Northwestern Ontario Storm Damage Tracker 2026

Severe weather hits Thunder Bay from every direction off Lake Superior. We log the storms and snow events that damage roofs so homeowners, reporters, and insurers have one sourced record to point to.

Last updated May 25, 2026

A running log of severe weather events that affect roofs across Thunder Bay and Northwestern Ontario. Each entry lists the date, the type of event, the communities in the path, measured wind, snow, or temperature where reported, and a link to the source. Some entries are Environment Canada warnings that describe the forecast hazard rather than a confirmed damage total. Entry-by-entry logging for the region begins in 2026; we add events as they are reported and sourced.

Confirmed damage Environment Canada warning

Event log

2026 season Logging in progress

Tracker now live for Northwestern Ontario

Affected areas Thunder Bay, Oliver Paipoonge, Shuniah, Nipigon

heavy snow, ice, wind off Lake Superior Typical winter hazards

Sleeping Giant Roofing tracks severe weather that damages roofs across Thunder Bay and Northwestern Ontario: heavy snowfall and snow load, ice and freeze-thaw events, and windstorms off Lake Superior. As events are reported and sourced, they will be logged here with dates, affected communities, and measurements. If your roof has taken storm or snow-load damage, do not wait for it to appear here. Contact us for an inspection.

Source: Environment and Climate Change Canada (Thunder Bay)

Storm or snow-load damage to your roof?

Act fast. Water that gets past damaged shingles can spread into the deck, attic, and ceilings within days, and snow load can stress a roof through a long winter. Take photos before any cleanup, then call for an emergency tarp and inspection. We can also walk you through the insurance claim process.

Emergency Roof Repair Snow Load Guide

Severe weather is getting costlier across Canada

Event-by-event logging for Northwestern Ontario on this page begins in 2026. For longer-term context, insured damage from severe weather across Canada has climbed sharply, which is the trend driving higher claims and premiums everywhere, including the North.

2001-2010 yearly average $701M

2016 (previous record) $6.0B

2024 (new record) $8.55B

Source: Insurance Bureau of Canada

Thunder Bay weather, by the numbers

150+ cm Average yearly snowfall (Thunder Bay)

December to February Coldest months

Source: Environment and Climate Change Canada

Ontario Roofing Industry Statistics Book a roof inspection Roof repair services Thunder Bay service areas

Cite this page

Journalists, bloggers, and researchers are welcome to cite this page. Copy a ready-made citation below, or reach out for comment and the source data behind any figure.

APA

Sleeping Giant Roofing. (2026). Northwestern Ontario Storm Damage Tracker 2026. Retrieved May 25, 2026, from https://sleepinggiantroofing.ca/northwestern-ontario-storm-damage-tracker/

MLA

"Northwestern Ontario Storm Damage Tracker 2026." Sleeping Giant Roofing, 25 May 2026, https://sleepinggiantroofing.ca/northwestern-ontario-storm-damage-tracker/.

Plain link

Northwestern Ontario Storm Damage Tracker 2026. Sleeping Giant Roofing. https://sleepinggiantroofing.ca/northwestern-ontario-storm-damage-tracker/

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