Marine Weather and Tides
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 7:24AM||Sunset 5:47PM||Monday January 27, 2020 7:53 PM EST (00:53 UTC)||Moonrise 9:19AM||Moonset 8:28PM||Illumination 9%|
7 Day Forecast for Marine Location Near Charlotte, NCHourly EDIT Help
Area Discussion for - Greenville-Spartanburg, SC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS62 KGSP 272345 AFDGSP
Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 645 PM EST Mon Jan 27 2020
SYNOPSIS. Expect dry conditions Tuesday, followed by another weak low pressure area moving by to our south late Wednesday and Wednesday night, with another chance for precipitation. Brief drying occurs again Thursday. Expecting another low pressure to cross our region late Friday through Saturday.
NEAR TERM /THROUGH TUESDAY/. As of 640 PM: The passing, channeled upper vorticy lobe is now driving showers mainly east of the mountains, with residual forcing over the southern Appalachians beginning to trend back toward more classical northwest upslope flow. As such, accumulations should be done in the region from Macon to Transylvania Counties and any other places east of the Blue Ridge escarpment. The warning has thus been pared back one tier toward the TN border. An SPS could be needed overnight to address freezing conditions in locations where precipitation fell today, but we'll assess the disposition of the existing Winter Weather Advisory first.
Otherwise, clearing skies for much of the area, and winds dropping off somewhat, will allow lows to fall into the 20s to near 30 in the mountains and 30s east of the mountains.
By Tuesday the rain/snow producer will be pushing off the East Coast, making way for flat ridging and mostly sunny skies, including near the Tennessee border by the afternoon. Seasonable temperatures are expected across the mountains (generally 40s to near 50) to just above normal to the east of the mountains (50s).
SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/. As of 130 PM Mon: Weak, seasonal high pressure will be over the area Tuesday night as a low pressure system moves west along the Gulf Coast. The guidance is now in better agreement with this system showing more consolidated short wave energy crossing the area Wednesday night. There is deep moisture moving in with this system but H85 flow remains weak. There is some synoptic forcing but it is weak as well with little upper divergence and only weak isentropic lift. The surface low remains along the Gulf Coast and moves relatively quickly. Have followed a guidance blend and bring low chance PoP to along and west of the I-26 corridor by late Wed afternoon, good chance PoP across the area Wed night, then slight chance PoP for the NC mountains into the I-40 corridor Thursday morning. Precip tapers off quickly during late morning into the afternoon. Forecast soundings and thickness values show another elevation dependent rain/snow mix with no significant warm nose. QPF will be light and any snowfall would be light as well with accumulations generally limited to elevations above 3500 feet. Can't rule out some flakes mixing in outside of the mountains, especially across the I-40 corridor Wednesday night, but chance of any accumulations there is very low. Amounts are still uncertain, but another high elevation advisory will be possible.
Lows a few degrees above normal Tuesday night rise a couple of degrees Wednesday night, also limiting snow potential. Highs a few degrees below normal Wednesday fall a few degrees for Thursday.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. As of 250 PM Mon: Guidance remains in disagreement on the evolution of the weekend weather system. A short wave ridge moves over the area Friday then a weak short wave trough moves over Friday night. The GFS then shows phased northern and southern stream short waves moving toward the area Saturday and across the area Saturday night. The ECMWF does split some weak southern stream energy off of a developing closed low and phases it with a northern stream short wave during the same time frame. However, the ECMWF is weaker significantly weaker overall. NW flow develops on Sunday with short waves remaining north of the area with an upper ridge moving in on Monday. The GFS and ECMWF develop a Miller A low in the Gulf then move it across FL into the Atlantic. While the low positions are similar, the GFS is much stronger and wetter over our area then the ECMWF which keeps the bulk of the precipitation to our south and east. The GFS is significantly colder and has much more in the way of NW flow precip behind this system than the ECMWF. The GFS would also indicate the potential for enough instability outside of the mountains for the the precip to break containment and spread across the foothills, piedmont, and eastern Upstate. Given these differences have gone with a guidance blend but trended toward the drier side of that. Have low end chance PoP across the area Friday night and Saturday with some low end NW flow PoP for Saturday night and Sunday. Forecast soundings and thickness values suggest another elevation dependent rain/snow forecast with little in the way of a warm nose. Of course, the GFS would suggest a more significant snowfall potential even outside of the mountains while the ECWMF suggests just rain outside of the mountains and a light NW flow event.
Temps rise to near normal for Friday and Saturday with above normal temps expected for Sunday and Monday using a guidance blend. Of course, the GFS suggests temps could be colder if it verified.
AVIATION /00Z TUESDAY THROUGH SATURDAY/. At KCLT and Elsewhere: Forcing from the passing upper vorticity lobe will drive vicinity showers mainly around KCLT for a few hours this evening before moving east. Otherwise, anticipate mainly VFR cigs, scattering after midnight. Northwest winds should be less than 10 kt east of the mountains, but occasionally gusty at KAVL this evening. Once the northwest flow moisture dries up west of KAVL overnight, expect only FEW to SCT cirrus around the region through most of Tuesday, with surface winds gradually adjusting back toward WSW by mid afternoon.
Outlook: Anticipate a return to solid VFR conditions through Tuesday. The next weak disturbance may bring brief precipitation and associated restrictions on Wednesday, with brief clearing again by Thursday. Another system is expected by this weekend.
Confidence Table .
23-05Z 05-11Z 11-17Z 17-18Z KCLT High 100% High 100% High 100% High 100% KGSP High 100% High 100% High 100% High 100% KAVL High 90% High 100% Med 63% 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:
GSP WATCHES/WARNINGS/ADVISORIES. GA . None. NC . Winter Weather Advisory above 3500 feet until 7 AM EST Tuesday for NCZ033-048>053-058-059. SC . None.
SYNOPSIS . DEO NEAR TERM . HG/65 SHORT TERM . RWH LONG TERM . RWH AVIATION . HG/65
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|WATS1 - Lake Wateree, SC||61 mi||84 min||N 2.9 G 6||50°F|
|LMFS1 - Lake Murray SC||80 mi||34 min||W 9.9 G 13||54°F||1010.8 hPa|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Charlotte, Charlotte / Douglas International Airport, NC||6 mi||62 min||N 0||10.00 mi||Partly Cloudy||46°F||41°F||83%||1011.3 hPa|
|Concord Regional Airport, NC||14 mi||64 min||N 0||10.00 mi||Mostly Cloudy||46°F||44°F||93%||1011.8 hPa|
|Gastonia Municipal Airport, NC||17 mi||60 min||N 0||10.00 mi||Mostly Cloudy||48°F||39°F||74%||1011.2 hPa|
|Monroe, Monroe Airport, NC||17 mi||61 min||WSW 3||10.00 mi||Overcast||45°F||41°F||86%||1012.5 hPa|
|Rock Hill, Rock Hill - York County Airport, SC||20 mi||60 min||N 0||10.00 mi||A Few Clouds||43°F||39°F||89%||1011.6 hPa|
Link to 5 minute data for KCLT
Wind History from CLT (wind in knots)
|1 day ago||N||N||N||NW||W||W||Calm||NW||Calm||Calm||Calm||Calm||N||NW||NW||NW||NW||N||W||W||W||W||Calm||Calm|
|2 days ago||Calm||SW||S||S||SW||W||W||W||W||SW||W||W||Calm||W||SW||Calm||W||W||W||NW||W||W||W||W |
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Wind Forecast for Greenville-Spartanburg, SC (19,4,5,8)(on/off)  Help
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