Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 6:37AM||Sunset 8:36PM||Thursday July 29, 2021 12:19 PM EDT (16:19 UTC)||Moonrise 11:13PM||Moonset 11:12AM||Illumination 72%|
7 Day Forecast for Marine Location Near Reed Creek, GAHourly EDIT Help
Area Discussion for - Greenville-Spartanburg, SC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS62 KGSP 291345 AFDGSP
Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 945 AM EDT Thu Jul 29 2021
SYNOPSIS. Hot and dry high pressure extends into the region through Friday allowing heat indices to climb near or into the low 100s outside the mountains. Friday a cold front will approach the area gradually sinking south across the Carolinas and northern Georgia throughout the day. This front is expected to track south of the forecast area Saturday before lifting north again into the area Sunday. This frontal boundary will keep shower and thunderstorm chances around. Early next week another cold front brings cooler weather along with more shower and thunderstorm chances.
NEAR TERM /THROUGH TONIGHT/. As of 940 am: No appreciable changes to thinking at this update. A subsident regime will persist over the forecast area through the near term in association with a ridge axis extending from large subtropical anticyclone centered over the Great Plains. A relatively dry boundary layer is yielding mostly patchy low clouds and fog in the mountain valleys and along some rivers and lakes this morning, which will burn off by around 9 am. More importantly, the drier air will produce profiles that are largely inhibited from deep convective development this afternoon. A stray storm developed over the GA/SC Blue Ridge yesterday afternoon, and this is entirely possible again, so small PoPs will be advertised along the southern escarpment this afternoon. Otherwise, PoPs will be 10% or less. The bigger story will be the heat, as forecast thickness values support an increase in max temps of a couple of degrees above yesterday's readings. However, with dewpoints expected to mix out into the 60s, the current forecast only has a smattering of Heat Advisory criteria (Heat Index 105 to 110) here and there along/south of I-85 . while most areas are forecast to remain in the 100-105 range. Current obs are in line with fcst values at this time; we can't yet confidently make any changes to T/Td/heat index. As such, will maintain hot weather highlight in the HWO and forego Heat Advisory. Warm and muggy conditions expected tonight, with min temps expected to average a couple of degrees above normal.
SHORT TERM /FRIDAY THROUGH SUNDAY NIGHT/. As of 300 AM EDT Thursday: The short term forecast period starts out hot and humid Friday as the southeastern periphery of the ridge out west extends into the southeastern US. A trough extending from Canada to the northeastern US will dig south across the eastern US throughout the rest of the short term period, forcing the ridge of high pressure to retreat west. Meanwhile at the sfc, a cold front should draped along the NC/VA state line early Friday morning. This FROPA is expected to gradually sink south across the Carolinas and northern Georgia throughout the day Friday. This front will allow shower and thunderstorm chances to return. Capped PoPs at a slight chance to chance across the forecast area as the font does not have a lot of moisture to work with Friday. Areas that do see showers and thunderstorms will much needed relief from the heat. Highs Friday should get back up into the low to mid 90s outside the mtns. Heat indices outside the mtns are expected to climb back near or into the low one hundreds. Highs across the mtns should range from the mid 80s to low 90s. Higher elevations will see slightly cooler highs.
The front is expected to remain south of the forecast area Saturday. This will lead to only a slight chance for isolated showers and thunderstorms. Saturday night into Sunday the cold front is expected to lift back north potentially tracking back into the southern tier of the CWA. Shortwaves are expected to ride along this frontal boundary Sunday increasing shower and thunderstorm chances. Since Sunday looks like the better day for shower and thunderstorm activity, have PoPs ranging from chance to likely. Temps Saturday and Sunday will be noticeably cooler compared to Friday, but should remain above normal. Another cold front approaches the CWA towards the end of the forecast period.
LONG TERM /MONDAY THROUGH WEDNESDAY/. As of 300 AM EDT Thursday: The pattern should remain fairly active throughout the extended forecast period. Troughing will amplify across the eastern CONUS while high pressure continues to dominate in the western CONUS. Early next week another cold front tracks into the western Carolinas and northeast Georgia and is expected to stall on Tuesday before tracking just south of the CWA middle of next week. This front will keep shower and thunderstorm chances around. Currently have PoPs ranging from a chance to likely Monday and Tuesday with only a slight chance to chance Wednesday and Thursday as the frontal boundary should be just to our south. This front will bring even cooler and below average high temps early to middle of next week.
AVIATION /14Z THURSDAY THROUGH MONDAY/. At KCLT and elsewhere: VFR is expected at all terminals through this forecast period. While some fog and/or low stratus is ongoing in the mountain valleys, and will likely redevelop tonight. This is unlikely to make it to KAVL during either time frame. The relatively dry air that is responsible for the largely VFR conditions is also expected to yield another afternoon/evening with very limited convective coverage, and no convective mention is warranted at any TAF site. Generally light/vrbl winds early this morning will give way to SW winds at 5-10 kts this afternoon.
Outlook: The dry pattern will continue through Thursday. A return to the usual summertime pattern is expected Friday through the weekend, with increasing shower and thunderstorm chances. Early morning fog and low stratus will once again be possible each morning.
Confidence Table .
13-19Z 19-01Z 01-07Z 07-12Z 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 99% 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 . None. SC . None.
SYNOPSIS . AP NEAR TERM . JDL/Wimberley SHORT TERM . AP LONG TERM . AP AVIATION . JDL
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
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 Temp||Water Temp||Waves||Pressure||DewPt|
|CHDS1 - Strom Thurmond Dam, SC||67 mi||59 min||N 2.9 G 4.1|
|LMFS1 - Lake Murray SC||87 mi||59 min||S 5.1 G 6||85°F|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Anderson, Anderson County Airport, SC||6 mi||23 min||SW 10||10.00 mi||Fair||89°F||74°F||61%||1017.2 hPa|
|Clemson, Clemson-Oconee County Airport, SC||13 mi||25 min||WSW 5||10.00 mi||Fair||86°F||74°F||67%||1017.6 hPa|
|Pickens County Airport, SC||22 mi||24 min||W 6||10.00 mi||Fair||88°F||72°F||59%||1018.6 hPa|
Link to 5 minute data for KAND
Wind History from AND (wind in knots)
|1 day ago||NW||S||SW||S||W||W||Calm||NE||E||N||NE||NW||Calm||Calm||NW||NW||N||Calm||Calm||E||Calm||Calm||Calm|
|2 days ago||S||SW||S||S||SE||Calm||S||E||E||Calm||N||W||Calm||Calm||Calm||Calm||Calm||N||N||N||N||Calm||Calm|
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