frost advisory
Patchy frost is expected tonight. Temperatures are expected to fall to near the freezing mark for areas inland from the Great Lakes. Light to moderate southwesterly winds overnight may prevent frost formation in some areas. Damage to plants, trees, and crops is possible. Take preventative measures t
Event record
- severityModerate
- typealert
- placeSt. Catharines - Grimsby - Northern Niagara Region, ON
- countryCA
- sourceEnvironment and Climate Change Canada (ECCC)
- first seen2026-10-18
- rendered2026-10-18 05:42 UTC
- ends2026-10-18
- alert typeadvisory
What to do
- Follow the instruction of the issuing authority exactly.
- Keep windows and doors closed if a gas or smoke cloud is announced.
- Keep clear of emergency access routes.
Who is behind this page
Environment and Climate Change Canada (ECCC) published the record behind this page. Waarning aggregates public feeds, keeps the issuing body named and links to the original entry. Follow the instructions of your local authorities — this page is not a warning issued by Waarning.
Everything about this warning type
Rendered on request from the live feed and cached for up to 10 minutes; the source entry stays authoritative. Sitemap: /sitemap-events.xml
Frequently asked questions
Who reported this?
Environment and Climate Change Canada (ECCC) published the record behind this page. Waarning does not issue warnings of its own.
Where did this happen?
St. Catharines - Grimsby - Northern Niagara Region, ON.
What should I do?
Follow the instruction of the issuing authority exactly. Keep windows and doors closed if a gas or smoke cloud is announced. Keep clear of emergency access routes.