Marine Weather and Tides
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
|Sunrise 7:39AM||Sunset 7:47PM||Sunday March 18, 2018 7:18 PM EDT (23:18 UTC)||Moonrise 7:34AM||Moonset 8:02PM||Illumination 5%|
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7 Day Forecast for Marine Location Near Hiawassee, GAHourly EDIT Help
Area Discussion for - Peachtree City, GA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kffc 181920|
area forecast discussion
national weather service peachtree city ga
320 pm edt Sun mar 18 2018
Short term tonight through Monday night
Regional radar view shows considerable activity presently over sw
alabama riding the energy provided by embedded shortwave in
largely westerly flow aloft. Expect the most robust of this
activity to ride along the best instability axis this evening
which is roughly from columbus to vidalia and points southward
currently. Some CAPE values just south of the area running close
to 1500 j kg so some strong to severe activity not out of the
question and SPC slight risk for just a few counties looks on
For the remainder of the overnight period, rain chances will
increase rapidly as istentropic processes combine with shortwaves
to produce widespread rain with embedded thunderstorms for
southern sections. Previous model runs had indicated the potential
for some isolated flooding across the southern tier. Latest runs
though indicate around an inch to an inch and a quarter which
central ga should be able to handle through the overnight period.
As far as severe potential into the overnight, developing easterly
flow should inhibit expansion of instability axis and even
elevated CAPE looks manageable through 12z Monday so prospects
look low at this time for any robust convection.
Very difficult call for Monday afternoon as some models indicate
low clouds and stable conditions will stay with the entire area
for the balance of the day. But there is a very sharp instability
gradient with in excess of 2000 j?kg just along and south of our
southern CWA border. Shear not the best but sufficient for some
rotating discreet cells should activity be able to develop across
the southern tier.
Final wave which looks to be of the most concern will be Monday
evening into the first part of the overnight period. Even
instability associated with this feature is less in the models
than this time a few days ago. But with positive CAPE values, feel
activity that develops over alabama will be able to maintain
itself over the local area and take advantage of very strong shear
values to produce strong to severe storms. Pretty much everything
on the table for this one including damaging winds, isolated
tornadoes and large hail. Some hi res guidance wants to weaken
this feature as it gets south of the metro but thinking this may
be premature given similar events in the past and will advertise
severe risk well into central ga for this one.
long term Tuesday through Sunday ...
mainly only tweaks to the long term based on the latest guidance.
Thunderstorm chances will be over portions of central ga mainly
e and S of mcn on Tuesday and then just chances for showers
into Wednesday favoring N and E ga.
as a surface low moves across tennessee Monday evening, widespread
thunderstorms will be ongoing and rapidly progressing eastward
Monday night ahead of the attendant cold front. The severe
thunderstorm threat will have increased by this point with
substantial surface instability and favorable shear in place.|
Supercellular convection with the threat for large hail, damaging
winds, and tornadoes will be a concern during the evening hours. The
highest severe threat will exist across portions of north and
central georgia outside of the influence of the wedge which, though
retreating, will help limit instability across northeast georgia.
The overall severe threat will then quickly diminish from the
northwest as the cold front sweeps southeastward through early
Additional showers will return on Tuesday as a followup upper wave
and cold front push into the region. Northwest winds will pickup
late Tuesday behind this secondary cold front, and significantly
cooler temperatures will advect into the state. Before the light
rain ends, some brief rain snow mix may be observed across the high
elevations of far north georgia during the early morning hours
Wednesday; however, accumulations or impacts would not be a concern.
Wednesday will bring clearing skies and below average temperatures
with a sunny and cool Thursday also on tap. Temperatures will
rebound by Friday with the next chance of rain likely holding off
until Saturday morning at the earliest.
Aviation 18z update... Challenging forecast as we have three
potential waves of precipitation moving across the terminals.
Fortunately, it looks as though the third wave is now delayed
enough to be just outside the atl TAF cycle. Prior to this, we
will be dealing with some developing CIGS as well with bknVFR
arriving later this evening... Transitioning to MVFR around 08z and
quickly to ifr early Monday morning. Light rain will accompany
this as well for all sites although will need to monitor for shra
at csg and mcn with tsra not out of the question either this
evening. Prob30 slated for atl aft 18z Mon although as
mentioned... Majority should be after 00z.
Atl confidence... 18z update...
medium on tsra chances and ifr duration mon.
High on remaining elements.
Preliminary point temps pops
Athens 54 65 54 70 80 60 100 40
atlanta 55 68 54 67 90 50 100 40
blairsville 49 61 47 62 70 60 100 50
cartersville 53 69 51 66 80 80 100 50
columbus 58 74 58 73 100 40 80 30
gainesville 52 62 52 67 70 60 100 50
macon 57 72 59 75 100 60 60 50
rome 53 69 51 64 80 80 100 50
peachtree city 55 71 54 69 90 40 100 40
vidalia 59 73 63 77 90 60 40 60
Ffc watches warnings advisories
Short term... Deese
long term... .Bdl
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|Andrews-Murphy Airport, NC||20 mi||44 min||W 4||10.00 mi||Overcast||65°F||41°F||43%||1010.5 hPa|
Wind History from RHP (wind in knots)
|1 day ago||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||E||Calm||W||Calm||W||SW|
|2 days ago||W|
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Wind Forecast for Peachtree City, GA (19,4,5,8)(on/off)  Help
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