Sunday, December15, 2019
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Marine Weather and Tides
Charlotte, NC

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:23AMSunset 5:13PM Sunday December 15, 2019 10:54 AM EST (15:54 UTC) Moonrise 8:52PMMoonset 10:29AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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 151521 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 1021 AM EST Sun Dec 15 2019

SYNOPSIS. Dry high pressure will remain over the region, before a moist cold front crosses the area from the west late Monday into Tuesday. Cooler Canadian high pressure will build in Wednesday and persist through the end of the work week.

NEAR TERM /THROUGH TONIGHT/. As of 1000 AM: Still some lingering stratus banked up against portions of the NC mountains within westerly flow, but are slowly dissipating. Otherwise, just a few altocu streaming by, so expect mostly sunny skies today. Modest high pressure building over the area today will result in highs about 5 degrees above normal, with weakening winds in the mountains, and light wind elsewhere.

Heights rise aloft tonight as a weak ridge builds off the Atlantic coast and a trough develops over the MS River valley. Surface high pressure moves offshore overnight as a warm front develops over the TN River valley. An increasingly moist, southwesterly low level flow develops this evening bringing increasing low level clouds across the area. The moisture is shallow and the isentropic lift weak; however, there may be enough mechanical, upslope lift for some patchy rain to develop across the southwestern mountains and along the Blue Ridge escarpment of the NC/SC/GA borders. While southwesterly winds will increase across the area, they will remain generally light for all but the highest ridges west of the French Broad valley, as usual for a southerly, warm advection pattern. Gusts should remain below advisory levels for all but possibly the highest ridges of the Smokies. Lows will be around 10 degrees above normal.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. As of 145 AM EST Sunday: An active weather pattern is still in the works over the short term period. Good agreement is had in the latest model runs with a broad h5 trof deepening across the Midwest . while a wavy frontal system sets up over the TN/OH valleys by 12z Mon. Due to the positive alignment of the upper trof . the stronger deep forcing will remain west and north of the FA as the sfc front crosses the area thru Tue evening. Cross sections show elevated omega ahead of the fropa . which is a notable weakening trend from previous guidance. There looks to be a low-end elevated CAPE potential on Tue just ahead of the llvl convg zone . while deep shear remains high and hodos become right-turning. So . organized QLCS lines are not out of the question by mid-morning into the afternoon mainly along and south of the I85 corridor.

The SW NC mtns will see the brunt of the rainfall where localized areas could receive up to 2 inches Mon night . which may lead to minor hydro issues along small streams and low-lying areas. Winds still look to be moderately strong over the mtns abv 3500 ft as a 50 kt h85 jet develops aft midnight. A wind adv may be needed for these areas as widespread damaging winds are not expected to warrant a high wind warning attm. This windy scenario will continue to be monitored over the next few shifts Behind the front. upslope NW flow -snsh will develop across the NC mtns . however with shallow and waning moisture . accums will be low end-end and likely below adv level.

With continued sw/ly flow ahead of the front and w/ly downslope winds post frontal . max temps will reach the m60s each afternoon over the non/mtns. The mtn valleys will be warm Mon with readings reaching the l60s Mon and still abv normal yet cooler in the m50s on Tue. Warm sector cloudiness and llvl mixing will help hold mins abt 20 degrees abv normal Mon night . then a 20 degree drop to normal levels Tue night as a cP airmass mixes into the FA.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. As of 230 AM EST Sunday: Upper level heights begin to rise as a ridge axis develops west of the fcst area Wed. A stg subs zone will encompass the region beginning Wed afternoon . which will allow a 1028 mb sfc high to transit the se/rn states into Fri. This setup will return clearing skies and cooler max/min temps . altho near or just below normal levels each day By Fri night. a developing h5 trof will dig across the ern CONUS which will be a weather maker for the FA into the weekend. Much uncertainty exists during this time frame as the GFS and ECMWF models are at odds with the details of the trof config. The GFS is developing a closed low within the trof and diving it across GA/SC and off the Atl coast thru Sat . while the ECMWF keeps a faster non/closed trof axis crossing the area with limited coastal sfc low development. The GFS scenario would bring a decent amt of wintry precip to the FA as colder air would have more time to be advected south as the low deepens off the coast. The latest ECMWF on the other hand keeps the better moisture axis over the ern zones with a limited freezing sfc-layer potential. Its interesting that the 00z ECMWF has trended more inline with the colder and moister GFS soln . however this system will be monitored over the upcoming week and much can change with the sensible weather fcst So for now. have a low-end chance sn or -ra/sn mix over the northern zones Fri night with limited/nil snow accums.

AVIATION /16Z SUNDAY THROUGH THURSDAY/. At KCLT and Elsewhere: VFR at all TAF sites into the evening. Low VFR clouds across the mountains, and some valley fog, will dissipate this morning leaving increasing and thickening cirrus across the area through the afternoon. Generally SW wind continue through the day, WNW at KAVL. Mid and low VFR clouds will move in from the west and/or develop over the area this evening as a moist south to SW low level flow develops. Winds turn S to SW, even at KAVL, overnight as well. With relatively strong winds developing at ridge top level, LLWS is likely to develop at KAVL. MVFR cigs and vsby develops at KHKY, KAVL, and KAND by morning. Low VFR at KGSP/KGMU. Low VFR holds off until after daybreak at KCLT.

Outlook: Moisture increases across the area ahead of the next cold front, which will cross the region Monday night into Tuesday. The front will bring a round of rain showers, with cig/vis restrictions likely. Drier air and stronger high pressure will set up by midweek.

Confidence Table .

15-21Z 21-03Z 03-09Z 09-12Z KCLT High 100% High 100% High 100% High 98% KGSP High 100% High 100% High 85% Med 78% KAVL High 100% High 100% High 93% High 86% KHKY High 100% High 100% High 95% Med 64% KGMU High 100% High 100% High 86% Med 77% KAND High 100% High 100% High 86% High 81%

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:

www.weather.gov/gsp/aviation

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

SYNOPSIS . SBK NEAR TERM . ARK/RWH SHORT TERM . SBK LONG TERM . SBK AVIATION . RWH


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 61 mi84 min SE 1.9 G 2.9 41°F
LMFS1 - Lake Murray SC 80 mi34 min SW 7 G 11 50°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi62 minW 410.00 miA Few Clouds46°F37°F71%1019.4 hPa
Concord Regional Airport, NC14 mi64 minW 410.00 miFair48°F39°F71%1020 hPa
Gastonia Municipal Airport, NC17 mi60 minN 010.00 miFair48°F37°F68%1019.4 hPa
Monroe, Monroe Airport, NC17 mi61 minWSW 510.00 miFair45°F39°F80%1020.6 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi60 minW 510.00 miFair47°F37°F71%1020 hPa

Link to 5 minute data for KCLT

Wind History from CLT (wind in knots)
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Last 24hrW6W6SW8W12
G19
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NW9NW5NW5NW3W5W5SW3W5CalmCalmCalmS4S3W3SW3W3W4
1 day agoN9NE8N9N4N5N5N8N7NE8N6N6NW6N6N8NE7W4CalmE33CalmS3S6SW8SW6
2 days agoNE8NE11
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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    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Greenville-Spartanburg, SC (10,2,3,4)
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Ground Weather Radar Station Greer, 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 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.