Saturday, March23, 2019 L-36.com


Marine Weather and Tides
Dutch 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 7:22AMSunset 7:38PM Saturday March 23, 2019 12:23 PM EDT (16:23 UTC) Moonrise 9:43PMMoonset 8:21AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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- 1049 Am Edt Sat Mar 23 2019
This afternoon..E winds 10 to 15 kt with gusts to 20 kt. Seas 2 ft.
Tonight..E winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 10 kt. Seas 2 ft.
Sun night..S winds 10 kt. Seas 2 ft.
Mon..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft. A slight chance of showers and tstms in the afternoon.
Mon night..SW winds 10 to 15 kt, becoming W after midnight. Seas 2 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 kt. Seas 4 to 6 ft.
Wed..NE winds 20 kt. Seas 5 to 7 ft.
Wed night..NE winds 15 to 20 kt. Seas 4 to 6 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 1049 Am Edt Sat Mar 23 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build over the region through early Monday. Low pressure is expected to move across the region Monday night and Tuesday. High pressure will then rebuild.


7 Day Forecast for Marine Location Near Dutch Island, GA
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location: 31.98, -81.01     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 231447
afdchs
area forecast discussion
national weather service charleston sc
1047 am edt Sat mar 23 2019

Synopsis
High pressure will build over the region through early Monday.

Low pressure is expected to move across the region Monday night
and Tuesday. High pressure will then rebuild.

Near term through tonight
As of 1045 am: the current forecast remains on track. I will
update the forecast parameters to align observations.

Previous discussion:
today: the mid upper level trough across the northeastern us
will move off the coast and shortwave ridging will steadily move
across the mississippi valley. At the surface, high pressure
will be the primary feature in the wake of a cold front drifting
to the south. Deep dry air will remain in place and a dry
forecast with clear skies is in place. Highs are forecast to be
very similar to Friday with temperatures ranging from the upper
60s across the tri-county region to the low 70s closer to the
altamaha.

Tonight: the tranquil pattern will persist as high pressure
remains across the forecast area. A few high clouds could pass
through at times, but no impact on the forecast. With a weak
pressure pattern in place for much of the forecast area, good
radiational cooling conditions will set up. Look for lows to
range from around 40 inland to the low 50s at the coast.

Short term Sunday through Tuesday
Warm advection will occur Sunday through Monday as the surface
high shifts offshore and deep southerly flow strengthens. Upper
shortwave energy will move into the carolinas on Monday with a
surface low shifting from the sc midlands into the grand strand
Monday evening. The best moisture and forcing will be over far
northern areas closer to the surface low track. We maintained
scattered showers, along with isolated thunderstorms Monday
afternoon evening. Isentropic ascent may produce a few lingering
showers into Tuesday as a backdoor front drops through the
area. Considerably cooler air will usher in behind the front on
Tuesday. Highs in the mid upper 70s Sunday-Monday will drop to
the 60s Tuesday.

Long term Tuesday night through Friday
Somewhat cooler weather will continue Tuesday night through
Wednesday night before temperatures moderate with the surface
high moving offshore. Temps expected to be pushing the upper 70s
to around 80 late next week with mainly dry conditions.

Aviation 15z Saturday through Wednesday
Vfr conditions will prevail at kchs and ksav through 12z
Sunday.

Extended aviation outlook: flight restrictions possible Monday
night through Tuesday night.

Marine
Today through tonight: northeast winds will prevail this
morning behind a southward moving cold front. Wind speeds are
expected to top out in the 15-20 knot range. Then by the
afternoon the gradient will relax significantly and winds will
veer to become onshore. Speeds are forecast to be 10 knots or
less. Overnight, winds are expected to remain onshore and top
out around 10 knots. Seas will peak this morning, highest 3-5
feet in the charleston county waters. Then overnight seas will
drop off and become 1-3 feet everywhere.

Gusty southwest winds expected Monday ahead of the surface low
but conditions are currently forecast just below advisory
thresholds. However, a persistent strong northeast gradient will
likely yield advisory conditions for most if not all of the
waters Tuesday through at least Thursday.

Fire weather
Relative humidity values are expected to drop into the 20 to 25
percent range this afternoon. However, winds will be much
lighter today so no fire danger statements are planned at this
time.

Equipment
The kclx radar is inoperative. Parts are on order and repairs
are expected to occur on Monday.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Ned
short term... Jrl
long term... Jrl
aviation... Bsh jrl
marine... Bsh jrl
fire weather...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi42 min E 15 G 20 58°F 59°F1025.1 hPa
41033 38 mi76 min ENE 16 G 23 58°F 60°F1024.1 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 41 mi34 min ENE 16 G 18 62°F 62°F2 ft1023.9 hPa (+2.4)52°F
SAXG1 - Sapelo Island Reserve, GA 42 mi84 min NE 9.9 62°F 1024 hPa (+3.0)42°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 mi28 minE 1510.00 miFair63°F40°F44%1024.3 hPa
Savannah-Hilton Head International Airport, GA15 mi31 minESE 1410.00 miA Few Clouds65°F37°F37%1024.7 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi34 minE 10 G 1710.00 miFair61°F39°F45%1025.4 hPa

Wind History from SVN (wind in knots)
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W12W12--W10W10W9W6W7W8W8W10W7W7W6NW10NW10
2 days agoN7N3NW5NE9N7
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NE10N8N7CalmNE5NE4CalmN5N3N3W3W3W5CalmCalmCalmCalmSW8

Tide / Current Tables for Savannah Sheraton Resort Hotel, Wilmington River, Georgia
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Savannah Sheraton Resort Hotel
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Sat -- 04:54 AM EDT     -1.54 feet Low Tide
Sat -- 07:24 AM EDT     Sunrise
Sat -- 09:21 AM EDT     Moonset
Sat -- 10:57 AM EDT     8.87 feet High Tide
Sat -- 05:07 PM EDT     -1.18 feet Low Tide
Sat -- 07:37 PM EDT     Sunset
Sat -- 10:42 PM EDT     Moonrise
Sat -- 11:27 PM EDT     9.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.46.541.3-0.8-1.5-0.61.64.36.78.38.98.26.64.41.9-0.2-1.2-0.61.23.76.28.19.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Sat -- 03:02 AM EDT     -2.80 knots Max Ebb
Sat -- 05:45 AM EDT     0.01 knots Slack
Sat -- 07:23 AM EDT     Sunrise
Sat -- 08:18 AM EDT     2.61 knots Max Flood
Sat -- 09:20 AM EDT     Moonset
Sat -- 11:53 AM EDT     -0.00 knots Slack
Sat -- 03:07 PM EDT     -2.51 knots Max Ebb
Sat -- 05:55 PM EDT     0.00 knots Slack
Sat -- 07:36 PM EDT     Sunset
Sat -- 08:35 PM EDT     2.65 knots Max Flood
Sat -- 10:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-1.8-2.5-2.8-2.5-1.30.41.92.62.51.91.1-0.1-1.4-2.2-2.5-2.3-1.40.11.62.52.62.21.5

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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 (12,3,4,5)
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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.