Sunday, January16, 2022
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Marine Weather and Tides
Acworth, GA

Version 3.4
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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 7:42AMSunset 5:54PM Sunday January 16, 2022 8:27 PM EST (01:27 UTC) Moonrise 4:41PMMoonset 6:56AM Illumination 100% Phase: Full Moon; Moon at 14 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 170008 AFDFFC

Area Forecast Discussion National Weather Service Peachtree City GA 708 PM EST Sun Jan 16 2022

PREV DISCUSSION. /Issued 308 PM EST Sun Jan 16 2022/

SHORT TERM /Tonight through Monday Night/ .

The wedge is holding strong over north Georgia as overrunning precipitation has constantly reinforced through the morning and early afternoon, allowing temperatures to stay in the low to mid 30s within. The center of the occluded low pressure system has entered west Georgia, and is expected to move northeastward roughly along the I-85 corridor through this afternoon and evening. The low is occluded to the point that cold air advection is wrapping around the low and being pulled into the forecast area from the southwest side, which will serve to further lower temperatures and dewpoints. With this, along with northwesterly flow building in on the back side of the low, below freezing 925 mb and 850 mb temperatures are being observed across north and central Georgia, indicating an erosion of the warm nose and signaling a transition of the frozen precipitation type to snow.

At this time, snowfall accumulations are expected roughly along and north of the I-85 corridor in west Georgia and roughly along and north of the I-20 corridor in east Georgia. Additional accumulations of generally 0.5-1 inch is forecast in this area, with the exception of the far northern tier, which is forecast to receive between 1-2 inches. As the upper low moves northeastward exits the area to the northeast tonight and pushes towards the Mid-Atlantic coast, PoPs will diminish from southwest to northeast, finally coming to an end across far northeast Georgia just after midnight. No changes are planned for the existing Winter Storm Warnings/Winter Weather Advisories for this forecast update.

The forecast area is currently experiencing a lull between high winds, as the tighter surface pressure gradient from this morning moves away to the east. Winds will shift to the northwest and pick up this evening, reaching 15-25 kts with gusts of 25-35 kts during the overnight hours. This is on the low-end of Wind Advisory criteria, but one has been issued for the overnight hours and much of the day on Monday. With lingering ice and snow accumulations in trees, these winds will lead to additional trees and powerlines down, and possibly some scattered power outages as a result.

Low temperatures on Monday morning are expected to be in the 20s across the majority of the area and low 30s in south-central Georgia. With the aforementioned gusty winds, wind chills will drop to between 15-20 degrees, with some single digits in the mountains of far northeast Georgia. Considering frozen precipitation lingering on roadways, along with additional liquid precipitation from this event, and temperatures already dropping below freezing across the majority of the area, black ice, is expected to be an issue overnight and during the morning on Monday. An SPS for black ice has been issued across north Georgia, accordingly.

Cool northwesterly upper level flow sets up on the back side of the retreating upper low on Monday, and surface high pressure will begin to build into the area. A reinforcing shortwave traversing the upper flow is is expected to skirt far north Georgia during the daytime. While low-level moisture will be fairly limited, this disturbance nonetheless lead to increased cloud cover across much of the forecast area. Perhaps some flurries could get squeezed out in far northeast Georgia in the closest proximity to the disturbance, but no additional snow accumulation is currently expected on Monday. The cloud deck will serve to inhibit warming on Monday, especially in north Georgia, where highs will only reach into the upper 30s and low 40s. Furthermore, temperatures may not get above freezing at all in the higher elevations of far north Georgia, so patches of lingering ice could still a concern heading into Monday night.

King

LONG TERM /Tuesday through Sunday/ .

We're in the midst of a very progressive wave train, and that will remain true in the extended. The influence of a briefly presiding surface high (the one that nudged the surface low that brought wintry conditions to our area on Monday off the Atlantic coast) will keep things cool and dry on Tuesday, but the buck doesn't stop there. Late Wednesday, global models are in good agreement that a broad cold frontal boundary begins to sweep across the eastern CONUS, bringing the next round of PoPs. As the front pushes to the southeast early Thursday morning through Friday night, isolated chances for flurries and a rain/snow mix trickle in.

Consensus is out on how the forecast evolves beyond day four, even between successive runs. 06Z GFS featured predominantly snow event for north Georgia on Friday, aided by disturbance traversing the upper trough; 12 GFS hints at a struggle between warm, moist advection from a low riding along the Gulf Coast and the wedge -- with a band of FZRA/mixed precip across central Georgia late Saturday into Sunday. 12Z Euro as a nonevent this weekend, which is significant disagreement from even the 0Z run, which developed a deepening coastal low along the eastern Carolinas as it latched onto lingering baroclinicity from the stalled front. All this to say: didn't try to get cute with the forecast beyond D6 in hopes of models converging to one solution or another.

96

AVIATION. 00Z Update . IFR/MVFR Cigs will persist through 20Z when VFR will be possible at CSG/MCN. West winds will continue with 10-15G20kts increasing to 20g25kts 05-10Z. West winds will continue through the forecast period with 10g20kts prevailing for the most part. ATL area and AHN will continue to see a wintry mix of precip with it tapering off by 04-06Z.

//ATL Confidence . 00Z Update . Low to medium confidence in precip type, medium to high confidence in all other elements.

Atwell

PRELIMINARY POINT TEMPS/POPS. Athens 27 41 24 49 / 40 0 0 0 Atlanta 28 40 25 50 / 40 0 0 0 Blairsville 21 34 18 46 / 70 10 0 0 Cartersville 26 40 23 50 / 50 0 0 0 Columbus 32 48 27 55 / 20 0 0 0 Gainesville 27 39 23 47 / 40 0 0 0 Macon 32 49 26 56 / 10 0 0 0 Rome 28 42 24 52 / 50 0 0 0 Peachtree City 28 42 24 53 / 30 0 0 0 Vidalia 35 51 29 54 / 5 0 0 0

FFC WATCHES/WARNINGS/ADVISORIES. Wind Advisory until 7 PM EST Monday for the following zones: Baldwin . Banks . Barrow . Bartow . Bibb . Bleckley . Butts . Carroll . Catoosa . Chattahoochee . Chattooga . Cherokee . Clarke . Clayton . Cobb . Coweta . Crawford . Crisp . Dade . Dawson . DeKalb . Dodge . Dooly . Douglas . Emanuel . Fannin . Fayette . Floyd . Forsyth . Gilmer . Glascock . Gordon . Greene . Gwinnett . Hall . Hancock . Haralson . Harris . Heard . Henry . Houston . Jackson . Jasper . Jefferson . Johnson . Jones . Lamar . Laurens . Lumpkin . Macon . Madison . Marion . Meriwether . Monroe . Montgomery . Morgan . Murray . Muscogee . Newton . North Fulton . Oconee . Oglethorpe . Paulding . Peach . Pickens . Pike . Polk . Pulaski . Putnam . Rockdale . Schley . South Fulton . Spalding . Stewart . Sumter . Talbot . Taliaferro . Taylor . Telfair . Toombs . Towns . Treutlen . Troup . Twiggs . Union . Upson . Walker . Walton . Warren . Washington . Webster . Wheeler . White . Whitfield . Wilcox . Wilkes . Wilkinson.

Winter Storm Warning until midnight EST tonight for the following zones: Banks . Barrow . Chattooga . Dade . Dawson . Fannin . Forsyth . Gilmer . Gwinnett . Hall . Jackson . Lumpkin . Madison . Pickens . Towns . Union . Walker . White.

Winter Weather Advisory until midnight EST tonight for the following zones: Bartow . Carroll . Catoosa . Cherokee . Clarke . Clayton . Cobb . Coweta . DeKalb . Douglas . Fayette . Floyd . Gordon . Greene . Haralson . Heard . Henry . Meriwether . Morgan . Murray . Newton . North Fulton . Oconee . Oglethorpe . Paulding . Pike . Polk . Rockdale . South Fulton . Spalding . Taliaferro . Troup . Walton . Whitfield . Wilkes.



SHORT TERM . Atwell LONG TERM . 96 AVIATION . Atwell


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cobb County International Airport - McCollum Field, GA6 mi37 minW 87.00 miOvercast33°F32°F96%1003.4 hPa
Cartersville Airport, GA12 mi92 minWSW 37.00 miOvercast34°F34°F100%1003.4 hPa
Marietta / Dobbins Air Force Base, GA13 mi31 minW 610.00 miOvercast34°F32°F95%1003.3 hPa
Dallas Paulding County Regional Airport, GA22 mi52 minW 67.00 miLight Snow32°F32°F100%1002.4 hPa
Fulton County Airport-Brown Field, GA23 mi34 minWSW 510.00 miOvercast35°F33°F93%1003.3 hPa
Atlanta, De Kalb-Peachtree Airport, GA23 mi34 minW 76.00 miLight Snow Fog/Mist34°F32°F92%1003.9 hPa

Link to 5 minute data for KRYY

Wind History from RYY (wind in knots)
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