Tuesday, June19, 2018 L-36.com


Marine Weather and Tides
Mount Pleasant, SC

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 6:10AMSunset 8:31PM Tuesday June 19, 2018 10:00 PM EDT (02:00 UTC) Moonrise 11:32AMMoonset 12:00AM Illumination 41% Phase: Waxing Crescent; Moon at 7 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- 942 Pm Edt Tue Jun 19 2018
Tonight..SW winds 15 kt, diminishing to 5 to 10 kt after midnight.
Wed..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon.
Wed night..SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. A slight chance of showers and tstms after midnight.
Thu..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Thu night..SW winds 5 to 10 kt. A chance of showers and tstms.
Fri..W winds 5 kt, becoming sw in the afternoon. A chance of showers and tstms.
Fri night..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat..SW winds 5 to 10 kt. A chance of showers and tstms.
Sat night..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Sun..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Sun night..SW winds 10 kt. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
AMZ300 942 Pm Edt Tue Jun 19 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. The region will remain situated between atlantic high pressure and an inland trough of low pressure until later this week. The trough of low pressure will then settle over the region and will persist into early next week. A cold front could push into the region by the middle of next week.

7 Day Forecast for Marine Location Near Mount Pleasant, SC
   Hourly   EDIT   Help
location: 32.93, -79.83     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 200158
afdchs
area forecast discussion
national weather service charleston sc
958 pm edt Tue jun 19 2018

Synopsis
The region will remain situated between atlantic high pressure
and an inland trough of low pressure until later this week. The
trough of low pressure will then settle over the region and
will persist into early next week. A cold front could push into
the region by the middle of next week.

Near term until 6 am Wednesday morning
The region will lie under or near the NE portions of mid and
upper ridging, while at the surface and low level we're situated
between an inland trough to the w-nw and the atlantic ridge to
our se. Plenty of dry air throughout a good portion of the
troposphere is evident on not only water vapor imagery, but also
as shown on the 00z sounding.

What little convection there was over SE ga earlier has
dissipated, and upstream the isolated activity from near cae to
flo should stay outside our forecast limits before it dissipates
early tonight.

Other than scattered cirrus clouds and patchy late night stratus
at most, skies will be mainly clear through the night. There
doesn't appear to be any concern regarding fog.

It'll be another warm and humid night with the elevated dew
points, the boundary layer still somewhat mixed through 06z,
and both temps and dew points that are generally higher than
they were 24 hours ago. So we're looking at not only many places
holding at or above 80f through about 1 am, but lows will be no
better than the mid or upper 70s. In addition it'll be close to
the record high minimum in downtown charleston for june 20th
(see climate section below).

Short term 6 am Wednesday morning through Friday
Wednesday and Thursday: under the influence of an upper level
ridge, hot and humid conditions will dominate this period. Daily
maximum heat index values will top out at least in the 105-109f
range, and heat advisories will likely be required for most all
areas Wednesday and Thursday. Also, the capping influence of the
upper ridge will translate to limited afternoon evening thunderstorm
coverage, with pops no greater than slight chance low chance both
days.

Wednesday night, thunderstorms could develop over coastal waters and
could impact coastal counties. Thursday night, isolated scattered
thunderstorms could persist well into the night, developing along
various mesoscale boundaries over the region and or pushing into the
area from the west. Lows in the 70s will be common both nights,
although some locations on the immediate coast will remain around
80f.

Friday: the upper ridge will weaken retreat south of the region, and
troughing at the surface and aloft should support somewhat greater
coverage of thunderstorms especially during the afternoon evening
hours. Despite this changing regime, heat index values could once
again exceed 105f in many areas, although this will depend on
coverage timing of thunderstorms.

Long term Friday night through Tuesday
The upper ridge will gradually rebuild over the weekend into
early next week, resulting in warming temperatures and a return
to the possibility of heat advisories. Mainly diurnal showers
and tstms anticipated each day. There is a chance that a weak
front could drop into the area next Tuesday, bringing a
temporary relief to the hot weather.

Aviation 02z Wednesday through Sunday
Vfr will prevail through 00z Thursday. The risk for shra tsra
Wednesday afternoon evening is too low to carry any mention in
the tafs at this stage.

Extended aviation outlook: mainlyVFR outside any thunderstorms.

Marine
Tonight: decent mixing (at least by june standards) is
continuing between a ne-sw oriented trough to the w-nw and sub-
tropical ridging to the se. As a result we have s-sw winds as
high as 15 or 20 kt early tonight, before they veer a little
further W overnight, then drop to 10-15 or less by late. Since
winds are running as high as they are, we have raised seas to as
great as 3 or 4 ft, highest across amz350 and amz374.

A typical summertime pattern will prevail through this weekend.

South southwest winds during the afternoon evening hours will veer
toward the west southwest during each overnight morning. Small craft
advisory conditions are not expected, but winds could increase to 15-
20 knots at times, especially during the daily sea breeze.

Seas will remain 2-3 feet. Thunderstorm coverage and associated
potential for associated local hazards could increase later this
week through this weekend.

Climate
Record high minimums for downtown charleston (kcxm):
june 20: 82f 2015.

June 21: 82f 2015.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Spr
long term... Jrl
aviation...

marine...

climate...



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 11 mi42 min SSW 8.9 G 12 82°F 86°F1013.4 hPa
41029 - Capers Nearshore (CAP 2) 14 mi52 min WSW 18 G 21 82°F 83°F1012.4 hPa
FBIS1 - Folly Island, SC 17 mi60 min SSW 15 G 19 82°F 1013.6 hPa (+0.0)76°F
ACXS1 - ACE Basin Reserve, SC 42 mi75 min Calm 83°F 1013 hPa78°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 45 mi75 min SW 8 83°F 1012 hPa77°F
41004 - EDISTO - 41 NM Southeast of Charleston, SC 49 mi30 min SW 16 G 19 1013.1 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
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
Last
24hr
SW7
G11
SW7
G10
SW6
G11
SW6
G11
SW5
G8
SW5
G8
W5
SW5
SW3
SW4
W6
G9
W8
G11
SW3
G6
SW5
SW5
G11
S8
G12
S9
G13
S8
G13
SW10
G13
SW7
G13
S9
G14
SW9
SW7
G12
SW8
G11
1 day
ago
SW4
SW4
S2
SW4
SW3
SW4
SW3
SW3
SW5
SW5
SW3
G6
W4
SE3
S8
S9
G12
S11
S11
S9
G14
S9
SW10
G14
S9
G12
S5
G8
SW6
G11
2 days
ago
SE5
S3
SW1
W3
N1
N2
N4
NE5
NE3
E3
NE2
E2
SE4
SE5
SE7
SE7
SE7
E7
SE8
SE9
SE9
S8
G11
S7
G10
S4
G8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Pleasant Regional-Faison Field, SC3 mi85 minSSW 89.00 miFair82°F77°F84%1012.9 hPa
Charleston, Charleston Air Force Base, SC11 mi64 minSSW 810.00 miMostly Cloudy82°F75°F82%1012.7 hPa
Charleston Executive Airport, SC18 mi65 minSSW 76.00 miFog/Mist81°F77°F89%1013.2 hPa
Moncks Corner Berkeley County, SC21 mi65 minSSW 810.00 miFair82°F73°F74%1012.5 hPa

Wind History from CHS (wind in knots)
10
PM
11
PM
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
Last 24hrSW7SW5SW4SW7SW5W5W5W5W4W4W5W8W6SW7W5SW6W6SW9SW9S11S14SW13SW13S8
1 day agoS5SW4S3S3S4CalmCalmS3S3S3SW5W6W6NW5NW4NW5CalmSW11S13S11S13S13S8S9
2 days agoSE4S4CalmCalmNE3NE3CalmNE3CalmCalmCalm4CalmE34E8SE8SE8SE12SE10SE12S10S8S7

Tide / Current Tables for Cainhoy, Wando River, South Carolina
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Cainhoy
Click for Map
Tue -- 12:52 AM EDT     Moonset
Tue -- 02:03 AM EDT     6.98 feet High Tide
Tue -- 06:10 AM EDT     Sunrise
Tue -- 08:05 AM EDT     -0.17 feet Low Tide
Tue -- 12:32 PM EDT     Moonrise
Tue -- 02:46 PM EDT     6.19 feet High Tide
Tue -- 08:25 PM EDT     0.19 feet Low Tide
Tue -- 08:30 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.66.676.65.33.61.80.4-0.20.21.22.645.266.25.54.22.61.20.30.31.22.6

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
   EDIT      (on/off)   Help   One Week of Data
Charleston Harbor Entrance
Click for Map
Tue -- 12:52 AM EDT     Moonset
Tue -- 01:44 AM EDT     -0.00 knots Slack
Tue -- 04:58 AM EDT     -2.65 knots Max Ebb
Tue -- 06:11 AM EDT     Sunrise
Tue -- 08:15 AM EDT     0.00 knots Slack
Tue -- 10:35 AM EDT     1.54 knots Max Flood
Tue -- 12:32 PM EDT     Moonrise
Tue -- 02:22 PM EDT     -0.00 knots Slack
Tue -- 05:29 PM EDT     -2.36 knots Max Ebb
Tue -- 08:30 PM EDT     Sunset
Tue -- 08:35 PM EDT     0.00 knots Slack
Tue -- 10:52 PM EDT     1.57 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.7-0.3-1.4-2.3-2.7-2.3-1.4-0.30.81.51.51.41.10.4-0.7-1.6-2.3-2.3-1.6-0.60.51.31.6

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (22,6,7,8)
      (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.