Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Beaufort, 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 6:44AMSunset 7:58PM Saturday April 21, 2018 3:21 AM EDT (07:21 UTC) Moonrise 10:33AMMoonset 12:00AM Illumination 34% Phase: Waxing Crescent; Moon at 6 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 319 Am Edt Sat Apr 21 2018
Today..E winds 15 to 20 kt. Seas 3 to 5 ft.
Tonight..E winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 5 ft.
Sun..E winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. A slight chance of showers in the afternoon.
Sun night..E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. A chance of showers in the evening, then showers likely after midnight.
Mon..E winds 20 to 25 kt, becoming se 25 to 30 kt in the afternoon. Seas 6 to 8 ft, building to 8 to 10 ft in the afternoon. Showers with a slight chance of tstms.
Mon night..SE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 8 to 10 ft, subsiding to 6 to 8 ft after midnight. Showers with a slight chance of tstms.
Tue..S winds 10 to 15 kt. Seas 5 to 7 ft. A chance of showers.
Tue night..SW winds 10 kt. Seas 4 to 6 ft. A chance of showers.
Wed..W winds 10 kt. Seas 3 to 4 ft.
Wed night..SW winds 10 kt. Seas 3 to 4 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 319 Am Edt Sat Apr 21 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Cool and dry high pressure will prevail into Sunday. A low pressure system will approach the area late Sunday and will then slowly move up the coast through the middle of next week. Weak high pressure will return late next week.

7 Day Forecast for Marine Location Near Beaufort, SC
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location: 32.44, -80.67     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 210524
afdchs
area forecast discussion
national weather service charleston sc
124 am edt Sat apr 21 2018

Synopsis
Cool and dry high pressure will prevail into Sunday. A low
pressure system will approach the area late Sunday and will
then slowly move up the coast through the middle of next week.

Weak high pressure will return late next week.

Near term until 6 am this morning
Recent temp trends with light or calm winds and excellent
radiational cooling ongoing has forced us to lower min temps
about 1-2f most places, with the coldest readings in the upper
30s and lower 40s along the NW tier, ranging to S warm as 50-55f
near and along the coast with onshore flow. The shoreline
communities will experience e-ne winds as high as 15-20 mph
through the overnight. Other than some marine-induced
stratocumulus impacting mcintosh county, liberty county and
maybe long county, the rest of the forecast area looks to be
clear.

Previous discussion...

tonight: aloft, the axis of a mid-lvl trough of low pressure will
shift further off the northeast coast, making way to mid-lvl ridging
associated with high pressure building from the west. At the sfc,
the area will remain positioned between high pressure to the north
and a weakening coastal trough along near the northern florida
coast. Given the setup, expect dry and clear conditions for most
locations throughout the night. A fair amount of radiational cooling
will help temps dip to the lower 40 degrees well inland and upper
40s lower 50s near the coast. Temps could be slightly warmer near
the coast in southeast georgia, mainly near the altamaha river where
the coastal trough supports an east-northeast wind that drives
moisture and some clouds onshore.

Short term 6 am this morning through Monday
Saturday and Saturday night: aloft, low amplitude ridging will
translate across the forecast area ahead of a deep upper low
crossing the central conus. Surface high pressure will sit off to
the northeast and drive a cool northeast to easterly flow through
the day. Clouds during the day will be mainly confined to coastal
georgia where stratocumulus will begin to spread onshore in the
afternoon. Highs will be cool and below normal, ranging from the mid
70s inland to the upper 60s low 70s at the coast. Overnight, little
change to the pattern with lows ranging from the upper 40s to the
mid 50s along the georgia coast.

Sunday through Monday: the forecast becomes increasingly active late
in the weekend and early next week as a strongly forced system moves
into the region. On Sunday, the aforementioned upper low will move
into the lower mississippi valley, and the first shot of shortwave
energy will move through ahead of the low. Overall Sunday will bring
increasing cloud cover and notable moistening of the column. There
may be enough forcing and subtle low level convergence to kick off a
few showers in the afternoon, and the forecast features 20-30
percent rain chances.

The most interesting part of the forecast comes late Sunday night
and Monday. Precipitable water values are progged to surge into the
1.4-1.6 inch range (in excess of the 90th percentile based on
climatology), coincident with excellent difluent flow aloft and
strong low level convergence isentropic ascent. There is good model
consensus showing precipitation rapidly breaking out in the early
morning hours on Monday across southeast georgia and spreading
northeastward through the afternoon. There is even good agreement on
a subtle surface wave feature along the coastal trough that could
further enhance the rainfall potential. Models have seemingly
increased the rainfall total potential and place the forecast area
in the bullseye. Following the most up to date wpc forecast results
in a very beneficial widespread 2-3 inches with potential for
locally higher amounts. There remains some thunder potential, though
mainly for southeast georgia and the adjacent coastal waters. The
severe threat looks to be rather low though, and this system
certainly looks to be more of a rain maker. Precipitation coverage
and intensity will focus more into southeast south carolina later in
the day, and should begin to diminish across southeast georgia. Rain
chances across the entire day are in the 90-100 percent range.

Long term Monday night through Friday
A closed upper low over the southeast on Tuesday will get absorbed
by a stronger shortwave dropping out of the midwest during the
middle of next week. Concurrently at the surface, an area of low
pressure will lift northeast out of southern georgia Monday night
and then move slowly up the coast. Weak high pressure will return
late week as the surface low continues to move away from the area
into the northeast u.S. Main chances for rain will come early in the
period as the low drifts directly over the area. Temperatures will
be near normal.

Aviation 06z Saturday through Wednesday
Although ksav has a small potential for a brief period of
high-end MVFR ceilings on Saturday, both that terminal and kchs
will beVFR through 06z Sunday. East winds will peak at least
as high as 15-20 kt during the late morning and afternoon at
both sites.

Extended aviation outlook: flight restrictions in reduced
ceilings and visibilities are expected to develop and spread
across the region Sunday night. These conditions should persist
through at least Monday night with breezy southeasterly winds.

Marine
Tonight: the area will remain between high pressure passing well to
the north and a coastal trough along the northern florida coast.

Although recent trends show the pressure gradient slowly relaxing
over the waters, the gradient remains fairly pinched over southern
georgia waters with seas ranging between 3-5 ft nearshore and 6-8 ft
well offshore. Conditions should remain just below small craft
advisory levels over nearshore waters through the remainder of the
night, thus the advisory has been allowed to expire. However, a
small craft advisory will be ongoing in offshore georgia waters for
prevailing east-northeast winds of 20-25 kt and seas that gradually
subside to 5-7 ft after midnight.

Saturday through Wednesday: high pressure to the northeast will
drive elevated east or northeasterly flow across the local waters
into Sunday. Winds will generally top out in the 15-20 knot range.

Seas up to 6 feet will continue in the outer georgia waters into
Saturday night. Then Sunday and Sunday night, an area of low
pressure will approach from the west and work to tighten the
pressure gradient. Winds will steadily increase Sunday night and
Monday, resulting in winds in the 25-30 knot range and solid small
craft advisory conditions across all waters. There is even a low end
chance for gales to develop depending on exactly how the southeast
flow sets up with the pinched gradient. Seas are expected to
increase significantly on Monday as a result, with 10 ft seas
possible inside of 20 nm. Conditions will improve Tuesday into
Wednesday as the surface low pulls away from the region.

Rip currents: elevated onshore winds in the 15-20 knot range,
astronomical influences, and some swell energy will result in a
moderate risk of rip currents at all beaches on Saturday.

A prolonged stretch of moderate to perhaps strong onshore winds and
larger surf, first due to high pressure, then as low pressure passes
nearby early next week, will lead to an enhanced risk of rip
currents at the beaches.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 6 am edt Sunday for amz374.

Near term... Dpb
short term...

long term... Ect
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 14 mi97 min Calm 52°F 47°F
41033 18 mi74 min ENE 16 G 23 62°F 63°F1024.8 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 31 mi52 min E 15 G 20 62°F 65°F1025.3 hPa
FBIS1 - Folly Island, SC 45 mi82 min E 15 G 18 61°F 1026.6 hPa (-0.9)45°F
CHTS1 46 mi52 min NE 8.9 G 9.9 60°F 65°F1026 hPa

Wind History for Fort Pulaski, GA
(wind in knots)    EDIT      (on/off)   Help
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W8
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SW4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beaufort County Airport, SC3 mi27 minE 810.00 miFair57°F44°F63%1025.4 hPa
Beaufort, Marine Corps Air Station, SC4 mi26 minENE 710.00 miFair59°F48°F69%1025.5 hPa
Hilton Head Island, Hilton Head Airport, SC15 mi27 minENE 9 G 1410.00 miFair61°F41°F48%1025.4 hPa

Wind History from NBC (wind in knots)
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NE8E7E8SE4SE4E7E10E6E3E4CalmCalmE3E5NE7
1 day agoSW11SW9SW7SW9SW12W14
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W10--NW6NW8NW6N11N13
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2 days agoSW8SW8SW7SW8SW9W9W12
G19
W10SW9W14
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SW18S8S7S6S7S6S5SW11SW6SW8SW10

Tide / Current Tables for Beaufort, Beaufort River, South Carolina
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Beaufort
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Sat -- 12:56 AM EDT     Moonset
Sat -- 01:44 AM EDT     8.45 feet High Tide
Sat -- 06:46 AM EDT     Sunrise
Sat -- 08:05 AM EDT     0.23 feet Low Tide
Sat -- 11:33 AM EDT     Moonrise
Sat -- 02:19 PM EDT     7.01 feet High Tide
Sat -- 07:56 PM EDT     Sunset
Sat -- 08:25 PM EDT     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.18.28.47.76.34.32.30.80.20.71.93.65.26.476.864.52.81.20.30.41.53.2

Tide / Current Tables for Parris Island, Marine Corps Recruit Depot, Beaufort River, South Carolina
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Parris Island
Click for Map
Sat -- 12:56 AM EDT     Moonset
Sat -- 01:20 AM EDT     8.00 feet High Tide
Sat -- 06:46 AM EDT     Sunrise
Sat -- 07:39 AM EDT     0.15 feet Low Tide
Sat -- 11:34 AM EDT     Moonrise
Sat -- 02:00 PM EDT     6.73 feet High Tide
Sat -- 07:56 PM EDT     Sunset
Sat -- 07:57 PM EDT     0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.387.86.85.23.31.60.40.212.54.15.46.46.76.35.23.720.60.10.72.14

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 (3,6,7,8)
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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.