Sunday, January17, 2021
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Marine Weather and Tides
Reidsville, 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 7:24AMSunset 5:48PM Sunday January 17, 2021 5:05 AM EST (10:05 UTC) Moonrise 10:39AMMoonset 10:24PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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- 310 Am Est Sun Jan 17 2021
Today..W winds 5 to 10 kt, becoming sw 10 to 15 kt late. Seas 1 to 2 ft.
Tonight..W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Mon..W winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Mon night..NW winds 10 to 15 kt. Seas 2 ft in the evening, then seas 1 foot.
Tue..NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 foot.
Tue night..W winds 5 to 10 kt. Seas 1 foot.
Wed..W winds 5 to 10 kt. Seas 2 ft.
Wed night..W winds 5 to 10 kt. Seas 1 foot.
Thu..SW winds 10 to 15 kt. Seas 2 ft.
Thu night..SW winds 10 to 15 kt. Seas 2 ft. A slight chance of showers.
AMZ300 310 Am Est Sun Jan 17 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail through much of next week. A weak cold front is expected to pass over the region Friday.


7 Day Forecast for Marine Location Near Reidsville, GA
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location: 31.95, -82.15     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 170848 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 348 AM EST Sun Jan 17 2021

SYNOPSIS. High pressure will prevail through much of next week. A weak cold front is expected to pass over the region Friday.

NEAR TERM /THROUGH TONIGHT/. Today: Aloft, southwest flow will prevail ahead of a vigorous shortwave diving out of the Upper Midwest and into the Ohio Valley. At the surface, the forecast area will remain within the larger circulation around a deep area of low pressure centered across eastern Canada with weak high pressure over the Southern Plains and the western Gulf of Mexico. The main forecast issue today will be cloud cover as cirrus increases in density under the influence of a 300mb jet that strengthens to 150+ knots late in the day. The morning will be mostly clear but cirrus will quickly fill in from the southwest through the afternoon. Low level thickness scheme would support temperatures right around 50, but with some weak warm advection we should outperform that a bit. Forecast highs are in the low 50s in most areas, with some mid 50s possible along and south of I-16. West-southwest winds will be elevated today but certainly nothing like Saturday. Gusts to around 20 mph will be possible.

Tonight: The shortwave trough axis will approach the area in the evening, then pass through late in the overnight. Cirrus will peak in the evening and then decrease in coverage through the early morning hours. We will then see an area of increased mid- level clouds pass through late, associated with the trough aloft and a passing weak surface trough/front. We should maintain enough pressure gradient to support weak southwesterly flow, likely preventing temperatures from getting too cold. Forecast lows range from the low 30s inland to the low 40s at the coast.

SHORT TERM /MONDAY THROUGH WEDNESDAY/. Monday through Wednesday: Broad surface high pressure will gradually build/deepen over the Southeast throughout the period. Meanwhile, a deep upper trough will lift as it shifts off the Northeast coast Monday evening. Deeper moisture associated with the trough should remain well to our north. Otherwise, with high pressure and subsidence controlling the region, rain-free conditions are expected through the period. A warming trend is anticipated through Wednesday with max temps increasing by a few degrees each day. Initially highs will be in the mid 50s Monday, increasing to the low/mid 60s by Wednesday. Min temps will generally range in the 30s over the forecast area Monday night, and the upper 30s Tuesday night.

LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/. Surface high pressure will begin to weaken Thursday as broad low pressure tracks over Great Lakes region and into the Northeast US. Gradual coupling of the polar and subtropical jet will produce a zonal jet streak over the Ohio Valley/Mid Atlantic states. Upper divergence in the right entrance region of the jet will spawn a surface low over TX that will propagate eastward toward the Carolinas. A weak, slow-moving cold front associated with the low approaches the region from the west Friday. Showers ahead/along the front are possible Friday/Saturday. Thereafter, high pressure is expected to build in the wake of the front. Slightly above normal temps will persist Thursday and Friday with highs in the 60s, whereas Saturday temps should return to near normal with the passage of the front.

AVIATION /08Z SUNDAY THROUGH THURSDAY/. VFR conditions will prevail at KCHS and KSAV through 06z Monday.

Extended Aviation Outlook: VFR expected to prevail.

MARINE. Today and tonight: West-southwest winds will prevail today, with most of the local waters topping out around 15 knots. The strongest winds will be in the Charleston County waters where up to 15-20 knots will be possible in the afternoon. Charleston Harbor should also see frequent gusts around 20 knots this afternoon. Overnight, the gradient will tighten modestly and winds will turn more westerly. Wind speeds will increase into the 15-20 knot range for all zones, and we could even see gusts to 25 knots in the Charleston County waters and the outer Georgia waters. A Small Craft Advisory has not been issued for these areas as of yet, but could be needed later today. Seas will average 1-3 feet today, then increase tonight to up to 4 feet in the nearshore waters and up to 5 feet in the outer waters.

Monday through Friday: High pressure will spread into the region from the west. Elevated westerly winds will continue through Monday. Small Craft Advisories could be needed for portions of the waters due to frequent 25 kt gusts. Seas will range from 2-4 ft with some possible 5 footers in the outer GA waters Monday. Thereafter, benign conditions anticipated (1-2 ft seas and W/SW winds less than 15 kt) until Friday when another WSW wind surge is anticipated.

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



NEAR TERM . BSH SHORT TERM . BRM LONG TERM . BRM AVIATION . BSH/BRM MARINE . BSH/BRM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 58 mi65 min W 1.9 36°F 1016 hPa (-1.0)33°F
FPKG1 - 8670870 - Fort Pulaski, GA 66 mi47 min 38°F 50°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 78 mi75 min WNW 5.8 G 7.8 47°F 55°F1 ft1016.3 hPa (+0.0)31°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Vidalia, Vidalia Municipal Airport, GA21 mi70 minN 010.00 miFair30°F27°F86%1016.6 hPa
Claxton Evans County Airport, GA23 mi70 minN 010.00 miFair29°F28°F96%1016.6 hPa

Link to 5 minute data for KVDI

Wind History from VDI (wind in knots)
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W3CalmSW3CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoS4S10S8S6S7S10
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2 days agoSW3CalmCalmCalmW3NW8W10W7NW8SW8W6SW8SW7SW5CalmCalmSW3SW3S3CalmCalmCalmCalmS4

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
Click for Map
Sun -- 01:58 AM EST     0.97 feet High Tide
Sun -- 07:25 AM EST     Sunrise
Sun -- 09:14 AM EST     -0.01 feet Low Tide
Sun -- 10:35 AM EST     Moonrise
Sun -- 02:27 PM EST     1.03 feet High Tide
Sun -- 05:45 PM EST     Sunset
Sun -- 09:47 PM EST     -0.01 feet Low Tide
Sun -- 10:21 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.910.90.80.60.40.20.1-00.10.30.60.9110.90.80.60.40.20-00.1

Tide / Current Tables for Belfast, Belfast River, Georgia
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Belfast
Click for Map
Sun -- 12:01 AM EST     7.27 feet High Tide
Sun -- 05:59 AM EST     -0.07 feet Low Tide
Sun -- 07:25 AM EST     Sunrise
Sun -- 10:35 AM EST     Moonrise
Sun -- 12:31 PM EST     7.75 feet High Tide
Sun -- 05:45 PM EST     Sunset
Sun -- 06:32 PM EST     -0.06 feet Low Tide
Sun -- 10:21 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.36.85.63.92.10.5-0.10.51.93.75.46.87.67.66.85.23.31.40.10.112.64.35.8

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




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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.