Tuesday, May11, 2021
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Marine Weather and Tides
Charlotte, NC

Version 3.4
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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:20AMSunset 8:18PM Tuesday May 11, 2021 6:46 AM EDT (10:46 UTC) Moonrise 5:24AMMoonset 7:21PM Illumination 0% Phase: New Moon; Moon at 29 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 110658 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 258 AM EDT Tue May 11 2021

SYNOPSIS. A moist stationary front will remain south of the area and maintain rain chances over the next couple days. Dry and cool high pressure builds in from the north Wednesday and slowly warms through the weekend.

NEAR TERM /THROUGH TONIGHT/. As of 250 am EDT: A passing cold front is settling just south of the forecast area early this morning. Brief and intermittent upglide over the front through daybreak could yield some spotty showers across the region, especially along and near the Blue Ridge mountains. A scattered stratocumulus field will then persist through the day, but with high clouds filling in overhead as an upper jet axis wraps north of the region. In addition, a reinforcing cold front will move southeast through the Ohio Valley today but remain north of the area through sunset. The clouds and mainly northeasterly flow will keep temperatures below climo this afternoon, with any residual afternoon scattered shower chances mainly along the southern escarpment of the mountains.

The approaching cold front will settle into the region tonight. This modest frontal zone forcing will be accompanied by increasing right entrance region divergence from the jetlet aloft. Moisture will also increase from the west as a low-level wave rides east along the front into the forecat area and produces upglide. These features should come together to yield numerous to categorical showers for the overnight hours, with the best coverage and heaviest rainfall in the southern tier 06Z to 12Z. Little to no surface-based instability is evident, but a few southern tier rumbles of thunder cannot be completely ruled out given steeper lapse rates aloft. The heaviest rainfall, perhaps a half to three-quarters of an inch, will affect locations from Elberton to Greenwood through daybreak Wednesday. Temperatures tonight will lock in quickly in the 40s across western NC and lower 50s in NE GA and Upstate SC.

SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/. As of 105 AM EDT Tuesday . Upper level energy embedded in zonal flow continues to advance east to begin the period and a sfc wave along a stationary front pushes offshore. This will wane precip activity thru the day with the better chances confined across the srn half of the FA. Not anticipating much additional rainfall, generally arnd a half inch or less. Instability will be nil as a new cP airmass pushes in and have maintained shower mention throughout the day. This new airmass will bring sigfnt CAA for this time of year and lower max temps Wed quite a bit. Still looking like highs will struggle to reach 60 F outside the mtns and a couple degrees cooler across the mtn valleys. Mins will also be well below normal and the higher mtn peaks may see frost formation arnd daybreak Thu. The pattern looks to remain rather dry Thu thru the period as PWATS drop to arnd 0.75 inches. So with broad negative forcing and negligible llvl moist adv, have lowered the going PoPs quite a bit leaving mainly slight chance -shra, which still may be too high.

LONG TERM /FRIDAY THROUGH MONDAY/. As of 135 AM EDT Tuesday . The ext range pattern looks to remain quite dry with a slow warming trend. The upper pattern will begin zonal with height rises beginning Fri night and continuing thru the weekend. There could be some nuisance showers across the NC mtns/fthills Fri night as a upper trof swings across the mid/Atl and Carolinas. This trof will have limited moisture to work with, so any rainfall would be very light. By Sun, an upper level ridge will cross the area and heights begin to lower and become difl ahead of a h5 s/w trof crossing the Midwest on Mon. Thus, expect a dry weekend with a return of low QPF NC mtn showers possible by Mon afternoon. As a llvl return flow develops, max temps will slowly rise thru the period and return to normal levels either Sun or Mon. Mins will also follow this same general warming trend.

AVIATION /07Z TUESDAY THROUGH SATURDAY/. At KCLT and elsewhere: Anticipate mainly VFR cigs through the period as a frontal zone settles south of the region today while another reinforcing cold front approaches from the north. Steady NE flow early will become variable to southwesterly through the afternoon hours, before turning back to northeasterly tonight with the arrival of the reinforcing front. KAVL will be the main exception, with steady NW flow through the period. A few low end gusts will be briefly possible as mixing starts. Deeper moisture arrives tonight and cigs will lower as the precipitation spreads in from the west. Will keep lower end VFR for this cycle, but MVFR or worse is possible closer to daybreak on Wednesday.

Outlook: With a stalled frontal zone near or just south of the area, periodic low cigs/vsbys and SHRA are expected to continue Wednesday and possibly into Thursday. This should be followed by gradual drying late in the week and into the weekend.

Confidence Table .

07-13Z 13-19Z 19-01Z 01-06Z KCLT High 95% High 100% High 100% High 100% KGSP High 98% High 99% High 100% High 100% KAVL High 85% High 93% High 96% High 100% KHKY High 99% High 100% High 100% High 100% KGMU High 100% High 98% High 100% High 100% KAND High 100% High 97% 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 . SBK NEAR TERM . HG SHORT TERM . SBK LONG TERM . SBK AVIATION . HG


Weather Reporting Stations
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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 61 mi76 min NNE 1 G 4.1 63°F 1016.6 hPa
LMFS1 - Lake Murray SC 80 mi26 min NW 1 G 4.1 62°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charlotte, Charlotte / Douglas International Airport, NC6 mi54 minNE 510.00 miPartly Cloudy59°F49°F69%1017.6 hPa
Concord Regional Airport, NC14 mi51 minN 410.00 miOvercast55°F48°F77%1019.3 hPa
Gastonia Municipal Airport, NC17 mi52 minNNE 710.00 miMostly Cloudy59°F49°F69%1017.8 hPa
Monroe, Monroe Airport, NC17 mi53 minNNE 710.00 miOvercast58°F52°F81%1018.2 hPa
Rock Hill, Rock Hill - York County Airport, SC20 mi52 minNNE 410.00 miA Few Clouds60°F49°F67%1017.1 hPa

Link to 5 minute data for KCLT

Wind History from CLT (wind in knots)
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Last 24hrNW4SW7SW6W8W4SW6SW12W76SW8SW9SW9SW7SW5SW6SW3N15N9NE6NE9NE13N8N6NE5
1 day agoSE4E5SE6SE45SW9SW10SW14
G23
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S10S11S8SW5NW7SE4CalmCalmNW3S6W7SW10
2 days agoW4W5W5W6W9
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W4CalmCalmCalmCalmCalmS4N3E7E6SE6

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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