Monday, May20, 2019 L-36.com


Marine Weather and Tides
Kiawah Island, 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 6:16AMSunset 8:16PM Monday May 20, 2019 11:04 AM EDT (15:04 UTC) Moonrise 9:13PMMoonset 6:47AM Illumination 98% Phase: Waning Gibbous; 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
    EDIT      (on/off)   Help
AMZ330 Charleston Harbor- 1027 Am Edt Mon May 20 2019
Rest of today..S winds 10 to 15 kt.
Tonight..SW winds 5 to 10 kt.
Tue..SW winds 5 to 10 kt.
Tue night..S winds 5 kt.
Wed..E winds 5 to 10 kt.
Wed night..SE winds 10 kt, diminishing to 5 kt after midnight.
Thu..SE winds 5 kt.
Thu night..SW winds 5 to 10 kt.
Fri..SW winds 5 to 10 kt.
Fri night..W winds 5 to 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 78 degrees.
AMZ300 1027 Am Edt Mon May 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will be the dominant weather feature this week.


7 Day Forecast for Marine Location Near Kiawah Island, SC
   Hourly   EDIT   Help
location: 32.59, -80.11     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 201432
afdchs
area forecast discussion
national weather service charleston sc
1032 am edt Mon may 20 2019

Synopsis
High pressure will be the dominant weather feature this week.

Near term through tonight
Minimal changes with this update. Just the typical plugging of
the current observations into the grids and blending them into
the afternoon. Cams still hint at some isolated convection along
the sea breeze this afternoon. But it will be hard to get much
given all the dry air in place. Hence, no changes to the pops
for this afternoon. Otherwise, the thinking below remains the
same.

Today: overall the warm and dry pattern looks to remain intact
with the mid level ridge axis forecast to only nudge a tad to
the east by an advancing but quickly weakening short wave. It
appears like it will remain too dry aloft along with poor mid
level instability, resulting in only spotty isolated convective
rains along the sc sea breeze along and just inland from u.S. 17
in the mid afternoon afternoon hours. A narrow band of slightly
higher 850-500mb layer rh should push into our far northwest
zones late in the afternoon but with west winds in the boundary
layer and well mixed lower levels unimpressive surface dew
points, only a few showers or isolated tstms seem possible in
this region late day. We have pops slight chance ranges at best
today with a poor thermal updraft potential expected. MAX temps
will be similar to Sunday, lower 90s inland to upper 80s in the
coastal corridor inland from the beaches and barrier islands.

Tonight: a few spotty showers are possible early in the evening
across sc zones and there is a slim chance the weak vort lobe
aloft and slightly deeper moisture could result in a few late
night showers across the charleston tri-county area as well. We
have pops mainly silent post sunset, maintaining persistence
trends.

Short term Tuesday through Thursday
Tuesday: the mid upper lvl ridge will temporarily weaken as a front
lingers just north of the area and subtle h5 shortwave activity
traverses the area. Other than a few showers and or isolated
thunderstorm over the tri-county area during peak heating, expect
most areas to be dry and warm. In general, highs should peak in the
low mid 90s away from the coast. Temps should remain in the low mid
80s near the coast. Overnight lows will be mild under little to no
clouds. In general, lows should range in the upper 60s inland to
around 70 closer to the coast.

Wednesday and Thursday: sfc high pressure will become centered along
the mid-atlantic and southeast coasts mid week while a large
mid upper lvl ridge of high pressure remains centered over the
southeast united states. Given the setup, warm and dry conditions
will likely prevail through mid week. In general, highs should warm
into the low mid 90s inland while a more direct onshore wind limits
temps in the upper 80s to around 90 east of the i-95 corridor. Temps
should remain in the lower 80s along the immediate coast. Overnight
lows should range in the upper 60s to around 70 degrees.

Long term Thursday night through Sunday
Hot and dry conditions should prevail this weekend as deep layered
high pressure remains across the region. Friday afternoon temps
should top out in the mid upper 90s away from the coast. However,
warmest conditions should occur late weekend into early next week as
the mid upper lvl ridge makes a slight shift south, setting up a
northwest downslope flow across the region. This includes warmer
conditions along the beaches given the potential for a pinned
seabreeze each day. In general, Saturday and Sunday afternoon highs
should peak in the mid upper 90s away from the coast and upper 80s
along near the beaches. Temps could reach 100 degrees well inland
Saturday and Sunday, mainly along a corridor extending from
allendale hampton counties in southeast south carolina to tattnall
county in southeast georgia. The combination of heat and sfc dewpts
mixing out to the low mid 60s suggests heat index values around 100
degrees, mainly along and west of the i-95 corridor. Overnight lows
will likely be mild, generally in the low mid 70s each night.

Aviation 15z Monday through Friday
Vfr through 12z Tuesday. Isolated shra tsra may develop on the
sea breeze this afternoon, but this activity still looks too
spotty for any TAF considerations.

Extended aviation outlook:VFR conditions are expected at both chs
and sav terminals through late week.

Marine
Persistence forecast continues through tonight with south-
southwest flow mostly below 15 kt with seas 2 to 3 ft on average.

The land sea interface will continue to see typical warm season
diurnal peaks during the afternoon and early evening hours, a
few gusts to 20 kt are possible as the sea breeze pushes inland
along the sc intra-coastal and adjacent atlantic waters.

Tuesday through Saturday: high pressure will remain the dominant
weather feature across the coastal waters through late week,
supporting winds seas that remain below small craft advisory levels.

In general, south winds will prevail through Tuesday with wind
speeds no higher than 10-15 kts. By Wednesday, winds should become
more east southeast around 15 kts or less, before returning to more
of a south southwest flow late week. Seas should range between 1-3
ft.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Dpb
long term... Dpb
aviation...

marine...



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
FBIS1 - Folly Island, SC 13 mi65 min S 7 G 8.9 78°F 1018.4 hPa (+0.4)74°F
CHTS1 16 mi35 min S 9.9 G 12 81°F 78°F1017.7 hPa
ACXS1 - ACE Basin Reserve, SC 18 mi80 min SW 1.9 81°F 1018 hPa73°F
41033 27 mi57 min SW 9.7 G 12 77°F 76°F1017.4 hPa
41029 - Capers Nearshore (CAP 2) 30 mi57 min SSW 9.7 G 14 76°F 76°F1017.7 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 54 mi35 min S 7.8 G 9.7 76°F1018.7 hPa

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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
8
AM
9
AM
10
AM
Last
24hr
S11
G15
S12
G15
S10
G13
S10
G14
S11
G15
S11
G15
S12
S9
S10
G13
S10
S10
S9
G13
S9
S8
S7
S7
S3
S5
S3
S5
G8
S3
SW4
SW8
G11
S8
1 day
ago
SE6
SE8
SE9
S8
S10
S9
S9
S9
G12
S10
G13
S9
G14
S7
G10
S8
S6
G9
S7
G10
SW5
S6
G9
S4
G8
S4
SW4
S2
S3
S3
S10
G13
S9
G13
2 days
ago
SW6
G10
SW7
G11
S11
S11
S9
G14
S10
G13
S12
G17
S11
G15
S9
G13
SW12
G16
SW9
G13
SW8
G11
SW5
G10
SW5
G9
SW5
G8
SW5
G8
SW3
G6
SW4
SW6
SW6
G9
SW4
SW7
G11
W4
S1
G4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC10 mi70 minS 109.00 miMostly Cloudy81°F71°F74%1017.6 hPa
Charleston, Charleston Air Force Base, SC23 mi69 minSSW 1210.00 miA Few Clouds82°F66°F60%1017.4 hPa

Wind History from JZI (wind in knots)
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
8
AM
9
AM
10
AM
11
AM
Last 24hrS11S12S12SE9
G15
SE9SE7
G13
S8
G15
SE8SE7
G12
S6SE7S76S6SE4CalmCalmCalmCalmS5CalmSW7S8S11
1 day agoS7SE6S8S7S8S9SE9S10S8
G14
S10S6S6S4S5S4S5S5CalmCalmCalmCalmS6S8S9
2 days agoS9
G14
S7S11S12S11S13
G18
S14S13
G18
S10
G17
S10S8SW8SW9
G14
SW8SW6SW5SW6S6S6S6SW3SW7SW6S5

Tide / Current Tables for Kiawah River Bridge, South Carolina
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kiawah River Bridge
Click for Map
Mon -- 03:57 AM EDT     -0.19 feet Low Tide
Mon -- 06:18 AM EDT     Sunrise
Mon -- 07:46 AM EDT     Moonset
Mon -- 10:08 AM EDT     5.47 feet High Tide
Mon -- 03:58 PM EDT     -0.17 feet Low Tide
Mon -- 08:15 PM EDT     Sunset
Mon -- 10:12 PM EDT     Moonrise
Mon -- 10:39 PM EDT     6.72 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
5.23.51.70.3-0.20.31.52.94.155.55.24.22.91.40.3-0.20.31.63.14.65.86.66.7

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
   EDIT      (on/off)   Help   One Week of Data
Charleston Harbor Entrance
Click for Map
Mon -- 01:20 AM EDT     -3.04 knots Max Ebb
Mon -- 04:24 AM EDT     0.00 knots Slack
Mon -- 06:17 AM EDT     Sunrise
Mon -- 06:30 AM EDT     1.68 knots Max Flood
Mon -- 07:45 AM EDT     Moonset
Mon -- 10:15 AM EDT     -0.00 knots Slack
Mon -- 01:28 PM EDT     -2.30 knots Max Ebb
Mon -- 04:25 PM EDT     0.00 knots Slack
Mon -- 06:55 PM EDT     1.79 knots Max Flood
Mon -- 08:14 PM EDT     Sunset
Mon -- 10:11 PM EDT     Moonrise
Mon -- 10:53 PM EDT     -0.00 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
-2.3-3-2.8-1.9-0.60.81.61.61.30.90.2-0.7-1.6-2.2-2.2-1.5-0.50.61.51.81.61.40.9-0.1

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 (11,2,3,4)
      (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.