Monday, March18, 2019

Marine Weather and Tides
Indian Trail, 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 7:27AMSunset 7:33PM Monday March 18, 2019 12:22 PM EDT (16:22 UTC) Moonrise 3:57PMMoonset 5:02AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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 Indian Trail, NC
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location: 35.07, -80.68     debug

Area Discussion for - Greenville-Spartanburg, SC
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Fxus62 kgsp 181450
area forecast discussion
national weather service greenville-spartanburg sc
1050 am edt Mon mar 18 2019

Expect dry conditions this week with below normal temperatures
into mid week, then a warming trend into the weekend. The weather
becomes a little more active next week.

Near term through tonight
As of 1045 am: breezy northwest winds in the wake of a dry cold
front will be mainly focused across the mountains this afternoon,
but low end gusts are also possible at times into the piedmont. The
dry air mass, modifying effects of downslope flow and sunny skies
will largely counter cold air advection east of the mtns and allow
temp to rise to near if not a few degrees shy of Sunday's highs
(m50s to l60s) with 40s to near 50 mtns. Minimum humidity this
afternoon will likely fall between the u10s to m20s across much of
region, leading to elevated fire danger. A fire danger statement
remains in effect for later today for northeast ga as a result of
the dry conditions. The 1030+ mb high will settle just to the north
of the region, continuing to support the cool and dry continental
airmass in place with light northeast winds atop the region. Min
temps from the 20s to mid 30s will be common across the area tonight
due to good radiational cooling conditions (light winds, clear skies
and low dewpoints).

Short term Tuesday through Wednesday night
As of 225 am edt Monday: strong, cool, and dry high pressure builds
into the area Tuesday then weakens and slides east on Wednesday. An
upper low moves out of the plains and into the mid-south by
Wednesday night. There is a surface low associated with this system
but it is weak with no gulf moisture inflow ahead of it. There will
be an increase in clouds Wednesday and Wednesday night, but precip
remains to the west. Highs Tuesday will be around 10 degrees below
normal. The atmosphere will be dry with rh values falling to around
25 percent across NE ga. Winds will be relatively light, but a fire
danger statement may be needed for NE ga. Lows Tuesday night will be
nearly 10 degrees below normal. The air mass moderates Wednesday
with highs around 5 degrees below normal. Dew points will also be
higher keeping rh values above 25 percent but still dry. Lows
Wednesday night will be a couple of degrees below normal.

Long term Thursday through Sunday
As of 345 am edt Monday: the upper low from the end of the short
range moves south of the area Thursday. The associated surface low
weakens and moves south of the area as well. Looks like there will
be enough moisture and forcing for scattered light showers across
the mountains. Can't rule out some isolated showers across the nc
piedmont, but kept the forecast dry for now given the lack of
southerly low level moisture inflow and weakening forcing. Temps
will be near to slightly below normal.

Dry high pressure builds in on Friday and slides across the area
Saturday. The ECMWF has a colder air mass than the GFS as it shows a
secondary short wave dropping across the area Friday resulting in
lower thickness values with a slower recovery Saturday. For now,
have gone with a model blend for temps which are near normal Friday
then a few degrees above normal Saturday.

Short wave ridging builds in on Sunday ahead of an upper low moving
out of the rockies. With the ridging in place, the low moves north
across the plains with some short wave energy rotating around the
low toward the area. With the riding in place, this energy weakens
as it moves toward the area. Return flow does develop between the
departing high pressure and surface low moving into the ms river
valley. However, it remains weak and relatively dry through the day.

Therefore, have kept the forecast dry. Highs will be 5 to 10 degrees
above normal.

Aviation 15z Monday through Friday
At kclt and elsewhere:VFR CIGS vsbys expected thru the TAF period.

Sfc high pressure building into the region will likely support wind
gusts of 15-20 kts at times between 15-02z.

Outlook: dry weather continues thru at least midweek. A prolonged
period ofVFR conditions is expected.

Confidence table...

14-20z 20-02z 02-08z 08-12z
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 51 mi52 min N 6 G 9.9 62°F
LMFS1 - Lake Murray SC 74 mi62 min N 4.1 G 8 57°F 1022.7 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Monroe, Monroe Airport, NC5 mi29 minN 810.00 miFair56°F26°F32%1024.1 hPa
Charlotte, Charlotte / Douglas International Airport, NC17 mi30 minNNW 810.00 miA Few Clouds57°F24°F28%1023.3 hPa
Rock Hill, Rock Hill - York County Airport, SC21 mi28 minVar 610.00 miFair56°F28°F36%1023.4 hPa
Concord Regional Airport, NC22 mi92 minN 1110.00 miFair54°F26°F35%1024.4 hPa

Wind History from EQY (wind in knots)
Last 24hrN3NE65S4CalmSW4NW4CalmCalmCalmS3CalmCalmCalmSW3W3SW5W5W3CalmSW3N7N10N8
1 day agoN8
2 days agoSW17

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    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 (12,3,4,5)
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Ground Weather Radar Station Columbia, 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.