Tuesday, September28, 2021
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Marine Weather and Tides
Marietta, GA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:29AMSunset 7:27PM Tuesday September 28, 2021 12:47 PM EDT (16:47 UTC) Moonrise 11:22PMMoonset 1:34PM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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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7 Day Forecast for Marine Location Near Marietta, GA
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location: 34, -84.47     debug


Area Discussion for - Peachtree City, GA
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FXUS62 KFFC 281534 AAB AFDFFC

Area Forecast Discussion . UPDATED National Weather Service Peachtree City GA 1134 AM EDT Tue Sep 28 2021

UPDATE.

Not planning on making any fundamental changes to the near-term forecast grids, but will be re-issuing the forecast products to remove any morning references.

20

PREV DISCUSSION. /Issued 737 AM EDT Tue Sep 28 2021/

UPDATE .

Updated for the 12Z Aviation Discussion.

PREV DISCUSSION . /Issued 358 AM EDT Tue Sep 28 2021/

Morning Area Forecast Discussion.

SHORT TERM /Today through Wednesday/ .

As the short term period begins, surface high pressure is positioned over north Georgia. Meanwhile, weak northwesterly upper level flow remains in place over much of the southeastern CONUS on the periphery of a broad ridge positioned over the Great Plains. Clear skies and nearly calm winds are in place across the forecast area due to the influence of the surface high. With clear skies and light winds, patchy fog will be possible during the early morning hours, particularly in portions of west-central Georgia and in valleys in the higher elevations of far north Georgia. The combination of northwesterly upper flow and the persistent surface high will lead to dry conditions and benign weather once again across north and central Georgia, with only a scattered cumulus field anticipated to develop during the afternoon today.

On Wednesday, the upper ridge will continue to amplify and push eastward, extending from the southeastern CONUS to the Great Lakes region. With the forecast area remaining on the eastern side of the ridge axis, dry conditions will continue across the area. A low pressure system over southeast Canada will drop towards northeast Atlantic coast on Wednesday. A weak cold front extending from the low will push southward into the Carolinas on Wednesday, but is not anticipated to reach north Georgia until just beyond the short term period.

The gradual warming will persist through the short term period. Afternoon high temperatures are expected to reach into the low 80s in north Georgia and mid 80s in central Georgia this afternoon, which will be 5-8 degrees above climatological normals, and a couple of degrees higher across the area on Wednesday afternoon. Precipitable water values will also increase slightly from today into Wednesday, but should remain less than 1 inch across the forecast area. In spite of several days of drying and subsidence underneath the high pressure, no fire danger concerns are expected today or Wednesday as soil moisture content remains high from a rainy start to the month.

King

LONG TERM /Wednesday Night through Monday/ .

The warm, dry, and relatively pleasant conditions will continue at the start of the long term period, with Thursday being the warmest day yet in this series. Mid-level ridging will be centered over the forecast area with the ridge axis extending through western Ontario, but its influence will be waning as a long wave trough continues to dig along the east coast and an advancing trough over the Southwest and Southern Plains erode the ridge from the west. Troughing to the west and a weak relative surface high pressure along the Carolina coast will both feed into strong southerly fetch of Gulf moisture that will push PWATS between 1.5 and 2 inches all the way to northern Minnesota by Thursday evening.

As the synoptic wave pattern breaks down, subsidence on the backside of the eastern coast trough will have a weak high pressure slide down the east coast from New England through the eastern Atlantic states. The main front will likely stall further north into the Carolinas, but some of the cooler, drier airmass may still bleed down into the forecast area with slightly cooler afternoon temperatures by the weekend. Following the wave break, a more disorganized and weak synoptic pattern will form with a more zonal component to the flow, which will push the plume of aforementioned moisture towards the east into the Ohio and Tennessee River Valleys and upper-level higher pressure is pushed into the Gulf region. As the flow of Gulf moisture moves eastward, PWATS will increase in the forecast area from comfortable values below an inch which will be in place through Thursday, to near 1.5 inches on Friday afternoon.

As moisture increases, especially for north Georgia chances for showers and isolated storms will reemerge for the forecast area as early as Friday afternoon for far northwest Georgia, but more likely by Sunday for north Georgia and Monday for the rest of the forecast area. Thankfully, despite the increase in rain chances, dewpoints are expected to remain in the low 60s, which is where our overnight lows will be capped and which will be far more comfortable than typical summertime conditions.

Thiem

AVIATION . 12Z Update . As the morning begins, some patchy fog has been observed in portions of far north Georgia, although impacts to TAF sites remain minimal. Otherwise, VFR conditions are expected through the day, with SCT upper cirrus moving in during the morning and FEW cu at 050-060 developing in the afternoon. Light and variable winds to start the period will become W to NW at 4-7 kts after 15Z. Calm and clear conditions are then expected tonight into Wednesday morning.

//ATL Confidence . 12Z Update . High confidence on all elements.

King

PRELIMINARY POINT TEMPS/POPS. Athens 86 61 87 63 / 0 0 0 0 Atlanta 85 63 86 64 / 0 0 0 0 Blairsville 80 55 81 56 / 0 0 0 0 Cartersville 84 60 85 61 / 0 0 0 0 Columbus 88 63 89 65 / 0 0 5 0 Gainesville 83 62 84 63 / 0 0 0 0 Macon 88 61 89 63 / 0 0 0 0 Rome 86 61 86 63 / 0 0 0 0 Peachtree City 86 60 86 62 / 0 0 0 0 Vidalia 88 65 89 65 / 0 0 0 0

FFC WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . 20 LONG TERM . Thiem AVIATION . 20


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marietta / Dobbins Air Force Base, GA6 mi52 minNW 1010.00 miPartly Cloudy78°F61°F55%1018 hPa
Cobb County International Airport - McCollum Field, GA7 mi58 minNW 710.00 miFair77°F63°F62%1018.4 hPa
Atlanta, De Kalb-Peachtree Airport, GA12 mi55 minNW 7 G 1710.00 miA Few Clouds79°F62°F56%1017.6 hPa
Fulton County Airport-Brown Field, GA15 mi55 minVar 610.00 miPartly Cloudy78°F62°F58%1017.8 hPa
Cartersville Airport, GA22 mi53 minVar 310.00 miFair77°F64°F65%1019 hPa
Atlanta, Hartsfield - Jackson Atlanta International Airport, GA24 mi56 minWNW 710.00 miPartly Cloudy80°F63°F56%1018 hPa

Link to 5 minute data for KMGE

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Last 24hrNW4S2W43SW4S3SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW2W4W8NW10
1 day agoW4NW5NW6W11NW5W9W6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS2W2NW4
2 days agoW9NW8N6NW8NW3W6W4CalmW3CalmCalmCalmCalmCalmCalmCalmW3CalmCalmW4W2W1NW4N5

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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