Saturday, July4, 2020
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Marine Weather and Tides
Riceboro, GA

Version 3.4
NOTICE
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 6:24AMSunset 8:37PM Saturday July 4, 2020 9:10 PM EDT (01:10 UTC) Moonrise 7:25PMMoonset 4:42AM Illumination 100% 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- 845 Pm Edt Sat Jul 4 2020
Tonight..SE winds 5 to 10 kt. Seas 2 ft.
Sun..SE winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Sun night..S winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Mon..S winds 5 to 10 kt. Seas 2 ft. Showers and tstms likely.
Mon night..SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
Tue..SW winds 5 to 10 kt. Seas 2 ft. Showers and tstms.
Tue night..SW winds 10 kt. Seas 2 ft. Showers and tstms.
Wed..SW winds 10 kt. Seas 2 ft. A chance of showers and tstms.
Wed night..W winds 10 kt. Seas 2 ft. A chance of showers and tstms.
Thu..W winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms.
Thu night..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 845 Pm Edt Sat Jul 4 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A stationary front will linger south of the area through the weekend, then lift back northward by early next week. Low pressure will then bring unsettled weather to the region for much of next week.


7 Day Forecast for Marine Location Near Riceboro, GA
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location: 31.54, -81.26     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 050036 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 836 PM EDT Sat Jul 4 2020

SYNOPSIS. A stationary front will linger south of the area through the weekend, then lift back northward by early next week. Low pressure will then bring unsettled weather to the region for much of next week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. As of 835 PM: KCLX indicated that the sea breeze has pushed west of the forecast area, with no showers over the CWA. I will update the forecast to remove the mention of showers this evening and make minor temperature tweaks.

As of 6 PM: KCLX detected isolated showers along a sea breeze pushing inland across Berkeley and Dorchester Counties. The latest run of the HRRR indicates that a few showers will develop along the breeze across SE GA over the next hour or two. Given the state of the Cu field west of the sea breeze and latest radar trends, I will update the forecast to add SCHC PoPs to the forecast through the early evening.

Previous Discussion: A weak mid-level low will be over the Lower MS Valley, causing northwest flow overhead. At the surface, weak high pressure across our area will keep a stationary front located to our south. Though, models indicate moisture and some lift associated with the front should approach our southernmost locations late tonight. Hence, we have slight chance POPs for McIntosh County and vicinity. A rumble of thunder also isn't out of the question given the instability in place. But nothing severe. Elsewhere, plenty of dry air in place should lead to a rain free night. Otherwise, light onshore flow is expected to generate some low clouds later tonight. Though, these shouldn't cause visibility issues outside of the smoke from the fireworks. Lows will mostly be in the 70s.

SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY/. All models continue to indicate a more active/unsettled pattern to develop during this period. A broad upper low over the lower MS River valley will slowly move northeastward toward the region through early next week. As this system moves toward the area, it brings higher values of deep layer moisture and instability. This will result in an increasing trend in PoPs.

Sunday will begin the transition toward increasing PoPs, starting from south to north. Have kept chance PoPs mainly over the GA region. Monday and Tuesday, models continue to go likely to categorical PoPs. A little uncomfortable going with likely to categorical PoPs that far out, but models have been consistently trending in that direction for the last several runs. Rainfall totals through Tuesday expected to be 1-2 inches south of the Savannah River, and 1/2-1 inch north of the river.

High temperatures are expected to be near normal on Sunday, then slightly below normal for Monday and Tuesday due to increased cloud cover and PoPs. Lows in the lower to mid 70s.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/. Low pressure is forecast to linger in the region mid to late week. There are still large discrepancies between models regarding the position and evolution of the low, however the overall pattern favors higher than normal rain chances, especially during the mid- week time frame. High temperatures will average slightly cooler than normal, while lows stay a couple degrees above normal.

AVIATION /01Z SUNDAY THROUGH THURSDAY/. VFR. Smoke from fireworks should remain localized and are not expected to impact the terminals.

Extended Aviation Outlook: Sunday: Mainly VFR conditions expected. Monday through Thursday: Periods of flight restrictions likely, especially during the afternoon/early evening within scattered to numerous showers and thunderstorms.

MARINE. Tonight: Weak high pressure over the area will keep a stationary front well to our south. The weak pressure gradient should keep sustained winds 10 kt or less. Seas will be 1-2 ft.

LONG TERM MARINE . SUNDAY THROUGH THURSDAY . No highlights expected Sunday through Wednesday with generally southerly winds of 15 knots or less and seas 3 feet or less. Scattered to numerous showers and thunderstorms expected. Models indicate a developing surface low later Wednesday and Thursday, possibly tracking inland/well west of the waters. The track and intensity of this low pressure system will impact how strong the winds will get. Right now, the latest model trends indicate southwesterly winds by Thursday, possibly increasing to the 15 to 20 knots. However, due to uncertainty, the forecast for this period was left unchanged.

TIDES/COASTAL FLOODING. A Coastal Flood Advisory is in effect for portions of the SC coast for this evening's high tide.

Astronomical influences will maintain higher than normal tide levels into early next week. Minor coastal flooding will be possible around the time of the evening high tides, primarily along the South Carolina coast. In addition, the risk for heavy rain early next week will only add to any tidal flooding.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . Coastal Flood Advisory until 10 PM EDT this evening for SCZ048>050. MARINE . None.

NEAR TERM . NED SHORT TERM . LONG TERM . ETM AVIATION . BRM MARINE . TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 9 mi71 min SE 5.1 84°F 1013 hPa (+0.0)75°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 23 mi81 min SSE 7.8 G 9.7 83°F 84°F1 ft1012.2 hPa (-0.8)75°F
FPKG1 - 8670870 - Fort Pulaski, GA 39 mi53 min SSE 5.1 G 8 82°F 84°F1013.5 hPa

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick / Glynco, GA22 mi36 minSE 710.00 miPartly Cloudy82°F74°F78%1012.5 hPa

Link to 5 minute data for KBQK

Wind History from BQK (wind in knots)
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Last 24hrNE3CalmCalmCalmCalmCalmCalmNW3N3CalmCalmNE5E7NE7E8E10
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1 day agoW6W3SW4SW4N5CalmCalmCalmCalmN6CalmNE3NE7E5E9E12NE11NE12E12
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Tide / Current Tables for Dog Hammock, Sapelo River, Georgia
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Dog Hammock
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Sat -- 02:37 AM EDT     -0.35 feet Low Tide
Sat -- 05:42 AM EDT     Moonset
Sat -- 06:25 AM EDT     Sunrise
Sat -- 08:29 AM EDT     7.16 feet High Tide
Sat -- 02:37 PM EDT     -0.50 feet Low Tide
Sat -- 08:24 PM EDT     Moonrise
Sat -- 08:33 PM EDT     Sunset
Sat -- 09:06 PM EDT     8.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.51.3-0.1-0.30.72.54.56.1776.14.62.81-0.3-0.40.62.44.66.78.18.78.37.1

Tide / Current Tables for South Newport River, Georgia
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South Newport River
Click for Map
Sat -- 03:02 AM EDT     -0.42 feet Low Tide
Sat -- 05:42 AM EDT     Moonset
Sat -- 06:25 AM EDT     Sunrise
Sat -- 08:33 AM EDT     7.44 feet High Tide
Sat -- 03:02 PM EDT     -0.60 feet Low Tide
Sat -- 08:24 PM EDT     Moonrise
Sat -- 08:33 PM EDT     Sunset
Sat -- 09:10 PM EDT     9.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.220.3-0.40.224.26.17.37.36.55.13.41.50-0.601.84.26.58.398.77.6

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.
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Wind Forecast for Charleston, SC (21,6,7,8)
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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 numerous 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.