Saturday, December7, 2019
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Marine Weather and Tides
Midway, 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 3:33 AM EST (08:33 UTC) Moonrise 2:45PMMoonset 2:40AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 302 Am Est Sat Dec 7 2019
.small craft advisory in effect from 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 302 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 Midway, GA
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location: 31.73, -81.21     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 070600 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 100 AM EST Sat Dec 7 2019

SYNOPSIS. A weak disturbance will move through today. High pressure will build from the northwest tonight through Sunday. A warm front will lift north of the region Monday, before a cold front sweeps through the area late Tuesday. Strong high pressure will then return Wednesday through Friday.

NEAR TERM /UNTIL 6 AM THIS MORNING/. Widespread mid level clouds across the region at midnight will persist for much of the area overnight, although some clearing north of I-16 may occur later on. The only areas that may be a concern for some fog if clearing does occur looks to be in the Charleston Quad-County region. We do not have any fog in the forecast due to the uncertainty of the cloud cover. Otherwise, a few light sprinkles may occur with passing of vorticity aloft but little in the way of measurable pcpn is expected. Temps on track with little change on the midnight update.

SHORT TERM /6 AM THIS MORNING THROUGH MONDAY/. Dry high pressure will expand across the area from the northwest on Saturday. The upper shortwave will be far enough east initially to keep any inverted trough development well off the coast. Therefore we do not anticipate any precipitation Saturday.

A secondary shortwave will move into the Southeast Saturday night and Sunday. The surface ridge will shift farther to the east, pushing an inverted trough closer to the coast before it lifts north Sunday night and Monday. A few rain showers could skirt through northern areas Sunday night and Monday though most areas will remain dry. A warm front will lift north on Monday.

Temps in the 60s Saturday and Sunday will warm well into the 70s on Monday as a southerly flow develops.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/. The mid and upper trough will amplify to our west early next week, allowing for a cold front to approach from the west late Tuesday, which will likely pass through Tuesday night. There remain enough timing differences between the global models to not show anything higher than chance PoP ahead of the front, but higher chances will be required at we draw closer to the event. Any t-storm risk is too low to include this far in advance. Confidence is excellent that it'll be unseasonably warm, with H85 temps as great as 12-13C Tuesday.

Behind the cold front a large and robust high pressure system with dry and colder weather will dominate the local vicinity Wednesday and Thursday, before it gives way to another upstream cold front late in the week. An extended period of breezy to windy conditions will prevail through the period with large pressure rises and a tight gradient around the high.

AVIATION /06Z SATURDAY THROUGH WEDNESDAY/. VFR at both KSAV/KCHS through 06Z Sunday. Small chances for some light fog restrictions and/or scattered clouds below 1 kft a few hours around dawn at the Charleston terminal.

Extended Aviation Outlook: Overnight stratus will be possible Sunday night through Wednesday night, possibly resulting in flight restrictions.

MARINE. Overnight: High pressure building in from the north should increase the pressure gradient, causing winds to turn to the north and increase to around 10 kt. Seas initially 1-2 ft could build a foot by daybreak.

A pinched northeast gradient on Saturday will result in the onset of Small Craft Advisory conditions for all Atlantic waters outside Charleston Harbor. We have SCA headlines beginning at varying times Saturday or Saturday night. Conditions will improve late Sunday across the nearshore waters due to a warm front lifting through and southerly flow returning. SCA conditions will persist over the offshore GA waters through much of next week due to a combination of winds/seas.

Sea Fog: Conditions still point to at least a chance of sea fog on Monday as temps and dew points climb greater than the underlying waters. Should this occur the most likely time frame would be Monday within a favorable S-SW fetch and before winds increase too much. Confidence is not yet supportive of adding mention to the forecast, nor to the Hazardous Weather Outlook.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory from 6 PM this evening to 5 PM EST Sunday for AMZ352-354. Small Craft Advisory from 8 AM this morning to 6 AM EST Thursday for AMZ374. Small Craft Advisory from 8 AM this morning to 5 PM EST Sunday for AMZ350.

NEAR TERM . SHORT TERM . LONG TERM . AVIATION . MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 27 mi52 min NW 4.1 G 5.1 53°F 58°F1022 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 29 mi44 min NNE 5.8 G 7.8 60°F 62°F2 ft1021 hPa (-0.6)58°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, GA21 mi38 minN 010.00 miOvercast52°F47°F83%1020.7 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA22 mi38 minN 010.00 miOvercast51°F47°F89%1021 hPa

Link to 5 minute data for KSVN

Wind History from SVN (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmE4CalmCalmSW4NW7CalmCalmW6N7NW5NE5NW4CalmCalmW4NW4Calm
1 day agoW9W9NW12NW9NW8NW7NW6N5N8NE5CalmCalmS6SE6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW7W8W8W8W8W11W10W8NW13
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Tide / Current Tables for North Newport River (Daymark 119), Georgia
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Florida Passage, Bear River, Georgia
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Florida Passage
Click for Map
Sat -- 02:40 AM EST     Moonset
Sat -- 04:47 AM EST     7.15 feet High Tide
Sat -- 07:11 AM EST     Sunrise
Sat -- 11:15 AM EST     1.20 feet Low Tide
Sat -- 02:44 PM EST     Moonrise
Sat -- 05:13 PM EST     6.89 feet High Tide
Sat -- 05:20 PM EST     Sunset
Sat -- 11:33 PM EST     0.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.52.84.45.96.97.16.65.54.22.91.81.21.42.43.75.16.36.96.75.84.531.60.7

Weather Map
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wmap_A
GEOS Local Image of Southeast    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
Wind Forecast for Charleston, SC (3,6,7,8)
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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 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.