Monday, January21, 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 7:19AMSunset 5:42PM Monday January 21, 2019 12:53 PM EST (17:53 UTC) Moonrise 6:27PMMoonset 7:43AM Illumination 99% Phase: Full Moon; Moon at 16 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- 1033 Am Est Mon Jan 21 2019
Rest of today..N winds 10 to 15 kt.
Tonight..NE winds 10 kt.
Tue..NE winds 10 to 15 kt.
Tue night..E winds 10 to 15 kt with gusts to 20 kt, becoming se after midnight. A slight chance of showers.
Wed..S winds 10 to 15 kt. A chance of showers.
Wed night..S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Waves 1 to 2 ft. Showers.
Thu..W winds 15 to 20 kt. Waves 1 to 2 ft. Showers.
Thu night..W winds 10 to 15 kt.
Fri..NW winds 10 kt.
Fri night..NW winds 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 56 degrees.
AMZ300 1033 Am Est Mon Jan 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will extend across the region through Wednesday. A cold front will push offshore early Thursday with high pressure prevailing Friday and Saturday. A storm system could affect the area Sunday.


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


Area Discussion for - Charleston, SC
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Fxus62 kchs 211615
afdchs
area forecast discussion
national weather service charleston sc
1115 am est Mon jan 21 2019

Synopsis
High pressure will extend across the region through Wednesday.

A cold front will push offshore early Thursday with high
pressure prevailing Friday and Saturday. A storm system could
affect the area Sunday.

Near term through tonight
Today: a mid upper lvl trough will continue to shift further off
the northeast coast while cold high pressure extends over the
southeast united states at the sfc. The setup will lead to dry
and much cooler conditions over all areas throughout the day as
the atmosphere is slow to modify despite a favorable downsloping
wind off the sfc and a full day of sun. Light northerly sfc
winds will turn northeast late with little to no effect in
regards to warming temps. In general, temps should only peak in
the lower 40s across the tri-county area and mid upper 40s
across southern southeast south carolina and much of southeast
georgia. These sfc temps in combination with sfc dewpts lowering
to 5-10 degrees north to 15-20 degrees south should produce rh
values around 25% for locations away from the coast in southeast
south carolina and perhaps over western most zones in southeast
georgia.

Tonight: low-lvl thicknesses and h85 temps should gradually recover
as the h85 ridge shifts over the western atlantic. Low temps are
forecast to be 1-3 degrees colder than the previous night, dipping
into the mid upper 20s inland to low mid 30s near the coast. The
combination of cold temps and steady northeast winds should support
wind chill values from the upper teens to the mid 20s, or around 5
degrees above wind chill advisory levels.

Short term Tuesday through Thursday
High pressure centered over nc on Tuesday will shift off the
coast by evening, allowing a weak onshore flow to develop across
the local area. Weak warm air advection will yield high temps
about ten degrees warmer than today. As an upper trough
moves out of the central united states, a weak coastal trough
will develop Tuesday evening, gradually lifting north as a warm
front late Tuesday night into Wednesday. As low-level moisture
also begins to increase, isentropic ascent could result in
isolated to scattered showers Tuesday night into Wednesday.

A progressive upper trough will push a cold front through the
area Wednesday night and off the coast by Thursday morning.

Strong SW 0-6 km flow will spread unseasonably high pwats (around
1.75") into the area ahead of the cold front. There will also be
some upper jet divergence over the area Wednesday night. Widespread
moderate to occasionally heavy rain is expected Wednesday night,
tapering off Thursday morning. QPF will be 1-1.5". Wednesday
will be unseasonably warm with highs in the upper 60s to lower
70s.

Skies will partially clear by Thursday afternoon. Cold air
advection will not commence in earnest until the afternoon so
highs should manage to reach the low to mid 60s.

Long term Thursday night through Sunday
Cool high pressure will build over the area Friday, then a
reinforcing dry cold front will sweep through Friday night.

Temps on Saturday will thus be a few degrees cooler than Friday.

Southerly flow will redevelop by Sunday as an upper trough
approaches. A potent storm system could affect the area Sunday
but considerable model disagreement exists.

Aviation 16z Monday through Friday
Vfr conditions will prevail at both chs and sav terminals through
12z Tuesday. North winds will prevail today, followed by northeast
winds this evening and overnight.

Extended aviation outlook: flight restrictions possible Tuesday
night through Thursday morning.

Marine
Today and tonight: high pressure will prevail over all coastal
waters with conditions expected to remain below small craft
advisory levels. However, north winds should continue to gust
to around 20 kt late this morning and early afternoon, before
gradually turning northeast this evening and persisting
overnight. Seas will generally range between 2-3 ft in nearshore
waters and 3-4 ft in offshore georgia waters today, but should
gradually build to 3-4 ft in nearshore waters and 4-5 ft in
offshore waters overnight.

Quiet conditions will prevail across the marine area through
Wednesday. An approaching cold front will result in
strengthening southerly winds Wednesday night. Winds will turn
westerly on Thursday, continuing to be rather strong into the
night before weakening Friday. A period of small craft
advisories is likely Wednesday night through Thursday night.

Tides coastal flooding
The combination of astronomical factors and northeast winds could
result in shallow coastal flooding with the high tide Tuesday
morning.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Dpb
short term... Jrl
long term... Jrl
aviation... Dpb jrl
marine... Dpb jrl
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 0 mi36 min NW 8 G 13 45°F 55°F1030.2 hPa
FBIS1 - Folly Island, SC 7 mi54 min N 8 G 11 39°F 1030.4 hPa (+2.1)12°F
41029 - Capers Nearshore (CAP 2) 16 mi46 min N 12 G 16 39°F 56°F1030.1 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi69 min N 4.1 41°F 1030 hPa18°F
41033 43 mi46 min N 7.8 G 12 39°F 1030 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi34 min N 19 G 25 60°F1030.1 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi59 minNNW 117.00 miFair41°F12°F31%1030.1 hPa
Charleston, Charleston Air Force Base, SC10 mi58 minN 1310.00 miA Few Clouds41°F12°F30%1030.1 hPa
Mount Pleasant Regional-Faison Field, SC11 mi59 minN 8 G 1410.00 miFair39°F12°F33%1030.1 hPa

Wind History from CHS (wind in knots)
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NW11NW10NW10NW9NW8NW10NW8NW7NW8NW8NW7N8NE8N11N10N12N10N13
1 day agoSW13SW13SW13SW13
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W13SW7SW8W10W8W8W15
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2 days agoW7CalmSW6NW5W4W4CalmW3CalmS5S4S5S6E3CalmNE4E3CalmSE5E6SE5SE7SE7S11

Tide / Current Tables for Charleston, South Carolina
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Charleston
Click for Map
Mon -- 12:17 AM EST     Full Moon
Mon -- 01:34 AM EST     -1.14 feet Low Tide
Mon -- 07:20 AM EST     Sunrise
Mon -- 07:42 AM EST     Moonset
Mon -- 07:56 AM EST     6.56 feet High Tide
Mon -- 02:16 PM EST     -0.74 feet Low Tide
Mon -- 05:41 PM EST     Sunset
Mon -- 06:27 PM EST     Moonrise
Mon -- 08:21 PM EST     5.40 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0-1-1-0.11.63.55.16.26.66.14.93.21.50.1-0.7-0.50.62.23.64.85.35.24.42.9

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Mon -- 12:17 AM EST     Full Moon
Mon -- 02:00 AM EST     0.01 knots Slack
Mon -- 04:40 AM EST     2.41 knots Max Flood
Mon -- 07:20 AM EST     Sunrise
Mon -- 07:41 AM EST     Moonset
Mon -- 08:34 AM EST     -0.00 knots Slack
Mon -- 11:42 AM EST     -3.28 knots Max Ebb
Mon -- 02:48 PM EST     0.00 knots Slack
Mon -- 05:07 PM EST     1.93 knots Max Flood
Mon -- 05:41 PM EST     Sunset
Mon -- 06:27 PM EST     Moonrise
Mon -- 08:47 PM EST     -0.01 knots Slack
Mon -- 11:57 PM EST     -3.07 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.5-1.4-01.32.22.42.11.60.7-0.6-2-3-3.2-2.5-1.10.31.41.91.81.40.8-0.3-1.6-2.7

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (12,3,4,5)
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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.