|
Marine Weather and Tides
Version 3.4 |
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. |
| Sunrise 6:17AM | Sunset 8:34PM | Thursday June 21, 2018 1:03 AM EDT (05:03 UTC) | Moonrise 1:40PM | Moonset 1:11AM | Illumination 53% |  |
Marine Forecasts
EDIT (on/off) Help| AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 1242 Am Edt Thu Jun 21 2018 Tonight..SW winds 10 to 15 kt. Seas 2 ft. Thu..SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms in the morning. Thu night..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms. Fri..W winds 10 kt, becoming sw in the afternoon. Seas 2 ft. A slight chance of showers and tstms. Fri night..SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms. Sat..SW winds 10 kt. Seas 2 ft. A slight chance of showers and tstms. Sat night..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms. Sun..SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. Sun night..S winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms. Mon..SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms. Mon night..SW winds 10 to 15 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 1242 Am Edt Thu Jun 21 2018 Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The region will remain between atlantic high pressure well the east and an inland trough of low pressure through later this week. The trough of low pressure is expected to settle over the region and will likely persist into early next week. A cold front could push into the region by the middle of next week. |
7 Day Forecast for Marine Location Near Thunderbolt, GA
Hourly EDIT Helplocation: 32.04, -81.04 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 210447 afdchs area forecast discussion national weather service charleston sc 1247 am edt Thu jun 21 2018 Synopsis The region will remain between atlantic high pressure well the east and an inland trough of low pressure through later this week. The trough of low pressure is expected to settle over the region and will likely persist into early next week. A cold front could push into the region by the middle of next week. Near term until 6 am this morning Mainly dry weather is anticipated overnight. Convective debris clouds will continue to diminish and thin, and skies will be mostly clear to partly cloudy. We're seeing a few signs of light fog forming where earlier rains occurred, and this could lead to some pockets of 2-4 nm visibilities overnight, but no mention required in the forecast. Lows will make it down only to the mid and upper 70s, with even a few sites close to 80f near the coast and in downtown charleston. Short term 6 am this morning through Saturday The summer solstice occurs at 607 am Thursday. The biggest change in the overall pattern through the rest of the week and into early this weekend is that the strong mid upper level ridge will gradually weaken. The ridge weakens in response to a strong upper low that models have been persistently showing will form over the central u.S. And slowly move east-northeast toward the lower great lakes by the end of the period. In addition, deep layer moisture increases some. The combination of lower mid upper heights, better deep layer moisture and some vorticity advection will result in slightly higher pops, generally in the chance range, each afternoon. The difficulty is that the best moisture does not necessarily coincide with any weak upper level forcing each day, which is why we left chance pops for mainly afternoon evening. The best deep layer moisture looks to be Thursday, but oddly, guidance is reflecting slightly lower pops. Given the lower upper heights and the potential for some large scale weak upper forcing, there may be a slightly higher chance for strong to low end severe storms each afternoon. However, the chances are not enough to mention in the forecast or hwo at this point. Temperatures will remain well above normal, but not quite as hot as last few days as upper heights fall by about 5 decameters. Guidance showing considerable drop in surface dewpoint temperatures on Thursday, which seems a little suspect, but did keep upper 60s inland and lower to mid 70s at the coast. The combination of slightly lower dewpoints and temperatures will lead to lower heat indices, but still in the lower 100s likely each afternoon. Lows very warm, in the mid to upper 70s, to around 80 at the coast. Long term Saturday night through Wednesday |
The upper ridge will temporarily rebuild over the southeast on Sunday, causing temperatures to rise back into the middle 90s, reducing convective coverage, and potentially requiring heat advisories. A substantial upper vort MAX is forecast to drop southeast into the area Monday, pushing a weak back door cold front through the area Monday night or Tuesday. There is increasing model agreement that temps will be a couple degrees cooler next Tuesday and Wednesday. Aviation 06z Thursday through Monday MainlyVFR. The potential for convection late Thursday is low enough that we don't require any mention in the tafs at this time. Extended aviation outlook: through this weekend: mostlyVFR conditions. However, chances for afternoon convection will be slightly higher through much of the period, which will result in slightly higher chances for brief convectively induced flight restrictions. Marine Overnight: a decent SW flow between an inland trough and high pressure to the se, as speeds average 10-15 kt throughout. Seas will bounce around between 2 and 3 ft. Long term marine... (Friday through Thursday)... no highlights expected through Monday. The marine area will remain between atlantic high pressure well to the east and lower pressure over the land. This will produce southwest winds of mainly 15 knots or less, highest during the afternoon and near the coast with the sea breeze, with seas 2 to 3 feet. By the end of the period early next week, models are indicating the potential for a cold front to approach from the north, which could increase the pressure gradient enough to produce 15-20 knot winds. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... short term... long term... 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 | 7 mi | 64 min | WSW 4.1 G 6 | 80°F | 81°F | 1012.5 hPa (+1.0) | ||
| 41033 | 37 mi | 56 min | SSW 7.8 G 14 | 82°F | 84°F | 1011.3 hPa | ||
| SAXG1 - Sapelo Island Reserve, GA | 45 mi | 64 min | SW 8.9 | 80°F | 1012 hPa (+1.0) | 75°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 45 mi | 74 min | SSW 12 G 14 | 82°F | 83°F | 3 ft | 1011.7 hPa (+0.4) | |
| ACXS1 - ACE Basin Reserve, SC | 47 mi | 79 min | Calm | 81°F | 1012 hPa | 78°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | |
| Last 24hr | SW G8 | SW | SW G8 | SW | W | SW | SW | SW | N | S | S | S G9 | S G10 | S G13 | S G11 | S G12 | N | S | S G12 | SW G8 | W | NW | SW | W |
| 1 day ago | SW | SW G12 | SW G9 | SW G8 | W | W G8 | W | SW G8 | SW | SW | S | S | S G9 | S G9 | S G12 | S G11 | S G12 | S G15 | S G17 | SW G14 | SW G12 | S G8 | SW | SW |
| 2 days ago | NE | -- | -- | NW | W G8 | SW | -- | S G9 | S | S G10 | S G11 | SE G10 | S G10 | S G10 | S G10 | S | S G11 | SW G11 | SW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Hunter U. S. Army Airfield, GA | 6 mi | 68 min | SW 3 | 10.00 mi | Fair | 78°F | 73°F | 88% | 1011.5 hPa |
| Savannah-Hilton Head International Airport, GA | 11 mi | 71 min | WSW 5 | 10.00 mi | A Few Clouds | 79°F | 75°F | 88% | 1012.1 hPa |
| Hilton Head Island, Hilton Head Airport, SC | 22 mi | 69 min | S 5 | 10.00 mi | Fair | 82°F | 77°F | 84% | 1012.2 hPa |
Wind History from SVN (wind in knots)
| 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 | 12 AM | |
| Last 24hr | S | Calm | Calm | Calm | Calm | Calm | W | Calm | Calm | Calm | SW | Calm | S | SE | SE | W G22 | E | S | Calm | S | SW | N | W | SW |
| 1 day ago | S | S | Calm | S | SW | Calm | Calm | SW | SW | Calm | Calm | S | SW | S | S | SE | SE | S | S | S G15 | S | S | S | SW |
| 2 days ago | Calm | W | Calm | Calm | Calm | SW | W | Calm | S | SE | SE | SE | SE | SE | SE | S | S | S | Calm | S |
Tide / Current Tables for Thunderbolt, Wilmington River, Georgia
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Thunderbolt Click for Map Thu -- 02:10 AM EDT Moonset Thu -- 03:44 AM EDT 8.24 feet High Tide Thu -- 06:18 AM EDT Sunrise Thu -- 09:53 AM EDT -0.11 feet Low Tide Thu -- 02:39 PM EDT Moonrise Thu -- 04:29 PM EDT 8.31 feet High Tide Thu -- 08:33 PM EDT Sunset Thu -- 10:30 PM EDT 0.47 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 3.3 | 5.2 | 6.9 | 8 | 8.2 | 7.4 | 5.8 | 3.8 | 1.9 | 0.4 | -0.1 | 0.5 | 1.9 | 3.8 | 5.8 | 7.4 | 8.2 | 8.2 | 7.3 | 5.7 | 3.7 | 1.8 | 0.6 | 0.6 |
Tide / Current Tables for Savannah River Entrance, Georgia Current
EDIT (on/off) Help One Week of Data| Savannah River Entrance Click for Map Thu -- 12:51 AM EDT 2.09 knots Max Flood Thu -- 02:09 AM EDT Moonset Thu -- 04:22 AM EDT -0.01 knots Slack Thu -- 06:17 AM EDT Sunrise Thu -- 07:48 AM EDT -2.16 knots Max Ebb Thu -- 10:31 AM EDT 0.01 knots Slack Thu -- 01:22 PM EDT 2.15 knots Max Flood Thu -- 02:38 PM EDT Moonrise Thu -- 05:02 PM EDT -0.00 knots Slack Thu -- 08:32 PM EDT Sunset Thu -- 08:36 PM EDT -2.32 knots Max Ebb Thu -- 11:12 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 1.9 | 2.1 | 1.9 | 1.4 | 0.4 | -0.8 | -1.6 | -2 | -2.1 | -1.7 | -0.7 | 0.6 | 1.7 | 2.1 | 2.1 | 1.8 | 1.2 | 0.1 | -1.1 | -1.8 | -2.2 | -2.3 | -1.6 | -0.3 |
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Charleston, SC (1,6,7,8)
(on/off) Help |  |  |
Ground Weather Radar Station Charleston, SC
(on/off) Help
Ad by Google
|
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. |