Friday, May24, 2019

Marine Weather and Tides
Homeland Park, SC

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 6:20AMSunset 8:33PM Friday May 24, 2019 8:50 PM EDT (00:50 UTC) Moonrise 12:00AMMoonset 10:21AM Illumination 66% Phase: Waning Gibbous; Moon at 21 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
    EDIT      (on/off)   Help

7 Day Forecast for Marine Location Near Homeland Park, SC
   Hourly   EDIT   Help
location: 34.46, -82.74     debug

Area Discussion for - Greenville-Spartanburg, SC
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kgsp 250000
area forecast discussion
national weather service greenville-spartanburg sc
800 pm edt Fri may 24 2019

Broad high pressure will persist over the southeast through at least
the early part of next week. This will limit daily shower and
thunderstorm activity and aid in promoting near record heat.

Near term through Saturday
As of 740 pm edt: conditions remain mostly quiet over the cwfa
this evening as temps are finally starting to come back down.

Our high temp here at gsp peaked at 94 degrees today which tied
the record high for this date. Over the past hour or so, a couple
of showers have developed over greenville and laurens counties,
however they have yet to produced any lightning. It's doubtful
that we'll see much more activity thru the rest of the evening
as any lingering sfc-based instability should be disappearing.

Otherwise, a broad 592 dm 500 mb ridge will remain sprawled across
the southeast tonight through Saturday. Any lingering convection
across the southern mountains and adjacent areas will quickly
dissipate with the loss of favorable diurnal heating early this
evening. Expect another very mild night with patchy, shallow fog
confined primarily to the mountain river valleys and near lakes.

The stalled frontal boundary to the north will sag much closer to
the northern tier through Saturday, with an uptick in coverage
expected along the spine of the mountains and out along i-40 and
points north. However, the boundary is expected to stay just out of
the forecast area before retreating back to the northeast late in
the day. Temperatures should be just about as warm Saturday
afternoon as observed on Friday, and less dew point mixing is
expected as surface winds toggle southerly, so heat index values
could see a modest uptick. Still anticipate values maxing out in the
95 to 100 range across the southeast half, so no heat advisories
will be needed.

Short term Saturday night through Monday
As of 206 pm Friday: the near-record heat will continue through
the rest of the memorial day weekend courtesy of a large upper
anticyclone over the deep south and the northern half of the gulf
of mexico, with little relief expected from diurnal convection. The
only showers expected should be isolated to the higher peaks of the
smokies and the balsam mountains in the afternoons. If there is
a saving grace, it's that dewpoints will probably mix out enough
each day to keep the heat index from becoming a factor, so what
we are saying is that it will be kind of a dry heat. The hottest
day will be Sunday, as the upper ridge should start to deamplify
on Monday. If you have outdoor plans over the long weekend, make
sure you stay hydrated and have a place to get out of the sun
during the heat of the day.

Long term Monday night through Friday
As of 132 pm Friday: the summer-like heat should continue through
the middle of the next week. Altho 500 mb heights will gradually
fall, the upper ridge will be maintained and might actually
sharpen a bit on Tuesday, which will continue to suppress the
deep convection in the afternoon. The axis of the upper ridge is
expected to slide off the east coast Tuesday night, and once that
happens, we will be exposed to slightly higher moisture with less
convective inhibition for the remainder of the week as the upper
flow flattens. From Wednesday onward, while temps will remain
above normal, each day might be slightly less hot with slightly
better coverage of showers and thunderstorms in the afternoon
or evening. The shower coverage will be no better than climo,
however. The only wildcard will be if we get into an MCS track
by the end of the week. So, we basically trade mid upper 90s but
dry on Tuesday for upper 80s but humid by Friday. I'll leave it
to the reader to decide if that is a fair trade.

Aviation 00z Saturday through Wednesday
At kclt and elsewhere: expect mostlyVFR conditions to prevail thru
the 00z TAF period. The only exceptions are a few hours of MVFR visby
at kavl and khky Sat morning in the 10 to 13z timeframe. Confidence
is not high that visibility will actually drop, however based on what
occurred this morning, I decided to include the restrictions again.

Winds should gradually become more nly to light and vrb later tonight
and during the overnight. They will continue to veer around to more
nely, and eventually sly to swly thru the day tomorrow. Otherwise,
i expect most sites to see just few to sctVFR level clouds thru the
period, with a diurnal peak of cumulus bases in the 5 to 7 kft range
for tomorrow.

Outlook: mountain valley fog will be possible each morning through
early next week. Diurnal convective chances will be limited due to
the persistent upper ridge pattern remaining in place.

Confidence table...

00-06z 06-12z 12-18z 18-00z
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
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHDS1 - Strom Thurmond Dam, SC 62 mi71 min NNW 4.1 G 6 90°F
LMFS1 - Lake Murray SC 82 mi31 min Calm G 1.9 88°F 1017.3 hPa

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Anderson, Anderson County Airport, SC3 mi1.9 hrsW 910.00 miFair91°F66°F44%1017.8 hPa
Clemson, Clemson-Oconee County Airport, SC17 mi57 minVar 410.00 miFair86°F69°F57%1018.3 hPa
Pickens County Airport, SC24 mi56 minSW 410.00 miFair87°F70°F59%1019 hPa

Wind History from AND (wind in knots)
Last 24hrS3CalmCalmCalmCalmCalmCalmCalmS5SW3CalmSW7SW6W7W9W7W9W8W8W6
1 day agoE11NE9NE6E9E6E3SE6CalmCalmN5CalmCalmSW7SW7SW8SW9--W8SW8SW7SW9S10S7SW8
2 days agoCalmCalmNE3NE4NE3NE4NE5NE5NE5NE4NE9NE8E11E11NE9E8NE7NE12

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Greenville-Spartanburg, SC (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Greer, SC
   (on/off)   Help
weather_mapweather_map weather_map

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 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.