Wednesday, March29, 2017

Marine Weather and Tides
Milan, GA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:20AMSunset 7:51PM Wednesday March 29, 2017 10:39 PM EDT (02:39 UTC) Moonrise 7:38AMMoonset 8:45PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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 Milan, GA
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location: 31.95, -83.02     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 300145
area forecast discussion... Updated
national weather service peachtree city ga
945 pm edt Wed mar 29 2017

No changes planned for the forecast.


Short term /tonight through Thursday night/
Old frontal boundary situated across south central ga should begin
to push northward tonight in response to a cold front moving into
the mississippi river valley. This old front should orient itself
almost north/south across the far eastern cwfa on by early Thursday.

The cold front should remain well west of the cwfa until later in
the day Thursday.

There are some timing differences with the cold frontal passage
between the NAM and gfs. This also shows up in our locally run
models, one based on the GFS and one based on the nam. The GFS is
faster with the precip onset and fropa, while the NAM lags behind a
few hours. The ecwmf looks to be right smack in between the nam
and gfs.

Isolated showers/thunderstorms are possible late this afternoon and
evening, but should diminish quickly with the loss of heating.

Thursday will be a little complicated, because the highest pops will
be centered around the two boundaries, the approaching front in the
west and the old stationary front across eastern ga. The middle part
of the cwfa will have the least amount of precip coverage for most
of Thursday. The chances for precip will begin to increase quickly
from the west late Thursday afternoon/early evening as convection
along and ahead of the cold front approaches the area.

Do think that scattered showers and thunderstorms will develop out
ahead of the main frontal boundary tomorrow afternoon during peak
heating. Lapse rates will be steep tomorrow afternoon and the some
surface instability will be present, so there is some potential for
strong/isolated severe storms tomorrow afternoon ahead of the main
show in the evening and overnight hours. The better potential for
strong/severe thunderstorms should be in the evening/overnight hours
with any convection along the front/squall line. Good mid level
support, steep lapse rates and decent shear will all be present.

Moderate surface instability will also be present.


Long term /Friday through Wednesday/
Fairly active pattern to continue through this long term period.

Short wave by Friday will be weakening/filling while traversing
east across the ohio valley. Ridging aloft quick to build late
Friday and Saturday so above normal temps likely this weekend.

Upper ridge axis passes east of the state Sunday morning. Clouds
will increase ahead of next wave, which is much more amplified
with correspondingly slower forward speed and more substantial
rainfall and supportive of linear storm modes. This wave also
expected to follow more southern track than previous waves. 12z
ecmwf a little deeper and slower with upper low than other 12z

By the time the main forcing from this wave arrives Monday
morning, upper/sfc low already occluding and greatest instability
shifts south of cwa. As with this week's system, cad will be in
place over NE counties prior to onset of precip, further reducing
instability over north ga. Could see swath of heavy rain due in
this pattern as strong baroclinic zone will be in place and
associated isentropic lift also fairly strong and persistent.

Wouldn't be surprised if later medium range model runs spit out
3-6 inches of rain if we can get higher pw air into the area. 12z
gfs already indicating this kind of scenario. With long term
drought conditions firmly in place, we could certainly use this
amount of rainfall.

Wraparound precip associated with upper low will persist Tuesday.

Finally next vigorous broad/large upper low progged to track
further north over the central CONUS into the oh valley Wednesday.

And while forecasts this far out are unreliable, a track that far
north with strong mean flow in early april usually means
significantsevere weather likely. Again too far out to hang your
(or anyone's) hat on but something to keep an eye on.


00z update...

not expecting much in the way of showers or thunderstorms tonight.

Better chances Thursday afternoon and evening. ExpectVFR through
most of the night with possibility of some MVFR around sunrise.

Not very confident on that since airmass is fairly dry. Winds
should be light and variable or light southeast overnight and
increasing from the southeast Thursday.

//atl confidence... 00z update...

high confidence all elements... Except
medium on MVFR toward sunrise.


Preliminary point temps/pops
Athens 60 79 60 75 / 0 40 90 70
atlanta 61 80 59 73 / 10 40 90 40
blairsville 55 71 54 66 / 10 40 90 50
cartersville 59 79 57 73 / 10 40 80 20
columbus 60 83 62 78 / 20 30 80 40
gainesville 59 76 57 72 / 5 40 90 50
macon 60 84 62 79 / 20 30 80 60
rome 58 79 56 73 / 10 40 80 20
peachtree city 57 81 58 75 / 10 40 90 40
vidalia 63 85 64 82 / 20 40 50 60

Ffc watches/warnings/advisories

Short term... 41
long term... .Snelson
aviation... 41

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 98 mi99 min Calm 68°F 1016 hPa (+1.0)64°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastman, Heart of Georgia Regional Airport, GA19 mi44 minN 010.00 miOvercast75°F53°F48%1016.6 hPa

Wind History from EZM (wind in knots)
Last 24hrCalmCalmS4CalmCalmCalmCalmCalmCalmCalmN3CalmE3SE3CalmCalmW5SW5W3SW4CalmCalmCalmCalm
1 day agoSE3CalmS4CalmS3S3CalmCalmCalmCalmW5W6W7
2 days agoSE6SE5S5SE4S3SE3CalmCalmCalmCalmCalmSW4W4W5SW4CalmW5SW6S7S6SW3CalmCalmCalm

Tide / Current Tables for Burnt Fort, Satilla River, Georgia
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Burnt Fort
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Wed -- 02:13 AM EDT     3.84 feet High Tide
Wed -- 07:19 AM EDT     Sunrise
Wed -- 08:33 AM EDT     Moonrise
Wed -- 09:20 AM EDT     -0.53 feet Low Tide
Wed -- 02:41 PM EDT     3.62 feet High Tide
Wed -- 07:45 PM EDT     Sunset
Wed -- 09:37 PM EDT     -0.56 feet Low Tide
Wed -- 09:39 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Belfast, Belfast River, Georgia
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Wed -- 05:02 AM EDT     -1.19 feet Low Tide
Wed -- 07:17 AM EDT     Sunrise
Wed -- 08:30 AM EDT     Moonrise
Wed -- 11:13 AM EDT     8.90 feet High Tide
Wed -- 05:22 PM EDT     -1.30 feet Low Tide
Wed -- 07:43 PM EDT     Sunset
Wed -- 09:37 PM EDT     Moonset
Wed -- 11:30 PM EDT     9.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Peachtree City, GA (22,6,7,8)
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Ground Weather Radar Station Robins AFB, GA
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weather_mapweather_map weather_map

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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 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 numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at 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.