Tuesday, January28, 2020
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Marine Weather and Tides
Woodstock, 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 7:36AMSunset 6:05PM Tuesday January 28, 2020 10:21 PM EST (03:21 UTC) Moonrise 10:03AMMoonset 9:40PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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 Woodstock, GA
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location: 34.03, -84.51     debug


Area Discussion for - Peachtree City, GA
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FXUS62 KFFC 290154 AFDFFC

Area Forecast Discussion National Weather Service Peachtree City GA 854 PM EST Tue Jan 28 2020

UPDATE. High pressure will continue across the area tonight. Mid and high level cloudiness will continue from west to east overnight as the next system begins to approach from the west. Grids/forecast are in pretty good shape and will only make some minor changes to the hourly/temp and sky grids.


PREV DISCUSSION. /Issued 630 PM EST Tue Jan 28 2020/

PREV DISCUSSION . /Issued 257 PM EST Tue Jan 28 2020/

SHORT TERM /Tonight through Wednesday Night/ .

Not a bad day at all by late January standards as a large ridge of high pressure extends from the northern plains through the Tennessee Valley and into the local area. Full sun today has allowed temps to reach the mid to upper 50s for most locations with even some lower 60s noted across Central GA. A look to the west however on the regional satellite view indicates the next storm system of consequence to begin initial impacts tomorrow.

First, for tonight, approaching trough will provide for some increasing upper diffluence through the morning hours. Meanwhile, cool dome of high pressure at the surface tries its best to hang on, especially across the NE portions. Question continues to be whether there will be a juxtaposition of these 2 features to create a brief period of freezing rain Wed morning. At this time, I have it as no in the grids with temps remaining just above freezing and precip arriving just after daybreak for NE portions. This will need to be monitored closely though by evening and overnight shift.

Much more confident on rain developing for most of the area late Wed afternoon. In fact, feel most of the models and especially the ensemble means are underplaying pop potential for Central GA zones. Sure, its not likely to be heavy QPF by any stretch but combination of DPVA and isentropic upglide should be more than enough to warrant categorical pops for a good portion of the area south of I20.

Deese

LONG TERM /Thursday through Tuesday/ .

The progressive pattern at the upper level continues as the extended period begins. By Thursday morning, the upper-level trough and associated surface low over the northern Gulf of Mexico will be moving quickly eastward away from the forecast area and into the Atlantic Ocean. Precipitation associated with this system is expected to come to an end during the morning hours on Thursday. Meanwhile, upper-level ridging will build in over the southeastern CONUS and persist through the remainder of the day Thursday. As a result, a brief period of clearing conditions will occur until the next system brings the next round of precipitation to north and central Georgia.

On Friday, the upper level ridge pushes eastward towards the Atlantic coast and another trough approaches the forecast area from the west. Southwesterly upper level flow on the backside of the ridge will contribute to moisture overspreading the forecast area, leading to increasing cloud cover by early Friday morning followed by showers arriving by Friday afternoon. High pressure is furthermore expected to build down the Appalachians during the day. Latest guidance is in good agreement on heaviest precipitation spreading into the area Friday afternoon and exiting Saturday morning, although some uncertainty still exists on the northward extent of the precipitation. Have trended PoPs up on Friday and early Saturday, with highest chances anticipated across central Georgia. It is possible to see some lingering moisture and light precipitation on the backside of the system early Sunday morning after the system exits the area. There is a chance for wintry precipitation over the higher elevations of northeast Georgia on Friday, Saturday, and Sunday mornings, although no more than a trace of snow and no impacts anticipated at this time.

Strong upper level ridge and surface high will build in across the southeastern CONUS during the early parts of next week. High temperatures through the end of the week are expected to run near to slightly below climatological normals, with highs primarily ranging from the upper 40s in far north Georgia to the upper 50s in central Georgia. Low temperatures, on the other hand, are expected to be about 4-8 degrees above normal each morning. Low temperatures will be in the upper 30s to low 40s across much of the area, with the exception of the higher elevations of the far northeast, where lows will drop to near freezing each morning. Upper level ridge will lead to increasing temperatures at the end of the period.

King

AVIATION . 00Z Update . Mid and upper level cloudiness will be on the increase overnight. Cigs will remain well above 10kft through mid morning tomorrow. Cigs will begin to lower during the early afternoon hours, but should still remain above 3.5kft. Winds will be the main forecast issue. Speeds will go light overnight (less than 5kt) and try to shift to the NE. With speeds so light, the direction could flip flop around due north until mid morning on Wednesday.

//ATL Confidence . 00Z Update . Med confidence on winds. High confidence remaining elements. NListemaa

PRELIMINARY POINT TEMPS/POPS. Athens 38 54 38 54 / 5 40 40 10 Atlanta 40 53 38 55 / 20 50 40 5 Blairsville 35 50 34 50 / 5 40 50 10 Cartersville 38 54 36 55 / 20 40 40 5 Columbus 42 57 40 61 / 5 80 50 5 Gainesville 39 51 38 52 / 5 40 40 10 Macon 38 59 40 60 / 0 80 70 5 Rome 39 53 36 55 / 20 40 30 5 Peachtree City 39 55 37 57 / 10 50 50 5 Vidalia 40 62 44 62 / 0 70 80 10

FFC WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . NListemaa LONG TERM . King AVIATION . NListemaa


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cobb County International Airport - McCollum Field, GA5 mi32 minN 010.00 miFair39°F34°F82%989.1 hPa
Marietta / Dobbins Air Force Base, GA7 mi86 minW 110.00 miPartly Cloudy42°F33°F73%1016.9 hPa
Atlanta, De Kalb-Peachtree Airport, GA15 mi29 minN 010.00 miFair41°F32°F70%1017.3 hPa
Fulton County Airport-Brown Field, GA17 mi29 minN 010.00 miFair39°F34°F82%1016.9 hPa
Cartersville Airport, GA19 mi29 minN 010.00 miFair36°F33°F89%1016.8 hPa

Link to 5 minute data for KRYY

Wind History from RYY (wind in knots)
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Last 24hrW5W3CalmCalmCalmW3NW3CalmW4CalmW53W8NW76NW8NW8
G14
N93N7CalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmNW4CalmCalmCalmCalmSW3W6W5W10W6W8
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2 days agoW6W3W4W64CalmW3W6CalmW4NW4W4W5NW5W8W6NW7NW5CalmW4CalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
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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 (22,6,7,8)
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Ground Weather Radar Station Atlanta, GA
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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 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.