Great Slave Lake - Marine Weather - Environment Canada Environment Canada https://www.weather.gc.ca 2026-10-11T22:47:18Z tag:weather.gc.ca,2013-04-16:20261011224718 https://www.weather.gc.ca/template/gcweb/v16.5.0/assets/wmms-alt.png https://www.weather.gc.ca/template/gcweb/v16.5.0/assets/favicon.ico Copyright 2026, Environment Canada STRONG WIND WARNING IN EFFECT, Great Slave Lake - north arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Issued 5:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05701_w1:20261011230000 Forecast for Tonight and Monday. - Great Slave Lake - north arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Wind south 30 knots diminishing to southwest 20 near noon Monday and to west 15 Monday evening. <br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05701_regular_forecast:20261011230000 Extended Forecast - Great Slave Lake - north arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Tuesday: Wind west 15 knots veering to northwest 20 in the morning then diminishing to light in the afternoon.<br/>Wednesday: Wind southeast 15 knots diminishing to light late in the day.<br/>Thursday: Wind light becoming east 15 knots late in the day.<br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05701_extended_forecast:20261011230000 STRONG WIND WARNING IN EFFECT, Great Slave Lake - east arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Issued 5:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05703_w1:20261011230000 Forecast for Tonight and Monday. - Great Slave Lake - east arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Wind south 25 knots tonight. Wind southwest 25 Monday. <br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05703_regular_forecast:20261011230000 Extended Forecast - Great Slave Lake - east arm 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Tuesday: Wind west 15 knots veering to northwest 20 in the morning then diminishing to light in the afternoon.<br/>Wednesday: Wind light.<br/>Thursday: Wind light increasing to northeast 20 knots late in the day.<br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05703_extended_forecast:20261011230000 STRONG WIND WARNING IN EFFECT, Great Slave Lake - basin 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Issued 5:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05709_w1:20261011230000 Forecast for Tonight and Monday. - Great Slave Lake - basin 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Wind southwest 30 knots diminishing to southwest 20 near noon Monday and to west 15 Monday evening. <br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05709_regular_forecast:20261011230000 Extended Forecast - Great Slave Lake - basin 2026-10-11T23:00:00Z 2026-10-11T23:00:00Z Tuesday: Wind west 15 knots veering to northwest 20 in the morning then diminishing to light in the afternoon.<br/>Wednesday: Wind southeast 15 knots diminishing to light late in the day.<br/>Thursday: Wind light.<br/>Issued 05:00 PM MDT 11 October 2026 tag:weather.gc.ca,2013-04-16:05709_extended_forecast:20261011230000