Wednesday, September26, 2018

Marine Weather and Tides
Franklin, NC

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:20AMSunset 7:22PM Wednesday September 26, 2018 1:04 AM EDT (05:04 UTC) Moonrise 7:41PMMoonset 7:42AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 Franklin, NC
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location: 35.1, -83.39     debug

Area Discussion for - Greenville-Spartanburg, SC
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Fxus62 kgsp 260247
area forecast discussion
national weather service greenville-spartanburg sc
1047 pm edt Tue sep 25 2018

A cold front will move into the mountains Wednesday and stall across
the area. This front will help produce showers and thunderstorms as
it lingers over the forecast area into the weekend.

Near term through Wednesday
As of 1025 pm edt... Watching a slow-moving line of convection
crossing eastern tn attm. This activity should enter the smokies
after midnight, but is expected to weaken. May see a few lightning
strikes and torrential downpours in the western mountains before
daybreak, but otherwise it looks mostly dry overnight. Some increase
in clouds within a moist swly flow, and some patchy fog is expected,
especially in the mountain valleys. Min temps will be about 10-15
degrees above normal.

Otherwise, a weak sfc low pressure system over the great lakes
continues to drag a neutrally tilted cold front across W portions of
the ohio river valley S to near new orleans. This front will push
into the area on Wednesday. Scattered to numerous showers and tstms
is expected along and ahead of the front across the area. Moderate
instability and some upper level support will likely support some
gusty winds and small hail with the strongest thunderstorms
Wednesday afternoon and early evening. High temperatures Wednesday
are expected to rebound into the 80s east of the mountains where
better insolation is expected to only 70s at best across most
mountain locations.

Short term Wednesday night through Thursday night
As of 255 pm edt Tuesday: with an upper longwave trough across much
of the mid to eastern CONUS and atlantic ridge well in place,
scattered to numerous showers and thunderstorms are expected
throughout the short term forecast period, which begins Wednesday
night, as a cold front becomes stationary across the carolinas.

While the more favorable dynamics will stay just north of the fa on
Wednesday as the shortwave moves across the great lakes (as
highlighted in the current SPC day 2 convective outlook), per latest
guidance, enough available instability and low yet notable shear in
place in the evening could still spark a few isolated strong to
severe storms around the beginning of the forecast period. Also,
would not entirely rule out heavy rainfall localized minor flooding
with any storm as pw values will near 2 inches.

Into Thursday, latest guidance progs environmental conditions not as
conducive for a severe threat given persistent cloud cover slightly
lower high temps and thus, less instability than on Wednesday.

However, with the front stationary across the fa, a bit of a shear
axis with lowered instability could still pose a threat for an
isolated stronger severe storm. Temperatures throughout the forecast
period will remain just above normal.

Long term Friday through Tuesday
As of 220 pm edt Tuesday: the cold front stalled over the area in
the short term finally moves south of the area Saturday as high
pressure builds in from the north. However, a moist low level flow
southerly flow develops bringing moisture in over the building high
pressure. This creates a cold air damming scenario which remains in
place through Monday. The flow over the high isn't that strong and
there is dry air which works in from the north. Therefore, pops are
limited to the slight chance to low chance range through the period.

The air mass isn't especially cool either, so temps remain near nor
a little above normal. The center of the high moves off shore
Tuesday as a front moves into the ohio valley. The moist low level
flow continues keeping a chance of rain in the forecast. Temps will
a little above normal.

Aviation 03z Wednesday through Sunday
At kclt and elsewhere: low-level flow will turn out of the SW and
pick a bit overnight. This has pretty much cleared out the remainder
of the low clouds, except in the mountains. Guidance is mixed on how
much redevelopment of stratus will occur. The consensus is for MVFR
cigs to return near the eastern escarpment (meaning all TAF sites,
except kclt can expect at least a few hours of some MVFR CIGS late
tonight into early Wednesday). Later on Wednesday, the clouds should
lift toVFR, but with a front approaching from the west, scattered
to numerous shra and tsra are expected to develop in the aftn. This
activity will track northwest to southeast across the area Wed aftn
thru Wed evening. For now will go with vcts and -shra at kavl and
khky, and prob30 for the other sites.

Outlook: a front will stall across the region, remaining a trigger
point for showers and thunderstorms through at least Friday and
possibly into this weekend.

Confidence table...

02-08z 08-14z 14-20z 20-00z
kclt high 100% high 100% high 100% high 100%
kgsp high 95% med 64% med 62% high 100%
kavl med 72% high 92% med 68% med 73%
khky low 53% high 85% med 75% med 63%
kgmu high 100% med 78% med 65% low 59%
kand high 100% high 82% med 67% high 100%
the percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables and ensemble forecasts
are available at the following link:

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Macon County Airport, NC9 mi80 minN 05.00 miOvercast with Haze0°F0°F%1023.4 hPa

Wind History from 1A5 (wind in knots)
Last 24hrNE3CalmCalmCalmCalmCalmCalmCalmE3CalmSE3S4SE6S3CalmSE5CalmS3CalmCalmCalmCalmCalmW3
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3CalmS4S3S3W3CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3CalmCalmSE3SW6CalmCalmCalmCalmCalmCalmCalmCalm

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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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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Wind Forecast for Greenville-Spartanburg, SC (1,6,7,8)
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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.