Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Goose Creek, SC

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:37AMSunset 7:58PM Tuesday April 24, 2018 8:11 AM EDT (12:11 UTC) Moonrise 1:40PMMoonset 2:30AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 708 Am Edt Tue Apr 24 2018
Today..SW winds 10 to 15 kt. A chance of showers this morning.
Tonight..SW winds 5 to 10 kt.
Wed..SW winds 5 to 10 kt.
Wed night..W winds 5 to 10 kt, becoming nw after midnight.
Thu..N winds 5 kt, becoming se in the afternoon.
Thu night..S winds 5 kt. A chance of showers.
Fri..SW winds 5 to 10 kt. A slight chance of showers.
Fri night..SW winds 5 kt. A slight chance of showers.
Sat..W winds 5 kt.
Sat night..NW winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 65 degrees.
AMZ300 708 Am Edt Tue Apr 24 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Low pressure will cross the area today and will slowly move up the east coast through mid week. An upper level disturbance will move over the area Thursday night, followed by a cold front late week or early this weekend. High pressure will then build over the region through early next week.

7 Day Forecast for Marine Location Near Goose Creek, SC
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location: 33, -79.94     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 241128
afdchs
area forecast discussion
national weather service charleston sc
728 am edt Tue apr 24 2018

Synopsis
Low pressure will cross the area today and will slowly move up
the east coast through mid week. An upper level disturbance
will move over the area Thursday night, followed by a cold
front late week or early this weekend. High pressure will then
build over the region through early next week.

Near term through tonight
A closed upper low spinning over tennessee will start to make
some eastward progress today, while an associated surface low
drifts overhead. The persistent stream of showers that were
moving onshore over charleston county overnight has finally
moved off the coast. Have kept 20-30% pops for the next couple
of hours, but largely precip is done as drier air works into the
area. Later in the day, couldn't rule out a few showers far
inland with the upper low nearby, but models output very little
to no QPF so no more than slight chance pops are in the forecast
at this time. Cloud cover will continue to decrease this
morning, with partly to mostly sunny skies expected by the
afternoon. Temperatures will return closer to normal today with
highs in the upper 70s to around 80 away from the coast.

Tonight, the low pressure system will finally begin to slowly
lift northeast and away from the area. Little in the way of
cloud cover expected, but winds will likely stay a bit elevated.

Lows will be a few degrees above normal, mainly in the upper
50s to around 60.

Short term Wednesday through Friday
Wednesday: low pressure at the surface and aloft will move away from
the region. Cannot completely rule out a shower or two across
northern counties but moisture appears insufficient to justify a
mention of precipitation. Expect high temps around 80f away from the
immediate coast. Temps Wednesday night will bottom out in the
mid upper 50s inland and around 60f on the coast.

Thursday: an amplifying shortwave and associated surface low will
approach the region during the day and will cross the area at night.

Isolated scattered showers could push into the region Thursday
afternoon, but highest pops 30-35 percent south and 45-50 percent
inland north should occur Thursday night. Cannot rule out isolated
thunderstorms with this system, but instability remains too limited
to justify any mention of thunder. Expect high temps in the
mid upper 70s most inland locations, followed by low temps in the
lower-mid 50s inland and around 60f on the coast.

Friday: isolated showers cannot be ruled out due to persistent
surface-850 mb troughing, so the latest forecast includes slight
chance pops. However, models disagree regarding moisture, and a rain-
free day is entirely possible. Temps should top out close to normal
for late april, in the mid upper 70s.

Long term Friday night through Monday
Forecast confidence remains low through Saturday. A longwave upper
trough and associated cold front will push through the region.

However, solutions range from progressive features crossing the
region within nothing more than a few showers to a deeper upper
trough and associated surface cyclogenesis producing more persistent
precipitation through Saturday. The latest forecast maintains a rain-
free forecast Saturday. Then, models agree that high pressure will
build at the surface and aloft over the region late weekend through
at least early next week, supporting dry weather and near to
slightly above normal temps.

Aviation 11z Tuesday through Saturday
Low ceilings will continue to scatter out this morning, withVFR
expected the remainder of the 12z TAF cycle.

Extended aviation outlook: flight restrictions are possible
with showers late Thursday early Friday. Otherwise,VFR.

Marine
Today into tonight: winds have vastly dropped off as a warm
front shifted north of the waters and the pressure gradient
relaxed. South winds will gradually become more southwest as the
day progresses, with speeds 10-15 knots on average. Seas will
be slower to improve. Seas will drop below small craft advisory
criteria for the southern two nearshore zones this afternoon.

6+ foot seas will continue through tonight in the charleston
county waters and outer ga waters.

Wednesday through Sunday: the last of the 6 ft SCA seas should
retreat beyond the outer ga waters by early Wednesday afternoon.

Then, small craft advisory conditions are not expected through this
weekend. Synoptic wind direction will change with time, with
offshore winds becoming SW Wednesday then SE Thursday, followed by
sw winds Friday, offshore winds Saturday and NE winds Sunday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 5 pm edt this afternoon for amz352.

Small craft advisory until 2 pm edt Wednesday for amz374.

Small craft advisory until 7 am edt Wednesday for amz350.

Small craft advisory until noon edt today for amz354.

Near term... Ect
short term... Spr
long term... Spr
aviation... Ect
marine... Ect spr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 15 mi41 min SSW 5.1 G 6 67°F 65°F1012 hPa
FBIS1 - Folly Island, SC 22 mi71 min SSW 6 G 7 66°F 1012.6 hPa66°F
41029 - Capers Nearshore (CAP 2) 22 mi63 min SW 3.9 G 5.8 66°F 1010.1 hPa
ACXS1 - ACE Basin Reserve, SC 41 mi86 min Calm 66°F 65°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 47 mi86 min E 1 65°F 1012 hPa64°F

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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E17
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G29
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G32
E15
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SW5
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NE8
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E15
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G17
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NW2
G5
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G5
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G7
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G9
NE16
G21
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G16
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G15
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G16
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G16
NE9
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G12
NE7
G11
NE9

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston, Charleston Air Force Base, SC8 mi75 minS 45.00 miFog/Mist67°F66°F100%1011.7 hPa
Mount Pleasant Regional-Faison Field, SC11 mi36 minS 42.50 miFog/Mist66°F66°F100%1012.2 hPa
Moncks Corner Berkeley County, SC14 mi16 minN 01.00 miFog/Mist64°F62°F94%1011.8 hPa
Summerville Airport, SC18 mi16 minN 05.00 miFog/Mist64°F64°F100%1012.2 hPa
Charleston Executive Airport, SC21 mi16 minSSW 44.00 miFog/Mist66°F66°F100%1012.2 hPa

Wind History from CHS (wind in knots)
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Last 24hrSE8E18E14
G23
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G31
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SE15
G33
SE29
G40
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SE16
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SE13SE11SE6SE8CalmNE3S4SW4S4SW6
1 day agoE6E12
G17
E15E12SE12
G20
SE13
G20
E12E15
G21
E14
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E11E10E12E15
G21
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G21
2 days agoNE9NE10E10E14
G21
E9E11E15E14E14E14E10E8NE7NE6NE6E6E5E5NE4NE6E7NE7E7E6

Tide / Current Tables for Back River Reservoir, West Branch, Cooper River, South Carolina
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Back River Reservoir
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Tue -- 03:25 AM EDT     0.10 feet Low Tide
Tue -- 03:30 AM EDT     Moonset
Tue -- 06:39 AM EDT     Sunrise
Tue -- 09:30 AM EDT     0.96 feet High Tide
Tue -- 02:40 PM EDT     Moonrise
Tue -- 04:12 PM EDT     0.08 feet Low Tide
Tue -- 07:56 PM EDT     Sunset
Tue -- 10:14 PM EDT     0.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.20.10.10.30.50.70.90.910.90.70.50.30.20.10.10.30.50.70.80.90.9

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Tue -- 12:28 AM EDT     1.55 knots Max Flood
Tue -- 03:29 AM EDT     Moonset
Tue -- 04:25 AM EDT     -0.00 knots Slack
Tue -- 06:39 AM EDT     Sunrise
Tue -- 07:43 AM EDT     -2.38 knots Max Ebb
Tue -- 10:53 AM EDT     0.00 knots Slack
Tue -- 01:02 PM EDT     1.40 knots Max Flood
Tue -- 02:40 PM EDT     Moonrise
Tue -- 04:59 PM EDT     -0.00 knots Slack
Tue -- 07:55 PM EDT     Sunset
Tue -- 08:12 PM EDT     -2.27 knots Max Ebb
Tue -- 11:15 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.51.310.4-0.6-1.5-2.2-2.4-1.8-0.90.11.11.41.31.10.8-0-0.9-1.8-2.3-2.1-1.3-0.3

Weather Map and Satellite Images
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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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (8,2,3,4)
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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.