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 7:00AM||Sunset 7:50PM||Monday April 6, 2020 1:04 AM EDT (05:04 UTC)||Moonrise 5:20PM||Moonset 5:26AM||Illumination 97%|
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 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:
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 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||35 min||Calm G 1.9||58°F|
|LMFS1 - Lake Murray SC||80 mi||45 min||SSW 8.9 G 12||67°F||1017.9 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||73 min||S 5||10.00 mi||Mostly Cloudy||63°F||48°F||60%||1017.6 hPa|
|Concord Regional Airport, NC||14 mi||50 min||N 0||10.00 mi||Mostly Cloudy||61°F||50°F||68%||1019 hPa|
|Gastonia Municipal Airport, NC||17 mi||71 min||N 0||10.00 mi||Mostly Cloudy||61°F||54°F||78%||1017.6 hPa|
|Monroe, Monroe Airport, NC||17 mi||72 min||Var 4||10.00 mi||A Few Clouds||64°F||52°F||65%||1018.7 hPa|
|Rock Hill, Rock Hill - York County Airport, SC||20 mi||71 min||S 6||10.00 mi||Mostly Cloudy||66°F||46°F||50%||1017.4 hPa|
Link to 5 minute data for KCLT
Wind History from CLT (wind in knots)
|1 day ago||NW||NW||Calm||Calm||Calm||Calm||NW||NW||Calm||NE||N||N||NE||N||NE||Calm||NE||E||SE||S||SE||S||S||SE|
|2 days ago||Calm||N||NW||NW||N||N||NW||NW||N||NW||NW||W||W||N|
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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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Wind Forecast for Greenville-Spartanburg, SC (1,6,7,8)(on/off)  Help
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