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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 California state boating regulations for Lewiston Lake (California).
Frost Advisory issued October 11 at 3:09PM PDT until October 12 at 9:00AM PDT by NWS Eureka CA
Cold Shock Hazard: Water is below 60°F. Immediate cold shock hazard upon submersion. USCG life jackets essential.
Ramp Accessibility: Local elevation datum referenced for safe boating operations on Lewiston 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.
Good for boating (76/100), from 4 available inputs. Supporting this: Wind 10 mph from the north-northeast. Gusts to 17 mph. 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 |
|---|---|---|---|---|---|
| 5 PM | 10 mph | 18 mph | NE | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 6 PM | 10 mph | 18 mph | NE | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 7 PM | 10 mph | 18 mph | NE | Moderate chop (1–2 ft waves); steady navigation | Favorable |
| 8 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 9 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 10 PM | 5 mph | 9 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 11 PM | 7 mph | 12 mph | NE | Light surface ripple; gentle boat glide | Optimal |
| 12 AM | 7 mph | 12 mph | NE | Light surface ripple; gentle boat glide | Optimal |
| 1 AM | 7 mph | 12 mph | NE | Light surface ripple; gentle boat glide | Optimal |
| 2 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 3 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 4 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 5 AM | 1 mph | 2 mph | W | Calm mirror surface; flat wake navigation | Optimal |
| 6 AM | 1 mph | 2 mph | W | Calm mirror surface; flat wake navigation | Optimal |
| 7 AM | 1 mph | 2 mph | W | Calm mirror surface; flat wake navigation | Optimal |
| 8 AM | 0 mph | 1 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 9 AM | 0 mph | 1 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 10 AM | 0 mph | 1 mph | — | Calm mirror surface; flat wake navigation | Optimal |
Surface chop expands with sustained wind duration across Lewiston 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 Lewiston 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.
Poor for kayaking (52/100), from 5 available inputs. Supporting this: Wind 10 mph from the north-northeast. Gusts to 17 mph. Water temperature is 51°F (combined air+water: 117°F). Cold shock hazard: sudden immersion below 55°F poses serious risk. Confidence is high (90%).