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Marine Weather and Tides
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7/21/2018 Trying to make page Mobile Friendly |
| Sunrise 6:53AM | Sunset 8:05PM | Monday August 20, 2018 11:02 AM EDT (15:02 UTC) | Moonrise 3:06PM | Moonset 12:54AM | Illumination 67% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 939 Am Edt Mon Aug 20 2018
Rest of today..W winds 5 to 10 kt, becoming S 10 to 15 kt this afternoon. Seas 2 ft.
Tonight..S winds 10 to 15 kt with gusts to 20 kt, becoming sw late. Seas 2 to 3 ft.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers and tstms.
Tue night..SW winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed night..SW winds 10 to 15 kt with gusts to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers and tstms, mainly in the evening.
Thu..E winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Thu night..E winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Fri..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Fri night..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
Rest of today..W winds 5 to 10 kt, becoming S 10 to 15 kt this afternoon. Seas 2 ft.
Tonight..S winds 10 to 15 kt with gusts to 20 kt, becoming sw late. Seas 2 to 3 ft.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers and tstms.
Tue night..SW winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed night..SW winds 10 to 15 kt with gusts to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers and tstms, mainly in the evening.
Thu..E winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Thu night..E winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Fri..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Fri night..E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 939 Am Edt Mon Aug 20 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The area will be situated between an inland trough and atlantic high pressure through Tuesday. A cold front will approach the area from the northwest on Wednesday, then stall just offshore through the end of the week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The area will be situated between an inland trough and atlantic high pressure through Tuesday. A cold front will approach the area from the northwest on Wednesday, then stall just offshore through the end of the week.
7 Day Forecast for Marine Location Near Flemington, GA
Hourly EDIT Helplocation: 31.95, -81.47 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 201350 afdchs area forecast discussion national weather service charleston sc 950 am edt Mon aug 20 2018 Synopsis The area will be situated between an inland trough and atlantic high pressure through Tuesday. A cold front will approach the area from the northwest on Wednesday, then stall just offshore through the end of the week. Near term through tonight Today: no significant changes were made with the latest update. Overall there is not much change in the pattern compared to the past few days. Thus, expect generally warm and muggy conditions to prevail with only isolated showers and thunderstorms much of the afternoon with the best chance toward the deeper moisture and forcing near the midlands csra. The modified 12z chs sounding indicates moderate instability with a bit more dcape than previous days so any stronger storms could more easily produce damaging winds. Also, deep moisture (pwats over 2 inches) and relatively weak deep layer flow storm motions should lead to heavy rain which may produce localized minor flooding. Highs will warm into the lower 90s away from the beaches with heat indices peaking near 100 degrees. Tonight: the latest GFS suggests this cluster or an associated outflow could interact with the sea breeze after near sunset, which could potentially result in a brief uptick in convection. It is unclear exactly how this scenario will evolve, but the rap does loosely support such a scenario. Will carry 30% across interior southeast south carolina into the interior georgia counties along the savannah river to try and account for this with 20% pops elsewhere. Expect any lingering convection to dissipate by midnight with rain-free conditions prevailing during the early morning hours Tuesday. Lows will range from the lower 70s inland to the upper 70s near 80 at the beaches. Short term Tuesday through Thursday Tuesday: in the morning the mid-levels will consist of a weak ridge just off the east coast, getting absorbed into the synoptic flow. Broad high pressure will be off the southeast coast while a trough stretches from the great lakes region into the deep south. As the day progresses the high offshore will get pushed away by the eastward moving trough, which is forecasted to stretch from the great lakes region down into the southeast overnight. At the surface, low pressure over the great lakes region in the morning will quickly move into canada as the day progresses. The low will drag with it a cold front, which is forecasted to be just west of our area by the overnight hours. Also, in front of the front will be a weak surface trough. Moisture is forecasted to increase just ahead of the front. A small swath possibly up to 2.3" is forecasted to move through our area overnight. Per SPC sounding climatology, this is above the 90% moving average for chs for this time of year. Pops may be a little tricky. Models seem to indicate the best chances in the morning over the coastal waters and into the charleston tri- county area. But then this activity decreases and far inland locations experience greater chances. The main swath of precipitation moves through during the first half of the night and then becomes more prominent along the coast and offshore just before daybreak. Despite the approaching front and plenty of moisture, instability is lacking. GFS blcapes struggle to reach 1,000-1,500 j kg during the daylight hours, inching upwards in the evening. Dcapes are marginal, but 0-1 km bulk shear does increase during the evening and overnight. So there certainly is a small wind threat with the strongest storms that manage to develop. The heavy rainfall potential will remain limited due to higher winds aloft helping to move along any storms that do develop. Temperatures are expected to be a few degrees above normal. Wednesday: in the morning the mid-levels will consist of a trough stretching from the great lakes region down into the southeast. This trough is expected to remain in place into the night and amplify. At the surface, a cold front will be just west of our area in the morning. It will slowly move eastward during the day, and become located over or just off our coast by the overnight hours. Pwats drop below 2" during the day, possibly lower than 1.5" far inland. The highest pops are in the vicinity of the front, but models do indicate an area of enhanced precipitation along the immediate coast in the afternoon. Precipitation then shifts offshore during the evening with only some remnants along the coast overnight. Instability is very low for this time of year, so thunderstorms |
could have a difficult time forming in many locations. But if they do, and they become strong, then they will have high dcapes to work with. Though, this all depends on the exact location of the front. If it shifts a lot, then that will require large changes to the forecast. Temperatures should be near normal. Thursday: in the morning the mid-levels will consist of a trough stretching from the northeast u.S. Down into the southeast. Meanwhile, broad high pressure will be located over the southern plains. As the day progresses the trough will lift to the northeast and deamplify, followed quickly by a weak ridge. Meanwhile, high pressure over the southern plains will try to work its way towards the southeast. At the surface, a cold front will stall just offshore while strong high pressure is over the middle ms valley. As the day progresses, the high will move eastward, which will help push the front further away from us. The high will also push more dry air into our area, keeping pwats ~1.75". Even inland dewpoints could fall into the upper 60s, making it feel comfortable for august. Models still indicate the best potential for precipitation is along the coast. However, this may be overdone given the influences of the high. For now, we're only going low end chance pops. Similar to Wednesday, meager instability will make it hard for thunderstorms to develop. But we'll keep them in the forecast for now because it's august after all. Temperatures will be near normal. Long term Thursday night through Sunday Models show a northeastern u.S. Trough lifting into Friday, followed by broad high pressure building from the southern plains over the weekend. A front will be stalled offshore during this time period. The exact location of the front will drive the precipitation potential. Given the uncertainty, we went with a model blend. Additionally, temperatures could be a few degrees below normal. Aviation 14z Monday through Friday Vfr. Coverage of convection should be lower than the past few afternoon evenings, thus no mention of tsra will be included at either kchs or ksav for the 12z TAF cycle. Extended aviation outlook: small probabilities of brief flight restrictions Tuesday due to convection. Higher probabilities of brief flight restrictions due to convection associated with a front Wednesday through Friday. Marine Through tonight: no concerns with a southerly wind regime holding firm. Speeds will remain 15 kt or less during the daytime hours and 15-18 kt overnight within a typical, noctural surge regime. Seas will average 1-3 ft today and 2-4 ft tonight. Tuesday through Friday: the coastal waters will be situated between an inland trough and atlantic high pressure Tuesday. A cold front will approach the area from the west on Wednesday, then stall over or just to the east of the coastal waters through the end of the week. This will lead to mainly southwest winds through Wednesday, followed by changing wind directions on Thursday before generally prevailing from the northeast on Friday. Though, if the front shifts further away, then more changes may be needed with the wind forecast. The highest winds are expected during the first half of Tuesday night due to an elevated pressure gradient from the approaching front. Wind gusts at this time should peak around 20 kt. Though, a few gusts could briefly approach 25 kt across the easternmost portion of the charleston waters and the offshore ga waters beyond 30 nm. No marine headlines are expected. Seas will generally be in the 2-4 ft range this week. The exception will be Tuesday night when some 5 footers are expected in the areas where the wind gusts will be the highest. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... Rjb 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 | 31 mi | 39 min | WNW 8 G 9.9 | 82°F | 83°F | 1019.9 hPa | ||
| SAXG1 - Sapelo Island Reserve, GA | 38 mi | 63 min | W 5.1 | 83°F | 1019 hPa (+1.0) | 75°F | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 50 mi | 73 min | WSW 7.8 G 9.7 | 81°F | 82°F | 2 ft | 1019.2 hPa (+1.4) | 76°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | W G7 | W G11 | SW G7 | S G13 | SW G14 | S G16 | SW G14 | S G16 | S G14 | S | NW | NW | W | SW | SW | S | NW | W | W | W | W | W G8 | W | W |
| 1 day ago | W | W G10 | SW G11 | SW G10 | S G13 | S G16 | S G15 | S G14 | S G12 | S G15 | SW G18 | SW | W G10 | W | W | SW | SW | SW | SW | SW | SW | SW | W | W |
| 2 days ago | W | NW | SE | S G9 | S G11 | S G13 | S G13 | S G12 | S G13 | SW G13 | SW G16 | SW G10 | SW G8 | W | SW | SW G10 | SW | SW | W | W | W | W | W G7 | 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 |
| Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA | 7 mi | 2.1 hrs | SW 5 | 10.00 mi | Fair | 79°F | 73°F | 84% | 1018.9 hPa |
| Hunter U. S. Army Airfield, GA | 18 mi | 2.1 hrs | WSW 4 | 10.00 mi | Fair | 78°F | 76°F | 93% | 1018.5 hPa |
| Savannah-Hilton Head International Airport, GA | 19 mi | 70 min | W 7 | 10.00 mi | Mostly Cloudy | 82°F | 75°F | 79% | 1019.3 hPa |
Wind History from LHW (wind in knots)
| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | W | W | SW | SW G15 | W | SW | SW | S | SW | S | NW | S | E | Calm | SE | Calm | NW | Calm | Calm | SW | Calm | Calm | Calm | SW |
| 1 day ago | SW | SW | W | S | S | SW | SW | SW | SW | SW | S | Calm | W | Calm | SE | S | Calm | SW | Calm | Calm | Calm | Calm | S | SW |
| 2 days ago | SW | E | S | E | W | S | SE | E | SE | SW | Calm | S | SW | SE | Calm | Calm | Calm | W | Calm | Calm | Calm | SW |
Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataHighway bridge
Click for Map
Mon -- 01:53 AM EDT Moonset
Mon -- 02:42 AM EDT 0.17 feet Low Tide
Mon -- 06:52 AM EDT Sunrise
Mon -- 07:15 AM EDT 0.97 feet High Tide
Mon -- 02:45 PM EDT 0.13 feet Low Tide
Mon -- 04:04 PM EDT Moonrise
Mon -- 07:59 PM EDT 1.08 feet High Tide
Mon -- 08:03 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:53 AM EDT Moonset
Mon -- 02:42 AM EDT 0.17 feet Low Tide
Mon -- 06:52 AM EDT Sunrise
Mon -- 07:15 AM EDT 0.97 feet High Tide
Mon -- 02:45 PM EDT 0.13 feet Low Tide
Mon -- 04:04 PM EDT Moonrise
Mon -- 07:59 PM EDT 1.08 feet High Tide
Mon -- 08:03 PM EDT Sunset
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 | 0.3 | 0.2 | 0.2 | 0.3 | 0.6 | 0.8 | 1 | 0.9 | 0.9 | 0.7 | 0.6 | 0.4 | 0.2 | 0.2 | 0.1 | 0.3 | 0.5 | 0.8 | 1 | 1.1 | 1 | 0.9 | 0.8 |
Tide / Current Tables for Belfast, Belfast River, Georgia
EDIT (on/off) Help One Week of DataBelfast
Click for Map
Mon -- 01:54 AM EDT Moonset
Mon -- 05:18 AM EDT 7.15 feet High Tide
Mon -- 06:53 AM EDT Sunrise
Mon -- 11:28 AM EDT 0.98 feet Low Tide
Mon -- 04:04 PM EDT Moonrise
Mon -- 06:02 PM EDT 7.97 feet High Tide
Mon -- 08:03 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:54 AM EDT Moonset
Mon -- 05:18 AM EDT 7.15 feet High Tide
Mon -- 06:53 AM EDT Sunrise
Mon -- 11:28 AM EDT 0.98 feet Low Tide
Mon -- 04:04 PM EDT Moonrise
Mon -- 06:02 PM EDT 7.97 feet High Tide
Mon -- 08:03 PM EDT Sunset
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 |
| 1.5 | 2.3 | 3.6 | 5.1 | 6.4 | 7.1 | 6.9 | 6 | 4.6 | 3.2 | 1.9 | 1.1 | 1.1 | 1.9 | 3.2 | 4.8 | 6.4 | 7.5 | 8 | 7.6 | 6.6 | 5.2 | 3.6 | 2.2 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Charleston, SC (11,2,3,4)
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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. |