Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Charleston, SC

Version 3.4
What's New / NOTES
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 7:20AMSunset 7:32PM Thursday March 21, 2019 7:40 AM EDT (11:40 UTC) Moonrise 7:27PMMoonset 7:01AM Illumination 100% Phase: Full Moon; Moon at 15 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- 727 Am Edt Thu Mar 21 2019
Today..W winds 5 to 10 kt, increasing to sw 10 to 15 kt.
Tonight..SW winds 10 to 15 kt, becoming nw after midnight.
Fri..W winds 10 to 15 kt.
Fri night..W winds 10 to 15 kt, becoming nw after midnight.
Sat..N winds 5 to 10 kt.
Sat night..Variable winds 5 kt.
Sun..SE winds 5 kt.
Sun night..S winds 5 kt.
Mon..SW winds 5 to 10 kt. A slight chance of showers.
Mon night..SW winds 10 kt. A chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 60 degrees.
AMZ300 727 Am Edt Thu Mar 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A cold front will move into the region from the west late today and then offshore tonight. High pressure will then build into the region and persist through the weekend. Low pressure may move through the southeast on Tuesday.


7 Day Forecast for Marine Location Near Charleston, SC
   Hourly   EDIT   Help
location: 32.78, -79.93     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 210908
afdchs
area forecast discussion
national weather service charleston sc
508 am edt Thu mar 21 2019

Synopsis
A cold front will move into the region from the west late today
and then offshore tonight. High pressure will then build into
the region and persist through the weekend. Low pressure may
move through the southeast on Tuesday.

Near term through tonight
Pre-dawn: low clouds have been slow to diminish across sc early
this morning despite wnw boundary layer flow. Latest satellite
imagery shows the drying process of downslope beginning to decay
clouds west of walterboro and hampton but the charleston tri-county
area may have to wait until around sunrise to see some clearing
trends to occur. Skies remain mainly clear in ga and inland areas
to the west of i-95 will see upper 30s.

Today: a complex mid upper level trough will swing through the
southeast states today. All of the significant moisture will head
away from the region to the north as surface low pressure lifts
north along the mid atlantic coast. A dry cold front is expected
to race into the i-95 corridor by late day. This morning we expect
the low clouds across sc to scour out by mid morning with mostly
sunny skies across the region from late morning onward. Southwest
to west winds are expected to increase along and ahead of the
cold front this afternoon with a brief period of 15-25 mph breezes
likely, especially across southeast ga and coastal sc.

Tonight: the cold front is expected to move offshore by early
evening with the atmosphere too dry to expect any brief showers
across northern sc zones. There should be a brief period of mid
clouds then skies will become mostly clear. Low will be in the
40-45 degree range and most all areas are expected to maintain
a light wnw breeze overnight.

Short term Friday through Sunday
Strong continental high pressure centered over the plains states
Friday will move just north of the southeast region Saturday, then
offshore by late Sunday. It will bring our area dry conditions with
mostly clear skies. Temperatures will be within a few degrees of
normal.

Long term Sunday night through Wednesday
High pressure will move offshore Sunday night. A coastal trough is
expected to form Monday while a storm system approaches from the
west. Models show the system moving through Monday night, then
perhaps stalling along or just off our coast through Wednesday while
high pressure prevails inland and to our north. Though, there
remains uncertainty over the timing, strength, and the track of this
system.

Aviation 08z Thursday through Monday
Kchs: considerable moisture will remain trapped in place
through the night, with a sharp inversion to hold until late to
the southwest of low pressure off the upper south carolina and
north carolina coast. This will result in ifr or MVFR ceilings,
before winds shift to offshore and dry things out for Thursday
asVFR returns. Gusty w-sw will prevail through the afternoon as
deep mixing commences.

Ksav:VFR, gusty west winds this afternoon.

Extended aviation:VFR through Sunday. There are low probabilities
of flight restrictions due to an approaching storm system on Monday.

Marine
Lighter offshore flow was tending to diminish sea heights near
shore and we have lowered the SCA in sc waters early this
morning. Offshore flow will back to southwest this afternoon
becoming shifting west in the wake of a cold front late in the
day ga coast and sc coast early this evening. We may need to
issue a SCA later today for jetting and surging offshore flow
in the wake of the cold front tonight over near-shore coastal
waters. Over the 20-60 nm ga waters, SCA conditions will persist
into Friday morning with elevated seas today and then surging
offshore flow tonight.

Extended marine: high pressure will prevail across the region
through the weekend. Low pressure may move through the southeast on
Monday.

Rip currents: we have a moderate risk for rip currents for today
as lingering 2-3 ft swell energy which should slowly subside
with time.

Fire weather
A dry cold front will move into southeast ga this afternoon. Winds
are expected to become gusty with 20-23 kt gusts forecast for at
least 2-3 hours. In addition, rh values will fall to near critical
values. Fuels in this region are the lowest in our forecast area,
but values appear marginal. Per collaboration with SPC fire weather,
all of southeast ga in an elevated potential for fire danger this
afternoon. We have issued a fire danger statement for this region
for anticipated afternoon conditions.

Friday: rh values as low as 25-30 percent and elevated offshore
winds could also cause fire concerns, especially if partners
report low fuel moisture.

Tides coastal flooding
We have issued a coastal flood advisory for the sc ga coast for
the mid morning high tide cycle. The shallow coastal flooding is
expected to be fairly minor with levels near advisory criteria
due to lingering onshore swell energy which will continue to
diminish throughout the day.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until noon edt Friday for amz374.

Near term...

short term...

long term...

aviation...

marine...

fire weather...

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 TempWater Temp WavesPressureDewPt
CHTS1 0 mi46 min NW 7 G 15 50°F 60°F1014.9 hPa
FBIS1 - Folly Island, SC 7 mi40 min W 5.1 G 7 48°F 1015.3 hPa (-0.4)45°F
41029 - Capers Nearshore (CAP 2) 16 mi32 min WNW 14 G 19 50°F 57°F1014.5 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi115 min WSW 1 47°F 1015 hPa45°F
41033 43 mi32 min WNW 9.7 G 14 50°F 60°F1015 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi40 min W 21 G 27 69°F1014.3 hPa (-0.4)

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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
NW8
G11
N7
G10
N9
G14
N7
N5
G8
NW8
G14
N9
G16
NW11
N7
G11
NW10
G14
N9
G14
NW10
G16
NW9
G14
NW9
G15
NW6
G14
NW8
G11
NW6
G9
NW8
G12
NW7
G11
W4
G8
W5
G12
W3
G10
NW8
G12
NW6
G14
1 day
ago
N16
N15
G19
N12
G16
N15
N12
G16
NE10
G15
NE9
N10
G13
N6
G10
N8
G12
N11
G14
N13
N12
G15
N10
N10
N7
G11
N7
G11
N11
G14
N11
G14
N10
G13
N7
G10
N11
G14
N9
G13
N8
G14
2 days
ago
N5
NW3
G6
N3
N3
N3
N3
E9
SE10
SE10
G13
SE9
S8
S6
S2
SW3
SW1
N5
G11
N14
G18
N7
G12
N12
G18
N12
G18
N14
G19
N15
G20
N14
G17
N16
G20

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi45 minW 510.00 miFair46°F44°F93%1015.2 hPa
Charleston, Charleston Air Force Base, SC10 mi1.7 hrsW 68.00 miOvercast47°F44°F90%1014.4 hPa
Mount Pleasant Regional-Faison Field, SC11 mi65 minW 610.00 miOvercast48°F46°F94%1014.6 hPa

Wind History from CHS (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 24hrN6N7NE10N10NW8N11N16N13N12N15
G19
N14N10N10N10N10N6NW7N6NW6W7W7W6W6W7
1 day agoNE11NE10NE14NE11NE11
G17
NE9NE8
G19
NE13
G17
N9
G17
N10NE9NE8NE9NE8N8N5N6N6N6NE7N7N7NE6N4
2 days agoN3N3N33CalmW646S10S9S11S7S7SW4CalmNE12NE7NE9N10
G18
NE9NE9NE11NE11
G17
NE11

Tide / Current Tables for Charleston, South Carolina
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Charleston
Click for Map
Thu -- 02:54 AM EDT     -1.08 feet Low Tide
Thu -- 07:22 AM EDT     Sunrise
Thu -- 08:00 AM EDT     Moonset
Thu -- 09:09 AM EDT     6.32 feet High Tide
Thu -- 03:18 PM EDT     -0.91 feet Low Tide
Thu -- 07:31 PM EDT     Sunset
Thu -- 08:26 PM EDT     Moonrise
Thu -- 09:38 PM EDT     6.42 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
2.50.7-0.6-1.1-0.41.12.94.55.86.364.93.31.5-0-0.9-0.60.52.23.95.36.26.45.6

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
   EDIT      (on/off)   Help   One Week of Data
Charleston Harbor Entrance
Click for Map
Thu -- 12:25 AM EDT     -3.36 knots Max Ebb
Thu -- 03:26 AM EDT     0.01 knots Slack
Thu -- 05:55 AM EDT     2.28 knots Max Flood
Thu -- 07:22 AM EDT     Sunrise
Thu -- 08:00 AM EDT     Moonset
Thu -- 09:42 AM EDT     -0.00 knots Slack
Thu -- 12:48 PM EDT     -3.21 knots Max Ebb
Thu -- 03:51 PM EDT     0.01 knots Slack
Thu -- 06:22 PM EDT     2.16 knots Max Flood
Thu -- 07:31 PM EDT     Sunset
Thu -- 08:26 PM EDT     Moonrise
Thu -- 10:08 PM EDT     -0.01 knots Slack
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
-3.3-3.2-2.2-0.70.822.32.11.70.9-0.4-1.8-2.9-3.2-2.5-1.20.21.52.12.11.91.30.2-1.3

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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 (7,2,3,4)
      (on/off)   Help

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

Ad by Google

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.