Saturday, December7, 2019
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Marine Weather and Tides
Flemington, GA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:12AMSunset 5:23PM Saturday December 7, 2019 9:51 AM EST (14:51 UTC) Moonrise 2:46PMMoonset 2:42AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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- 639 Am Est Sat Dec 7 2019
.small craft advisory in effect from 6 pm est this evening through Sunday evening...
Today..NE winds 10 to 15 kt with gusts to 20 kt. Seas 2 ft, building to 3 to 4 ft this afternoon.
Tonight..NE winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight.
Sun..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft.
Sun night..NE winds 15 to 20 kt, becoming E 5 to 10 kt after midnight. Seas 3 to 4 ft.
Mon..S winds 5 to 10 kt. Seas 3 to 4 ft. Patchy fog in the afternoon.
Mon night..S winds 10 kt. Seas 2 to 3 ft. Patchy fog.
Tue..SW winds 10 to 15 kt. Seas 3 to 4 ft. Patchy fog.
Tue night..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
Wed..N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
Wed night..N winds 20 to 25 kt. Seas 4 to 6 ft. A slight chance of showers.
AMZ300 639 Am Est Sat Dec 7 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build north of the area through tonight, with the nearby trough offshore Sunday. A warm front will lift north of the region Monday, before a cold front sweeps through Tuesday night. Strong high pressure will return Wednesday, before giving way to a storm system late next week.


7 Day Forecast for Marine Location Near Flemington, GA
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location: 31.95, -81.47     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 071141 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 641 AM EST Sat Dec 7 2019

SYNOPSIS. High pressure will build north of the area through tonight, with the nearby trough offshore Sunday. A warm front will lift north of the region Monday, before a cold front sweeps through Tuesday night. Strong high pressure will return Wednesday, before giving way to a storm system late next week.

NEAR TERM /THROUGH TONIGHT/. Today: Surface high pressure across the Ohio Valley region this morning will build east into New England today and begin the familiar cool-season wedging southward to the lee of the mountains. Weak ridging aloft will be building to our west and subtle late- day mid level pressure rises arriving by late afternoon. While dry weather and slowly building northeast breezes are in the forecast, sky cover is a bit on the tricky side today. It appears that the mid level moisture decreases by late morning into this afternoon. Partly cloudy skies could certainly become mostly sunny across much of our SC forecast area today while clouds over GA along and south of I-16 take a while longer to scatter out. Highs around the mid 60s for much of the area.

Tonight: A solid wedge pattern will persist while ridging and NVA aloft strengthen. Dry weather will be accompanied by light northeast winds overnight, except gusty winds along the beaches and barrier islands where the pressure gradient will be packed. Lows will range from the upper 30s north the mid 40s across a good portion of southeast GA.

SHORT TERM /SUNDAY THROUGH TUESDAY/. Sunday: Although the parent high that is initially over New England at the start of the period will pass into the northwest Atlantic, the inland wedge to the lee of the Appalachians over the Southeast will remain in place as a nearby offshore trough sharpens nearby. Low level moisture will increase as it becomes trapped beneath the wedge inversion, so morning sunshine will quickly give way to increasing cloudiness as skies turn out mostly cloudy to cloudy in the afternoon. Lift generated by the proximity to the coastal trough and and increasing isentropic upglide will lead to isolated to scattered showers late in the day over the Charleston tri-county region. A cool northeast synoptic flow under these conditions won't allow for temps to reach any higher than near 60F north and lower- middle 60s elsewhere.

Monday: A zonal west-southwest flow aloft will exist overhead, as the coastal trough has already transitioned into a warm front and will be north of the forecast region. Atlantic high pressure will take it's place as it expands in from the ocean. Upstream we find a cold front that extends from the upper Midwest and Great Lakes region to Texas. It currently looks like nothing to contribute to any showers, so we have a rainfree forecast. Strong warm advection with H85 temps peaking at 11-13C will support max temps at least 8- 10F above climo. Sea fog could form over the nearby shelf waters during the day or at night, and push onshore over the coastal corridor during Monday night.

Tuesday: The region will be situated between an abnormally strong mid level (500 mb) anticyclone with 590 meter heights over the Bahamas, and a broad trough that covers a good portion of the eastern half of the nation. At the surface we find a cold front crossing the Appalachians in the afternoon, but still outside the forecast area by nightfall. Both our H5 heights and H85 temps are near or above the 90th percentile, which will boost temps to near record levels. (See CLIMATE section below). The bulk of the convection stays off to the west-northwest in closer proximity to the better dynamics, so we have mainly 20/30 PoP's. Instability in limited, but shear is strong, so we can't rule out a low end risk of t-storms.

LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/. The mid and late week period looks to be volatile and potentially wet.

The cold front will pass through early in the extended period, bringing with it showers and maybe a few t-storms Tuesday night into early Wednesday. A strengthening and robust arctic high will be plunging through the upper Mississippi Valley Wednesday, then slides into the Northeast Thursday, and off New England thereafter. The southern part of this high wedges into the area for a part of the latter half of the week, as cyclogenesis occurs in the northern Gulf of Mexico Thursday and Friday. The resulting low tracks over the Southeast next Saturday, likely passing near or just inland from the local area. Over-running rains will spread in during the late week timeframe, with the potential for heavy rainfall and even a few t- storms to to occur with strong dynamics available. In addition, windy weather is expected over the coastal counties with a tight gradient in place.

The core of arctic air will stay to our north, but even so, temps will be below normal through late in the week.

AVIATION /12Z SATURDAY THROUGH WEDNESDAY/. VFR at both KSAV/KCHS through 12Z Sunday.

Extended Aviation Outlook: Flight restrictions possible in night time and morning fog/stratus Sunday night through Tuesday. Additional flight restrictions can occur due to showers in association with a cold front Tuesday night.

MARINE. Today, high pressure will build north of the waters and begin to wedge southward to the lee of the mountains. Pressure gradients are forecast to tighten across the waters with increasing chances for pinching gradients tonight. We backed off on SCA start times for parts of the SC waters and outer GA waters this morning, given the latest guidance. We still expect winds and seas to increase substantially later today, with conditions reaching SCA criteria in these zones after mid afternoon. Elsewhere, SCA remain in effect tonight for all waters except in the CHS Harbor. Winds will increase to near 20 kt with gusts 25-30 kt offshore. Seas are expected to build to 4-6 ft near shore and 6-8 ft beyond 20 NM off the GA coast tonight.

Sunday and Sunday night: There remains a packed gradient between the inland wedge of high pressure and nearby inverted trough, leading to a continuation of the ongoing Small Craft Advisories for Sunday. Conditions will begin improving Sunday night as the trough transitions into a northward moving warm front.

Monday through Tuesday: In wake of the warm front, Atlantic high pressure will expand across the local waters, keeping an upstream cold front from reaching the area. A steady S-SW flow will prevail, with fluctuations in speeds during this time, but for the most part sub-advisory levels will occur.

Wednesday through Thursday: Winds and seas will be on the increase again as a 1035-1040 mb arctic high builds to the north. the gradient could increase to as much as 3-4 mb from north to south over the local waters, leading to solid Small Craft Advisories and even the potential for Gale Warnings.

Sea Fog: An abnormally warm and humid air mass will move in Monday and Tuesday, with a S-SW flow to occur. Provided that winds aren't too strong, we anticipate the formation of sea fog across at least the 0-20 nm waters and at times even into Charleston Harbor. Both our confidence and the probabilities are sufficient enough to add sea fog to the Hazardous Weather Outlook.

TIDES/COASTAL FLOODING. Astronomical high tides will already be in effect during the middle and latter part of next week, with the full moon on Thursday. With strong northeasterly winds, we anticipate that coastal flooding and beach erosion will become problem. Details will be worked out as we draw closer to the event.

CLIMATE. Record Max Temps December 10th . KCHS . 82F set in 1972. KCXM . 79F set in 1943. KSAV . 82F set in 1972.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory from 6 PM this evening to 7 PM EST Sunday for AMZ352-354. Small Craft Advisory from 2 PM this afternoon to 5 AM EST Monday for AMZ374. Small Craft Advisory from 2 PM this afternoon to 7 PM EST Sunday for AMZ350.

NEAR TERM . SHORT TERM . LONG TERM . AVIATION . MARINE . TIDES/COASTAL FLOODING . CLIMATE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 31 mi57 min NE 8 G 11 56°F 57°F1023.8 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 50 mi61 min NE 9.7 G 12 60°F 62°F2 ft1023.3 hPa (+2.1)56°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA7 mi55 minNNE 410.00 miOvercast54°F48°F79%1023.3 hPa
Hunter U. S. Army Airfield, GA18 mi55 minNNE 510.00 miOvercast55°F48°F78%1023.3 hPa
Savannah-Hilton Head International Airport, GA19 mi58 minNNE 510.00 miMostly Cloudy55°F48°F80%1023.9 hPa

Link to 5 minute data for KLHW

Wind History from LHW (wind in knots)
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Last 24hrCalmCalmCalmNW3W8W3W3CalmCalmNW4N3N3CalmCalmNE3CalmCalmCalmCalmCalmCalmCalmNE3NE4
1 day agoN9N7NW4CalmCalmCalmW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW12W12W9W11W12
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Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
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Sat -- 02:22 AM EST     0.12 feet Low Tide
Sat -- 02:41 AM EST     Moonset
Sat -- 07:12 AM EST     Sunrise
Sat -- 07:20 AM EST     0.98 feet High Tide
Sat -- 02:45 PM EST     Moonrise
Sat -- 02:51 PM EST     0.18 feet Low Tide
Sat -- 05:20 PM EST     Sunset
Sat -- 07:46 PM EST     0.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.10.20.30.60.8110.90.80.60.40.30.20.20.30.50.70.90.90.90.80.6

Tide / Current Tables for Belfast, Belfast River, Georgia
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Belfast
Click for Map
Sat -- 02:41 AM EST     Moonset
Sat -- 05:24 AM EST     7.41 feet High Tide
Sat -- 07:12 AM EST     Sunrise
Sat -- 11:36 AM EST     1.45 feet Low Tide
Sat -- 02:45 PM EST     Moonrise
Sat -- 05:21 PM EST     Sunset
Sat -- 05:50 PM EST     7.15 feet High Tide
Sat -- 11:54 PM EST     0.69 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.32.33.85.46.67.37.36.45.23.82.51.61.52.23.34.766.97.16.65.43.92.31.1

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 (9,2,3,4)
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Ground Weather Radar Station Charleston, SC
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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 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.