Sunday, February23, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Sullivan's Island, SC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:53AMSunset 6:12PM Sunday February 23, 2020 1:31 AM EST (06:31 UTC) Moonrise 7:12AMMoonset 6:19PM Illumination 0% Phase: New Moon; Moon at 29 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
AMZ330 Charleston Harbor- 1251 Am Est Sun Feb 23 2020
Tonight..Variable winds less than 5 kt.
Sun..NE winds 5 to 10 kt, becoming E in the afternoon.
Sun night..E winds 5 kt. A slight chance of showers after midnight.
Mon..E winds 5 to 10 kt. A chance of showers.
Mon night..S winds 10 kt. Showers.
Tue..SW winds 15 kt with gusts to 20 kt. Showers.
Tue night..SW winds 10 kt. Showers likely.
Wed..SW winds 10 to 15 kt. Showers likely.
Wed night..W winds 15 to 20 kt. Waves 1 to 2 ft. A slight chance of showers.
Thu..W winds 15 to 20 kt. Waves 1 to 2 ft.
Thu night..NW winds 15 to 20 kt. Waves 1 to 2 ft. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 54 degrees.
AMZ300 1251 Am Est Sun Feb 23 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will persist through Sunday. A warm front will lift north of the region on Monday, followed by a pair of cold fronts during the middle of next week. High pressure returns late next week.


7 Day Forecast for Marine Location Near Sullivan's Island, SC
   Hourly   EDIT   Help
location: 32.77, -79.91     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS62 KCHS 230555 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 1255 AM EST Sun Feb 23 2020

SYNOPSIS. High pressure will persist through Sunday. A warm front will lift north of the region on Monday, followed by a pair of cold fronts during the middle of next week. High pressure returns late next week.

NEAR TERM /UNTIL 6 AM THIS MORNING/. Forecast on track for the midnight update, only very minor adjustments to hourly temps/dew points curves across the forecast area.

High pressure will become centered directly overhead tonight with a fast, subtropical jet streaming across the Southeast States. Calm winds will prevail within a decoupled boundary layer. This should help promote solid radiational cooling for much of the night with temperatures dropping off quickly after sunset. Some degree of jet enhanced cirrus will propagate in from the northwest through daybreak, but this looks to remain fairly thin and is not expected to interrupt the radiative process too much. Lows from the upper 20s inland with lower-mid 40s at the beaches look on track.

SHORT TERM /6 AM THIS MORNING THROUGH TUESDAY/. Sunday: Northwest flow in the mid-levels in the morning will gradually shift to west by the overnight period. At the surface, weak high pressure over the region in the morning will shift offshore, while weak troughing forms offshore during the evening and overnight hours. Additionally, a storm system should approach from the distant west late. Though, it's not expected to reach our area during the nighttime period. Moisture and lift increase along the coastal trough and in advance of the front. Models indicate some light showers in both of these locations, mainly late at night. We're expecting minimal QPF, so we only have slight chance POPs. Temperatures should be near normal during the day and slightly above normal at night due to increasing clouds.

Monday and Tuesday: Westerly flow in the mid-levels Monday morning will gradually shift to the SW as long wave troughing strengthens/amplifies over the Central U.S. A the surface, a warm front is forecasted to move north through our area during the day, continuing it's northward march away from our area Monday night. A cold front will approach our area on Tuesday, with a second, front not too far behind it. The first front may push through our area Tuesday afternoon, with the second one remaining just to our west, but continuing to approach us. Plenty of moisture will be ushered into our area from the Gulf of Mexico, with a band of PWATs forecasted to reach ~1.5" Tuesday. There appears to be decent lift associated with the front. In fact, all of the models are in good agreement showing widespread showers over our area Monday night into Tuesday. We raised POPs to account for this. We also nudged the QPF up in some spots. Despite cloudy skies, warm advection will allow for temperatures to be within a few degrees of normal.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/. A broad and highly amplified mid and upper trough over the central states will remain across much of the eastern half of the nation the second part of the week. A cold front that gets hung up as it becomes parallel to the flow aloft, remains nearby mid week, before a stronger secondary front sweeps through Wednesday night. High pressure will build in for late in the week. It'll remain warm but rather unsettled until the passage of the second front, followed by significantly colder and breezy to windy weather thereafter. A Lake Wind Advisory looks likely across Lake Moultrie for much of the latter half of the week. The end of the month certainly could experience yet another freeze across at least far inland locations.

AVIATION /06Z SUNDAY THROUGH THURSDAY/. VFR through 24/06Z at both KSAV/KCHS.

Extended Aviation Outlook: A pair of cold fronts could bring flight restrictions Monday through Wednesday with the next round of wet weather.

MARINE. Overnight: NE winds will continue across the marine zones tonight as high pressure remains across the waters. Seas are forecast to range between 2-3 ft within 20 NM from shore, with 4-6 ft beyond 20 NM. Small Craft Advisory will remain in effect for the outer GA waters overnight to highlight the seas.

Sunday: High pressure will prevail, bringing winds 10 kt or less. A Small Craft Advisory should be in effect for the GA waters beyond 20 nm in the morning due to seas ~6 ft. The advisory is expected to expire by the afternoon as seas subside.

Monday through Thursday: High pressure in the Atlantic will move away on Monday. Meanwhile, a warm front will lift north of the area through Monday night. A pair of cold fronts are expected to move through the region during the middle of the week. Behind these fronts, strong high pressure builds from the west on Thursday. Small Craft Advisories are possible for winds and seas Monday night through Tuesday, mainly for the GA waters beyond 20 nm. By Wednesday, Small Craft Advisories will probably be needed for all of the waters. There is even the potential for Gales over parts of the coastal waters.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory until 4 PM EST this afternoon for AMZ374.

NEAR TERM . 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 TempWater Temp WavesPressureDewPt
CHTS1 1 mi44 min WNW 1 G 1.9 43°F 55°F1027.9 hPa
FBIS1 - Folly Island, SC 6 mi32 min NW 2.9 G 4.1 41°F 1027.9 hPa (-1.0)40°F
41029 - Capers Nearshore (CAP 2) 15 mi24 min NE 5.8 G 7.8 47°F 52°F1028.8 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi47 min Calm 35°F 1028 hPa35°F
41033 43 mi24 min NE 5.8 G 7.8 49°F 54°F1028.7 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 47 mi22 min 7.8 G 14 71°F1026.9 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
Last
24hr
N11
G16
N6
G9
N6
G16
NW8
G11
NW9
N10
G14
NW7
G11
NW5
G10
NW8
G11
NW6
G10
N5
G8
S2
NW1
SE7
S2
G10
E7
NE5
NE3
N3
N2
NW3
NW3
NW1
NW2
1 day
ago
N15
G22
N13
G20
N13
G21
N11
G20
N21
G26
N21
G27
N15
G24
N19
G25
N21
G28
N14
G20
N18
G23
NW11
G16
N11
G18
N16
G20
N16
G22
N13
G18
N11
G17
N13
G18
N11
G15
N15
N13
G18
N15
NE12
G16
N13
G16
2 days
ago
N11
G14
N10
G13
N11
G14
N7
G13
N8
G11
N9
G15
N15
G19
N14
G19
N14
G17
N11
G17
N13
G17
NW8
G16
N10
G16
N11
G17
N13
G19
N21
N16
G23
N12
G21
N11
G18
N17
G24
N16
G26

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi37 minN 010.00 miFair32°F30°F93%1027.8 hPa
Mount Pleasant Regional-Faison Field, SC11 mi37 minN 010.00 miPartly Cloudy32°F32°F100%1027.8 hPa
Charleston, Charleston Air Force Base, SC12 mi96 minN 010.00 miFair36°F28°F76%1027.9 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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
-12
PM
1
AM
Last 24hrN7N8N5N5NW6N6N8N8N9N9N8CalmCalmE6E7E5CalmCalm----Calm--CalmCalm
1 day agoN13
G21
N13
G18
N11
G20
N14N15
G23
N20
G29
N20
G27
N17
G24
N14N18
G23
N14
G25
N13
G24
NW12
G21
N14N11
G18
N10N12
G18
N10N13N12N11N9N6NE10
2 days agoN7
G13
N11N8N9N9N8
G14
N8N10N12N8
G15
N11
G17
N13
G18
N14N15N15N13
G21
N12
G23
N13
G24
N14
G19
N12N12
G20
N13
G20
N16
G24
N18

Tide / Current Tables for Charleston, South Carolina
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Charleston
Click for Map
Sun -- 01:32 AM EST     -0.24 feet Low Tide
Sun -- 06:54 AM EST     Sunrise
Sun -- 07:12 AM EST     Moonrise
Sun -- 08:01 AM EST     5.56 feet High Tide
Sun -- 10:33 AM EST     New Moon
Sun -- 02:02 PM EST     -0.04 feet Low Tide
Sun -- 06:11 PM EST     Sunset
Sun -- 06:19 PM EST     Moonset
Sun -- 08:08 PM EST     4.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.7-0.1-0.10.61.83.24.35.25.65.24.331.60.4-00.41.42.63.74.654.73.92.8

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
   EDIT      (on/off)   Help   One Week of Data
Charleston Harbor Entrance
Click for Map
Sun -- 02:11 AM EST     0.00 knots Slack
Sun -- 04:40 AM EST     1.55 knots Max Flood
Sun -- 06:54 AM EST     Sunrise
Sun -- 07:11 AM EST     Moonrise
Sun -- 08:29 AM EST     -0.00 knots Slack
Sun -- 10:33 AM EST     New Moon
Sun -- 11:34 AM EST     -2.51 knots Max Ebb
Sun -- 02:35 PM EST     0.00 knots Slack
Sun -- 04:45 PM EST     1.58 knots Max Flood
Sun -- 06:11 PM EST     Sunset
Sun -- 06:19 PM EST     Moonset
Sun -- 08:31 PM EST     -0.00 knots Slack
Sun -- 11:47 PM EST     -2.25 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
-2-1.2-0.20.91.51.51.51.20.5-0.6-1.6-2.4-2.4-1.8-0.70.51.41.61.41.10.5-0.5-1.4-2

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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 (1,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Charleston, SC
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.