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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 6:45AM | Sunset 7:59PM | Wednesday August 21, 2019 7:20 AM EDT (11:20 UTC) | Moonrise 10:36PM | Moonset 11:05AM | Illumination 67% |  |
AMZ330 Charleston Harbor- 646 Am Edt Wed Aug 21 2019
Today..SW winds 5 to 10 kt, becoming S 10 to 15 kt this afternoon. A slight chance of showers and tstms this afternoon.
Tonight..SW winds 10 to 15 kt, decreasing to 5 to 10 kt.
Thu..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Thu night..S winds 10 to 15 kt with gusts to 20 kt, becoming sw 5 to 10 kt after midnight. 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. A chance of showers and tstms.
Fri night..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. A chance of showers and tstms.
Sun..E winds 5 to 10 kt. Showers and tstms likely.
Sun night..E winds 5 to 10 kt. A chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
Today..SW winds 5 to 10 kt, becoming S 10 to 15 kt this afternoon. A slight chance of showers and tstms this afternoon.
Tonight..SW winds 10 to 15 kt, decreasing to 5 to 10 kt.
Thu..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Thu night..S winds 10 to 15 kt with gusts to 20 kt, becoming sw 5 to 10 kt after midnight. 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. A chance of showers and tstms.
Fri night..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat night..S winds 5 to 10 kt. A chance of showers and tstms.
Sun..E winds 5 to 10 kt. Showers and tstms likely.
Sun night..E winds 5 to 10 kt. A chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
AMZ300 646 Am Edt Wed Aug 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail through late week. A cold front will then push into the area this weekend before stalling over or just south of the area through early next week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail through late week. A cold front will then push into the area this weekend before stalling over or just south of the area through early next week.
7 Day Forecast for Marine Location Near Meggett, SC
Hourly EDIT Helplocation: 32.7, -80.28 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 211043 afdchs area forecast discussion national weather service charleston sc 643 am edt Wed aug 21 2019 Synopsis Atlantic high pressure and an inland trough will prevail through late week. A cold front will then push into the area this weekend before stalling over or just south of the area through early next week. Near term through tonight Today: deep layered ridging will remain persistent from the western atlantic southward into florida. A weak mid level vort lobe will drift over our region today but provide little if any impetus to enhance convection. Instead, sufficiently deep moisture and typical sea breeze boundary interactions should result in scattered mainly pulse-type convection later today. We have pops in the 30-40 percent range along with highs in the lower 90s many areas. Instability parameters do not stand out from our typical mid late august pulse regime expectations and severe convection is not anticipated. Tonight: diurnal evening convection is expected to diminish after sunset with isolated showers and tstms possible overnight with chances generally well below 20 percent. A weak southwest synoptic flow will persist in the boundary layer and this should preclude any chances for low clouds or fog and result in yet another warm night with lows in the mid upper 70s many areas. Short term Thursday through Saturday Moderate to high confidence this period. Surface troughing inland and high pressure offshore will persist keeping the weather rather typical for this time of year. Rain chances will be mostly confined to the afternoon evening with a low chance of severe storms. Probably the slightly greater risk is for heavy rainfall and flooding given the deep moisture and generally light low-mid level winds. Temperatures should stay above normal with heat indices peaking in the low to mid 100s each afternoon for most areas away from the beaches. Long term Saturday night through Tuesday Low confidence this period. The pattern doesn't change much until a cold front likely pushes into the area this weekend, probably starting Saturday night, before stalling over or near the area into the middle of next week. Rain chances should end up being above normal but confidence is lower regarding temperatures as much depends on the location of the front and rain cloud coverage. |
Probably the biggest issue this period will be periods of heavy rain which could cause some flooding, especially near the coast early next week when astronomical tides will already be higher than normal. Aviation 12z Wednesday through Sunday Vfr. Afternoon showers tstms will once again develop near the terminals this afternoon. Latest models suggest ksav has a bit greater chance of coverage than at kchs and we maintained vcts at ksav. At kchs, thunder is also certainty possible, however timing and propagation factors suggest an tsra inclusions may be better placed by the 18z cycle. Extended aviation outlook: periodic restrictions at kchs ksav each day through Saturday, mainly from afternoon evening showers and thunderstorms. More significant restrictions are likely this weekend into early next week due to increased moisture rain coverage along with a nearby cold front. Marine High pressure offshore will maintain a south to southwest flow over the local waters through tonight. This diurnal setup should produce typical warm season results, the flow increasing to near 15 kt after mid afternoon into the evening hours, then tending to ebb later tonight. Seas will continue in the 1-3 ft range. Thursday through Monday: atlantic high pressure and an inland trough will result in mainly south southwest winds around 15 knots or less through the period until a cold front likely moves into and possibly through the waters late in the weekend. The strongest winds will likely occur near the sc coast, including charleston harbor, where the best pressure gradient should set up. Seas will likely stay 4 feet or less, although there is more uncertainty early next week as much depends on the strength of the winds. 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 |
| ACXS1 - ACE Basin Reserve, SC | 13 mi | 96 min | Calm | 78°F | 1019 hPa | 77°F | ||
| CHTS1 | 20 mi | 51 min | WSW 4.1 G 5.1 | 81°F | 85°F | 1019.3 hPa | ||
| FBIS1 - Folly Island, SC | 21 mi | 81 min | W 2.9 G 2.9 | 80°F | 1019.4 hPa (+0.0) | 77°F | ||
| 41033 | 30 mi | 73 min | W 9.7 G 14 | 82°F | 85°F | 1019.1 hPa | ||
| 41029 - Capers Nearshore (CAP 2) | 35 mi | 73 min | W 9.7 G 14 | 83°F | 84°F | 1019.1 hPa | ||
| FPKG1 - 8670870 - Fort Pulaski, GA | 57 mi | 57 min | WSW 1.9 G 1.9 | 80°F | 84°F | 1019.7 hPa |
Wind History for Charleston, SC
(wind in knots) EDIT (on/off) Help| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | SW | S | S G7 | S G8 | S | S G11 | S | SE | S | S | SE G12 | S G15 | S | S | S G12 | S | S | S | S | S G9 | W | SW | W | W |
| 1 day ago | NW | SW | SW | S | S | S G10 | S | S | S G13 | S G16 | S G14 | S G11 | S G12 | S G9 | SW | SW | S | SW G8 | SW | S G9 | S | SW | SW | |
| 2 days ago | W G9 | SW G9 | SW G8 | W G10 | W G11 | NW G9 | W G8 | SW | S | SW G10 | S G11 | S | S G10 | S G9 | S | SW G9 | SW G8 | SW G6 | SW | W | SW | SW | W | W G6 |
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 |
| Charleston Executive Airport, SC | 15 mi | 26 min | N 0 | 9.00 mi | Fair | 77°F | 75°F | 94% | 1019.3 hPa |
| Charleston, Charleston Air Force Base, SC | 20 mi | 25 min | WSW 3 | 10.00 mi | A Few Clouds | 77°F | 75°F | 94% | 1019.2 hPa |
| Walterboro Lowcountry Regional Airport, SC | 24 mi | 26 min | SSW 3 | 7.00 mi | Mostly Cloudy | 73°F | 73°F | 100% | 1019.6 hPa |
Link to 5 minute data for KJZI
Wind History from JZI (wind in knots)
| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | Calm | Calm | S | S | S | SE | S | S | S | S | S | S | S | SW | Calm | Calm | Calm | |||||||
| 1 day ago | Calm | SW | W | Calm | S | SE | S | S | S | S | S | S | S | Calm | S | Calm | Calm | Calm | ||||||
| 2 days ago | SW | Calm | W | W | W | W | W | S | SW | SW | S | G12 | S | S | S G13 | SW | SW | Calm | SW | Calm | Calm | Calm |
Tide / Current Tables for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
EDIT Weekend mode (on/off) (on/off) Help One Week of DataLower Toogoodoo Creek
Click for Map
Wed -- 01:18 AM EDT 6.64 feet High Tide
Wed -- 06:48 AM EDT Sunrise
Wed -- 07:05 AM EDT 0.93 feet Low Tide
Wed -- 12:05 PM EDT Moonset
Wed -- 01:46 PM EDT 6.83 feet High Tide
Wed -- 07:26 PM EDT 1.57 feet Low Tide
Wed -- 07:59 PM EDT Sunset
Wed -- 11:35 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:18 AM EDT 6.64 feet High Tide
Wed -- 06:48 AM EDT Sunrise
Wed -- 07:05 AM EDT 0.93 feet Low Tide
Wed -- 12:05 PM EDT Moonset
Wed -- 01:46 PM EDT 6.83 feet High Tide
Wed -- 07:26 PM EDT 1.57 feet Low Tide
Wed -- 07:59 PM EDT Sunset
Wed -- 11:35 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 |
| 6.3 | 6.6 | 6.5 | 5.6 | 4.2 | 2.7 | 1.5 | 0.9 | 1.2 | 2.2 | 3.6 | 5 | 6.1 | 6.7 | 6.8 | 6.3 | 5.1 | 3.6 | 2.3 | 1.6 | 1.7 | 2.3 | 3.4 | 4.6 |
Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
EDIT (on/off) Help One Week of DataCharleston Harbor Entrance
Click for Map
Wed -- 12:24 AM EDT -0.00 knots Slack
Wed -- 03:46 AM EDT -1.89 knots Max Ebb
Wed -- 06:46 AM EDT Sunrise
Wed -- 06:56 AM EDT 0.00 knots Slack
Wed -- 09:39 AM EDT 1.46 knots Max Flood
Wed -- 12:04 PM EDT Moonset
Wed -- 01:01 PM EDT -0.00 knots Slack
Wed -- 04:16 PM EDT -1.78 knots Max Ebb
Wed -- 07:28 PM EDT 0.00 knots Slack
Wed -- 07:57 PM EDT Sunset
Wed -- 10:01 PM EDT 1.26 knots Max Flood
Wed -- 11:33 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:24 AM EDT -0.00 knots Slack
Wed -- 03:46 AM EDT -1.89 knots Max Ebb
Wed -- 06:46 AM EDT Sunrise
Wed -- 06:56 AM EDT 0.00 knots Slack
Wed -- 09:39 AM EDT 1.46 knots Max Flood
Wed -- 12:04 PM EDT Moonset
Wed -- 01:01 PM EDT -0.00 knots Slack
Wed -- 04:16 PM EDT -1.78 knots Max Ebb
Wed -- 07:28 PM EDT 0.00 knots Slack
Wed -- 07:57 PM EDT Sunset
Wed -- 10:01 PM EDT 1.26 knots Max Flood
Wed -- 11:33 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 |
| 0.2 | -0.4 | -1.2 | -1.8 | -1.9 | -1.5 | -0.8 | 0 | 0.8 | 1.3 | 1.4 | 1 | 0.6 | 0 | -0.8 | -1.4 | -1.8 | -1.7 | -1.1 | -0.3 | 0.4 | 1 | 1.3 | 1 |
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Charleston, SC (7,2,3,4)
(on/off) Help
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. |