Sunday, January17, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Dawsonville, GA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:39AMSunset 5:52PM Sunday January 17, 2021 11:18 PM EST (04:18 UTC) Moonrise 10:49AMMoonset 10:31PM Illumination 23% Phase: Waxing Crescent; Moon at 5 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Dawsonville, GA
   Hourly   EDIT   Help
location: 34.43, -84.12     debug


Area Discussion for - Peachtree City, GA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS62 KFFC 180328 AFDFFC

Area Forecast Discussion National Weather Service Peachtree City GA 1028 PM EST Sun Jan 17 2021

UPDATE.

Shortwave coming across has produced mainly mid level based clouds and little precip emanating from them according to obs and mPing reports. Should see some further saturation though and have increased pops and expanded southward. Accumulation totals remain unchanged and SPS should suffice in coverage half inch or less totals.

Deese

PREV DISCUSSION. /issued 659 PM EST Sun Jan 17 2021/

PREV DISCUSSION . /issued 301 PM EST Sun Jan 17 2021/

SHORT TERM /Tonight through Monday Night/ .

Strung out piece of vorticity brought some morning and afternoon cloudiness across the area but is quickly moving east ahead of the next system that will affect us tonight. Winds have picked up a little bit this afternoon with some gusts getting up into the lower 20's (mph) at a few locations that are a bit more open, and that will continue until sunset. Tonight, yet another upper level wave will move across the area moving in from the NW before heading to the east, providing yet another shot at some high elevation snow showers in the Appalachians. Hi-res model runs, including the past several hours worth of HRRR runs, show a 4 to 5 hour window tonight in which broad synoptic ascent will coincide with favorable orographic lift and low level moisture to squeeze out a little bit of snow in the NE mountains. As of now, expect that these accumulations will remain below half an inch and occur mostly at elevations above 2000 ft. Minor travel impacts could occur at elevation, though these should be very isolated. Outside of the mountains, some very light snow showers or rain showers mixed with snow showers are possible across north GA, but no accumulations are expected as temperatures should remain too warm and precipitation too light.

Tomorrow, expect temperatures to be similar to today. Shortwave trough moves by and NW flow replaces it. Pocket of mid level dry air will provide the opportunity for some additional mixing of dry air downwards into afternoon, so RHs will need to be monitored as these days are typically where models struggle, keeping them too high. Given fuel moistures, potential windiness, and possibility of RHs tanking a bit lower, will need to monitor fire weather conditions.

Lusk

LONG TERM /Tuesday through Sunday/ .

Weak upper wave/sfc boundary could bring a low end chance for some showers to portions of north GA Tuesday night . have kept mainly a persistence fcst of staying under 15 percent pops with it being quite a weak feature but cannot rule out trends to raise chance a bit. Otherwise main focus remains on the more persistent moisture advection in largely zonal upper stream and resultant more widespread rainfall Thursday/Friday. Some storm total QPF has come in decently lower than previous run, but expecting more back and forth given model discrepancies on moisture axis extent or how progressive the sfc boundary is across the CWA along with a higher PWAT airmass. Latest amounts mainly in 1-2 inch range but could be higher in future updates and will need to watch isolated flood threat. Little change to rest of fcst and previous discussion follows .

Baker

PREV DISCUSSION . /Issued 630 AM EST Sun Jan 17 2021/

LONG TERM /Monday Night through Saturday/ .

Dry start to the long term forecast as a surface high sinks down and across the southeast US with slight NW upper lvl flow through Tuesday evening.

As the high makes its trek southward towards FL, moisture returns to the CWA on Wednesday as it moves around the edge of said high, aided by a low pressure system near the California Baja. This low pressure system will be the next rainmaker across the area through Friday, although there are still slight model discrepancies between the Euro and GFS on timing and overall precipitation coverage as the low is absorbed into the flow and ejects eastward. The GFS remains the more progressive and wetter of the two models, with PWATS approaching 1 to 1.5" across the CWA, while the Euro is still showing a slower and slightly drier solution. Even with slight coverage discrepancies, kept Chance PoPs with Storm Total QPF for Thursday morning through Friday night sitting around 0.5-1" for central Georgia and 1.5-2.5" across north Georgia.

Model differences continue to round out the extended through Sunday with the Euro switching sides and becoming the wetter model run. This is mainly in part to progging slower movement of the outgoing system and keeping sharper SW flow with the surface high further north over the Great Lakes Region. This is in comparison to the GFS which sets the high up over New England and puts the CWA in a wedging pattern. Still a ways out so went with mid-range slight chance PoPs for Saturday morning to try and capture the model differences.

Morgan

AVIATION . 00Z UPDATE .

After a brief respite, BKN conditions will return later this evening but perhaps not as low as previously thought. Some guidance indicating higher at 8K ft but will compromise for now with that and the previous forecast and go around 6k. Straightforward after that with clearing conditions for Monday and just some limited gust potential at ATL.

//ATL CONFIDENCE . 00Z UPDATE .

High on all elements.

Deese

PRELIMINARY POINT TEMPS/POPS. Athens 32 51 30 57 / 5 0 0 0 Atlanta 33 50 30 56 / 5 0 0 0 Blairsville 29 43 27 50 / 20 5 0 5 Cartersville 30 50 28 56 / 10 0 0 5 Columbus 33 56 31 61 / 0 0 0 0 Gainesville 33 49 31 54 / 10 0 0 0 Macon 33 57 29 62 / 5 0 0 0 Rome 31 52 29 56 / 10 0 0 5 Peachtree City 31 53 29 58 / 5 0 0 0 Vidalia 36 57 33 61 / 0 0 0 0

FFC WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . Deese LONG TERM . Morgan AVIATION . Deese


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gilmer Memorial Airport, GA19 mi26 minSW 410.00 miPartly Cloudy40°F27°F60%1013 hPa

Link to 5 minute data for KGVL

Wind History from GVL (wind in knots)
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
Last 24hrW6W7W5W7W5W6W7W7W6W8W9W13W9SW12
G19
SW12
G20
W11SW10SW7SW5SW3SW6SW3SW5SW4
1 day agoW9W10W11W11W12W8W8W10W9W12W17
G24
W11
G22
W18
G26
W13
G26
W19
G27
W14
G20
W12
G22
W13
G20
W13
G19
W9W7W6W6W6
2 days agoCalmS3SW3S3CalmSW3CalmCalmSE4W13
G17
W11
G16
W10W12W8SW11
G17
SW14
G19
W13W7SW6W6W3W9
G18
W7W7

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
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.