Saturday, January18, 2020
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Marine Weather and Tides
Reidsville, 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 7:24AMSunset 5:48PM Saturday January 18, 2020 10:32 AM EST (15:32 UTC) Moonrise 1:30AMMoonset 12:57PM Illumination 41% Phase: Third Quarter Moon; Moon at 23 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- 1015 Am Est Sat Jan 18 2020
Rest of today..S winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers late this morning.
Tonight..S winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers in the evening, then a chance of showers after midnight.
Sun..SW winds 10 to 15 kt with gusts to 20 kt, becoming W in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. A chance of showers.
Sun night..NW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Mon..N winds 10 to 15 kt. Seas 2 to 3 ft.
Mon night..N winds 10 to 15 kt. Seas 2 to 3 ft.
Tue..N winds 15 to 20 kt. Seas 3 to 4 ft.
Tue night..N winds 15 to 20 kt. Seas 3 to 4 ft.
Wed..NE winds 15 to 20 kt. Seas 4 to 6 ft.
Wed night..NE winds 15 to 20 kt. Seas 4 to 6 ft.
AMZ300 1015 Am Est Sat Jan 18 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A warm front will lift through the region later today and this evening. A cold front is expected to move through late tonight into Sunday, followed by cold and dry high pressure into the middle of next week. A low pressure system could impact the region next weekend.


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 181213 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 713 AM EST Sat Jan 18 2020

SYNOPSIS. A warm front will lift through the region later today and this evening. A cold front is expected to move through late tonight into Sunday, followed by cold and dry high pressure into the middle of next week. A low pressure system could impact the region next weekend.

NEAR TERM /THROUGH TONIGHT/. Today: The pattern will be somewhat complex in the lower levels today as models indicate a developing coastal trough tending to push onshore by this afternoon with low level veering flow expected inland from the coastal front as the wedge pattern erodes with time today. We tended to favor the NAM over the GFS and ECMWF this morning as the global models appear fast and flat with the mesoscale features. We leaned toward a cooler solution with considerable layered clouds around the region today. Both the RAP and HRRR show the coastal front washing out instead of pushing inland, while most of the veering at the surface will occur after mid afternoon. Rain chances along and inland from I-95 look very low today as mid level ridging slides offshore. We maintained mainly slight chance POPs for light showers that may develop along the SC coast closer to the coastal trough.

Tonight: An ill-defined warm front will lift north of the area early this evening and surface flow is forecast to veer to SW ahead of an approaching cold front. Warming temps along coastal zones should set the stage for increasing SW winds in the 10-15 mph range this evening. If warm temps become realized, there could be some gusts over 20 mph tonight. Ahead of the front, deeper moisture profiles appear to shift through S GA with upper forcing rather unfocused through the overnight. We generally maintained good chance POPs, rainfall amounts should be less than a tenth of an inch. Temps will rise ahead of the front with readings in the lower 60s overnight at many areas.

SHORT TERM /SUNDAY THROUGH TUESDAY/. Sunday: A cold front will progress through the area during morning hours, favoring scattered showers across much of the area (highest coverage along the Southeast Georgia coast). Cool and dry high pressure will then build in wake of the front, quickly ending precip from northwest to southeast during early afternoon hours and resulting in a downward trend of temps during mid-afternoon hours through the evening. In general, highs should range in the low/mid 60s ahead of fropa early. Conditions will remain dry through the overnight period while colder air arrives from the west-northwest. In general, temps should cool into the low 30s inland to mid/upper 30s closer to the coast.

Monday and Tuesday: Dry and cold high pressure will prevail at the sfc below a broad trough of low pressure expanding across the East Conus. The pattern will result in noticeably colder conditions on Monday with temps some 10-15 degrees lower than the previous day. In general, high temps will struggle to reach the upper 40s across northern areas and lower 50s across Southeast Georgia. Temps will be chilly Monday night, dipping into the upper 20s away from the coast to low/mid 30s along the beaches. Tuesday afternoon temps should be even colder as the center of a mid-lvl low shifts across the Southeast while northeast sfc winds prevail at the sfc. Highs should only reach the mid 40s across Southeast South Carolina and upper 40s across Southeast Georgia.

LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/. A large area of sfc high pressure will dominate much of the East Conus with its center shifting across the Midwest midweek, then into the Northeast by Friday. Aloft, a large trough of low pressure will begin to shift offshore midweek, setting up a period of mid-lvl ridging through late week. The pattern will favor cold temps Tuesday night with lows in the mid/upper 20s away from the coast, before conditions gradually warm as winds become more directly onshore through late week. Temps will likely warm into the low/mid 50s Wednesday, then mid 50s well inland to upper 50s/lower 60s on Thursday. On Friday, onshore winds should prevail as high pressure shifts off the East Coast. A developing coastal trough could also bring some showers onshore. In general, temps should approach the mid/upper 60s. Chances of precip should increase during the weekend as low pressure over the Gulf of Mexico merges with a cold front approaching from the west on Saturday. Scattered to potentially numerous showers are possible during peak forcing/moisture across the area Saturday afternoon.

AVIATION /12Z SATURDAY THROUGH WEDNESDAY/. MVFR cigs are possible around the SC corridor from mid morning through mid afternoon as a coastal trough nudges near shore. At KSAV, the chances for lower cigs should be a bit lower, but still possible. This evening, VFR conditions at both terminals likely per latest forecast soundings and time/height cross sections. Later tonight, scattered showers are expected ahead of a cold front. The timing looks late enough to allow the next TAF cycles to include shower potential as well as cig flight restrictions.

Extended Aviation Outlook: Flight restrictions are possible at both CHS and SAV Sunday morning during showers associated with a passing cold front. VFR conditions are then expected at both terminals Sunday afternoon through the middle of next week.

MARINE. The gradient was still pinching off the SC coast with ENE flow in the 15-20 kt range and seas likely in the 5-6 ft range. At Grays Reef NMS, winds were decreasing as a coastal front tightens. We extended near shore SC SCAs to mid morning as seas remain elevated. We allowed the near shore GA SCA to come down at 7 AM EDT. During today, marine conditions should gradually improve as the gradient becomes weaker. Winds may be slow to veer initially, directions will become S to SW by this evening. We may need to issue another SCA for Charleston Waters later tonight as seas build offshore with stronger flow expected out near the Gulf Stream. Since it will be marginal, will allow for 12Z model run data before any SCA re-issue considerations. A cold front will approach from the west late but suspect winds will be gustier right along the land/sea interface than over the coldest shelf waters.

Sunday through Thursday: A cold front will shift across coastal waters Sunday, turning southwest winds to west-northwest in its wake. A Small Craft Advisory will be ongoing across offshore Georgia waters through much of the day and could be needed across northern South Carolina waters off the Charleston County Coast due to lingering 6 ft seas. Conditions should be somewhat elevated heading into Monday as the pressure gradient remains enhanced and northerly winds rush in colder air across the waters. Strongest cold air advection should occur Monday night through Wednesday when a mid-lvl low shifts across the region. Small Craft Advisories are likely for at least a portion of the coastal waters during this period and could linger into Thursday, especially across offshore Georgia waters where northeast winds support the continuation of higher seas. In general, north-northeast wind speeds should range between 25-30 kts at times Tuesday and Wednesday while seas build to 4-6 ft across nearshore waters and 6-9 ft across offshore waters.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory until 10 AM EST this morning for AMZ350- 352. Small Craft Advisory until 6 PM EST Sunday for AMZ374.

NEAR TERM . SHORT TERM . DPB 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 66 mi51 min 51°F 59°F1030.9 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 78 mi43 min SE 3.9 G 5.8 62°F 60°F5 ft1029.4 hPa (+0.0)58°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 mi58 minENE 510.00 miPartly Cloudy50°F37°F62%1030.8 hPa
Claxton Evans County Airport, GA23 mi58 minENE 57.00 miPartly Cloudy51°F40°F66%1030.8 hPa

Link to 5 minute data for KVDI

Wind History from VDI (wind in knots)
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1 day agoNW7NW8NW9
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NW5NW6N6N4Calm--NE7NE4NE6NE7N6N5NE5NE4NE3NE4NE5NE9NE10
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2 days agoW5W5W5SW3SW6SW6W5CalmCalmCalmCalmSW3SW3SW3SW3SW3CalmCalmW4W5W6W6W7W9

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
Click for Map
Sat -- 12:13 AM EST     -0.04 feet Low Tide
Sat -- 01:26 AM EST     Moonrise
Sat -- 05:30 AM EST     1.05 feet High Tide
Sat -- 07:25 AM EST     Sunrise
Sat -- 12:53 PM EST     Moonset
Sat -- 01:00 PM EST     0.02 feet Low Tide
Sat -- 05:44 PM EST     0.98 feet High Tide
Sat -- 05:45 PM EST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-000.30.60.81110.80.60.40.20.100.10.40.70.910.90.80.60.40.2

Tide / Current Tables for Belfast, Belfast River, Georgia
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Belfast
Click for Map
Sat -- 01:26 AM EST     Moonrise
Sat -- 03:34 AM EST     7.88 feet High Tide
Sat -- 07:25 AM EST     Sunrise
Sat -- 09:45 AM EST     0.16 feet Low Tide
Sat -- 12:54 PM EST     Moonset
Sat -- 03:48 PM EST     7.37 feet High Tide
Sat -- 05:46 PM EST     Sunset
Sat -- 10:01 PM EST     -0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.45.26.87.77.86.95.43.61.80.50.20.92.44.25.97.17.46.75.23.51.70.3-0.30.2

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (10,2,3,4)
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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 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.