F | 1 ft | 1020.8 hPa (+1.1) | 77°F |
| ACXS1 - ACE Basin Reserve, SC | 48 mi | 78 min | SSW 1 | 86°F | 1021 hPa | 76°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 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 | |
| Last 24hr | SW | S G10 | S G12 | S G10 | SW G12 | S G11 | S G16 | S G11 | S G10 | S G9 | SW | SW | S G8 | SW G9 | S | S | S G8 | SW | S | SW | SW | SW G7 | SW G7 | S |
| 1 day ago | SW G8 | SW | SE | S G8 | S G12 | S G12 | S G10 | SW G13 | SW G11 | SW G14 | SW G11 | SW G12 | W | SW G13 | W | W | SW | SW | W | SW | SW | W | N | S |
| 2 days ago | SW G17 | SW G18 | SW G16 | SW G18 | SW G16 | SW G16 | NW G20 | S | SW G11 | S G5 | SW G11 | SW G19 | SW G13 | W G11 | W G10 | SW G8 | SW G10 | SW G8 | SW | SW | W G10 | SW G10 | SW G12 | SW G10 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Hunter U. S. Army Airfield, GA | 3 mi | 67 min | N 0 | 10.00 mi | Partly Cloudy | 86°F | 72°F | 65% | 1020.6 hPa |
| Savannah-Hilton Head International Airport, GA | 7 mi | 70 min | SSE 4 | 10.00 mi | Mostly Cloudy | 86°F | 75°F | 70% | 1021 hPa |
| Hilton Head Island, Hilton Head Airport, SC | 24 mi | 73 min | WSW 4 | 10.00 mi | Partly Cloudy | 86°F | 73°F | 66% | 1021.3 hPa |
Link to 5 minute data for KSVN
Wind History from SVN (wind in knots)
| 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 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 | |
| Last 24hr | SE | S | SE | S | SE | SE | S | S | Calm | SE | S | S | Calm | Calm | Calm | Calm | W | SW | Calm | Calm | ||||
| 1 day ago | W | W | Calm | Calm | SE | SE | S | S | S | SW | SW | SW | Calm | Calm | Calm | Calm | W | W | ||||||
| 2 days ago | S | S | S | S | S | SW | W | SW | N | S | Calm | S | SW | SW | SW | W | SW | SW | Calm | SW | SW | SW |
Tide / Current Tables for Savannah (Bull Street), Georgia
EDIT Weekend mode (on/off) (on/off) Help One Week of DataSavannah (Bull Street)
Click for Map
Tue -- 06:27 AM EDT 0.59 feet Low Tide
Tue -- 06:51 AM EDT Sunrise
Tue -- 11:13 AM EDT Moonset
Tue -- 12:02 PM EDT 7.83 feet High Tide
Tue -- 06:35 PM EDT 1.18 feet Low Tide
Tue -- 08:03 PM EDT Sunset
Tue -- 11:07 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 06:27 AM EDT 0.59 feet Low Tide
Tue -- 06:51 AM EDT Sunrise
Tue -- 11:13 AM EDT Moonset
Tue -- 12:02 PM EDT 7.83 feet High Tide
Tue -- 06:35 PM EDT 1.18 feet Low Tide
Tue -- 08:03 PM EDT Sunset
Tue -- 11:07 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 8 pm | 9 pm | 10 pm | 11 pm |
| 7.9 | 7.4 | 6.5 | 5 | 3.2 | 1.6 | 0.7 | 0.8 | 2 | 4.1 | 6 | 7.4 | 7.8 | 7.5 | 6.7 | 5.4 | 3.7 | 2.2 | 1.3 | 1.3 | 2.1 | 3.9 | 5.7 | 7 |
Tide / Current Tables for Savannah River Entrance, Georgia Current
EDIT (on/off) Help One Week of DataSavannah River Entrance
Click for Map
Tue -- 12:50 AM EDT -0.00 knots Slack
Tue -- 03:38 AM EDT -1.66 knots Max Ebb
Tue -- 06:51 AM EDT Sunrise
Tue -- 06:57 AM EDT 0.00 knots Slack
Tue -- 09:32 AM EDT 1.93 knots Max Flood
Tue -- 11:12 AM EDT Moonset
Tue -- 01:05 PM EDT -0.00 knots Slack
Tue -- 03:47 PM EDT -1.68 knots Max Ebb
Tue -- 07:20 PM EDT 0.00 knots Slack
Tue -- 08:02 PM EDT Sunset
Tue -- 09:52 PM EDT 1.61 knots Max Flood
Tue -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:50 AM EDT -0.00 knots Slack
Tue -- 03:38 AM EDT -1.66 knots Max Ebb
Tue -- 06:51 AM EDT Sunrise
Tue -- 06:57 AM EDT 0.00 knots Slack
Tue -- 09:32 AM EDT 1.93 knots Max Flood
Tue -- 11:12 AM EDT Moonset
Tue -- 01:05 PM EDT -0.00 knots Slack
Tue -- 03:47 PM EDT -1.68 knots Max Ebb
Tue -- 07:20 PM EDT 0.00 knots Slack
Tue -- 08:02 PM EDT Sunset
Tue -- 09:52 PM EDT 1.61 knots Max Flood
Tue -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 8 pm | 9 pm | 10 pm | 11 pm |
| 0.5 | -0.1 | -1 | -1.6 | -1.6 | -1.4 | -0.9 | 0 | 1.1 | 1.8 | 1.9 | 1.4 | 0.7 | 0.1 | -0.8 | -1.5 | -1.7 | -1.4 | -1 | -0.3 | 0.6 | 1.4 | 1.6 | 1.3 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
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.
Link to Loop
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 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. |