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Real-time wind speeds, peak gusts, and surface chop forecasts from NOAA National Weather Service, verified public boat launches, USGS surface water telemetry, and Tennessee state boating regulations for South Holston Lake (Tennessee).
Wind Advisory issued October 9 at 4:48PM EDT until October 11 at 8:00AM EDT by NWS Morristown TN
Peak Gusts: 11 mph. Light surface ripple; smooth navigation.
Cold Shock Hazard: Life jackets are strongly urged for all vessel occupants across open water.
Ramp Accessibility: Local elevation datum referenced for safe boating operations on South Holston Lake.
Advisory Threshold: Official Lake Wind Advisories trigger when sustained winds reach 15 mph or waves exceed 3 ft.
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Very Poor / Avoid for boating (30/100), from 4 available inputs. Supporting this: Wind 5 mph from the east. Gusts to 9 mph. Working against it: Active moderate alert: Wind Advisory. Wind Advisory is in effect for this lake. Boating scores are capped at 30. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
| Forecast Time | Wind (mph) | Gust (mph) | Direction | Surface Chop & Fetch | Watercraft Readiness |
|---|---|---|---|---|---|
| 6 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 7 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 8 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 9 PM | 5 mph | 9 mph | NE | Calm mirror surface; flat wake navigation | Optimal |
| 10 PM | 5 mph | 9 mph | NE | Calm mirror surface; flat wake navigation | Optimal |
| 11 PM | 5 mph | 10 mph | NE | Calm mirror surface; flat wake navigation | Optimal |
| 12 AM | 5 mph | 10 mph | NE | Calm mirror surface; flat wake navigation | Optimal |
| 1 AM | 5 mph | 20 mph | NE | Calm mirror surface; flat wake navigation | Favorable |
| 2 AM | 5 mph | 23 mph | NE | Calm mirror surface; flat wake navigation | Moderate |
| 3 AM | 5 mph | 28 mph | NE | Calm mirror surface; flat wake navigation | Caution |
| 4 AM | 10 mph | 32 mph | NE | Moderate chop (1–2 ft waves); steady navigation | Caution |
| 5 AM | 10 mph | 31 mph | E | Moderate chop (1–2 ft waves); steady navigation | Caution |
| 6 AM | 10 mph | 32 mph | E | Moderate chop (1–2 ft waves); steady navigation | Caution |
| 7 AM | 10 mph | 32 mph | E | Moderate chop (1–2 ft waves); steady navigation | Caution |
| 8 AM | 15 mph | 33 mph | E | Heavy wind chop (2–4 ft waves); small craft caution | Caution |
| 9 AM | 15 mph | 35 mph | E | Heavy wind chop (2–4 ft waves); small craft caution | Caution |
| 10 AM | 15 mph | 35 mph | E | Heavy wind chop (2–4 ft waves); small craft caution | Caution |
| 11 AM | 15 mph | 36 mph | E | Heavy wind chop (2–4 ft waves); small craft caution | Caution |
Surface chop expands with sustained wind duration across South Holston Lake's open water fetch. Early morning hours typically offer the calmest navigation before thermal afternoon winds develop.
Individual boat ramp GPS coordinates are currently being cataloged for South Holston Lake. Public launches are managed by state, county, or local park authorities.
Ramp operational status and courtesy dock availability are subject to seasonal water level shifts and lake management authority guidelines.
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Very Poor / Avoid for kayaking (30/100), from 5 available inputs. Supporting this: Wind 5 mph from the east. Gusts to 9 mph. Working against it: Active moderate alert: Wind Advisory. Wind Advisory is in effect for this lake. Kayaking scores are capped at 30. Confidence is high (90%).