Weather – Special Weather Statement for Thunder Bay

Weather Update


THUNDER BAY – WEATHER – Batten down the hatches – there is heavy rain in the forecast for most of Northwestern Ontario. It is all part of a Colorado Low tracking toward the region.

The rain is expected to start Wednesday evening and continue through until Thursday.

The weather system has the Lakehead Region Conservation Authority issuing a Flood Outlook Update.

Check the closest storm sewer opening near your house to see if it’s covered in snow. If you can’t clear it please contact the City of Thunder Bay at 625-2195. Storm sewers have been upgraded to handle additional capacity but may need to be cleared in order to work.

Special weather statement in effect for:

  • City of Thunder Bay

Mild temperatures and potentially heavy rain this evening through Thursday night.

Rain, heavy at times, is forecast to begin this evening. With temperatures hovering just above the freezing mark, a brief period of freezing rain may occur. However, temperatures will slowly rise tonight ensuring only rain by Thursday morning. Rainfall amounts in the 15 to 30 mm range are expected by the time the rain transitions to snow Thursday night. The heaviest rainfall amounts are forecast near the north shore of Lake Superior through this period.

The heavy rain will combine with mild temperatures in the high single digits to result in potentially significant snowmelt and localized ponding on streets and other low lying areas.

The heavy rain and mild temperatures are associated with a strong Colorado low that will transition across northern Ontario Thursday through Thursday night.

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