Sunday, May20, 2018

Marine Weather and Tides
Hiawassee, GA

Version 3.4
What's New / NOTES
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 6:27AMSunset 8:35PM Sunday May 20, 2018 1:52 PM EDT (17:52 UTC) Moonrise 10:39AMMoonset 12:01AM Illumination 33% Phase: Waxing Crescent; Moon at 6 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 Hiawassee, GA
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location: 34.92, -83.72     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 201154
area forecast discussion
national weather service peachtree city ga
754 am edt Sun may 20 2018

Prev discussion issued 420 am edt Sun may 20 2018
short term today through Monday ...

a moist airmass will remain across the area. Pwats of 1 to 1.5
inches this afternoon will increase Monday to 1.5 to 2 inches.

Convection today will once again be isolated to scattered across the
area as weak upper level ridging persists. A weak upper low over
the fl panhandle by tonight should aid in development to our south
and west and will need to watch west central ga through this
evening. Have once again opted to keep pops in the chance category
through this evening, as instability is moderate with little shear.

Any thunderstorms should remain below severe limits, but given the
pwats cannot rule out locally heavy rainfall with and storm that
does develop. As far as clouds, expect mainly mid and high clouds
this afternoon - mainly over central ga - and should see good
afternoon heating with temperatures near or just above yesterday
high temperatures. Have stayed close to a blend of guidance once
again today. Light south to southwest winds will prevail.

Overnight, any convection should diminish in coverage and intensity,
with patch fog developing in any areas impacted by heavy showers or
thunderstorms. As the upper low moves closer to cwa, expect
temperatures over central ga may be a degree or two cooler than
tonight. Light south winds will begin to shift to southeast.

As the upper low treks into east-central al by tomorrow, rain chance
will increase to good chance likely over central ga as well as far
north ga. Cloud cover should be more plentiful, with afternoon
temperatures cooler than yesterday or today. Southeast winds will
continue near 5 mph.

long term Monday night through Saturday ...

really not expecting much of a pattern change through the extended
forecast period. The long term forecast period now begins Monday
night where a broad scale view of the mid levels reveals a weak
ridge of high pressure in place over the southeast and lower ms
valley as a deep closed low digs into the great basin region of the
western us. Despite favoring larger scale forcing for descent
underneath the SE ridge... 00z guidance depicts a weak area of mid
level low pressure under the ridge located across SE al. This
disturbance will likely allow for isolated to scattered
showers isolated rumbles of thunder to linger across the area late
into the night... ESP across southwest portions of the cwa. This low
is expected to slowly meander under the ridge over georgia Tuesday
and through Wednesday. Although this feature should supply some
degree of additional forcing for ascent for precip... Think overall
conditions will be largely diurnal with best coverage during the
afternoon and evening both Tuesday and Wednesday... With isolated
showers continuing into the overnight.

By Thursday... Evidence of the weak low becomes less defined with
more of a ridge influence in the mid and upper levels. Unfortunately
the lower level regime will remain largely unchanged as persistent
high pressure over the atlantic continues to advect a very moist
airmass into the region. This will continue the chance for afternoon
and evening thunderstorms albeit not quite as widespread.

By the end of the week and into the weekend... Discrepancy still
exists in regards to the development of low pressure across the
northern gulf. While both the 00z ec and GFS show some degree of the
remnants of georgia's early week area of low pressure retrograding
into the gulf and redeveloping... The ec shows a better influx of
moisture from the caribbean. Regardless... Both models continue to
depict the development of low pressure troughing in the northern
gulf. In addition... Does not really matter whether the system
becomes tropical or not... It needs to be understood that this system
would have excellent access to deep gulf moisture and would provide
another mechanism for moderate to heavy precip across the region.

Will need to carefully watch this system given the persistent wet
pattern leading up to its possible development.


12z update...

expect scatteredVFR to prevail at atl area & ahn TAF sites
through 19-21z followed by bknVFR, with lowVFR high MVFR over
csg mcn. Patchy ifr MVFR visibility possible should improve
quickly (13-14z)as fog is shallow. Winds will be light, initially
favoring sw-s shifting to s-se 16-18z. Wind speeds should remain
below 6kts.

Atl confidence... 12z update...

medium to high confidence all elements.


Preliminary point temps pops
Athens 84 65 82 64 40 30 40 40
atlanta 84 67 79 66 50 40 50 40
blairsville 83 61 79 60 50 30 60 40
cartersville 86 66 81 64 50 30 50 50
columbus 86 68 82 68 40 40 60 50
gainesville 84 65 80 64 50 40 40 40
macon 84 67 82 67 40 30 50 50
rome 88 66 82 65 40 20 50 40
peachtree city 85 66 80 65 50 30 50 50
vidalia 82 68 83 68 50 30 40 50

Ffc watches warnings advisories

Short term... Atwell
long term... .Kovacik
aviation... Atwell

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Andrews-Murphy Airport, NC20 mi58 minW 92.00 miHeavy Rain69°F63°F82%1022.7 hPa

Wind History from RHP (wind in knots)
Last 24hrE3SW5W5W6SW5SW6CalmNW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW3W3W6
1 day agoW3S8SW4
2 days agoSE4CalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW10

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES Local Image of Southeast    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Peachtree City, GA (13,3,4,5)
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Ground Weather Radar Station Greer, SC
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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.