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Small Craft Warning conditions on Lake Simcoe — 5 October 2026

Monday, October 5, 2026 •Waterway Alerts

Resolved · Oct 5, 2026 6:15 am ETConditions on Lake Simcoe have fallen back below Environment Canada’s small-craft threshold. The buoy is now reporting 15.6 kt with seas of 0.6 m.

Environment Canada buoy 45151, mid Lake Simcoe, is reporting conditions at Small Craft Warning levels as of Oct 5, 2026 5:00 am Eastern. These are measurements from the lake itself, not a forecast.

Wind 21.4 kt from the W (260°)
Seas 0.5 m (1.6 ft)
Dominant period 3 seconds
Water temperature 17 °C (62.6 °F)

Lake Simcoe is one of two open-water crossings on the Trent-Severn and has no hydrometric gauge, so this buoy is the only live reading available for it. Conditions here build and ease quickly — the live conditions page updates every fifteen minutes.


Sources: Environment and Climate Change Canada buoy 45151, distributed through the NOAA National Data Buoy Center. Warning thresholds are ECCC’s published marine criteria. Open Government Licence — Canada.
This alert was assembled automatically from live official feeds the moment the change appeared, and is updated in place when conditions clear. It is a report of what the feeds say — not a substitute for the official source, and not navigational advice. Confirm anything that affects your passage directly with Parks Canada or the Canadian Coast Guard before you commit to it.

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