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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 6:44AM | Sunset 8:02PM | Monday August 19, 2019 10:20 AM EDT (14:20 UTC) | Moonrise 9:33PM | Moonset 9:15AM | Illumination 84% |  |
AMZ330 Charleston Harbor- 711 Am Edt Mon Aug 19 2019
Today..S winds 5 to 10 kt. A slight chance of showers and tstms.
Tonight..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Tue..S winds 5 to 10 kt. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Tue night..S winds 5 to 10 kt. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Wed..SW winds 5 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. A chance of showers and tstms.
Wed night..S winds 10 to 15 kt with gusts to 20 kt, becoming sw 5 to 10 kt after midnight. A chance of showers and tstms.
Thu..SW winds 10 to 15 kt. A chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. A chance of showers and tstms.
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. 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..S winds 5 to 10 kt. A slight chance of showers and tstms.
Tonight..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Tue..S winds 5 to 10 kt. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Tue night..S winds 5 to 10 kt. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Wed..SW winds 5 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. A chance of showers and tstms.
Wed night..S winds 10 to 15 kt with gusts to 20 kt, becoming sw 5 to 10 kt after midnight. A chance of showers and tstms.
Thu..SW winds 10 to 15 kt. A chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. A chance of showers and tstms.
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. 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 711 Am Edt Mon Aug 19 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area.
7 Day Forecast for Marine Location Near Charleston, SC
Hourly EDIT Helplocation: 32.78, -79.93 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 191125 afdchs area forecast discussion national weather service charleston sc 725 am edt Mon aug 19 2019 Synopsis Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area. Near term through tonight As of 720 am: kclx detected isolated showers over the marine zones and extreme SE ga. Showers and thunderstorms should continue to increase across SE ga through this morning. The current forecast appears well in line with the recent radar trends. As of 315 am: near term guidance indicates that the h5 pattern will feature a ridge centered over the southern great plains and another ridge centered over the western atlantic, between nc and bermuda. A weakness or a weak h5 low should develop over ga sc today. At the sfc, a broad low is expected to form over southern ga. The circulation around the low should bring +2" pw north across the forecast area today. High temperatures are forecast to range from around 90s across the charleston tri- county to the upper 80s along the coast and SE ga. The afternoon environment should become unstable, with moderate CAPE values along and east of i-95. The coverage of showers and thunderstorms should be greater than what was seen on Sunday. In fact, numerous thunderstorms are expected across the ga zones this afternoon, closer to the sfc and mid-level low. The severe weather threat appears low given the deep moisture and high freezing level. However, areas that experience cell mergers could easily see localized rainfall totals >1" this afternoon. Tonight: convection is forecast to gradually dissipate during the evening hours, lingering the latest over the inland counties. Isolated showers and thunderstorms may persist over the marine zones through the night. Using a blend of mos, low temperatures are forecast to range from the low 70s inland to the upper 70s over the beaches. Short term Tuesday through Thursday Moderate confidence this period. Deep layer troughing will linger inland while high pressure persists offshore. It appears as though the best moisture and forcing will likely stay just west of the area at least through Wednesday but we'll continue to mention a chance of scattered showers and thunderstorms each day. Given the deep moisture and generally light low-mid level winds there will at least be a small risk of localized heavy rain flooding. Also can't completely rule out isolated severe storms each day but conditions |
aren't that favorable for much severe weather due to limited instability deep layer shear. Temperatures should be near to above normal. Long term Thursday night through Sunday Low to moderate confidence this period. The pattern doesn't change much until a cold front possibly moves near or even into the area this weekend and stalls into early next week keeping the weather more unsettled than normal. Not expecting much more than isolated severe storms flooding at this time. Temperatures should fall back closer to normal given the increased rain cloud coverage. Aviation 12z Monday through Friday Prior to the 12z tafs, IR satellite and sfc based observations indicated a ragged patch of ifr MVFR ceilings across SE ga. I will initialize the ksav TAF with bkn011 and will keep until 13z. Kchs is expected to remain north of the restrictive ceilings,VFR conditions forecast for this morning. The combination of deep moisture and steeper afternoon lapse rates should support scattered to numerous thunderstorms today. I will highlight the mid to late afternoon hours with a tempo for tsra at both sites. Cams indicate that ksav will see a greater chance for thunderstorms that kchs. Convection should dissipate within an hour or two of sunset. Extended aviation outlook: periodic restrictions at kchs ksav through sat, mainly from afternoon evening showers and thunderstorms. Marine The surface pattern will support steady south winds between 10-15 kts today and tonight. Wave heights are forecast to range between 1- 3 ft. Isolated to scattered thunderstorms are expected over the waters today and tonight. The coverage should peak this afternoon within 10 nm of shore. Tuesday through Saturday: atlantic high pressure and an inland trough will result in mainly south southwest winds around 15 knots or less through the period. No significant marine impacts are expected other than some stronger storms from time to time. Chs watches warnings advisories Ga... None. Sc... None. Marine... None. Near term... Ned short term... Rjb long term... Rjb aviation... Ned rjb marine... Ned rjb |
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 |
| CHTS1 | 0 mi | 50 min | WNW 2.9 G 4.1 | 81°F | 85°F | 1019.4 hPa | ||
| FBIS1 - Folly Island, SC | 7 mi | 80 min | W 2.9 G 5.1 | 79°F | 1019.7 hPa (+1.8) | 74°F | ||
| 41029 - Capers Nearshore (CAP 2) | 16 mi | 72 min | WNW 9.7 G 12 | 80°F | 84°F | 1019.3 hPa | ||
| ACXS1 - ACE Basin Reserve, SC | 32 mi | 95 min | Calm | 80°F | 1019 hPa | 75°F | ||
| 41033 | 43 mi | 72 min | WNW 5.8 G 7.8 | 81°F | 84°F | 1018.9 hPa | ||
| 41004 - EDISTO - 41 NM Southeast of Charleston, SC | 48 mi | 40 min | SW 7.8 G 9.7 | 81°F | 82°F | 1019.3 hPa | 78°F |
Wind History for Charleston, SC
(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 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 | NW | SW | SW | S |
| 1 day ago | SW | SW | S G12 | S G13 | SW G16 | SW G13 | SW G11 | W G10 | NW G12 | W G7 | SW G9 | SW G13 | SW | SW G10 | SW | SW | W | SW G8 | SW G10 | SW G9 | W G9 | SW G9 | SW G8 | W G10 |
| 2 days ago | S | SW G11 | SW | SW G11 | S G15 | SW G12 | SW G14 | S G14 | S G13 | S G13 | SW G13 | SW G13 | S G12 | SW G11 | SW G13 | S G10 | S G9 | SW G7 | S G10 | S G11 | S | S G14 | S G12 | S |
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 | 7 mi | 25 min | N 0 | 9.00 mi | Fair | 84°F | 75°F | 74% | 1019.6 hPa |
| Charleston, Charleston Air Force Base, SC | 10 mi | 84 min | W 4 | 10.00 mi | Partly Cloudy | 78°F | 73°F | 85% | 1019.2 hPa |
| Mount Pleasant Regional-Faison Field, SC | 11 mi | 25 min | N 0 | 7.00 mi | Mostly Cloudy | 82°F | 75°F | 79% | 1019.3 hPa |
Link to 5 minute data for KJZI
Wind History from JZI (wind in knots)
| 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 | W | W | W | S | SW | S | SW | G12 | S | S | S G13 | SW | SW | Calm | SW | Calm | Calm | W | Calm | Calm | Calm | SW | W |
| 1 day ago | G15 | S | S | S | SW G18 | SW | SW | SW | W | W | SW | S | SW | SW | SW | SW G11 | SW | Calm | SW | SW | SW | SW | Calm | W |
| 2 days ago | Calm | S G13 | S | S G15 | SW | S | S G19 | S | S | S | S | S | S | SW | S | S G15 | S | S | S | S | S | S | S | S |
Tide / Current Tables for Charleston, South Carolina
EDIT Weekend mode (on/off) (on/off) Help One Week of DataCharleston
Click for Map
Mon -- 05:04 AM EDT 0.53 feet Low Tide
Mon -- 06:45 AM EDT Sunrise
Mon -- 10:15 AM EDT Moonset
Mon -- 11:03 AM EDT 5.23 feet High Tide
Mon -- 05:13 PM EDT 0.82 feet Low Tide
Mon -- 08:00 PM EDT Sunset
Mon -- 10:32 PM EDT Moonrise
Mon -- 11:19 PM EDT 5.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 05:04 AM EDT 0.53 feet Low Tide
Mon -- 06:45 AM EDT Sunrise
Mon -- 10:15 AM EDT Moonset
Mon -- 11:03 AM EDT 5.23 feet High Tide
Mon -- 05:13 PM EDT 0.82 feet Low Tide
Mon -- 08:00 PM EDT Sunset
Mon -- 10:32 PM EDT Moonrise
Mon -- 11:19 PM EDT 5.34 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 |
| 5.2 | 4.3 | 3.1 | 1.9 | 0.9 | 0.5 | 0.9 | 1.9 | 3.2 | 4.3 | 5 | 5.2 | 5 | 4.3 | 3.2 | 2.1 | 1.3 | 0.8 | 1 | 1.9 | 3.1 | 4.2 | 5 | 5.3 |
Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
EDIT (on/off) Help One Week of DataCharleston Harbor Entrance
Click for Map
Mon -- 02:35 AM EDT -2.17 knots Max Ebb
Mon -- 05:43 AM EDT 0.00 knots Slack
Mon -- 06:45 AM EDT Sunrise
Mon -- 08:10 AM EDT 1.54 knots Max Flood
Mon -- 10:14 AM EDT Moonset
Mon -- 11:37 AM EDT -0.00 knots Slack
Mon -- 02:50 PM EDT -1.92 knots Max Ebb
Mon -- 05:56 PM EDT 0.00 knots Slack
Mon -- 08:00 PM EDT Sunset
Mon -- 08:30 PM EDT 1.44 knots Max Flood
Mon -- 10:32 PM EDT Moonrise
Mon -- 11:50 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:35 AM EDT -2.17 knots Max Ebb
Mon -- 05:43 AM EDT 0.00 knots Slack
Mon -- 06:45 AM EDT Sunrise
Mon -- 08:10 AM EDT 1.54 knots Max Flood
Mon -- 10:14 AM EDT Moonset
Mon -- 11:37 AM EDT -0.00 knots Slack
Mon -- 02:50 PM EDT -1.92 knots Max Ebb
Mon -- 05:56 PM EDT 0.00 knots Slack
Mon -- 08:00 PM EDT Sunset
Mon -- 08:30 PM EDT 1.44 knots Max Flood
Mon -- 10:32 PM EDT Moonrise
Mon -- 11:50 PM EDT -0.00 knots Slack
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 |
| -0.7 | -1.5 | -2.1 | -2.1 | -1.6 | -0.7 | 0.2 | 1.1 | 1.5 | 1.4 | 0.9 | 0.4 | -0.3 | -1.2 | -1.8 | -1.9 | -1.6 | -0.8 | 0 | 0.8 | 1.4 | 1.4 | 0.9 | 0.5 |
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 (10,2,3,4)
(on/off) Help
Ground Weather Radar Station Charleston, SC
(on/off) Help
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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. |