Tuesday, March28, 2017 L-36.com

Marine Weather and Tides
Charlotte, NC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:12AMSunset 7:43PM Tuesday March 28, 2017 9:49 AM EDT (13:49 UTC) Moonrise 6:47AMMoonset 7:31PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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 281053
area forecast discussion
national weather service greenville-spartanburg sc
653 am edt Tue mar 28 2017

A cold front will approach from the northwest today and settle
southeast of the area tonight into Wednesday. Drier weather will
develop as high pressure builds southward from eastern canada along
the east coast. Moisture will gradually return on Thursday, with
abundant moisture setting up by Friday as a strong low pressure
system moves east from the mississippi river valley. Drier weather
will return for the weekend.

Near term /through tonight/
As of 645 am edt: pops have been trimmed back to feature mainly
scattered showers across the charlotte area and lower piedmont for
the next couple of hours as a vigorous wave lifts by to the north.

The latest surface analysis shows a front settling southeast of the
ohio valley and this boundary is expected to push in the northern
tier through the afternoon hours. Mid level drying will work in from
the west behind the wave, but low levels will remain moist in the
pre-frontal airmass and scattered thunderstorms along and ahead of
the boundary are expected - especially out across i-77 this

Westerly downsloping flow will work against coverage in most other
foothill and lower piedmont locations through late day. Upper
ridging will develop tonight as the surface cold front gradually
settles off to the southeast by daybreak Wednesday.

Short term /Wednesday through Thursday/
As of 255 am edt Tuesday: upper ridging will build over the area
through Wednesday east of a strong closed low moving across north
texas. The passing surface cold front will settle well south of the
region and high pressure will nose down east of the appalachians
from the great lakes/eastern canada through Wednesday night. Despite
the fropa, good insolation will boost temps back into the upper 70s
to lower 80s east of the mountains Wednesday afternoon.

The upstream low pressure system will lift northeast through the
southern plains on Thursday with persistent ridging downstream
across the southeast. Very weak upglide may get reestablished over
the developing cold air damming as early as late wed. Night, with
pop increasing gradually through Thursday. Will lean toward the
cooler MOS temps for Thursday afternoon with cold air damming onset
quite possible.

Long term /Thursday night through Monday/
As of 255 am edt Tuesday: heights will fall from the mid mississippi
river valley and the lower oh valley toward the tn river valley
through the day on Friday. This trough should cross our region
Friday night. Improving upglide moisture will get established well
east of this system by Thursday evening and deeper moisture will
arrive mainly Friday through Friday night. The surface low pattern
should evolve in a miller b type fashion, with gradual erosion of
the wedge layer and instability steadily uncovered from south to
north during the day Friday. This will make thunderstorms quite
possible, and severe weather not out of the question Friday as the
southerly low level jet ramps up.

Dry ridging will return over the southeast Saturday through Sunday.

Temperatures should run generally 5 to 10 degrees above climatology
in most areas over the weekend. Atlantic moisture return around the
high pressure, and associated with upslope flow, may bring some
clouds back into the picture Monday, and possibly light
rain/showers. Temperatures should thus be a bit cooler Monday
afternoon, with less diurnal range.

Aviation /12z Tuesday through Saturday/
At kclt: all of the better early morning convection has moved east
of the airfield at issuance time, with just lingering vcsh through
mid morning. MainlyVFR CIGS are being observed, but abundant low
level moisture remains in place ahead of the approaching surface
front and occasional MVFR CIGS look likely. The trailing surface
cold front will approach from the northwest for the afternoon hours.

Will time some tempo tsra along the front to mainly after 19z.

Surface winds will be southwesterly with possible low end gusts this
afternoon, turning wnw with FROPA during the evening hours and
slackening overnight.

Elsewhere: precipitation will be sparse the rest of the period as
drier air is working in aloft from the west. However, low levels
remain very moist and MVFR tempo ifr CIGS are likely through mid
morning before conditions return toVFR. Coverage along the
approaching boundary this afternoon should be less across the
mountain/foothill sites than at kclt. Southwest winds will be gusty
at times ahead of the front, turning northwest with FROPA later this
evening. Winds will remain NW at kavl throughout.

Outlook: drier conditions should briefly return Wednesday before
another storm system begins affecting the region Thursday through
Friday. Drier conditions will return again for the weekend.

Confidence table...

11-17z 17-23z 23-05z 05-06z
kclt high 94% high 94% high 100% high 100%
kgsp high 94% high 100% high 100% high 100%
kavl high 100% high 100% high 100% med 62%
khky high 87% high 100% high 100% high 100%
kgmu high 94% high 100% high 100% high 100%
kand high 94% med 61% 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 mi80 min ESE 2.9 G 4.1 61°F
LMFS1 - Lake Murray SC 80 mi90 min SSW 5.1 G 6 62°F 1014.6 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi58 minS 810.00 miMostly Cloudy62°F59°F90%1013.5 hPa
Concord Regional Airport, NC14 mi2 hrsN 010.00 miMostly Cloudy59°F57°F94%1015.2 hPa
Gastonia Municipal Airport, NC17 mi56 minSSW 510.00 miMostly Cloudy62°F57°F84%1013.3 hPa
Monroe, Monroe Airport, NC17 mi57 minSSW 610.00 miOvercast61°F57°F87%1014.4 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi56 minSSW 57.00 miPartly Cloudy60°F59°F96%1013.5 hPa

Wind History from CLT (wind in knots)
Last 24hrSW6SW6S9S9SW5S6
1 day agoS10S11S14S14S5SW8S8S6SE9S8SE8SE7S11S8SE7S13S14S6S5S5S3S4S5S7
2 days agoSW4W8SW10S7SW76

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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Greenville-Spartanburg, SC (9,2,3,4)
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Ground Weather Radar Station Greer, SC
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weather_mapweather_map weather_map

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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 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.