Sunday, May26, 2019

Marine Weather and Tides
Charlotte, NC

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:10AMSunset 8:29PM Sunday May 26, 2019 11:30 PM EDT (03:30 UTC) Moonrise 1:06AMMoonset 12:03PM Illumination 43% Phase: Third Quarter Moon; Moon at 23 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 Charlotte, NC
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location: 35.21, -80.83     debug

Area Discussion for - Greenville-Spartanburg, SC
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Fxus62 kgsp 270237
area forecast discussion
national weather service greenville-spartanburg sc
1037 pm edt Sun may 26 2019

Broad high pressure will persist over the southeast through the
middle of the week. This will greatly limit daily shower and
thunderstorm activity and aid in promoting near record heat.

Thunderstorm chances will return from the west late in the week.

Near term through Monday
As of 1015 pm: line of convection quickly dissipated after sunset
across the northern cumberland plateau, and with little CAPE to work
with, doubt there will be any redevelopment as the residual moisture
enters the northern mountains. Pretty much all the latest guidance
is dry overnight. So have yanked out the mentionable pop. Otherwise,
the forecast looks on track, with only minor tweaks to the temps
overnight. Cannot rule out a stray shower or two, as the remnant
outflow pushes in. There will be an 500 mb vort lobe crossing the
area around the NE side of the large upper ridge overnight. This
will exit to our east early Monday.

The flat southeast ridge will remain in place through Monday. Little
to no upper forcing is apparent and warm and dry profiles will
persist. The NAM does feature a rogue thunderstorm or two on Monday
afternoon on the weak boundary left over from Sunday night storms to
the north, but this appears too uncertain to mention. A weak surface
lee trough should persist just east of the mountains. Low-level
thicknesses will comparable or a touch lower than on Sunday. Today's
maxes should thus be an upper bound for Monday afternoon.

Short term Monday night through Wednesday
As of 205 pm Sunday: the short-term forecast picks up at 00z on
Tuesday with the long-lived upper ridge still in place across the
region and deep upper trofing over the west. Upper ridging is
expected to remain intact thru the period with some degree of minor
flattening possible during the period. In addition, some upper
shortwave energy is expected to pass just to our north early tues
which could provide some weak upper support for convection.

At the sfc, broad subtropical high pressure will remain in control
of our synoptic pattern thru the period. The latest guidance does
try to develop some sort of weak lee trof over the carolinas late
Tuesday into Wednesday, however its impact should be negligible.

This persistent summer-time pattern will keep skies partly cloudy
to mostly clear and convective chances to a minimum each day. I
kept a slight chance for diurnally-driven showers tstorms over the
higher terrain for Wednesday owing to a weakening of the downslope
wind component, and less overall capping in the vertical profiles.

Otherwise, the main concern continues to be the well-above climo
temps each day. High temperatures will reach the mid 90s each day,
but fortunately dewpts should mix down to the upper 50s to lower
60s, thereby keeping heat indexes very close to the actual temp.

The public should take steps to beat the heat by avoiding the
hottest part of the day when possible, and staying well-hydrated.

Long term Wednesday night through Sunday
As of 1215 pm Sunday: persistent upper ridge atop the SE CONUS will
start to dampen on Thursday, and the consensus is for it to become
marginally less hot to start off the period. Outside of the
lingering heat, sensible wx will be limited to a token diurnal deep
convective threat for the mountains. The transition to a flatter
flow and falling upper heights atop the cwfa is expected into
Friday. Conversely, MAX temperatures will continue to lower from
persistence and the diurnally enhanced tstms chances will creep
upward. For next weekend, the upper pattern acrs the region is
shaping up to be quasi-zonal, and perhaps by the new day 7, tstm
chances will be closer to the early june-climo regionwide. Despite
the upper ridge being suppressed well south of the region, a bubble
of warmer than normal llvl air is progged to linger with daily
maximum temperatures still a couple of categories above climo.

Aviation 03z Monday through Friday
At kclt and elsewhere:VFR conditions expected thru the period,
with strong upper ridge still in place as we head into the new work
week. The few cumulus that are out there to start the 00z tafs
should dissipate, with a few more high clouds arriving from the
northwest after sunset. A cumulus field will redevelop on Monday
with heating. But warm and dry vertical profiles will keep all of
the terminals free of convection through the period. Winds should
return to NW wnw and be light overnight thru Monday morning. NW to
wnw winds will pick up somewhat by early aftn, with some low-end
gusts expected at kavl and kclt. A few occasional gusts mid-to-late
aftn will be possible at other sites as well.

Outlook: mountain valley fog will be possible each morning through
the week. Diurnal thunderstorm chances will be limited due to the
persistent upper ridge pattern remaining in place. The ridge will
begin to break down on Thursday and Friday with shower and
thunderstorm chances returning from the west.

Confidence table...

02-08z 08-14z 14-20z 20-00z
kclt high 100% high 100% high 100% high 100%
kgsp high 100% high 100% high 100% high 100%
kavl high 100% high 100% high 100% high 100%
khky high 100% high 100% high 100% high 100%
kgmu high 100% high 100% high 100% high 100%
kand high 100% high 100% high 100% 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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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 61 mi61 min SE 1.9 G 1.9 73°F
LMFS1 - Lake Murray SC 80 mi71 min W 4.1 G 6 84°F 1015.9 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi39 minSSW 310.00 miA Few Clouds80°F64°F58%1015.8 hPa
Concord Regional Airport, NC14 mi41 minN 010.00 miFair77°F64°F65%1017.6 hPa
Gastonia Municipal Airport, NC17 mi37 minSW 310.00 miFair74°F66°F76%1015.9 hPa
Monroe, Monroe Airport, NC17 mi38 minSW 310.00 miFair75°F64°F71%1016 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi37 minSW 310.00 miFair76°F61°F60%1015.3 hPa

Wind History from CLT (wind in knots)
Last 24hrCalmCalmN4CalmCalmCalmW4CalmCalm4NW5NW4W6W44NW7
1 day agoCalmN3NW3CalmN3N6N7N5N6NE5NE6E654SW4SW6SW8SW7SW7W6W4SW3S3S3
2 days agoSW3SW3SW3CalmS6CalmW3CalmCalm4SW43W7NW10

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 Mid-Atlantic    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Greenville-Spartanburg, SC (23,6,7,8)
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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.