Moderate Heavy Rain ● Monitoring
yellow warning - rainfall - in effect — City of Thunder Bay, Canada
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
Significant rainfall continues.
What:
Additional rainfall amounts of 20 to 40 mm.
Multi-day rainfall totals near 80 mm, with higher amounts possible.
When:
Continuing tonight and ending Thursday morning.
Discussion:
Some areas have received in excess of 70 mm from Monday through Wednesday. As a result, the ground may have a reduced ability to absorb additional rainfall.
###
Water will likely pool on roads and in low-lying areas.
For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit https://www.ontario.ca/page/floods for the latest details.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.
Measurements
| Coordinates | 48.4007, -89.1595 |
|---|---|
| Region | City of Thunder Bay |
| Location Precision | polygon |
| Issuing Authority | Canada — ca-msc-xx |
| Cap Urgency | Future |
| Cap Certainty | Likely |
| Cap Expires | 2026-11-05T20:03:53-00:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 2 days ago (Nov 5, 2026 04:07 UTC) · we last heard from WMO Alert Hub (national weather services) 38 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
Official authorities in Canada
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for Canada →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flash flood risk awareness, urban drainage flooding, and staying safe during cloudbursts and monsoon downpours.
Open Extreme Rain & Flash Flood Safety →Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.