Thursday, July2, 2020
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Marine Weather and Tides
Charlotte, NC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:11AMSunset 8:43PM Thursday July 2, 2020 6:07 PM EDT (22:07 UTC) Moonrise 5:25PMMoonset 2:53AM Illumination 92% 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 Charlotte, NC
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location: 35.21, -80.83     debug


Area Discussion for - Greenville-Spartanburg, SC
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FXUS62 KGSP 021859 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 259 PM EDT Thu Jul 2 2020

SYNOPSIS. A stalled frontal boundary will remain south of the area to allow for drier air to filter in through Independence Day. Any activity that does develop will mainly stay confined to the higher elevations. Temperatures are expected to hover slightly above climo for the holiday weekend. Deeper moisture returns Sunday and into the first half of next week to help increase rain chances.

NEAR TERM /THROUGH FRIDAY/. As of 234 pm EDT: Still quiet across the area right now. Some enhanced cu over the higher terrain in wrn SC/ne GA/sw NC, but nothing on radar yet. A few showers also to our east. Fcst looks like it is in good shape, with isolated showers or maybe a thunderstorm over the higher terrain through late afternoon.

Not much change to earlier thinking with regard to the weather features over the next 24 hours. We'll remain in the light northerly flow between the old upper low off the East Coast and the upper ridge/anticyclone to the west, with sfc high pressure ridging in from the north. A complete lack of mid/upper forcing thru Friday means no support for deep convection other than thermodynamics. A capping inversion east of the mountains will strongly inhibit convection in that area, but we should have enough differential heating to allow for convection on the ridgetops during peak heating Friday afternoon. Temps will remain slightly above normal.

SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/. As of 215 PM EDT Thursday: With gradually deamplifying upper ridge over the central US and upper trough on either side, latest guidance continues to prog a nearly stationary weak front well south of the area for the weekend. Despite limited available low level moisture, the mid to upper levels look to remain fairly dry. This combined with limited instability, have kept the potential for isolated showers and thunderstorms confined to the mountains, though not to say a rouge shower or thunderstorm couldn't develop over the Upstate or NW Piedmont. Primary threat with any thunderstorm will be gusty winds. Overall, PoPs and QPF remain fairly low for Saturday. Max temps for Independence Day will be a few degrees above normal in the lower 90s, cooler across the mountains. Min temps will bottom out around normal as well.

On Sunday, upper ridge will continue to deamplify as it slowly shifts eastward while upper troughing remains over the eastern seaboard. Meanwhile at the sfc, low pressure develops along the boundary, stretched across the Gulf states, as it slowly lifts northward. With increasing available moisture as SW flow returns and limited instability, PoPs increase for Sunday afternoon with isolated to scattered showers and thunderstorms possible. Again, higher PoPs remain confined to the mountains with overall low QPF. Max temps will climb to normal.

LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/. As of 250 PM EDT Thursday: Despite guidance being not entirely in agreement, overall anticipate an unsettled weather pattern for the extended forecast period as the aforementioned warm front continues to lift northward and sfc low pressure nears the area, along with increasing moisture and available instability. Though will note, the placement of this sfc low remains uncertain at this time given model discrepancy - further inland vs. coastal. Weak upper ridge will continue to shift eastward and eventually move offshore by the mid part of the week, only to be replaced by a very broad ridge/trough pattern. Thus, diurnally driven showers and thunderstorms will be possible each day. QPF will remain low for the early portions of the week, with increasing moisture and higher PWATs into the middle part of the week. Max temps will remain around normal if not a few degrees below with min temps around normal.

AVIATION /19Z THURSDAY THROUGH TUESDAY/. At KCLT and elsewhere: Shower activity should be confined to the higher terrain this afternoon, otherwise just few/sct high based cu. Wind will be N to NE through sunset. Light/variable wind and sct cirrus overnight as high pressure ridges down from the north. At issue will be fog in the mtn valleys. Latest guidance is that we will dry out enough that it will not develop. More of the same for Friday, with wind coming back light from the north by late morning and a few cu developing by midday.

Outlook: A more typical diurnal pattern of mainly mountain shower and thunderstorm chances will be in place through the weekend and into early next week. There will be some potential for low clouds and fog around daybreak each morning, especially in the mtn valleys and also in areas under heavy downpours each afternoon. Otherwise, expect VFR conditions.

Confidence Table .

19-01Z 01-07Z 07-13Z 13-18Z KCLT High 100% High 100% High 100% High 100% KGSP High 100% High 100% High 100% High 100% KAVL High 100% High 100% High 99% High 97% 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 are available at the following link:

www.weather.gov/gsp/aviation

GSP WATCHES/WARNINGS/ADVISORIES. GA . None. NC . None. SC . None.

SYNOPSIS . CAC NEAR TERM . PM SHORT TERM . 12 LONG TERM . 12 AVIATION . PM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 61 mi38 min N 2.9 G 7 93°F
LMFS1 - Lake Murray SC 80 mi48 min NNW 1.9 G 5.1 91°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi76 minNNE 910.00 miA Few Clouds90°F64°F44%1012.1 hPa
Concord Regional Airport, NC14 mi73 minNE 610.00 miPartly Cloudy90°F64°F43%1013.9 hPa
Gastonia Municipal Airport, NC17 mi74 minNNE 710.00 miFair91°F64°F42%1012.2 hPa
Monroe, Monroe Airport, NC17 mi75 minNE 1110.00 miA Few Clouds90°F69°F50%1012.1 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi74 minVar 510.00 miMostly Cloudy90°F70°F52%1011.5 hPa

Link to 5 minute data for KCLT

Wind History from CLT (wind in knots)
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Last 24hrCalmS4W3SW3W3W3CalmCalmN4NW4N4N6N7N7N9N9NE8NE7N8NE6N7N9NE9N7
1 day agoN7CalmCalmN3NW3CalmCalmS4NW4CalmNW3W4NW4N4N3CalmCalmE334SW7NE6NW6NW5
2 days agoNW22
G30
N833CalmCalmCalmN4CalmNE3NW4NW4NW4W3N4NW44N6NW4Calm4NW3NW4NW4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS 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 (18,4,5,8)
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Ground Weather Radar Station Greer, SC
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Disclaimer:
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 numerous 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.