Friday, March24, 2017 L-36.com


Marine Weather and Tides
North Charleston, SC

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:15AMSunset 7:36PM Friday March 24, 2017 10:07 AM EDT (14:07 UTC) Moonrise 4:04AMMoonset 3:12PM Illumination 10% Phase: Waning Crescent; Moon at 27 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
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AMZ330 Charleston Harbor- 352 Am Edt Fri Mar 24 2017
Today..E winds 5 to 10 kt.
Tonight..SE winds 5 to 10 kt.
Sat..SE winds 5 to 10 kt.
Sat night..SE winds 5 to 10 kt. A slight chance of showers after midnight.
Sun..S winds 5 kt...increasing to 10 kt in the afternoon. A slight chance of showers in the morning.
Sun night..S winds 5 to 10 kt.
Mon..SW winds 5 to 10 kt.
Mon night..S winds 5 kt. A slight chance of showers and tstms.
Tue..SW winds 5 to 10 kt. A chance of showers with a slight chance of tstms.
Tue night..SW winds 5 to 10 kt. Mariners are reminded that winds and waves can be higher in and near tstms. Unless otherwise noted...waves 1 foot or less. Charleston harbor water temperature...60 degrees.
AMZ300 352 Am Edt Fri Mar 24 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build in from the north tonight before shifting over the atlantic Friday into the weekend. The high will weaken early next week...then a cold front could possibly affect the area around mid week.

7 Day Forecast for Marine Location Near North Charleston, SC
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location: 32.85, -80.05     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 241123
afdchs
area forecast discussion
national weather service charleston sc
723 am edt Fri mar 24 2017

Synopsis
The high will weaken early next week with a weak cold front
stalling over the area mid week, then likely shifting back
northward as a warm front late in the week.

Near term /through tonight/
As of 720 am: winds appeared a little more backed from the ne
during the pre dawn period. I expect winds will shift from the
ene with the onset of diurnal heating. Winds should continue to
veer through the rest of the morning into the early afternoon.

Temperatures will be updated to align with early morning
observations.

As of 625 am: the forecast area remained clear to mostly clear.

I will populate with the latest round of observations.

Temperatures will remain nearly steady before warming with
sunrise. Latest runs of MOS continue to support the current high
temperature forecast, no edits made to the highs.

As of 425 am: I will issue a quick update to adjust sky cover to
account for a few mid to high clouds over the mid savannah river
valley. Otherwise, the current forecast appears on track.

Previous discussion:
today into tonight, the forecast area will remain under the axis of
a mid level ridge as a strong low pressure system tracks east across
the southern great plains. At the sfc, the center of high pressure
is forecast to slide over bermuda. Sfc winds should remain from the
ne through the early daylight hours, then veer from the SE by mid
afternoon. Afternoon high temperatures will likely range from the
mid to upper 70s as temps over the waters favor the low to mid 60s.

Given the forecast wind shift and decent land/water temperature
difference, it appears very favorable from a sea breeze to develop
during the early afternoon and drive west. Accounting for the sea
breeze, I will populate the high temps with bias corrected
temperature guidance, indicating a tight temperature gradient along
the coast. Hourly temperatures will feature cooling mid to late
afternoon temps in the wake of the sea breeze. A few fair weather cu
may develop along and ahead of the boundary, but capped by a
significant inversion around h8. High clouds well ahead of a cold
front will increase across eastern ga and sc tonight. SE winds
should weaken to 5 kts by the late night hours. Min temps should
favor the low 50s inland to the upper 50s near the beaches.

Short term /Saturday through Monday/
Atlantic high pressure will persist through the period, although
will generally weaken with time over the local area. Some shortwave
energy will shift through on Sunday on the southeast periphery of
deep low pressure over the midwest with additional energy
approaching Monday ahead of a secondary upper trough. This pattern
will lead to warmer than normal temperatures, likely hitting the
lower 80s inland Sunday/Monday. Some showers and thunderstorms are
expected, mainly Sunday/Monday when instability will be a bit
greater. No significant rainfall and/or severe weather anticipated
at this time however.

Long term /Monday night through Thursday/
A weakening cold front looks to approach the area mid week before
stalling and eventually shifting back northward as a warm front late
in the period. Some showers and thunderstorms are expected, mainly
mon night into Tuesday and again Friday as a shortwave energy moves
through the area. No significant rainfall and/or severe weather
anticipated at this time however.

Aviation /12z Friday through Tuesday/
Vfr. The center of a 1035+mb sfc high will remain off the
delmarva coast, ridging sough across the carolinas and georgia
this morning. By early to mid afternoon, the center of the high
will shift off the carolina coast. Winds will remain steady from
the NE through early this morning, veering from the SE by late
morning. High temperatures over land in the low to mid 70s and
se flow around 10 kts should bring a sea breeze inland by mid
afternoon. I will indicate sct040 along and ahead of the sea
breeze this afternoon. Winds should settle to around 5 kts this
evening.

Extended aviation outlook: low risk of restrictions, mainly
early next week due to mainly early morning low clouds/fog and
afternoon showers/tstms.

Marine
At the sfc, the center of high pressure is forecast to slide over
bermuda. Sfc winds should remain from the NE through the early
daylight hours, then veer from the SE by mid afternoon. Near shore
zones will see decreasing wave heights through today, with 2-3 feet
common late this afternoon. Seas across amz374 will begin the day
between 5 to 7 feet, decreasing to around 5 feet this afternoon. Sca
will remain for amz374 through 6 pm today.

Saturday through Wednesday: no significant concerns with atlantic
high pressure generally in control until a weakening cold front
moves into the area Wednesday. Seas look to be near 6 feet near the
gulf stream through Tuesday which could necessitate an advisory
there. Otherwise winds should mainly be 20 knots or less.

Chs watches/warnings/advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 6 pm edt this evening for amz374.

Near term... Ned
short term... Rjb
long term... Rjb
aviation... Ned
marine... Ned/rjb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 8 mi49 min NNW 5.1 G 6 58°F 60°F1032.3 hPa
FBIS1 - Folly Island, SC 14 mi67 min NNE 8.9 G 9.9 58°F 1032.5 hPa (+1.1)56°F
41029 - Capers Nearshore (CAP 2) 23 mi59 min NE 9.7 G 14 59°F 1031.9 hPa
ACXS1 - ACE Basin Reserve, SC 29 mi82 min N 1.9 52°F 1032 hPa50°F
41033 44 mi59 min NNE 9.7 G 14 58°F 59°F1031.3 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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Last
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NE21
G26
NE21
G30
NE20
NE17
G22
NE19
NE17
G21
NE15
NE16
G21
NE19
G23
NE15
G21
NE10
G15
NE10
NE9
G12
NE9
NE9
G12
NE9
NE8
G12
NE7
N5
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G6
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G5
1 day
ago
NW12
G16
N9
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N10
G13
N7
G12
N8
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G10
NE16
E15
E15
NE14
NE11
G15
NE11
G15
NE12
NE9
G12
NE14
G17
NE19
G23
NE19
G26
NE14
G19
NE16
NE16
G20
NE14
G19
N11
G15
N11
G15
N12
G15
2 days
ago
SW6
G9
SW8
G11
S7
S4
G7
S6
G11
S9
G13
SW9
G13
SW11
G15
SW9
G15
SW8
G15
SW10
G16
SW9
G14
SW10
G16
SW7
G10
SW6
G9
SW5
G10
N5
G10
NW3
SW8
W4
NW3
W6
G9
W6
G10
NW9
G16

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston, Charleston Air Force Base, SC4 mi71 minENE 710.00 miFair56°F50°F81%1032.2 hPa
Charleston Executive Airport, SC11 mi12 minNNE 410.00 miFair64°F55°F73%1032.5 hPa
Mount Pleasant Regional-Faison Field, SC15 mi32 minN 09.00 miFair61°F55°F83%1032.5 hPa
Summerville Airport, SC19 mi12 minE 410.00 miFair57°F50°F77%1032.8 hPa
Moncks Corner Berkeley County, SC23 mi12 minENE 37.00 miFair57°F48°F72%1032.5 hPa

Wind History from CHS (wind in knots)
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Last 24hrNE12
G17
E17
G22
E12
G19
E14E13
G22
E14
G18
E8E12E12E14E9NE7NE6E9NE6NE6NE6NE6NE8NE8NE4N3NE76
1 day agoN14
G20
NE16
G22
NE10
G18
N15NE11
G18
N15
G18
NE11
G19
E12E12E9
G16
E4NE6NE7NE9E10E16
G23
E11NE12NE12NE10NE9NE9NE10
G17
NE10
G20
2 days agoW9W9W5W6W13
G18
W10
G18
SW13SW15S8S11S9SW8SW9SW8NW15
G30
N12W5S8W8W6W5S8NW9N12

Tide / Current Tables for Drayton, Bee's Ferry, Ashley River, South Carolina
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Drayton
Click for Map
Fri -- 12:01 AM EDT     0.46 feet Low Tide
Fri -- 05:04 AM EDT     Moonrise
Fri -- 06:32 AM EDT     5.74 feet High Tide
Fri -- 07:18 AM EDT     Sunrise
Fri -- 12:43 PM EDT     0.27 feet Low Tide
Fri -- 04:12 PM EDT     Moonset
Fri -- 06:44 PM EDT     5.46 feet High Tide
Fri -- 07:34 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.81.734.25.25.75.75.142.61.40.50.30.92.13.54.65.35.4542.71.4

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Fri -- 12:11 AM EDT     0.00 knots Slack
Fri -- 02:35 AM EDT     1.36 knots Max Flood
Fri -- 05:03 AM EDT     Moonrise
Fri -- 06:27 AM EDT     -0.00 knots Slack
Fri -- 07:17 AM EDT     Sunrise
Fri -- 09:44 AM EDT     -2.14 knots Max Ebb
Fri -- 12:47 PM EDT     0.00 knots Slack
Fri -- 02:58 PM EDT     1.47 knots Max Flood
Fri -- 04:11 PM EDT     Moonset
Fri -- 06:35 PM EDT     -0.00 knots Slack
Fri -- 07:34 PM EDT     Sunset
Fri -- 09:57 PM EDT     -2.02 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.10.61.31.31.10.90.4-0.5-1.3-2-2.1-1.6-0.80.21.11.51.20.90.4-0.4-1.2-1.8-2-1.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (10,2,3,4)
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Ground Weather Radar Station Charleston, SC
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weather_mapweather_map weather_map

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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.