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Marine Weather and Tides
Version 3.4 |
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 7:26AM | Sunset 6:55PM | Monday October 14, 2019 10:26 PM EDT (02:26 UTC) | Moonrise 6:44PM | Moonset 6:59AM | Illumination 98% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 944 Pm Edt Mon Oct 14 2019
Tonight..SE winds 5 kt, becoming nw late. Seas 1 foot. A slight chance of showers after midnight.
Tue..N winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot. Showers likely in the morning, then showers with a slight chance of tstms in the afternoon.
Tue night..SE winds 5 to 10 kt, becoming S 15 to 20 kt after midnight. Seas 2 to 3 ft. Showers with a slight chance of tstms.
Wed..W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. A slight chance of tstms. Showers.
Wed night..NW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms in the evening.
Thu..N winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 ft.
Thu night..N winds 5 to 10 kt. Seas 2 ft in the evening, then seas 1 foot.
Fri..NE winds 5 to 10 kt. Seas 2 ft.
Fri night..E winds 10 kt. Seas 2 ft.
Sat..E winds 10 to 15 kt. Seas 2 ft. A slight chance of showers.
Sat night..E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers. Mariners are reminded that winds and seas higher in and near tstms.
Tonight..SE winds 5 kt, becoming nw late. Seas 1 foot. A slight chance of showers after midnight.
Tue..N winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot. Showers likely in the morning, then showers with a slight chance of tstms in the afternoon.
Tue night..SE winds 5 to 10 kt, becoming S 15 to 20 kt after midnight. Seas 2 to 3 ft. Showers with a slight chance of tstms.
Wed..W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. A slight chance of tstms. Showers.
Wed night..NW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms in the evening.
Thu..N winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 ft.
Thu night..N winds 5 to 10 kt. Seas 2 ft in the evening, then seas 1 foot.
Fri..NE winds 5 to 10 kt. Seas 2 ft.
Fri night..E winds 10 kt. Seas 2 ft.
Sat..E winds 10 to 15 kt. Seas 2 ft. A slight chance of showers.
Sat night..E winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 944 Pm Edt Mon Oct 14 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A stationary front will remain over or near the area until a strong cold front moves through on Wednesday. High pressure returns for the second half of the week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A stationary front will remain over or near the area until a strong cold front moves through on Wednesday. High pressure returns for the second half of the week.
7 Day Forecast for Marine Location Near Richmond Hill, GA
Hourly EDIT Helplocation: 31.95, -81.34 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 142326 afdchs area forecast discussion national weather service charleston sc 726 pm edt Mon oct 14 2019 Synopsis A stationary front will remain over or near the area until a strong cold front moves through on Wednesday. High pressure returns for the second half of the week. Near term until 6 am Tuesday morning On the early evening update, minor tweaks to temps and sky cover as dry weather continues over the region, although moisture was increasing at a steady clip along the northeast gulf coast. Tonight: a potent and stacked cyclone aloft near the southern shores of hudson bay in canada will slowly move northeast, as strong short wave drops through the northern plains. We're within a zonal flow to the south of the cyclonic pattern of these features, while an elongated and strong anticyclone prevails over the gulf of mexico. At the surface, the stationary front will descend into georgia late, stretching in an east-west alignment near the i-16 corridor by morning as a wedge of high pressure pushes out of the central appalachians. Conditions will be rainfree for much of the night underneath the surface high and lack of forcing aloft. But a mid level impulse will ride through georgia after about 4 or 5 am and occurs in tandem with strengthening isentropic ascent and moisture advection from the gulf. It is after this time that we anticipate light to perhaps moderate rains developing near and south of i-16 as we approach daybreak. Our pops will range from 10% or less over the charleston quad-county area, 20-30% south of there to i-16, and as high as 40-50% south to the altamaha river basin. We have opted to remove thunder from the forecast for late tonight lacking any instability, either surface or aloft. There looks to be good radiational cooling the first part of the night over our northern zones, before increasing mid and high level clouds overspreads the area with lowering ceilings overnight. This will put a cap on how cool temps can get, especially south, so we have a large range from the upper 50s (and potentially cooler) in the francis marion national forest and rural spots of dorchester and colleton county, to as high as the upper 60s over some immediate coastal areas and many places south of i-16 in georgia. Short term 6 am Tuesday morning through Thursday Tuesday and Wednesday: a wet period of weather is expected as a stationary front over or near southern georgia begins to lift north as a warm front Tuesday well in advance of a strong cold front expected to sweep through the region Wednesday. A fair amount of isentropic ascent associated with the warm front and deep moisture return characterized by pwats near 2.00-2.25 inches will be more than sufficient to support numerous to widespread showers across the area, beginning across southern most areas Tuesday morning, then spreading north into parts of southeast south carolina by Tuesday afternoon. Extensive cloud cover should limit overall instability, but temps should warm a few degrees each day as southerly flow persists ahead of the approaching cold front. In general, high temps should peak in the mid upper 70s Tuesday, then around 80 degrees on Wednesday before cold fropa. Afternoon heating should be sufficient for a few thunderstorms in addition to widespread showers given substantial forcing arriving with the warm cold fronts and longwave trough aloft. The main issue with the forecast will be how much rainfall the area receives before the cold front pushes offshore Wednesday. A zonal flow initially aloft and the development of sfc low pressure near the warm front will play a large role in how much rain locations see across the area. At this time, most areas should experience 1-2 inches of rainfall accumulation, which could enhance a shallow coastal flooding risk along the southeast south carolina coast should precip occur during the morning high tide cycles Tuesday and or Wednesday (see below). Thursday: dry and noticeably cooler conditions will spread across the area with high pressure building behind a departing cold front. In general, high temps will struggle to approach the low mid 70s despite a full day of Sun and westerly flow aloft. Long term Thursday night through Monday Models are in good agreement showing broad high pressure centered over the tn valley Thursday night, moving eastward and offshore by Saturday. The high will bring our area dry conditions through most of Friday. Over the weekend moisture increases from the south and |
that will lead to an increasing risk of showers. High temperatures will gradually warm up in the long term. Aviation 23z Monday through Saturday Kchs:VFR conditions are expected through at least midday Tuesday, then over-running rains moving in from the southwest with a warm front after 18z will tend to lower CIGS and perhaps vsbys late. MVFR CIGS are likely by the end of the day. Ksav:VFR into later tonight, with lowering ceilings and eventually light to moderate rains developing early Tuesday in advance of a warm front. We have introduced MVFR CIGS and vsbys with rains becoming more convective in nature after mid afternoon. Ifr are certainly possible during the last 2-4 hours of the 00z cycle. Extended aviation outlook: periods of showers along with a few thunderstorms will likely impact both chs and sav terminals Tuesday night into Wednesday morning until a strong cold front sweeps through the region. Flight restrictions are expected at either terminal along with gusty winds. Dry high pressure will then result inVFR conditions at both terminals Thursday through Saturday. Marine Tonight: a stationary front will sag south into the waters as a wedge of high pressure builds inland from the central appalachians. The gradient is slack initially, but there will be a small increase in winds to the n-ne over the charleston county waters late as pressures rise in sync with subtle cool advection. On average, winds will be no more than about 10 kt and seas just 1-3 ft. Tuesday through Saturday: a stationary front near the area will slowly lift north as a warm front with numerous to widespread showers and a few thunderstorms. A relatively weak pressure gradient will result across coastal waters Tuesday until a strong cold front approaches the waters Tuesday night into Wednesday morning. Winds will quickly increase along near the front, gusting as high as 25-30 kt by daybreak Wednesday, highest across offshore georgia waters. Seas will also build up 5-7 ft, highest across northern south carolina waters and offshore georgia waters. Small craft advisories will likely be needed for much of the coastal waters late Tuesday night into Wednesday. Even the charleston harbor could need an advisory for a short time period with gusts approaching 25 kt. Winds seas will then decrease subside before the departing cold front Wednesday evening night, ending any small craft advisory across the coastal waters. Conditions will then remain well below small craft advisory levels Thursday and Friday as high pressure builds across coastal waters, then moves east on Saturday. Tides coastal flooding Although tides remain elevated and there is a weak onshore flow, this evening's high tide is forecast to stay just below any advisory level threshold in downtown charleston. A coastal flood advisory is currently not anticipated for the 9:00 to 9:30 pm high tide. Elevated tides will continue into Thursday, resulting in the possibility of shallow coastal flooding around the times of the morning high tide, mainly for downtown charleston and nearby areas. Additional coastal flood advisories are possible. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... short term... long term... aviation... marine... tides coastal flooding... climate... |
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 | 24 mi | 57 min | SSE 1 G 1.9 | 77°F | 77°F | 1018.6 hPa | ||
| SAXG1 - Sapelo Island Reserve, GA | 37 mi | 87 min | S 2.9 | 76°F | 1018 hPa (+1.0) | 71°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 45 mi | 37 min | S 7.8 G 7.8 | 79°F | 80°F | 2 ft | 1018 hPa (+0.9) | 72°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 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 | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | S G11 | S G11 | S G8 | S G9 | SW | NW | NW | NW | S G11 | SW G10 | W | W | W | NW | NW | NW | NW | W | NW | W | NW | W | S | S |
| 1 day ago | S | S G7 | S G5 | S | SW | S | SW | W | W | SW | SW | SW G8 | W G10 | SW | SW G9 | SW | SW G12 | S G11 | S G10 | S G11 | S G13 | S G11 | S G10 | S G7 |
| 2 days ago | SE | SE | SE | SE | SE | SE | S | S | N | NW | NW | NW | N | NW | -- | NE | E | SE G12 | SE G9 | SE G10 | SE G10 | SE | S G9 | S G7 |
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 | 11 mi | 31 min | N 0 | 8.00 mi | Fair | 72°F | 65°F | 80% | 1017.9 hPa |
| Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA | 13 mi | 31 min | N 0 | 10.00 mi | A Few Clouds | 72°F | 66°F | 85% | 1018.5 hPa |
| Savannah-Hilton Head International Airport, GA | 15 mi | 34 min | N 0 | 10.00 mi | Partly Cloudy | 73°F | 66°F | 81% | 1018.4 hPa |
Link to 5 minute data for KSVN
Wind History from SVN (wind in knots)
| 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 | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | S | S | S | NW | W | Calm | Calm | S | SW | SW | W | W | NW | W | W | Calm | W | Calm | NW | W | Calm | Calm | Calm | Calm |
| 1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SW | SW | SW | SW | SW | SE | SE | S | SE | SE | S | S | S | S |
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | Calm | Calm | Calm | Calm | Calm | Calm | SE | SE | S | Calm | SE | Calm |
Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
EDIT Weekend mode (on/off) (on/off) Help One Week of DataHighway bridge
Click for Map
Mon -- 12:05 AM EDT 1.13 feet High Tide
Mon -- 07:26 AM EDT 0.07 feet Low Tide
Mon -- 07:27 AM EDT Sunrise
Mon -- 07:59 AM EDT Moonset
Mon -- 12:18 PM EDT 1.18 feet High Tide
Mon -- 06:54 PM EDT Sunset
Mon -- 07:43 PM EDT Moonrise
Mon -- 07:48 PM EDT 0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:05 AM EDT 1.13 feet High Tide
Mon -- 07:26 AM EDT 0.07 feet Low Tide
Mon -- 07:27 AM EDT Sunrise
Mon -- 07:59 AM EDT Moonset
Mon -- 12:18 PM EDT 1.18 feet High Tide
Mon -- 06:54 PM EDT Sunset
Mon -- 07:43 PM EDT Moonrise
Mon -- 07:48 PM EDT 0.11 feet Low Tide
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 |
| 1.1 | 1.1 | 1 | 0.8 | 0.6 | 0.4 | 0.2 | 0.1 | 0.1 | 0.4 | 0.7 | 1 | 1.2 | 1.2 | 1.1 | 0.9 | 0.7 | 0.5 | 0.3 | 0.1 | 0.1 | 0.3 | 0.6 | 0.9 |
Tide / Current Tables for Fort McAllister, Ogeechee River, Georgia
EDIT (on/off) Help One Week of DataFort McAllister
Click for Map
Mon -- 04:17 AM EDT 0.50 feet Low Tide
Mon -- 07:27 AM EDT Sunrise
Mon -- 07:58 AM EDT Moonset
Mon -- 09:47 AM EDT 7.88 feet High Tide
Mon -- 04:39 PM EDT 0.77 feet Low Tide
Mon -- 06:53 PM EDT Sunset
Mon -- 07:43 PM EDT Moonrise
Mon -- 10:09 PM EDT 7.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 04:17 AM EDT 0.50 feet Low Tide
Mon -- 07:27 AM EDT Sunrise
Mon -- 07:58 AM EDT Moonset
Mon -- 09:47 AM EDT 7.88 feet High Tide
Mon -- 04:39 PM EDT 0.77 feet Low Tide
Mon -- 06:53 PM EDT Sunset
Mon -- 07:43 PM EDT Moonrise
Mon -- 10:09 PM EDT 7.43 feet High Tide
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 |
| 5.7 | 4.2 | 2.6 | 1.3 | 0.5 | 0.8 | 2.3 | 4.3 | 6.3 | 7.6 | 7.9 | 7.3 | 6.2 | 4.8 | 3.3 | 1.9 | 1 | 0.8 | 1.8 | 3.6 | 5.4 | 6.8 | 7.4 | 7.2 |
Weather Map
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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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Charleston, SC (22,6,7,8)
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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. |