{"id":139,"date":"2019-09-19T13:00:28","date_gmt":"2019-09-19T13:00:28","guid":{"rendered":"http:\/\/greatlakes-seaway.com\/?page_id=139"},"modified":"2026-03-20T08:28:27","modified_gmt":"2026-03-20T13:28:27","slug":"seaway-opening-and-closing-information","status":"publish","type":"page","link":"https:\/\/greatlakes-seaway.com\/en\/commercial-shipping\/seaway-opening-and-closing-information\/","title":{"rendered":"Seaway Opening and Closing Information"},"content":{"rendered":"<h3>Opening of 2026 Seaway Navigation Season<\/h3>\n<ul>\n<li><a href=\"https:\/\/greatlakes-seaway.com\/en\/news-and-information\/notices\/radio-messages\/\"><span class=\"bodytext\">Radio Messa<\/span><span class=\"bodytext\">ges<\/span><\/a><\/li>\n<li><a href=\"https:\/\/greatlakes-seaway.com\/wp-content\/uploads\/2026\/02\/notice20260219_en.pdf\"><span class=\"bodytext\">Seaway Notice No.1<\/span><\/a><\/li>\n<li><a href=\"https:\/\/greatlakes-seaway.com\/en\/news-and-information\/notices\/notices-to-shipping-montreal-lake-ontario\/\">Notices to Shipping \u2013 Montreal\/Lake Ontario<\/a><\/li>\n<li><a href=\"https:\/\/greatlakes-seaway.com\/en\/news-and-information\/notices\/notices-to-shipping-welland-canal\/\">Notices to Shipping \u2013 Welland Canal<\/a><\/li>\n<\/ul>\n<h3>Weather Information:<\/h3>\n<ul>\n<li>Weather Forecasts\n<ul>\n<li><a href=\"https:\/\/www.theweathernetwork.com\/ca\/14-day-weather-trend\/quebec\/dorval?ref=tabs_14day_table\">The Weather Network: 14 Day Trend \u2013 Dorval<\/a><\/li>\n<li><a href=\"https:\/\/www.theweathernetwork.com\/ca\/14-day-weather-trend\/ontario\/st-catharines?ref=tabs_14day_table\">The Weather Network: 14 Day Trend \u2013 St. Catharines<\/a><\/li>\n<li><a href=\"https:\/\/weather.gc.ca\/saisons\/image_e.html?img=mfe1t_s\">Environment Canada: 30 day Temperature Forecast<\/a><\/li>\n<li><a href=\"https:\/\/www.cpc.ncep.noaa.gov\/products\/predictions\/30day\/\">NOAA: Monthly Temperature Forecast<\/a><\/li>\n<\/ul>\n<\/li>\n<li><a href=\"https:\/\/seaway-greatlakes.com\/environment-info\/water-levels?culture=en-US\">Water Levels and Environmental Data (MLO\/Welland)<\/a><\/li>\n<li><a href=\"https:\/\/weather.gc.ca\/marine\/index_e.html\">Marine Forecasts and Warnings for Canada<\/a><\/li>\n<\/ul>\n<h3>Ice Information:<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><a href=\"https:\/\/www.canada.ca\/en\/environment-climate-change\/services\/ice-forecasts-observations\/latest-conditions.html\" rel=\"noopener noreferrer\"><span class=\"bodytext\">Canadian Ice Service &#8211; Latest Ice Conditions<\/span><\/a><\/li>\n<li><a href=\"https:\/\/greatlakes-seaway.com\/wp-content\/uploads\/2026\/03\/IceBreakup_04022026.pdf\">Outlook for break-up of Ice (Issued Feb 4th, 2026)<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Opening of 2026 Seaway Navigation Season Radio Messages Seaway Notice No.1 Notices to Shipping \u2013 Montreal\/Lake Ontario Notices to Shipping \u2013 Welland Canal Weather Information: Weather Forecasts The Weather Network: 14 Day Trend \u2013 Dorval The Weather Network: 14 Day Trend \u2013 St. Catharines Environment Canada: 30 day Temperature Forecast NOAA: Monthly Temperature Forecast Water<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":18,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"class_list":["post-139","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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