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 6:41AM||Sunset 8:31PM||Tuesday August 4, 2020 10:01 AM EDT (14:01 UTC)||Moonrise 8:37PM||Moonset 6:29AM||Illumination 100%|
7 Day Forecast for Marine Location Near Dillard, GAHourly EDIT Help
Area Discussion for - Greenville-Spartanburg, SC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS62 KGSP 041106 AFDGSP
Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 706 AM EDT Tue Aug 4 2020
SYNOPSIS. Now that Tropical Cyclone Isaias is moving away from our area, a more typical summertime pattern of afternoon and evening thunderstorms can be expected to return today and persist for the remainder of the week.
NEAR TERM /THROUGH TONIGHT/. As of 650 AM: Low stratus is present across a good portion of the area, mainly along rivers and across the lower Piedmont where the heaviest rain fell late Monday. The mtn valley clouds appear thicker than usual, so they may take a full 2 hours to erode; the Piedmont stratus is likely to break up sooner. Beneath the Piedmont stratus, vsby readings have really crashed in the last 30-60 min, so we will fire off a quick SPS to mention the brief dense fog before the sun has an impact.
Today likely will prove to be a comparatively mundane day, weather-wise, although destabilization should occur as usual this time of year. A convergence zone along and just east of the Escarpment makes initiation most likely there, and westerly shear associated with the faster flow around the MS Valley trough will enhance storm motion eastward toward the NW NC Piedmont. Though convection may be hindered by weak lapse rates just above the CCL, still looks to warrant chance-range PoPs in those areas. Revised PoPs with this update reflect more of the CAM consensus, which allowed us to go dry over more of the southern CWA, away from the terrain influence. Though profiles are fairly dry, it looks like a case where the shear is too strong for pulse storms but not strong enough to maintain organization, which means the overall severe risk is relatively low. A few near-severe gusts certainly could occur from the stronger clusters, however. Max temps near normal; no heat index issues expected.
The axis of the trough will make slight eastward progress, but remain just west of the CWA tonight. This could result in isolated development of new storms well past the diurnal peak, so PoP is slow to diminish. Seeing some signals for mountain valley fog to return, and possibly where the soils are still soaked too. Mins near normal.
SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/. As of 230 am EDT Tuesday: An amplified flow pattern will be in place across the CONUS on Wednesday, with broad ridging over the southwestern U.S., and a persistent trough over the eastern two- thirds of the nation. Fairly moist profiles will continue over the southeast with light southwesterly flow in place. A decaying boundary should provide enough focus, combined with diurnal instability, to lead to above climo PoPs during the afternoon and evening hours.
The eastern trough will deamplify slightly on Thursday. However, moisture will persist in profiles with another round of robust diurnal convection expected. Weak lapse rates on both days suggest that instability will be modest enough to permit mainly garden variety thunderstorms through the period. The NAM features quite a bit higher SBCAPE, but some dewpoint mixing should nudge instability back toward the less unstable GFS both days. Temperatures will be near climo through the period.
LONG TERM /FRIDAY THROUGH MONDAY/. As of 240 am EDT Tuesday: Additional mid-level shortwaves will round the eastern trough on Friday, leading to another day of scattered to numerous diurnal thunderstorms with near climo temperatures.
The upper flow pattern will then flatten out a bit over the weekend. The modest height rises will lead to warmer temperatures over the southeast, with typical scattered summertime convection each day. Very modest mid-level lapse rates should permit storms to remain mostly garden variety with somewhat limited severe potential. The weak upper ridge over the east will persist into Monday, but with a northern tier uptick in convective coverage as forcing from shortwaves improves in the WNW flow aloft. Temperatures should recover to a few degrees above climo by the end of the period on Monday.
AVIATION /11Z TUESDAY THROUGH SATURDAY/. At KCLT and Elsewhere: IFR to LIFR stratus is filling the mountain valleys at issuance time, affecting KAVL until 13-14z, possibly even a little later based on the extent/appearance of the stratus on satellite. More ragged decks are seen very close to the other sites, so TEMPOs have been used liberally in the first hour of the period, but it looks more likely to erode with the rising sun.
Routine midsummer chances of aftn SHRA/TSRA are in the fcst this afternoon, with activity clustering near the Blue Ridge Escarpment midday to mid-aftn, and tending to propagate east into the NC Piedmont. Chances are a little lower than climatology. VCSH is mentioned at all sites except KAND, with a TEMPO at KAVL and PROB30 at KHKY, since these sites are nearer the terrain. Some activity may hold on later into the evening with the aid of an upper trough moving over the region. Restrictions look likely Wed morning in the mtn valleys once again, but confidence is low on any restrictions elsewhere; sites hit by thunderstorms late in the day or this evening will be at some risk of daybreak fog.
Outlook: Diurnally-driven afternoon/evening showers and thunderstorms will be possible thru the rest of the work week. Morning restrictions will also be possible, especially over the usual mountain valleys.
Confidence Table .
11-17Z 17-23Z 23-05Z 05-06Z KCLT High 80% High 100% High 100% High 100% KGSP High 80% High 100% High 100% High 100% KAVL Med 65% High 100% High 100% High 83% KHKY High 85% High 100% High 100% High 100% KGMU Med 75% High 100% High 100% High 100% KAND High 85% 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 . 08 NEAR TERM . 08 SHORT TERM . HG LONG TERM . HG AVIATION . 08
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|Macon County Airport, NC||15 mi||67 min||N 0||10.00 mi||Overcast||67°F||63°F||90%||1018.6 hPa|
Link to 5 minute data for K1A5
Wind History from 1A5 (wind in knots)
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|2 days ago||Calm||E||E||SE||W||SW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
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Wind Forecast for Greenville-Spartanburg, SC (10,2,3,4)(on/off)  Help
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