Saturday, June23, 2018 L-36.com


Marine Weather and Tides
Oakwood, GA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 6:22AMSunset 8:52PM Saturday June 23, 2018 2:10 PM EDT (18:10 UTC) Moonrise 3:50PMMoonset 2:29AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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 Oakwood, GA
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location: 34.24, -83.95     debug


Area Discussion for - Peachtree City, GA
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Fxus62 kffc 231800 aaa
afdffc
area forecast discussion... Updated for aviation
national weather service peachtree city ga
145 pm edt Sat jun 23 2018

Update
Have increased pops to account for developing showers and storms
moving into the area from al. No other changes at this time.

41

Previous
Near term forecast in pretty good shape. Increased pops late
morning and midday over westcentral ga area based on increasing
coverage intensity of convection over northern al ms.

Snelson

Prev discussion issued 526 am edt Sat jun 23 2018
short term today through Sunday ...

main concern is likelihood and timing of strong svr storms late this
afternoon and evening. Also concerned about excessive heat.

Slow moving upper wave over midwest states with unseasonably strong
westerlies south across southern states including ga... Still in
place. While best severe storm ingredients may remain west of ga
will still be enough CAPE and vertical wind shear for isolated
severe storms late afternoon and evening. Href MLCAPE should be 2000-
2500 j kg, which is less than the 3000 or so we saw yesterday. 0-6km
bulk shear also strong, 25-30kts, with aforementioned westerlies in
place, but low level shear somewhat weak during peak instability
this afternoon, 0-1km SRH only progged around 50-100 m2 s2 by href.

Will likely not see as many severe storms as yesterday with these
values but sufficient for another round of atypical fast-moving
multicell qlcs and brief supercell storms. No strong consensus with
hires models on timing and coverage. Some indication that first
round could go up over middle ga first then subsequent round coming
in from al into north ga. Main threats will be damaging wind but
cant rule out brief weak tornado with any supercell storm or qlcs-
boundary interaction.

Sunday should see another round of isolated storms but less
instability and much less coverage as upper low continues to slide
east away from the area.

Heat index values likely to exceed advisory criteria in far
southeast counties. Will continue to monitor this as new guidance
comes in.

Snelson
long term Sunday night through Friday ...

still not much change in the over all pattern for the next 6
days, but we may be seeing the beginning of a pattern shift by
day 7. North and central ga will stay in west to northwesterly
upper level flow through Wed thu. This will allow waves and
moisture to continue to move across the area keeping the
southeastern u.S. Convectively active through the period. Still
expecting mainly diurnally driven storms each day as instabilities
peak everyday between 18z-00z across the cwa. The airmass is also
expected to stay fairly moist with pws in the 1.5 to 1.9 inch
range through day 6 7 as well. By Friday it looks like the upper
level flow begins to turn to the NE as a wedge of surface high
pressure build down the eastern seaboard. If this happens we could
see mainly cloudy skies for the Friday Sat with temps dipping a
bit more into the 80s. This is still 7 to 8 days away and do not
have a lot of confidence in this. This is also the first time the
models are showing a possible pattern shift in about a week or
so. As for now will continue with a steady as she GOES approach to
the forecast and keep highs in the lower 90s and chance pops
every afternoon through day 7.

01

Aviation
18z update... Should be mostlyVFR this afternoon by but some MVFR
ceilings are developing due to showers and thunderstorms. Some MVFR
stratus possible toward sunrise. Convection should continue to
develop through the evening and diminish later tonight. Winds should
remain on the west side... Occasionally gusty this afternoon.

Expecting overall fewer thunderstorms on Sunday.

41
atl confidence... 18z update...

medium on ceilings this afternoon and overnight.

High on all other elements.

41

Preliminary point temps pops
Athens 90 72 94 73 40 10 20 20
atlanta 89 74 93 75 60 20 20 10
blairsville 83 66 86 67 40 20 30 30
cartersville 88 71 92 72 60 20 20 20
columbus 92 75 95 75 40 10 20 10
gainesville 88 72 91 73 40 20 20 20
macon 92 74 96 74 50 20 20 10
rome 88 71 92 72 60 30 20 20
peachtree city 89 72 94 73 60 20 20 10
vidalia 94 76 96 76 30 20 20 10

Ffc watches warnings advisories
None.

Short term... 41
long term... .01
aviation... 41


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gilmer Memorial Airport, GA7 mi18 minVar 410.00 miMostly Cloudy83°F72°F70%1013.9 hPa
Gwinnett County Airport-Briscoe Field, GA18 mi15 minWSW 1110.00 miMostly Cloudy84°F73°F72%1014.8 hPa
Winder, Winder-Barrow Airport, GA23 mi36 minSW 910.00 miMostly Cloudy86°F71°F62%1015.6 hPa

Wind History from GVL (wind in knots)
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Last 24hrSW11
G17
W9
G19
SW6W9SW5CalmCalmSW3SW3SW4SW5SW4S3SW3SW7W9
G19
W6W8W12W8W11
G18
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SW104
1 day agoW10W10W9SW7SW5SW5SW7SW6SW6SW5SW5W10W8
G16
W6SW5W9W7W7W5W13W12W12
G22
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SW14
G19
2 days agoNW8W7
G18
W10NW9W9NW9NW5W4W6W5NW6NW6NW6NW6NW4W4CalmW34SW3W6W8W8W9

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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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Peachtree City, GA (14,3,4,5)
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Ground Weather Radar Station Atlanta, GA
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Disclaimer:
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 L-36.com. 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 L-36.com 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.