Marine Weather and Tides
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 7:28AM||Sunset 7:29PM||Monday September 27, 2021 4:14 AM EDT (08:14 UTC)||Moonrise 10:34PM||Moonset 12:39PM||Illumination 66%|
7 Day Forecast for Marine Location Near Woodstock, GAHourly EDIT Help
Area Discussion for - Peachtree City, GA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS62 KFFC 270800 AFDFFC
Area Forecast Discussion National Weather Service Peachtree City GA 400 AM EDT Mon Sep 27 2021
. Morning Area Forecast Discussion .
SHORT TERM /Today through Tuesday/.
As the short term period begins, northwesterly upper level flow is in place across much of the southeastern CONUS on the periphery of an approaching ridge currently centered over the Great Plains. This ridge will amplify and continue to move eastward towards the region today and Tuesday. Meanwhile, surface high pressure will remain in place over north and central Georgia, which will maintain dry conditions across the forecast area, with no rain chances expected today or Tuesday. With clear skies and light and variable winds under the influence of the high pressure system, some patchy fog is possible this morning, particularly in fog-prone areas such as rivers and lakes and in the higher elevations of far north Georgia. Low level winds are expected to shift to west to southwest today, which will allow for a gradual warming trend through the period, with afternoon high temperatures forecast to reach into the mid to upper 80s across the majority of the area on Tuesday. The southerly component of the low level flow will also bring more Gulf Moisture into the area, with dewpoints increasing into the upper 50s by this afternoon and into the low 60s as we transition to the long term period.
LONG TERM /Tuesday Night through Sunday/.
The start of the long term period begins with a weakening mid- and upper-level ridge axis positioned from Alabama through the western Hudson Bay shoreline in the southeastern Nunavut province. This wave pattern does look to break down leading into the long term leading to a more chaotic and disorganized the upper-level flow pattern and more uncertainty at the end of and beyond next weekend. Thankfully, the lack of any strong synoptic influences to the region will allow pleasant and comfortable antecedent conditions to persist through the rest of the forecast period, but and end is in sight with more moist, summertime conditions potentially making a return by next week.
A surface high pressure, remnant from a cold front that moved through the forecast area late last week, looks to be positioned to the east of the forecast area by Wednesday. With the lack of any synoptic scale support this high pressure will be pretty diminished, but due to the lack of any other weather system in the region will still dominate the local weather pattern. Further east in the Four Corners region, a cutoff upper-level low pressure system will be merging into a broader upper-level trough over the western CONUS, but not before the southerly flow across the Southern Plains and Lower Mississippi River Valley pulls in ample Gulf moisture with PWATs in excess of 1.5 inches floods into the Dakotas and western Minnesota. Locally, PWATs look to stay near or below an inch into the start of the weekend, but as the aforementioned upper-level ridge is choked off due to break in the wave pattern, and the troughing to the west advances eastward placing the region in a more southeasterly flow and advecting the plume of moisture into the Ohio and Tennessee River Valleys.
As the wave pattern breaks down, discrepancies between different models solutions emerge, but luckily most deterministic models keep a dome of upper-level high pressure, a remnant of the broader upper- level ridge pattern across the central CONUS at the start of the long term period, will be positioned near the northeastern Gulf and FL/GA state line around the weekend, and linger long enough the shield the region from any precipitation through most of the weekend. The only exception will be some low end precip chances, below 20 percent, for North Georgia on Sunday.
With the lack of any synoptic airmass changes to the forecast region dewpoints and temperatures will mostly remain steady from day to day. Dewpoints will remain in the upper 50s to mid 60s, which will still seem pretty pleasant compared to the low 70s we've had all summer. These dewpoints will also keep our morning low temperatures capped in the same range. With daylight hours getting shorter with each passing day diurnal heating will only be able to push afternoon high temperatures into the 80s, with a couple days of temps in the low 90s possible for central Georgia mid-week.
AVIATION. 06Z Update . Mainly VFR conditions are expected through the period, with the exception of some patchy visibility restrictions in the early morning hours. A cu field between 050-060 is expected to develop in the afternoon hours. Winds will be light and variable to start the period, and will become W to SW at 4-7 kts by 15Z, becoming light and variable once again after sunset.
//ATL Confidence . 06Z Update . High confidence on all elements.
PRELIMINARY POINT TEMPS/POPS. Athens 83 58 85 61 / 0 0 0 0 Atlanta 83 60 84 62 / 0 0 0 0 Blairsville 78 53 80 54 / 0 0 0 0 Cartersville 82 58 84 59 / 0 0 0 0 Columbus 86 62 87 64 / 0 0 0 0 Gainesville 81 59 83 61 / 0 0 0 0 Macon 85 59 87 62 / 0 0 0 0 Rome 83 57 85 61 / 0 0 0 0 Peachtree City 84 57 85 60 / 0 0 0 0 Vidalia 84 62 86 65 / 0 0 0 0
FFC WATCHES/WARNINGS/ADVISORIES. NONE.
SHORT TERM . King LONG TERM . Thiem AVIATION . King
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Cobb County International Airport - McCollum Field, GA||5 mi||24 min||N 0||10.00 mi||Fair||57°F||56°F||96%||1020 hPa|
|Marietta / Dobbins Air Force Base, GA||7 mi||18 min||N 0||10.00 mi||Fair||58°F||56°F||94%||1019.8 hPa|
|Atlanta, De Kalb-Peachtree Airport, GA||15 mi||21 min||N 0||5.00 mi||Fog/Mist||57°F||56°F||96%||1019.3 hPa|
|Fulton County Airport-Brown Field, GA||17 mi||21 min||N 0||9.00 mi||Fair||56°F||55°F||97%||1019.7 hPa|
|Cartersville Airport, GA||19 mi||19 min||N 0||7.00 mi||Overcast||57°F||57°F||100%||1020.7 hPa|
Link to 5 minute data for KRYY
Wind History from RYY (wind in knots)
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|2 days ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||NW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
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