Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 7:14AM||Sunset 6:25PM||Wednesday February 20, 2019 4:10 PM EST (21:10 UTC)||Moonrise 7:50PM||Moonset 8:09AM||Illumination 98%|
7 Day Forecast for Marine Location Near Flowery Branch, GAHourly EDIT Help
Area Discussion for - Peachtree City, GA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kffc 202004|
area forecast discussion
national weather service peachtree city ga
304 pm est Wed feb 20 2019
Afternoon forecast update...
Short term tonight through Thursday night
A line of thunderstorms is entering the northwest corner of the cwa
and is expected to slowly push southeastward into the area during
the late afternoon and into the overnight hours. This axis of
showers and thunderstorms is once again expected to stall during the
overnight hours along and north of the i-85 corridor, including the
As a warm front pushes through the area this afternoon and evening,
the atmosphere will destabilize enough to allow for MUCAPE values in
the 500-1000 j kg range to spread across our forecast area.
Maintained a chance of thunder this afternoon through late Thursday
as a result. Moisture is continuing to increase as well due to the
continued southwest flow aloft combined with warm, southeasterly
gulf air behind the warm front. Pwat values will approach the 1.6 to
1.8 inch range by late afternoon which is abnormally high for the
month of february for our area, necessitating an upward trend in
pops and rainfall rates across northern georgia.
A cold front will then move into north georgia Thursday. Model
guidance is coming into better agreement that the front may not be
able to make it through the forecast area due to the parallel
southwesterly flow aloft. Hi-res models similarly keep the front
oriented SW to NW across the northern portion of georgia, then lift
the heaviest precipitation into tn ky on early Friday morning.
Gfs ECMWF are coming into agreement with this thinking as well.
Total QPF amounts have been trended up to around 1 to 3 inches
across the axis of precipitation over north and west georgia from
this afternoon through tomorrow afternoon. Locally higher amounts
will also be possible due to the convective nature of the
precipitation, along with the possibility of some training.
Moreover, soils are saturated due to previous rainfall
accumulations, so this amount of rainfall will produce significant
runoff and lead to some additional creek and river flooding. A flash
flood watch is in effect for most of north georgia, as a result.
This flash flood watch replaces the previously issued areal flood
Long term Friday through Wednesday
The long term begins with a stalled front draped across the
northern portions of our CWA with the southwesterly firehose of
enhanced moisture still firmly in place. Luckily the axis of
heaviest rainfall looks to be located further to the north and
west, but continued accumulations are expected through Sunday.
A planetary rossby wave train will begin to move through the area
on Friday which will act to amplify the troughs and ridges in
place over the CONUS and break us out of the pattern we've been
stuck in for the last week. This amplification of the ridge over
the eastern u.S. Will strengthen a surface high and kick it out
of the great lakes region into new england. This high pressure,
once it starts to transition to the east side of the appalachians
on Friday, will enhance cold air damming along the southeastern
blue ridge mtns and drive a wedge front into north georgia. This
extra lift will act to enhance precip in the region on Friday and
Saturday as the warm, moist flow overrides the cool air.|
An upper level trough, also enhanced by the rossby wave train,
will begin to lift across the eastern CONUS on Sunday, occluding
a surface low-pressure system on its journey from the southern
plains to the great lakes. A cold front extending from the system
then pushes through the area Sunday morning afternoon. Then for
the first time, in what seems like a very long time, we'll expect
mostly sunny skies and drier conditions for several days. Hooray!
a surface high pressure, now expected to be stronger than in
previous model runs, will follow the front and settle into the
area. As of the new 12z runs of the GFS and euro, this high
pressure will push the next expected subtropical wave back a full
day. Keeping the area dry until next Wednesday, when we resume a
more regular synoptic pattern.
a mix of ifr lifr CIGS will continue through the forecast, along
with reduced visibilities. To start the period this afternoon,
winds will be E at about 7-12 kts. Winds will then weaken during
the overnight hours tonight, and are expected to gradually shift
to W to NW by the early morning hours Thursday. The highest rain
chances remain across north georgia, with -shra anticipated across
the metro TAF sites and ahn tonight and into Thursday. With some
instability behind a warm front lifting northward across the area,
there is a chance for -tsra this afternoon and tonight. Some
elevated wind shear is possible in the northern sites between
about 02-08z. Left thunder out of the TAF for now but will
continue to evaluate the 02-08z timeframe.
Atl confidence... 18z update...
low confidence on elevated wind shear and thunder chances.
Medium confidence on all other elements.
Preliminary point temps pops
Athens 46 62 54 59 60 60 70 60
atlanta 50 64 55 63 70 60 60 60
blairsville 46 59 51 57 80 80 70 80
cartersville 50 60 52 63 80 70 70 80
columbus 60 76 62 76 50 50 60 50
gainesville 44 60 53 57 80 70 70 70
macon 57 77 61 72 30 50 50 50
rome 50 58 51 61 90 70 70 80
peachtree city 53 68 56 66 60 60 60 60
vidalia 61 80 63 79 10 30 30 40
Ffc watches warnings advisories
Flash flood watch through Thursday evening for the following
zones: banks... Barrow... Bartow... Carroll... Catoosa... Chattooga...
cherokee... Clayton... Cobb... Coweta... Dade... Dawson... Dekalb...
douglas... Fannin... Fayette... Floyd... Forsyth... Gilmer... Gordon...
gwinnett... Hall... Haralson... Heard... Jackson... Lumpkin...
murray... North fulton... Paulding... Pickens... Polk... South
fulton... Towns... Union... Walker... White... Whitfield.
Short term... King
long term... .Thiem
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|CHDS1 - Strom Thurmond Dam, SC||98 mi||90 min||NNE 8 G 9.9||44°F|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Gainesville, Gilmer Memorial Airport, GA||7 mi||77 min||E 12||1.50 mi||Fog/Mist||39°F||39°F||100%||1020.7 hPa|
|Gwinnett County Airport-Briscoe Field, GA||15 mi||74 min||E 8 G 16||2.00 mi||Light Rain Fog/Mist||40°F||39°F||100%||1021.7 hPa|
|Winder, Winder-Barrow Airport, GA||20 mi||75 min||E 6||1.50 mi||Fog/Mist||41°F||41°F||100%||1021.7 hPa|
Wind History from GVL (wind in knots)
|1 day ago||NW||NW||W||W||W||W||W||W||NW||NW||N||NW||E||E||E||E||E||E||E|
|2 days ago||E||E||E||E||E||N||NE||Calm||W||Calm||W||W||W||W||W||W||NW|
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GOES 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
Wind Forecast for Peachtree City, GA (16,3,4,5)(on/off)  Help
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