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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 7:22AM | Sunset 7:38PM | Saturday March 23, 2019 5:04 PM EDT (21:04 UTC) | Moonrise 9:43PM | Moonset 8:21AM | Illumination 91% |  |
AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 259 Pm Edt Sat Mar 23 2019
Tonight..E winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..S winds 10 kt. Seas 2 ft.
Mon..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft. A slight chance of showers and tstms in the afternoon.
Mon night..SW winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms.
Tue..NW winds 10 to 15 kt, becoming ne 15 to 20 kt in the afternoon. Seas 2 ft, building to 3 to 4 ft in the afternoon. A chance of showers.
Tue night..NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. A chance of showers, mainly in the evening.
Wed..NE winds 20 kt. Seas 5 to 7 ft.
Wed night..NE winds 15 to 20 kt. Seas 5 to 7 ft.
Thu..NE winds 15 to 20 kt. Seas 5 to 7 ft.
Thu night..NE winds 10 to 15 kt. Seas 5 to 7 ft. Mariners are reminded that winds and seas higher in and near tstms.
Tonight..E winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..S winds 10 kt. Seas 2 ft.
Mon..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft. A slight chance of showers and tstms in the afternoon.
Mon night..SW winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms.
Tue..NW winds 10 to 15 kt, becoming ne 15 to 20 kt in the afternoon. Seas 2 ft, building to 3 to 4 ft in the afternoon. A chance of showers.
Tue night..NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. A chance of showers, mainly in the evening.
Wed..NE winds 20 kt. Seas 5 to 7 ft.
Wed night..NE winds 15 to 20 kt. Seas 5 to 7 ft.
Thu..NE winds 15 to 20 kt. Seas 5 to 7 ft.
Thu night..NE winds 10 to 15 kt. Seas 5 to 7 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 259 Pm Edt Sat Mar 23 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will persist through early Monday. Low pressure will cross the region Monday night followed by a strong cold front Tuesday. Another low pressure will develop off the southeast coast and will gradually move away through midweek. As the low departs, high pressure will build into the area and will prevail into next weekend.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will persist through early Monday. Low pressure will cross the region Monday night followed by a strong cold front Tuesday. Another low pressure will develop off the southeast coast and will gradually move away through midweek. As the low departs, high pressure will build into the area and will prevail into next weekend.
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 231947 afdchs area forecast discussion national weather service charleston sc 347 pm edt Sat mar 23 2019 Synopsis High pressure will persist through early Monday. Low pressure will cross the region Monday night followed by a strong cold front Tuesday. Another low pressure will develop off the southeast coast and will gradually move away through midweek. As the low departs, high pressure will build into the area and will prevail into next weekend. Near term until 6 am Sunday morning As of 340 pm: the center of sfc high pressure will build over the eastern carolinas late tonight. At the mid levels, the axis of a h5 ridge will ripple over the area by 9z Sunday. Sky will remain clear through late tonight, a few thin cirrus should arrive during the pre- dawn hours Sunday. The combination little to no cloud cover, calm winds, and wide dewpoint depressions will provide excellent radiational cooling conditions tonight. I will favor the cooler guidance for low temperatures, expecting temperatures between 40 to 45 degrees. Short term 6 am Sunday morning through Tuesday Sunday: high pressure will provide another dry day. Onshore flow will hold temps in the 60s on the beaches, but high in the mid upper 70s will be common away from the immediate coast. High level clouds will stream into the region from the west. Sunday night: atlantic high pressure will maintain rain-free conditions. By early Monday temperatures will bottom out around 50f inland and in the mid-upper 50s on the coast. Monday: atlantic high pressure will retreat from the region, and low pressure will approach the region from the west. The morning should remain rain-free. Then, ahead of the advancing shortwave trough aloft and associated surface low, warm conveyor belt moisture should spread into the region during the afternoon. Latest afternoon pops are graduated from chance inland to slight chance closer to the coast, with lowest pops across far southern counties. Monday night: the lead shortwave trough aloft and associated surface low will translate east across the region. Deep-layered forcing for ascent associated moisture will support scattered to numerous showers, with best precip coverage during the first half of the night. To address this scenario, evening pops range from likely north to chance south, then overnight pops settle back to 30-50 percent across the region. Also of note, Monday afternoon and Monday evening, showers could also be accompanied by isolated thunderstorms. However, model instability remains weak and appears unfavorable for any severe weather. Tuesday, the low pressure will push offshore, and a strong cold front will push through the region from north to south. This front will bring an abrupt wind shift to the northeast and will signal a rapid change to a below-normal temperature regime that will persist until late week. Also, persistent moisture within the associated baroclinic zone could support isolated scattered showers through Tuesday. |
Long term Tuesday night through Saturday Low pressure will develop off the coast Tuesday night Wednesday and will only gradually move away from the coast through Thursday. As a result, showers could remain over or close to the coast through midweek, and elevated northeast winds below-normal temps could persist through Thursday. The, building high pressure will help push temps into the upper 70s around 80 late next week into at least early next weekend. Aviation 20z Saturday through Thursday Vfr conditions will prevail at kchs and ksav through 18z Sunday. Extended aviation outlook: flight restrictions possible Monday night through Tuesday night. Marine Building high pressure will result in light east winds across the marine zones tonight. Seas will range from around 1 foot near shore to 3 feet across the outer ga waters. Sunday through Thursday night: on the periphery of atlantic high pressure, southeast winds will be enhanced by the sea breeze Sunday. Then, ahead of approaching low pressure, winds will turn to the south southwest Sunday night and Monday, and a few gusts could exceed 20 kt Monday Monday evening. Then, a strong cold front will cross the waters from north to south late Monday night into Tuesday, and winds will shift sharply to the northeast and will intensify. Then, due to the tightening gradient between high pressure building from the north and low pressure developing offshore, winds seas could easily reach small craft advisory levels most areas Tuesday through midweek, and gale force gusts could occur, especially beyond 20 nm. Tides coastal flooding Between strong high pressure building from the north and low pressure developing off the coast, strong northeast winds will create elevated tide levels along the coast Tuesday through Thursday. While astronomical factors do not favor tidal flooding, probabilistic guidance depicts a low chance for minor salt water flooding, especially Wednesday. We will continue to assess this scenario during the next several days. Equipment The kclx radar remains out of service. Repairs are expected to occur Monday. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... Ned short term... Spr long term... Spr aviation... Ned spr marine... Ned spr tides coastal flooding... Spr equipment... Spr |
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 | 35 min | E 11 G 13 | |||||
| 41033 | 37 mi | 57 min | SE 7.8 G 9.7 | 59°F | 60°F | 1024.2 hPa | ||
| 41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA | 45 mi | 75 min | ENE 14 G 16 | 62°F | 62°F | 3 ft | 1023.8 hPa (-0.3) | 49°F |
| SAXG1 - Sapelo Island Reserve, GA | 45 mi | 65 min | E 11 | 66°F | 1024 hPa (-1.0) | 49°F | ||
| ACXS1 - ACE Basin Reserve, SC | 47 mi | 80 min | S 2.9 | 62°F | 1024 hPa | 42°F |
Wind History for Fort Pulaski, GA
(wind in knots) EDIT (on/off) Help| 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | -12 PM | 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 | |
| Last 24hr | NW G21 | NW G14 | W G15 | W G9 | W G10 | W G10 | W G13 | NW | W | W | W | NW | NW | NW | N G8 | NE | E | E G19 | E | E G17 | E G16 | E | E | |
| 1 day ago | S G12 | SW G8 | W G19 | W G16 | W G20 | W | NW | W G17 | W G14 | W | W | W G15 | W | NW | NW | NW G15 | NW G16 | NW | NW | NW G16 | W | W | NW | W G15 |
| 2 days ago | E | SE G9 | NE G13 | NE G14 | NE | NE | NE | NE | NW | N | N | N | NW | N | NW | NW | SW | SW G8 | SW | W G10 | SW G9 | SW G13 | S G14 | S G14 |
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 | 2.1 hrs | ENE 9 | 10.00 mi | Fair | 67°F | 39°F | 37% | 1024 hPa |
| Savannah-Hilton Head International Airport, GA | 11 mi | 72 min | E 7 | 10.00 mi | A Few Clouds | 67°F | 36°F | 32% | 1023.9 hPa |
| Hilton Head Island, Hilton Head Airport, SC | 22 mi | 75 min | E 8 | 10.00 mi | Fair | 61°F | 39°F | 45% | 1024.7 hPa |
Wind History from SVN (wind in knots)
| 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 | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
| Last 24hr | W G18 | W | W | W | W | W | W | W | W | W | W | W | W | W | NW | N | N | NE | E | E | E | E | E | E |
| 1 day ago | W G18 | W G26 | W | W | W | W | W | W | W | W | W | W | W | W | W | NW | NW | NW | NW | W G14 | W G18 | W G18 | W G19 | |
| 2 days ago | NE | N | N | Calm | NE | NE | Calm | N | N | N | W | W | W | Calm | Calm | Calm | Calm | SW | W | SW | SW G16 | W G16 |
Tide / Current Tables for Thunderbolt, Wilmington River, Georgia
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataThunderbolt
Click for Map
Sat -- 05:00 AM EDT -1.54 feet Low Tide
Sat -- 07:24 AM EDT Sunrise
Sat -- 09:21 AM EDT Moonset
Sat -- 11:15 AM EDT 9.03 feet High Tide
Sat -- 05:13 PM EDT -1.18 feet Low Tide
Sat -- 07:37 PM EDT Sunset
Sat -- 10:42 PM EDT Moonrise
Sat -- 11:45 PM EDT 9.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 05:00 AM EDT -1.54 feet Low Tide
Sat -- 07:24 AM EDT Sunrise
Sat -- 09:21 AM EDT Moonset
Sat -- 11:15 AM EDT 9.03 feet High Tide
Sat -- 05:13 PM EDT -1.18 feet Low Tide
Sat -- 07:37 PM EDT Sunset
Sat -- 10:42 PM EDT Moonrise
Sat -- 11:45 PM EDT 9.33 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 |
| 8.9 | 7.2 | 4.6 | 1.8 | -0.6 | -1.5 | -0.8 | 1.2 | 3.8 | 6.3 | 8.2 | 9 | 8.7 | 7.2 | 5 | 2.4 | 0.1 | -1.1 | -0.7 | 0.9 | 3.3 | 5.8 | 7.8 | 9 |
Tide / Current Tables for Savannah River Entrance, Georgia Current
EDIT (on/off) Help One Week of DataSavannah River Entrance
Click for Map
Sat -- 03:02 AM EDT -2.80 knots Max Ebb
Sat -- 05:45 AM EDT 0.01 knots Slack
Sat -- 07:23 AM EDT Sunrise
Sat -- 08:18 AM EDT 2.61 knots Max Flood
Sat -- 09:20 AM EDT Moonset
Sat -- 11:53 AM EDT -0.00 knots Slack
Sat -- 03:07 PM EDT -2.51 knots Max Ebb
Sat -- 05:55 PM EDT 0.00 knots Slack
Sat -- 07:36 PM EDT Sunset
Sat -- 08:35 PM EDT 2.65 knots Max Flood
Sat -- 10:42 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 03:02 AM EDT -2.80 knots Max Ebb
Sat -- 05:45 AM EDT 0.01 knots Slack
Sat -- 07:23 AM EDT Sunrise
Sat -- 08:18 AM EDT 2.61 knots Max Flood
Sat -- 09:20 AM EDT Moonset
Sat -- 11:53 AM EDT -0.00 knots Slack
Sat -- 03:07 PM EDT -2.51 knots Max Ebb
Sat -- 05:55 PM EDT 0.00 knots Slack
Sat -- 07:36 PM EDT Sunset
Sat -- 08:35 PM EDT 2.65 knots Max Flood
Sat -- 10:42 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 |
| -0.6 | -1.8 | -2.5 | -2.8 | -2.5 | -1.3 | 0.4 | 1.9 | 2.6 | 2.5 | 1.9 | 1.1 | -0.1 | -1.4 | -2.2 | -2.5 | -2.3 | -1.4 | 0.1 | 1.6 | 2.5 | 2.6 | 2.2 | 1.5 |
Weather Map and Satellite Images
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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 (17,4,5,8)
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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. |