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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 Washington state boating regulations for Lake Sammamish (Washington).
Peak Gusts: 3 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 Lake Sammamish.
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.
Excellent for boating (99/100), from 4 available inputs. Supporting this: Wind 0 mph from the south-southeast. Gusts to 1 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 |
|---|---|---|---|---|---|
| 10 PM | 0 mph | 1 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 11 PM | 0 mph | 1 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 12 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 1 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 2 AM | 0 mph | 2 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 3 AM | 0 mph | 4 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 4 AM | 0 mph | 4 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 5 AM | 0 mph | 4 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 6 AM | 0 mph | 4 mph | — | Calm mirror surface; flat wake navigation | Optimal |
| 7 AM | 1 mph | 4 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 8 AM | 1 mph | 5 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 9 AM | 1 mph | 5 mph | E | Calm mirror surface; flat wake navigation | Optimal |
| 10 AM | 1 mph | 2 mph | N | Calm mirror surface; flat wake navigation | Optimal |
| 11 AM | 1 mph | 5 mph | N | Calm mirror surface; flat wake navigation | Optimal |
| 12 PM | 2 mph | 6 mph | N | Calm mirror surface; flat wake navigation | Optimal |
| 1 PM | 3 mph | 8 mph | N | Calm mirror surface; flat wake navigation | Optimal |
| 2 PM | 5 mph | 10 mph | N | Calm mirror surface; flat wake navigation | Optimal |
| 3 PM | 5 mph | 10 mph | N | Calm mirror surface; flat wake navigation | Optimal |
Surface chop expands with sustained wind duration across Lake Sammamish'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 Lake Sammamish. 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.
Excellent for kayaking (97/100), from 5 available inputs. Supporting this: Wind 0 mph from the south-southeast. Gusts to 1 mph. Confidence is high (90%).