Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Hardeeville, SC

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:19AMSunset 7:41PM Saturday March 25, 2017 7:35 PM EDT (23:35 UTC) Moonrise 4:49AMMoonset 4:18PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 258 Pm Edt Sat Mar 25 2017
Tonight..SE winds 5 to 10 kt. Seas 2 to 4 ft.
Sun..SE winds 5 to 10 kt. Seas 3 to 4 ft.
Sun night..SE winds 5 to 10 kt. Seas 3 to 4 ft.
Mon..S winds 5 to 10 kt. Seas 3 to 4 ft.
Mon night..S winds 5 to 10 kt. Seas 3 to 4 ft.
Tue..SW winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms.
Tue night..SW winds 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms in the evening.
Wed..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..S winds 5 to 10 kt. Seas 2 to 3 ft.
Thu..S winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Thu night..S winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers and tstms. Mariners are reminded that winds and seas can be higher in and near tstms.
AMZ300 258 Pm Edt Sat Mar 25 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will weaken into early next week. A weak cold front should then stall over the area during the middle of next week, then shift back north as a warm front late in the week.

7 Day Forecast for Marine Location Near Hardeeville, SC
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location: 32.3, -81.12     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 251922
afdchs
area forecast discussion
national weather service charleston sc
322 pm edt Sat mar 25 2017

Synopsis
Atlantic high pressure will weaken into early next week. A weak
cold front should then stall over the area during the middle of
next week, then shift back north as a warm front late in the
week.

Near term /through tonight/
Quiet conditions will persist tonight as weakening atlantic
high pressure holds firm. A broken line of showers associated
with a decaying cold front could approach far interior southeast
georgia just before sunrise, but most of the measurable rainfall,
if any, looks to remain to the west. Scattered, diurnal cumulus
will quickly dissipate after sunset with only thin cirrus
poised to traverse southeast south carolina and southeast
georgia this evening. The only exception will be across the
charleston tri-county area and portions of the far southern
south carolina coast where extensive closed-cell stratocumulus
will continue to stream inland from off the atlantic. Expect
most locations will be mostly cloudy by daybreak Sunday as
thicker cirrus steadily overtakes the area from west-east after
midnight ahead of negatively tilted shortwave energy trailing
south of the upper low over the mid-mississippi valley. Adjusted
sky cover grids to reflect this thinking. Lows will range from
the mid-upper 50s inland with upper 50s-lower 60s at the
beaches.

Short term /Sunday through Tuesday/
A weakening shortwave trough will cross the region from west to east
Sunday, supporting isolated/scattered showers and even a couple of
thunderstorms during the afternoon/early evening especially away
from the immediate coast as the sea breeze pushes through inland
counties. Shortwave ridging will prevail Monday, but isolated-
scattered showers/thunderstorms could still develop along the
sea breeze mainly during the afternoon/early evening. A somewhat
deeper but weakening shortwave trough aloft will push into the
region later Monday night through Tuesday. This trough should
produce isolated/scattered showers/thunderstorms, especially
Tuesday afternoon. Due to westerly steering flow and a sea
breeze pinned near the coast, a few thunderstorms could push to
the beaches.

Guidance advertises limited instability through this period, so the
potential for severe weather remains low. Limited coverage of
showers/thunderstorms should also reduce the potential for
significant rainfall.

Despite the fact that we can expect more clouds than sunshine
through this period, above-normal temperatures will prevail, with
inland high temps around 80f Sunday increasing to the lower 80s
Monday and even mid 80s min some areas Tuesday. With onshore flow,
temperatures will remain much cooler, mainly in the 60s, on the
beaches Sunday and Monday. Tuesday, warmer temps in the 70s could
migrate to the beaches before the sea breeze develops in the
afternoon. Above-normal overnight low temperatures in the upper 50s
to lower 60s will remain common, with many areas not falling below
60f Tuesday overnight/early Wednesday.

Long term /Tuesday night through Friday/
A weakening cold front looks to approach the area mid week before
stalling and eventually shifting back northward as a warm front. By
Friday forecast uncertainty grows as the 00z/25 GFS is showing a
potent upper low moving through the region which would make for more
unsettled weather than the preferred ECMWF solution which is more in
line with wpc. At this point we think some showers and thunderstorms
will be possible, mainly each afternoon starting Thursday, with
temperatures running above normal.

Aviation /18z Saturday through Thursday/
Vfr. There are some signs that a brief period of MVFR CIGS could
develop at ksav overnight, but statistical guidance and rap
soundings suggest otherwise. Will keep conditionsVFR for now.

Extended aviation outlook: mainlyVFR. Brief flight restrictions
possible in any showers/thunderstorms. Low probability of flight
restrictions, mainly early morning low clouds and/or fog Monday
through Wednesday.

Marine
Tonight: east to southeast winds will continue tonight with the
center of atlantic high pressure centered well offshore. Speeds
look to remain 15 kt or less through sunrise with seas averaging
2-4 ft nearshore waters and 4-5 over the georgia offshore leg.

Sunday through Thursday: winds should remain below small craft
advisory levels through this period. However, swell energy will
maintain elevated seas, and 6 foot seas could push into the waters
especially beyond 20 nm early to mid week, enhanced by offshore low
pressure through the first half of the week. Wave watch guidance
advertises even high seas as high pressure builds from the north
later this week.

Chs watches/warnings/advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 22 mi48 min SE 6 G 9.9 69°F 62°F1022.8 hPa
41033 38 mi88 min E 5.8 G 7.8 63°F 61°F1022.7 hPa
ACXS1 - ACE Basin Reserve, SC 40 mi111 min ESE 4.1 71°F 1023 hPa56°F
SAXG1 - Sapelo Island Reserve, GA 62 mi96 min ESE 7 74°F 1022 hPa (-2.0)59°F

Wind History for Fort Pulaski, GA
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E15
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Savannah, Savannah International Airport, GA12 mi43 minESE 1310.00 miPartly Cloudy71°F52°F51%1022.1 hPa
Hunter U. S. Army Airfield, GA19 mi38 minSE 1110.00 miFair71°F56°F62%1021.6 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi46 minENE 410.00 miPartly Cloudy68°F59°F73%1023 hPa

Wind History from SAV (wind in knots)
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Last 24hrE6E6E6E4CalmCalmCalmE3E3CalmNE3E4N5E3SE6SE5SE10S10S13E10SE11
G19
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1 day agoE9E7E8NE6--NE5N5NE6N4N6NE4NE4N4N4NE4E10E12E13
G20
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2 days agoE14E9E8E7NE9NE9NE6E10E15
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G25
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G20
E13E13

Tide / Current Tables for Purrysburg Landing, Savannah River, South Carolina
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Purrysburg Landing
Click for Map
Sat -- 04:07 AM EDT     0.11 feet Low Tide
Sat -- 05:49 AM EDT     Moonrise
Sat -- 07:21 AM EDT     Sunrise
Sat -- 08:58 AM EDT     3.00 feet High Tide
Sat -- 04:45 PM EDT     -0.01 feet Low Tide
Sat -- 05:18 PM EDT     Moonset
Sat -- 07:39 PM EDT     Sunset
Sat -- 09:13 PM EDT     3.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.10.60.30.10.41.22.12.832.92.62.11.610.50.100.61.72.6332.7

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Sat -- 01:28 AM EDT     0.00 knots Slack
Sat -- 04:09 AM EDT     2.15 knots Max Flood
Sat -- 05:47 AM EDT     Moonrise
Sat -- 07:20 AM EDT     Sunrise
Sat -- 07:54 AM EDT     -0.00 knots Slack
Sat -- 11:05 AM EDT     -2.12 knots Max Ebb
Sat -- 02:05 PM EDT     0.00 knots Slack
Sat -- 04:37 PM EDT     2.23 knots Max Flood
Sat -- 05:17 PM EDT     Moonset
Sat -- 07:38 PM EDT     Sunset
Sat -- 08:07 PM EDT     -0.00 knots Slack
Sat -- 10:58 PM EDT     -2.09 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.4-0.50.71.72.121.50.9-0.1-1.2-1.9-2.1-2-1.4-0.11.22.12.21.710.1-1-1.9-2.1

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (19,4,5,8)
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Ground Weather Radar Station Charleston, SC
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weather_mapweather_map weather_map

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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.