Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Port Royal, 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 7:24AMSunset 7:36PM Thursday March 21, 2019 5:56 PM EDT (21:56 UTC) Moonrise 7:29PMMoonset 7:03AM Illumination 99% 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
AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 343 Pm Edt Thu Mar 21 2019
Tonight..SW winds 10 to 15 kt, becoming W 15 to 20 kt late this evening. Seas 3 to 4 ft.
Fri..NW winds 10 to 15 kt, becoming W in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon.
Fri night..NW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Sat..N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Sat night..E winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..S winds 5 to 10 kt. Seas 2 ft.
Mon..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers and tstms.
Mon night..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms.
Tue..N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
Tue night..NE winds 20 to 25 kt. Seas 4 to 6 ft. A chance of showers. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 343 Pm Edt Thu Mar 21 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A cold front will move offshore tonight. High pressure will build over the region on Friday and will linger through this weekend. Low pressure may move across the region on Monday night through Tuesday night.


7 Day Forecast for Marine Location Near Port Royal town, SC
   Hourly   EDIT   Help
location: 32.33, -80.47     debug


Area Discussion for - Charleston, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kchs 212017
afdchs
area forecast discussion
national weather service charleston sc
417 pm edt Thu mar 21 2019

Synopsis
A cold front will move offshore tonight. High pressure will
build over the region on Friday and will linger through this
weekend. Low pressure may move across the region on Monday
night through Tuesday night.

Near term until 6 am Friday morning
This evening and tonight: the area will remain along the southern
base of a mid-lvl trough of low pressure shifting over the southeast
united states this evening, helping maintain a westerly flow
across the area. Mixing profiles continue to support wind gusts
generally up to 15-20 mph, but winds should gradually decrease
as diurnal heating is loss this evening. A dry cold front is
expected to continue shifting over the area this evening, then
offshore early tonight, helping maintain modest low-lvl mixing
and winds generally around 5 mph through the night. There
should be a brief period of mid clouds shifting over the area
this evening, but skies are expected to become clear overnight
as dry air continues to advect into the region behind the cold
front and mid-upper lvl trough aloft. In general, temps should
dip into the low mid 40s, coldest well inland.

Short term 6 am Friday morning through Sunday
A elongated area of high pressure sourced from central canada will
begin to build over the region on Friday. The center of the high is
forecast to settle over the forecast area Saturday and Saturday
night. The high will slide off the carolina coast on Sunday. The
weather through the period will be dry with clear to mostly clear
sky conditions. Daytime temperatures will peak around 70 with
morning lows in the 40s, warmest conditions on Sunday.

Long term Sunday night through Thursday
A broad low pressure system is forecast to track across the region
Monday night through Tuesday night. I will increase pops during the
period and will introduce schc for thunderstorms Tuesday afternoon
and evening. Cold air advection in the wake of the low may result in
upper 30s inland early Wednesday morning. Sfc high pressure is
expected to dominate the region Wednesday and Thursday.

Aviation 20z Thursday through Tuesday
Vfr conditions will prevail at both chs and sav terminals through
18z Friday. West-southwest winds could up to around 15-20 kt at
both terminals this afternoon.

Extended aviation:VFR through Sunday. Flight restrictions are
possible Tuesday and Tuesday night.VFR conditions return on
Wednesday.

Marine
This evening and tonight: west-southwest winds will peak near
15-20 kt at times this evening ahead of a dry cold front
approaching the waters by early evening. Winds should be highest
across northern south carolina waters. Seas will generally peak
near 3-4 ft in nearshore waters and up to 4-6 ft in offshore
georgia waters this evening. Jetting and surging is expected
behind the front with west-southwest winds turning more northwest
during the second half of the night. Cold air advection along
with 1000mb geostrophic flow near 30-35 kt will likely support
small craft advisory level conditions over offshore georgia
waters through the night and for roughly a 4-6 hour window
across northern south carolina waters beyond 10 nm from the
coast. Given the setup, a small craft advisory is now in effect
for northern south carolina waters starting at 11 pm tonight,
mainly for wind gusts near 25 kt and seas up to 6 ft closer to
20 nm offshore. A small craft advisory will remain in effect for
offshore georgia waters through the night. Weaker low-lvl
mixing near the coast and south, should keep winds just below
advisory criteria over remaining waters.

Extended marine: high pressure will build over the marine zones
Friday through Saturday, yielding winds generally below 15 kts. A
short window of gusty winds are possible Friday evening. Seas are
expected to range between 2 to 4 ft. Low pressure is forecast to
track near the region on Tuesday and Tuesday night. In the wake of
the low, gusty NE winds are expected across the marine zones. Small
craft advisory conditions may begin on Tuesday and remain through
Wednesday.

Rip currents: a moderate risk for rip currents will continue along
the beaches through Friday evening. Surf is forecast to feature
2 ft with 10 second periods. Northwest winds are expected during
the morning Friday, then will shift from the west.

Fire weather
A dry cold front will move across southeast georgia late afternoon
into early evening. Winds are expected to remain elevated with gusts
up to around 15-20 kt early evening. In addition, rh values will
remain near critical for the next couple hours away from the coast.

Fuels across southeast georgia are the lowest in our forecast area,
but values appear marginal. Per collaboration with SPC fire weather,
all of southeast georgia is in an elevated potential for fire danger
through late afternoon. A fire danger statement remains in place for
this region into early evening.

Friday: rh values as low as 25-30 percent and elevated offshore
winds could also cause fire concerns, especially if partners
report low fuel moisture.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until noon edt Friday for amz374.

Small craft advisory from 11 pm this evening to 6 am edt
Friday for amz350.

Near term... Dpb
short term... Ned
long term... Ned
aviation... Dpb ned
marine... Dpb ned
fire weather...



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
41033 5 mi49 min SSE 9.7 G 12 61°F 60°F1009.1 hPa
ACXS1 - ACE Basin Reserve, SC 16 mi72 min S 2.9 64°F 1009 hPa46°F
FPKG1 - 8670870 - Fort Pulaski, GA 31 mi45 min S 8 G 13 64°F 60°F1009.1 hPa
FBIS1 - Folly Island, SC 39 mi57 min SSW 14 G 17 60°F 1009.7 hPa (-2.3)49°F
CHTS1 43 mi45 min SSW 9.9 G 13 64°F 60°F1009 hPa

Wind History for Fort Pulaski, GA
(wind in knots)    EDIT      (on/off)   Help
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
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
SE6
G9
NE10
G13
NE11
G14
NE8
NE7
NE4
NE3
NW6
N7
N6
N6
NW5
N5
NW5
NW3
SW3
SW5
G8
SW6
W7
G10
SW6
G9
SW9
G13
S8
G14
S9
G14
S8
G12
1 day
ago
E13
G17
NE11
G14
NE12
G17
NE12
G15
NE11
G15
NE10
NE12
G15
NE11
NE8
N8
G11
N9
N10
G14
N7
N8
N14
G17
N11
G14
N11
G14
NE8
G11
NE7
N4
G7
NE10
NE9
G13
NW8
E10
2 days
ago
S4
S4
S3
G6
SW3
W2
NW4
NW6
N10
G13
NE15
NE16
G22
NE18
G23
NE16
G21
NE15
G20
NE15
G21
NE16
G24
NE15
G20
NE14
G18
NE16
G21
NE15
G20
NE13
G17
E14
G17
NE13
G17
E16
G20
E16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC10 mi82 minS 107.00 miPartly Cloudy63°F41°F45%1009.1 hPa
Hilton Head Island, Hilton Head Airport, SC14 mi67 minSSE 910.00 miPartly Cloudy63°F46°F56%1009.5 hPa
Beaufort, Marine Corps Air Station, SC17 mi61 minSSE 1010.00 miOvercast63°F48°F60%1009.1 hPa

Wind History from HXD (wind in knots)
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
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrN13
G20
N13
G19
NE11NE14N10N44N444Calm4W8W5SW5SW10W8
G13
W8
G14
SW7
G13
SW5
G12
W9
G16
S9
G15
S9S6
1 day agoN14N12N12NE12
G18
NE10NE9NE8NE10NE9
G18
NE11
G16
N11NE9
G16
N12N12N12
G20
N12
G18
N12N12NW7
G14
N7
G14
NW7
G14
N6
G12
N13
G20
N12
2 days agoS6S6S3CalmCalmCalmN6NE10
G16
NE13NE14
G19
NE15NE14N12N12N12NE12
G20
NE15
G21
NE16
G22
NE12
G18
NE14
G20
N10N10N10N10

Tide / Current Tables for Fripps Inlet, Hunting Island Bridge, St. Helena Sound, South Carolina
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Station Creek, County Landing, South Carolina
   EDIT      (on/off)   Help   One Week of Data
Station Creek
Click for Map
Thu -- 02:54 AM EDT     -1.62 feet Low Tide
Thu -- 07:25 AM EDT     Sunrise
Thu -- 08:03 AM EDT     Moonset
Thu -- 09:32 AM EDT     8.43 feet High Tide
Thu -- 03:16 PM EDT     -1.36 feet Low Tide
Thu -- 07:34 PM EDT     Sunset
Thu -- 08:29 PM EDT     Moonrise
Thu -- 10:00 PM EDT     8.46 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
41.3-0.9-1.6-0.90.93.25.57.38.38.37.152.40-1.3-10.32.44.76.788.57.8

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 (17,4,5,8)
      (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.