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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 6:57AM | Sunset 6:10PM | Wednesday February 20, 2019 6:26 PM EST (23:26 UTC) | Moonrise 7:34PM | Moonset 7:52AM | Illumination 98% |  |
AMZ330 Charleston Harbor- 322 Pm Est Wed Feb 20 2019
Tonight..S winds 5 to 10 kt. A chance of showers. Patchy fog this evening. Areas of fog after midnight.
Thu..SW winds 5 to 10 kt. A slight chance of showers. Areas of fog.
Thu night..SW winds 5 to 10 kt. A chance of showers. Areas of fog.
Fri..E winds 5 to 10 kt. Areas of fog in the morning. A chance of showers.
Fri night..NE winds 10 to 15 kt. A chance of showers.
Sat..NE winds 5 to 10 kt, becoming se in the afternoon. A chance of showers.
Sat night..S winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts to 20 kt after midnight. A slight chance of showers.
Sun..SW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
Sun night..NW winds 10 to 15 kt.
Mon..N winds 10 kt.
Mon night..NE winds 10 to 15 kt. A slight chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 56 degrees.
Tonight..S winds 5 to 10 kt. A chance of showers. Patchy fog this evening. Areas of fog after midnight.
Thu..SW winds 5 to 10 kt. A slight chance of showers. Areas of fog.
Thu night..SW winds 5 to 10 kt. A chance of showers. Areas of fog.
Fri..E winds 5 to 10 kt. Areas of fog in the morning. A chance of showers.
Fri night..NE winds 10 to 15 kt. A chance of showers.
Sat..NE winds 5 to 10 kt, becoming se in the afternoon. A chance of showers.
Sat night..S winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts to 20 kt after midnight. A slight chance of showers.
Sun..SW winds 15 to 20 kt. Waves 1 to 2 ft. A chance of showers.
Sun night..NW winds 10 to 15 kt.
Mon..N winds 10 kt.
Mon night..NE winds 10 to 15 kt. A slight chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 56 degrees.
AMZ300 322 Pm Est Wed Feb 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A warm front will lift north through the area tonight. A nearly stationary front will then meander in the vicinity through Saturday. A cold front will sweep through from the west late Sunday, followed by high pressure on Monday. A low pressure system could affect the area during the middle of next week.
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A warm front will lift north through the area tonight. A nearly stationary front will then meander in the vicinity through Saturday. A cold front will sweep through from the west late Sunday, followed by high pressure on Monday. A low pressure system could affect the area during the middle of next week.
7 Day Forecast for Marine Location Near Moncks Corner, SC
Hourly EDIT Helplocation: 33.1, -79.95 debug
Area Discussion for - Charleston, SC
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kchs 202053 afdchs area forecast discussion national weather service charleston sc 353 pm est Wed feb 20 2019 Synopsis A warm front will lift north through the area tonight. A nearly stationary front will then meander in the vicinity through Saturday. A cold front will sweep through from the west late Sunday, followed by high pressure on Monday. A low pressure system could affect the area during the middle of next week. Near term until 6 am Thursday morning The warm front will move inland during the evening hours, then quickly lift north of our area. Meanwhile, a cold front will be approaching our area, becoming located east of the southern appalachians towards daybreak Thursday. Showers will gradually decrease during the evening and overnight hours, becoming more limited to the immediate coast by daybreak Thursday. QPF should be minimal. Winds will gradually shift to the SE and then the s overnight. This will usher moisture in the form of much higher dew points into our area. Models are in great agreement showing areas of fog forming overnight, both on land and along the coastal waters moving onshore. There is some uncertainty regarding the timing. But the fog could become dense and we wouldn't be surprised if we have to eventually issue dense fog advisories. Temperatures will be somewhat tricky. The strong wedge will eventually yield to the warm front, allowing temperatures to warm up overnight and then maintain themselves. They should range from the lower 60s near the coast to the mid 50s inland. Short term 6 am Thursday morning through Saturday The forecast area will be in the warm sector on Thursday following the passage of a warm front earlier in the day. The highlight of the day will be temperatures. Although not expected to reach or exceed records, highs are forecast to be within a few degrees of those values generally in the upper 70s low 80s. Otherwise, there is some weak energy aloft that could help spur some showers inland, but overall the rain potential doesn't appear impressive. Kept pops limited to 20-30%. Thursday night, conditions appear favorable for fog development given the juicy airmass in place (surface dew points in the low 60s). On Friday, a wedge of high pressure will build down the mid-atlantic states, sending a backdoor cold front through the local area. This front will stall in the vicinity, then lift back north again as a warm front on Saturday. Upper level forcing is lacking, however given the boundary lingering nearby through late week, rain chances will remain in the forecast. Rainfall totals should not amount to much. Long term Saturday night through Wednesday A potent cold front will sweep through the area Sunday afternoon though only scattered showers are expected to accompany it. Strong warm air advection ahead of the front will produce high temps in the upper 70s on Sunday. Somewhat cooler weather is in store for Monday through Wednesday as a series of high pressure areas move into the area. A gulf low pressure system could bring some rain to the area Tuesday and Tuesday night. Aviation 21z Wednesday through Monday |
A warm front will move inland this evening, passing west of the terminals and causing moisture to increase. Ifr is expected to prevail, initially due to ceilings. Ceilings are expected to lower late this evening and overnight. Meanwhile, visibilities should lower as fog forms. Conditions should start to improve after daybreak Thursday, but ifr could linger until the end of the TAF period. Extended aviation outlook: restrictions in low ceilings and or reduced visibility likely Thursday night through Saturday. Marine Tonight: a warm front along the immediate coast in the evening will move onshore, then quickly lift north overnight. Winds will transition to the south and then southwest. Waves will continue to subside, so the small craft advisory should be allowed to expire for the charleston waters at the advertised time. However, seas will take longer to subside across the ga waters beyond 20 nm and that advisory will continue through the night. Sea fog: southerly winds late tonight will usher higher dew points into the area. This moisture moving over the cooler shelf waters could cause areas of dense fog to form and marine dense fog advisories may be needed. This threat will persist into Thursday and Thursday night. By midday Friday the winds will be northeast which is less favorable. Thursday through Monday: southerly winds on Thursday will become northeast late Friday as a backdoor cold front drops through the area. A tightened gradient across the charleston county waters could result in marginal SCA conditions for a short period Friday night. The aforementioned front will then lift back north Saturday, veering the winds to the south. More widespread SCA conditions are possible Sunday ahead of a cold front. Tides coastal flooding This evening's high tide is the lower of the two for the day. The wind direction is forecasted to shift towards the south and ease, but residual anomalies could allow the tide to briefly approach minor coastal flooding advisory criteria at charleston. Chs watches warnings advisories Ga... None. Sc... None. Marine... Small craft advisory until 1 pm est Thursday for amz374. Small craft advisory until midnight est tonight for amz350. Near term... short term... long term... Jrl aviation... marine... tides coastal flooding... |
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 | 22 mi | 57 min | NNW 4.1 G 5.1 | 56°F | 57°F | 1020.2 hPa | ||
| 41029 - Capers Nearshore (CAP 2) | 27 mi | 79 min | NE 3.9 G 5.8 | 56°F | 56°F | 1019 hPa | ||
| FBIS1 - Folly Island, SC | 29 mi | 87 min | N 6 G 8 | 56°F | 1020.6 hPa (-0.0) | 56°F | ||
| NIWS1 - North Inlet-Winyah Bay Reserve, SC | 44 mi | 162 min | NNW 5.1 | 55°F | 1020 hPa | 55°F | ||
| ACXS1 - ACE Basin Reserve, SC | 46 mi | 162 min | N 1.9 | 60°F | 1020 hPa | 59°F |
Wind History for Charleston, SC
(wind in knots) EDIT (on/off) Help| 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 | -12 PM | 4 PM | 5 PM | 6 PM | |
| Last 24hr | N G21 | NE G23 | NE G22 | N | NE G26 | NE G25 | NE G22 | NE G24 | NE G25 | NE G21 | NE G19 | W G10 | SE G5 | N G7 | N G8 | N G9 | NW | N G9 | NW | NW G9 | NW | NW G6 | NW | |
| 1 day ago | SW | W | NW | N | NW | N G10 | NE | NE | NE | NE G17 | NE G19 | NE G17 | N G19 | N G21 | N G16 | N | N G17 | N | N | N G16 | NE G19 | NE G24 | NE G24 | NE G23 |
| 2 days ago | NE | E G7 | E | SE | SE | S | SW G17 | SW G17 | SW G14 | SW | SW | SW | SW G8 | SW | N G8 | N | NW G6 | NW G7 | W G9 | NW G11 | W G10 | NW G7 | W | NE |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Moncks Corner Berkeley County, SC | 7 mi | 32 min | N 0 | 5.00 mi | Rain | 50°F | 50°F | 100% | 1021 hPa |
| Charleston, Charleston Air Force Base, SC | 14 mi | 31 min | N 5 | 3.00 mi | Light Rain Fog/Mist | 53°F | 51°F | 93% | 1020.4 hPa |
| Mount Pleasant Regional-Faison Field, SC | 17 mi | 32 min | NNW 3 | 5.00 mi | Fog/Mist | 55°F | 55°F | 100% | 1020.3 hPa |
| Summerville Airport, SC | 18 mi | 32 min | N 4 | 4.00 mi | Heavy Rain | 50°F | 48°F | 94% | 1021 hPa |
Wind History from MKS (wind in knots)
| 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 | 5 PM | 6 PM | |
| Last 24hr | NE G17 | NE G16 | NE | NE | NE | NE | NE | NE | NE | E | E | NE | NE | NE | NE | N | N | N | N | N | N | N | N | NE |
| 1 day ago | Calm | Calm | Calm | Calm | Calm | Calm | NE | NE | NE | NE | NE G16 | NE G18 | NE G16 | NE G17 | NE G14 | NE G15 | NE G14 | NE | NE | NE | NE G18 | NE | NE G18 | NE |
| 2 days ago | Calm | Calm | Calm | S | S | S | S G18 | SW | SW G17 | SW | SW | SW | N G19 | Calm | Calm | Calm | Calm | NW | NW | N | N | N | Calm | Calm |
Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataPimlico
Click for Map
Wed -- 06:05 AM EST -1.23 feet Low Tide
Wed -- 06:58 AM EST Sunrise
Wed -- 07:51 AM EST Moonset
Wed -- 11:49 AM EST 2.21 feet High Tide
Wed -- 06:09 PM EST Sunset
Wed -- 06:37 PM EST -0.94 feet Low Tide
Wed -- 07:34 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 06:05 AM EST -1.23 feet Low Tide
Wed -- 06:58 AM EST Sunrise
Wed -- 07:51 AM EST Moonset
Wed -- 11:49 AM EST 2.21 feet High Tide
Wed -- 06:09 PM EST Sunset
Wed -- 06:37 PM EST -0.94 feet Low Tide
Wed -- 07:34 PM EST 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 |
| 1.9 | 1.6 | 1 | 0.3 | -0.4 | -1 | -1.2 | -1 | -0.2 | 0.7 | 1.5 | 2.1 | 2.2 | 2 | 1.5 | 0.9 | 0.2 | -0.5 | -0.9 | -0.9 | -0.5 | 0.3 | 1.1 | 1.7 |
Tide / Current Tables for Charleston Harbor, off Fort Sumter, South Carolina Current (expired 1996-12-31)
EDIT (on/off) Help One Week of DataCharleston Harbor
Click for Map
Wed -- 02:56 AM EST 0.00 knots Slack
Wed -- 05:46 AM EST 3.23 knots Max Flood
Wed -- 06:57 AM EST Sunrise
Wed -- 07:50 AM EST Moonset
Wed -- 09:11 AM EST -0.00 knots Slack
Wed -- 12:16 PM EST -3.49 knots Max Ebb
Wed -- 03:34 PM EST 0.00 knots Slack
Wed -- 06:09 PM EST Sunset
Wed -- 06:14 PM EST 2.84 knots Max Flood
Wed -- 07:33 PM EST Moonrise
Wed -- 09:29 PM EST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 02:56 AM EST 0.00 knots Slack
Wed -- 05:46 AM EST 3.23 knots Max Flood
Wed -- 06:57 AM EST Sunrise
Wed -- 07:50 AM EST Moonset
Wed -- 09:11 AM EST -0.00 knots Slack
Wed -- 12:16 PM EST -3.49 knots Max Ebb
Wed -- 03:34 PM EST 0.00 knots Slack
Wed -- 06:09 PM EST Sunset
Wed -- 06:14 PM EST 2.84 knots Max Flood
Wed -- 07:33 PM EST Moonrise
Wed -- 09:29 PM EST -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 |
| -3.3 | -2.7 | -1.6 | 0.1 | 1.8 | 3 | 3.2 | 2.7 | 1.8 | 0.3 | -1.4 | -2.8 | -3.5 | -3.3 | -2.4 | -1 | 0.7 | 2.2 | 2.8 | 2.6 | 1.9 | 0.7 | -0.8 | -2.4 |
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 (18,4,5,8)
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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. |