Tuesday, January21, 2020
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Marine Weather and Tides
Acworth, 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 7:40AMSunset 5:59PM Tuesday January 21, 2020 6:13 AM EST (11:13 UTC) Moonrise 4:55AMMoonset 3:10PM Illumination 15% Phase: Waning Crescent; Moon at 26 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 Acworth, GA
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location: 34.1, -84.62     debug


Area Discussion for - Peachtree City, GA
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FXUS62 KFFC 210802 AFDFFC

Area Forecast Discussion National Weather Service Peachtree City GA 302 AM EST Tue Jan 21 2020

SHORT TERM /Today through Wednesday/.

Mid level Clipper system is currently across southern portions of western TN. The low will continue to drop south across the area, bringing increased cloud cover to much of GA and potentially some scattered flurries to far NW GA. Flurries by definition do not accumulate.

Satellite imagery currently showing low-ish to mid level clouds spilling into north GA from the NE. Do expect the clouds to continue pushing southward through the day, but should be a bit more ragged on the southern edge. The strong energy aloft may be able to squeeze out the tiniest bit of moisture in this dry airmass, but model soundings remain very dry between 600mb and 800mb. Do think most of the moisture will evaporate before hitting the ground, but a few flakes (flurries) cannot be completely ruled out especially across the far north.

At the surface high pressure will build in from the west. Overnight and Wednesday will remain dry. Temperatures will remain well below normal today with values ranging from around 10 to 15 degrees below normal. A slight moderation in temperatures is expected tonight and Wednesday, with values ranging around 5 to 10 degrees below normal.

NListemaa

LONG TERM /Wednesday Night through Monday/.

High pressure will be snuggled up on the lee side of the Appalachians, centered over the mid-Atlantic, at the start of the extended period forcing CAD conditions on the eastern side of the Southern Blue Ridge Mnts. A weak wedge front will push into the forecast area, but with cool, dry conditions already in place it may not be very recognizable and will actually be warmer and more moist than the day before. However, by Thursday morning it will act as a mechanism for ascent for warm, moist flow out of the Gulf as isentropic lift increases low-level cloud coverage throughout the day. Eventually, with enough lifting moisture prefrontal showers will be possible late Thursday afternoon/evening into Friday morning.

On Friday, a cold front will sweep through connected to an occluded low pressure system moving through the Ohio River Valley. On average, current expectations are between a half inch to an inch of accumulating rainfall, which thankfully shouldn't cause additional flooding concerns across the forecast area. Instability will be extremely low to nonexistent and therefore no thunderstorms are expected as the frontal system moves through. Temperatures will be near freezing Friday and Saturday morning in the higher elevations above 2500 ft, and some models are showing a chance for some mixed precip in these areas with temperatures profiles riding the freezing line up to 800hPa, but at this time averaged model blends are showing surface temperatures narrowly above freezing during times of precipitation and thus these chances are not included in the official forecast.

Some residual, wrap-around showers may be possible through early Saturday morning, mainly shown in the Canadian model where the coverage is quite aggressive, but primarily expecting the forecast area to clear out by Saturday afternoon with strong high pressure moving into the Southeast afterwards and, subjectively, a beautiful weekend in store. Highs will be around the climatological norms through the long term, with lows slightly higher than normal except for Thursday morning, where near-normal lows around freezing will be present.

Thiem

AVIATION. 06Z Update . VFR conditions through the period. An upper level disturbance will bring some mid level clouds between 050-060 to the northern terminal sites overnight/early this morning. No major changes to the timing made for the TAFS. Winds will may bounce between 350-010 between 11z and 15z this morning with speeds of around 7kt. Winds may be more likely to go NNE at AHN. Skies should clear this afternoon with winds shifting back to the NW.

//ATL Confidence . 06Z Update . Med confidence winds. High confidence remaining elements.

NListemaa

PRELIMINARY POINT TEMPS/POPS. Athens 43 24 50 31 / 0 0 0 0 Atlanta 41 24 48 33 / 5 0 0 0 Blairsville 37 19 49 27 / 5 0 0 0 Cartersville 40 22 50 31 / 5 0 0 0 Columbus 46 26 53 34 / 0 0 0 0 Gainesville 41 24 48 31 / 5 0 0 0 Macon 45 26 52 32 / 0 0 0 0 Rome 40 22 49 31 / 5 0 0 0 Peachtree City 43 23 51 32 / 5 0 0 0 Vidalia 45 29 53 34 / 0 0 0 0

FFC WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . NListemaa LONG TERM . Thiem AVIATION . NListemaa


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cobb County International Airport - McCollum Field, GA6 mi83 minVar 410.00 miOvercast23°F16°F74%1000.6 hPa
Cartersville Airport, GA12 mi80 minVar 310.00 miOvercast25°F15°F66%1029.9 hPa
Marietta / Dobbins Air Force Base, GA13 mi77 minNW 310.00 miMostly Cloudy25°F15°F67%1028.7 hPa
Dallas Paulding County Regional Airport, GA22 mi78 minNNW 1010.00 miPartly Cloudy21°F14°F74%1027.4 hPa
Fulton County Airport-Brown Field, GA23 mi80 minN 010.00 miOvercast24°F16°F71%1028.8 hPa
Atlanta, De Kalb-Peachtree Airport, GA23 mi80 minN 310.00 miOvercast24°F16°F71%1029.8 hPa

Link to 5 minute data for KRYY

Wind History from RYY (wind in knots)
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Last 24hrNW56NW6NW9NW9NW9
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N8N8N8NW55NW6NW5NW3Calm4NW4
1 day agoNW9
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2 days agoE8
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E11E6SE8SE8E5E43E53NE3NE4E3CalmCalmCalmW8W11
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Tide / Current Tables for
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Tide / Current Tables for
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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 Peachtree City, GA (6,6,7,8)
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Ground Weather Radar Station Atlanta, GA
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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.