Marine Weather and Tides
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.
|Sunrise 6:08AM||Sunset 8:44PM||Sunday June 25, 2017 4:55 AM EDT (08:55 UTC)||Moonrise 6:53AM||Moonset 9:15PM||Illumination 2%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Cornelius, NCHourly EDIT Help
Area Discussion for - Greenville-Spartanburg, SC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kgsp 250840|
area forecast discussion
national weather service greenville-spartanburg sc
440 am edt Sun jun 25 2017
A cold front will settle southeast of the region this morning
with drier and cooler air beginning to spread in from the northwest.
These conditions are expected to persist over the forecast area
through much of the week as high pressure remains to our north.
As the high moves offshore, moist southerly flow will return
towards the end of the week.
Near term through tonight
As of 430 am edt Sunday: grids all look fine for the early morning
update; no changes. Big change starts today in the wake of a cold
front, which had worked its way south of the forecast area by afd
time. Longwave upper trough axis just to our west will continue to
push east, with thicknesses decreasing as surface high pressure
begins ridging in from the west. The trough will make little
progress through the period, but the airmass change will be felt in
the form of much lower dewpoints, especially tonight. High temps
today will likely be similar to those yesterday (due to less cloud
cover) except maybe in the mountains, though this is still a handful
of degrees below seasonal normals. Overnight lows tonight will be a
good 5 or so degrees below what we'll see this morning, and ranging
anywhere from 3-8 degrees below seasonal normal. Overall, a really
pleasant day for late june.
Short term Monday through Tuesday night
As of 250 am edt Sunday: the short-term fcst picks up at 12z on
Monday with longwave upper trofing centered over the great lakes
and steep upper ridging in place over the western conus. By early
Tuesday, an upper shortwave will dig southward on the backside
of the upper trof, providing increased upper-lvl divergence just
ahead of it. The shortwave axis is expected to move overhead tues
afternoon and then offshore by early Wed with heights beginning
to recover in its wake. At the sfc, a lingering frontal bndy will
be located over the sc coast early Monday and slowly drift offshore
later in the day evening. The rest of the period is marked by the
canadian high sliding SE and towards our area on Tuesday before
ending up just to our north by the end of the period, 12z wed.
As for the sensible fcst, most of the period should be dry. I do
have some slight chance pops on tues as the upper shortwave
approaches the area and produces favorable ascent especially over
the higher terrain. Temps will be 1 to 2 categories below normal
for late june.
Long term Wednesday through Saturday
As of 235 am edt Sunday: the extended fcst picks up at 12z on|
Wednesday with an upper shortwave moving off the atlantic coast.
As it does, heights begin to rebound over the fcst area as upper
ridging starts to build to our south. Another longwave upper trof
approaches the great lakes on Friday and then gradually slides
to our north over the weekend acting to flatten the ridge to our
south. At the sfc, broad high pressure will be centered just to
our north by early Wednesday with below normal temps in place
over the region. The high will slide off the atlantic coast on
Thursday putting the cwfa back under warmer and more moist sly
low-level flow for the end of the work week. A cold front will
approach the fcst area from the west on Saturday, but is not
expected to move thru the cwfa until the end of the period on
Sunday. As for the sensible wx, Wednesday should be dry with the
high over us. Thurs and Fri will see a return to a more typical
summertime pattern with slight to solid chances for tsra each day.
Chances for widespread tsra increase on Sat as the front moves
into the fcst area. Temps and dewpts will start out about a category
below normal and steadily warm thru the period with values reaching
normal by the end of the work week.
Aviation 09z Sunday through Thursday
At kclt and elsewhere: no changes to the kclt TAF for the 09z amd,
but there are some ifr CIGS just to the S of kclt, so will monitor
that closely in case a brief tempo is needed through sunrise.
Otherwise,VFR through the period for all but kand, where lingering
ifr to lifr stratus will scatter out shortly, but should see MVFR to
ifr vsby remain through daybreak. For other sites, only some passing
high to occasionally mid-level clouds through the period. NW winds
veering more N through the period, fairly light this morning but
picking up around or just above 5kt this afternoon, though kavl
could see some low-end gusts.
Outlook: expect light winds and mostly clear skies through Thursday
as high pressure dominates the weather.
08-14z 14-20z 20-02z 02-06z
kclt high 98% 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 low 59% 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 StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|WATS1 - Lake Wateree, SC||78 mi||65 min||SSW 1.9 G 4.1||71°F||1016.9 hPa|
|LMFS1 - Lake Murray SC||95 mi||35 min||W 2.9 G 6||74°F||1015.9 hPa|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Concord Regional Airport, NC||11 mi||65 min||NNW 3||10.00 mi||Fair||70°F||66°F||88%||1017.9 hPa|
|Lincolnton, Lincolnton-Lincoln County Regional Airport, NC||13 mi||45 min||N 0||10.00 mi||Fair||67°F||67°F||99%||1017.6 hPa|
|Charlotte, Charlotte / Douglas International Airport, NC||17 mi||63 min||WNW 3||10.00 mi||Mostly Cloudy||70°F||66°F||90%||1016.3 hPa|
|Gastonia Municipal Airport, NC||21 mi||61 min||N 0||10.00 mi||Fair||70°F||66°F||90%||1016.5 hPa|
|Statesville Municipal Airport, NC||22 mi||75 min||NNW 3||10.00 mi||Overcast||70°F||69°F||100%||1017.6 hPa|
Wind History from JQF (wind in knots)
|1 day ago||S||S||SW||SW||SW||SW|
|2 days ago||W||Calm||Calm||Calm||SW||W|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Mid-Atlantic EDIT
Wind Forecast for Greenville-Spartanburg, SC (4,6,7,8)(on/off)  Help
Ad by Google
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.