Monday, April6, 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 7:00AMSunset 7:50PM Monday April 6, 2020 1:04 AM EDT (05:04 UTC) Moonrise 5:20PMMoonset 5:26AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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 060223 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 1023 PM EDT Sun Apr 5 2020

SYNOPSIS. A weak stationary front over our region will lift north as a warm front through Tuesday. A stronger cold front will cross our area from the northwest on Thursday, with cooler high pressure spreading over the region through next weekend.

NEAR TERM /THROUGH MONDAY/. As of 1025 PM: A few clusters of showers have finally managed to escape east from the mountains late this evening and have established weak cold pools to propagate ESE through the Piedmont through midnight. Surface-based instability is quite limited, but the weakly established outflow will likely generate isolated to scattered showers across the southeast fringe for the next few hours, especially as they encounter a remnant seabreeze boundary moving west into the Piedmont. Will remove the thunder mention at this point, but the showers could yield some locally heavy rainfall and briefly gusty winds of 20 to 30 mph before dissipating shortly after midnight. Some fog could form in areas that are affected by showers, but the best chance overnight should be in the mountain river valleys, particularly in the southwest mountains. Mins will run some 5 to 10 degrees above climo overnight.

The slowing frontal boundary should settle just into, or north of, the area overnight as the incoming sfc high drifts toward the East Coast. Aided by rising heights aloft, Monday temps will be somewhat warmer than today, and mid-level WAA appears to occur over the sfc high. The combination of this WAA and the old cold front will amount to a weak frontal zone extending from the Ohio Valley to the Mid- Atlantic coast, which again looks likely to aid in convective development. As such, isolated to widely scattered diurnal showers/storms are in the fcst again Monday, with 0-6 km shear of around 30-35 kt perhaps allowing longer-lived/multicell clusters, but probably not producing any severe wx. Max temps should be in the lower 80s over much of the Piedmont.

SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/. As of 215 PM EDT Sunday: A broad 500 mb ridge with its axis over the MS Valley will begin to flatten further toward the end of the short term, as a trough digs into the Great Lakes. This will effectively produce a deep-layer WNWLY flow atop the forecast area for Tuesday and Wednesday. This flow will remain rather moisture-deprived, and the latest guidance does seem to be trending drier for this period. There still looks to be a brief period of some deeper moisture with low-lvl upglide on Tuesday, with a chc for showers (and possibly an embedded tstm or two), with highest PoPs west. That brief wave quickly exits east by Tuesday night, with PoPs becoming confined to the westerly upslope areas of the TN/NC border for Wednesday. The bigger story will probably be the warm temps. Highs in the Piedmont will be generally in the upper 70s Tuesday and mid 80s Wednesday. The Greer climate site has a decent shot of tying or breaking the record on Wednesday (but AVL and CLT have higher records that likely won't be broken). See climate section below.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. As of 245 PM EDT Sunday: There is still above average uncertainty in the medium range forecast, as guidance continues to disagree on when a large closed low over California drifts east and gets picked up by the prevailing westerlies. Like the last couple of forecast cycles, the 12z ECMWF continues to be the middle of the model spread, while the GFS and UKMET continue to be on the fast/slow ends, respectively. The ECMWF is still not a perfect compromise, however, as it has a strong wave remain intact eject across the Deep South and bring a really wet storm system across our region next weekend. Given the uncertainty, I tried to stay close to an NBM/WPC guidance. PoPs are likely overdone for much of the medium range, but slgt chc to low-end PoPs spread out over the Fri-Sun period seemed to be the best we could do for now. Temps will be about 10-15 deg above normal again Thursday, but then cool to near or slightly below normal Friday thru Sunday, as a cold front pushes thru Thursday and cool high pressure builds in under the digging Great Lakes upper trough.

AVIATION /03Z MONDAY THROUGH FRIDAY/. At KCLT and Elsewhere: Showers that finally moved east off the Blue Ridge escarpment late this evening have impacted TAF sites from KCLT to KGSP to KGMU, but the impacts will be short-lived, with thunder now very unlikely. Expect VFR conditions through the period, with any fog/stratus likely confined to mainly the southwest mountain river valleys and locations that received heavy showers. Instability does appear better for Monday afternoon, and a PROB30 for TSRA/SHRA will be featured at most sites for the afternoon hours. Anticipate mainly light SW winds through the period, except becoming NW at KAVL. Some gusts with mixing are likely through the day on Monday.

Outlook: Flight restrictions may return on Tuesday as moisture increases ahead of a weak front. Conditions could remain unsettled through late week with another, stronger front approaching from the northwest Thursday.

Confidence Table .

02-08Z 08-14Z 14-20Z 20-00Z 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 are available at the following link:

www.weather.gov/gsp/aviation

CLIMATE. RECORDS FOR 04-08

MAX TEMPERATURE MIN TEMPERATURE STATION HIGH LOW HIGH LOW ------- ---------- ---------- ---------- ---------- KAVL 89 1893 41 1982 62 1908 22 2007 KCLT 88 1929 44 1938 64 1882 21 2007 KGSP 85 2015 40 1907 63 2001 24 2007 2001

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

SYNOPSIS . DEO NEAR TERM . HG/08 SHORT TERM . ARK LONG TERM . ARK AVIATION . HG/08 CLIMATE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 61 mi35 min Calm G 1.9 58°F
LMFS1 - Lake Murray SC 80 mi45 min SSW 8.9 G 12 67°F 1017.9 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi73 minS 510.00 miMostly Cloudy63°F48°F60%1017.6 hPa
Concord Regional Airport, NC14 mi50 minN 010.00 miMostly Cloudy61°F50°F68%1019 hPa
Gastonia Municipal Airport, NC17 mi71 minN 010.00 miMostly Cloudy61°F54°F78%1017.6 hPa
Monroe, Monroe Airport, NC17 mi72 minVar 410.00 miA Few Clouds64°F52°F65%1018.7 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi71 minS 610.00 miMostly Cloudy66°F46°F50%1017.4 hPa

Link to 5 minute data for KCLT

Wind History from CLT (wind in knots)
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Last 24hrS5SE4E4E6E8E9SE8SE6S5SE3SE5CalmSW5S6SW6SW9S7S8S3S4S3CalmS5S7
1 day agoNW5NW4CalmCalmCalmCalmNW3NW3CalmNE6N10N9NE9N7NE9CalmNE7E5SE5S6SE6S4S4SE6
2 days agoCalmN4NW4NW5N4N4NW3NW5N7NW6NW5W9W8N11
G16
NW5NW10NW6NW7NW5W4NW3W3CalmNW3

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 (1,6,7,8)
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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.