Wednesday, March20, 2019 L-36.com


Marine Weather and Tides
Wilmington Island, GA

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 7:26AMSunset 7:36PM Wednesday March 20, 2019 5:19 AM EDT (09:19 UTC) Moonrise 6:22PMMoonset 6:25AM Illumination 99% Phase: Full Moon; Moon at 14 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 400 Am Edt Wed Mar 20 2019
.small craft advisory in effect through this afternoon...
Today..N winds 10 to 15 kt. Seas 4 to 6 ft.
Tonight..N winds 10 to 15 kt. Seas 3 to 4 ft.
Thu..NW winds 5 to 10 kt, becoming W in the afternoon. Seas 3 to 4 ft.
Thu night..W winds 10 to 15 kt, becoming nw 15 to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Fri..NW winds 15 to 20 kt, becoming W 10 kt 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. Seas 2 to 3 ft.
Sat..NE winds 10 to 15 kt. Seas 2 to 3 ft.
Sat night..SE winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft.
Sun night..SE winds 5 to 10 kt. Seas 2 ft.
AMZ300 400 Am Edt Wed Mar 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A surface trough will develop along the carolina coast today then move away from the area tonight. High pressure will then build into the region and persist through the weekend. Low pressure could move through the southeast Tuesday.


7 Day Forecast for Marine Location Near Wilmington Island, GA
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location: 32, -81     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 200849
afdchs
area forecast discussion
national weather service charleston sc
449 am edt Wed mar 20 2019

Synopsis
A surface trough will develop along the carolina coast today then
move away from the area tonight. High pressure will then build into
the region and persist through the weekend. Low pressure could move
through the southeast Tuesday.

Near term through tonight
Pre-dawn: the exit region of a southern stream upper jet moving
through the lower gulf coast was strengthening an inverted
surface trough off the carolina coast and isentropic ascent was
already resulting in expanding stratocu along northeast sc early
this morning. Temps have been as low as 33 degrees overnight in
statesboro ga and patchy frost is likely many areas to the west
of i-95.

Today: model consensus has settled on a dry forecast across the
forecast area, although sky cover progs and resulting temperatures
remain on the tricky side with low pressure developing near the
nose of the offshore inverted trough. Moisture advection below 500
mb is aimed at the lower nc coast and there is uncertainty on the
coverage of stratocu over southeast sc. The 00z NAM continued to
show a very cool low level air mass with plenty of rh below 850
mb at kchs which was too much of an outlier to even consider
for today. We made little change to our forecast temp schemes.

Ga zones should see plenty of sunshine today and highs expected
to warm to the mid upper 60s this afternoon.

Tonight: weak low pressure is expected to lift north through eastern
nc as a mid shift short wave shifts into the far northwest ga late.

Dry weather is on tap with clouds across eastern sc expected to
clear as boundary layer flow GOES offshore overnight. Lows will
range from the upper 30s well inland to the lower mid 40s in the
coastal corridor.

Short term Thursday through Saturday
Tranquil weather is expected. High pressure will build and then
prevail across the region during the short term. Dry conditions are
forecasted with mostly clear skies. Temperatures will be near normal
for this time of year.

Long term Saturday night through Tuesday
High pressure will prevail across the region through the weekend.

Models show a coastal trough forming Monday while a system
approaches from the west. The system could bring rainfall to the
region on Tuesday. However, there remains uncertainty over the
timing, strength, and the track of this system.

Aviation 08z Wednesday through Sunday
Vfr.

Extended aviation:VFR.

Marine
Low pressure developing east of the south carolina coast today
will shift north of the waters tonight. Northeast flow will
mainly be below 20 kt today with winds backing more offshore
tonight with lighter speeds below 15 kt. Seas will remain in
sca ranges today and latest guidance was hinting some of our
near-shore waters may fall below SCA criteria sooner by early
tonight. If this occurs, we could cancel near shore advisories
a bit earlier than late tonight.

Extended marine: high pressure building towards the region will
allow winds and seas to trend downward. The small craft advisory
will expire for the ga waters beyond 20 nm on Friday. No advisories
are expected during the weekend.

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

Tides coastal flooding
Astronomical factors and moderate northeast winds today will
result in elevated tides with coastal flood advisories in
effect until mid morning for the entire coast as tides expected
to approach moderate flooding, more likely remaining in more
minor flooding ranges this morning. Another round of coastal
flooding is possible again this evening. The risk of coastal
flooding lowers on Thursday due to offshore winds.

Chs watches warnings advisories
Ga... Coastal flood advisory until 10 am edt this morning for gaz117-
119-139-141.

Sc... Coastal flood advisory until 10 am edt this morning for
scz048>051.

Marine... Small craft advisory until 6 pm edt this evening for amz352-
354.

Small craft advisory until 6 am edt Thursday for amz350.

Small craft advisory until noon edt Friday for amz374.

Near term...

short term...

long term...

aviation...

marine...

fire weather...

tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 6 mi37 min NNE 9.9 G 12 49°F 60°F1022.2 hPa
41033 37 mi71 min NNE 16 G 23 53°F 59°F1021.7 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 42 mi29 min NNE 16 G 19 56°F 61°F6 ft1021 hPa (-2.0)43°F
SAXG1 - Sapelo Island Reserve, GA 43 mi79 min NNE 8.9 47°F 1022 hPa (-2.0)40°F
ACXS1 - ACE Basin Reserve, SC 48 mi94 min N 1.9 45°F 1023 hPa34°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA8 mi23 minN 310.00 miFair44°F31°F61%1021.3 hPa
Savannah-Hilton Head International Airport, GA14 mi26 minN 610.00 miFair39°F33°F79%1022.5 hPa
Hilton Head Island, Hilton Head Airport, SC22 mi24 minNNE 1510.00 miFair48°F33°F58%1022.3 hPa

Wind History from SVN (wind in knots)
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NE7NE12NE7NE8NE5N6N5NE5CalmN3NE3CalmCalmN3
1 day agoCalmCalmW4W3NW3CalmN7NW8N7W6W7SW9NW10SE4SE5S5CalmCalmCalmN5N9NE9NE10NE11
2 days agoN4N5N5N3NE3NE3NE5N8N9NE8NE5N3NE3E6NE4NE3CalmCalmCalmCalmW3CalmCalmW3

Tide / Current Tables for Savannah Sheraton Resort Hotel, Wilmington River, Georgia
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Savannah Sheraton Resort Hotel
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Wed -- 02:22 AM EDT     -1.64 feet Low Tide
Wed -- 07:25 AM EDT     Moonset
Wed -- 07:28 AM EDT     Sunrise
Wed -- 08:32 AM EDT     9.51 feet High Tide
Wed -- 02:49 PM EDT     -1.39 feet Low Tide
Wed -- 07:22 PM EDT     Moonrise
Wed -- 07:35 PM EDT     Sunset
Wed -- 09:01 PM EDT     9.38 feet High Tide
Wed -- 09:43 PM EDT     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.3-0.1-1.5-1.30.335.88.19.39.48.26.23.71.1-0.8-1.4-0.31.94.578.89.48.87.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Wed -- 12:32 AM EDT     -2.52 knots Max Ebb
Wed -- 03:11 AM EDT     0.01 knots Slack
Wed -- 05:54 AM EDT     2.65 knots Max Flood
Wed -- 07:24 AM EDT     Moonset
Wed -- 07:27 AM EDT     Sunrise
Wed -- 09:33 AM EDT     -0.00 knots Slack
Wed -- 12:53 PM EDT     -2.60 knots Max Ebb
Wed -- 03:39 PM EDT     0.01 knots Slack
Wed -- 06:18 PM EDT     2.45 knots Max Flood
Wed -- 07:22 PM EDT     Moonrise
Wed -- 07:34 PM EDT     Sunset
Wed -- 09:43 PM EDT     Full Moon
Wed -- 09:57 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.4-2.5-1.8-0.31.32.42.72.41.80.7-0.6-1.8-2.4-2.6-2.2-10.51.82.42.31.91.1-0.1-1.4

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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Wind Forecast for Charleston, SC (5,6,7,8)
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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.