Thursday, October1, 2020
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Marine Weather and Tides
Henderson, GA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:18AMSunset 7:10PM Thursday October 1, 2020 5:52 PM EDT (21:52 UTC) Moonrise 6:27PMMoonset 5:57AM Illumination 100% Phase: Full Moon; Moon at 15 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- 334 Pm Edt Thu Oct 1 2020
Tonight..SW winds 5 to 10 kt, becoming W 15 kt late. Seas 2 to 3 ft.
Fri..N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri night..NE winds 10 to 15 kt. Seas 2 to 3 ft.
Sat..NE winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon.
Sat night..NE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A chance of showers.
Sun..NE winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A chance of showers.
Sun night..NE winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of showers.
Mon..N winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Mon night..NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Tue..NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Tue night..NE winds 10 kt. Seas 3 to 4 ft. A slight chance of showers.
AMZ300 334 Pm Edt Thu Oct 1 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A dry cold front will shift across the area tonight, followed by high pressure through Saturday. A coastal trough will pass near the area early next week, before high pressure returns during the middle of next week.


7 Day Forecast for Marine Location Near Henderson, GA
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location: 32.03, -81.22     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 012006 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 406 PM EDT Thu Oct 1 2020

SYNOPSIS. A dry cold front will shift across the area tonight, followed by high pressure through Saturday. A coastal trough will pass near the area early next week, before high pressure returns during the middle of next week.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. Tonight: A highly amplified pattern will dominant the CONUS, featuring a deep and broad trough in the east, with ridging over the west. A strong short wave embedded within the longer wave pattern will drop through the Ohio Valley and pushes a cold front into our northwest tier around midnight. The front then steadily advances southeast and shifts off the coast before daybreak. Skies will be clear to mostly clear, with no more than few to scattered cirrus clouds associated with the upper jet, that arrive from the southwest. The front itself will come through void of any rain, and at most, maybe a few stratocumulus clouds. The most "notable" change will be a shifting of winds to the northwest, with a slight increase as sunrise approaches.

Cool advection behind the front will get min temps down to mid and upper 50s most places, with actual lows to occur around 8 am Friday.

Lake Winds: Good mixing will develop atop the relatively warmer waters of Lake Moultrie late tonight, which continue into early Friday. Conditions at this time appear too marginal for a Lake Wind Advisory. We will continue to monitor.

SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/. Surface high pressure will build into the area on Friday and prevail through Saturday. Aloft, a broad mid level trough will encompass the eastern CONUS. Deep dry air in place will preclude any rainfall. Expect mostly clear skies and cool temperatures. Highs both days will top out in the mid 70s across most locations, while lows fall into the 50s. Some spots inland could even drop into the 40s Friday night.

High pressure will weaken on Sunday as a coastal trough develops and sharpens offshore. Moisture will increase, particularly along the coast, and will bring rain chances back in the forecast. The question will be how far inland showers penetrate. Some models keep land areas dry with the focus for showers remaining over the coastal waters, while others bring activity onshore. Rain chances were increased a bit but remain capped in the 20-40% range. High temperatures will be in the low to mid 70s.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/. A coastal trough/front offshore should produce few to scattered showers along coastal areas Sunday night into early Monday while areas inland remain drier under the influence of high pressure. Sfc high pressure will then generally prevail across the area through much of next week while a mid-lvl trough of low pressure advances off the Mid-Atlantic and Northeast coasts and results in a mainly zonal flow aloft by the middle of next week. Given the pattern, temps should slowly warm each day as a north/northeast wind early week becomes more onshore during the second half of the week. In general, highs will range in the mid/upper 70s Monday and Tuesday, then upper 70s to lower 80s Wednesday and Thursday. Overnight lows will also show a slight warming trend with lows in the mid/upper 50s away from the coast Monday night, becoming upper 50s/lower 60s away from the coast by Wednesday night.

AVIATION /20Z THURSDAY THROUGH TUESDAY/. VFR through 18Z Friday at KCHS and KSAV. Northerly winds could become a little gusty Friday morning in wake of a dry cold front that shifts through late tonight.

Extended Aviation Outlook: VFR is expected through Saturday. Brief flight restrictions are possible Sunday into early Monday due to showers occurring with a passing coastal trough.

MARINE. Tonight: Weak high pressure extending across the area this evening will give way to an upstream cold front, that pushes through the coastal waters around 3-5 am. Out ahead of the front, S and SW winds will hold at or below 10 or 12 kt, before cool advection causes winds to increase a good 5 kt or more thereafter. Seas of 2 to 3 feet this evening will build another foot or so behind the front.

Friday through Tuesday: High pressure will build in on Friday and prevail through Saturday. A coastal trough will then develop along the Southeast coast before lifting away from the area early next week. North to northeast winds will remain fairly elevated through much of the period, however speeds are expected to stay below Small Craft Advisory criteria at this time. Seas will average 2-5 feet, highest beyond 20 nm. Will have to watch the potential for some 6 ft seas to sneak into the outer Georgia waters at times.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.



NEAR TERM . SHORT TERM . ETM LONG TERM . DPB AVIATION . MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 17 mi53 min SSE 7 G 9.9 76°F 76°F1014.6 hPa (-1.9)
SAXG1 - Sapelo Island Reserve, GA 42 mi53 min SE 6 78°F 1014 hPa (-2.0)59°F
41033 46 mi45 min SSW 7.8 G 12 74°F 77°F1014 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 47 mi63 min SSE 1.9 G 3.9 74°F 80°F2 ft1014.6 hPa (-1.9)53°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, GA4 mi57 minWSW 310.00 miFair82°F55°F41%1013.2 hPa
Savannah-Hilton Head International Airport, GA8 mi60 minW 410.00 miA Few Clouds82°F55°F41%1014.1 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA21 mi57 minWSW 410.00 miFair82°F56°F42%1013.5 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrNW8W4--CalmCalmW3CalmW3CalmCalmCalmCalmCalmW3W3CalmW5W5SW3N4CalmSW4W4W3
1 day agoNW9CalmW3W4W7W9W7W4W4W5W6W5W3CalmW3NW5NW8NW8N5NW4W7NW9
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2 days agoS7S5SW4CalmE5CalmCalmCalmCalmCalmCalmCalmS3CalmW3W3SW3W6SW5SW5SW6SW8SW9NW14
G30

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
Click for Map
Thu -- 06:54 AM EDT     0.07 feet Low Tide
Thu -- 06:57 AM EDT     Moonset
Thu -- 07:19 AM EDT     Sunrise
Thu -- 11:43 AM EDT     1.14 feet High Tide
Thu -- 05:06 PM EDT     Full Moon
Thu -- 07:09 PM EDT     Sunset
Thu -- 07:11 PM EDT     0.10 feet Low Tide
Thu -- 07:27 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.10.90.70.50.30.10.10.20.50.91.11.11.10.90.70.50.30.20.10.20.40.71

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Thu -- 12:58 AM EDT     -2.10 knots Max Ebb
Thu -- 03:26 AM EDT     0.01 knots Slack
Thu -- 06:02 AM EDT     2.02 knots Max Flood
Thu -- 06:56 AM EDT     Moonset
Thu -- 07:17 AM EDT     Sunrise
Thu -- 09:39 AM EDT     -0.00 knots Slack
Thu -- 01:18 PM EDT     -2.02 knots Max Ebb
Thu -- 03:54 PM EDT     0.00 knots Slack
Thu -- 05:06 PM EDT     Full Moon
Thu -- 06:33 PM EDT     1.80 knots Max Flood
Thu -- 07:07 PM EDT     Sunset
Thu -- 07:25 PM EDT     Moonrise
Thu -- 10:08 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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-1.9-2.1-1.7-0.60.71.721.91.40.7-0.4-1.2-1.7-2-1.9-1.10.11.21.71.81.61.10.2-0.8

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Charleston, SC
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