Frost Advisory Issued for Northwestern Ontario: Precautionary Measures Recommended

Frost Advisory

Advisory Overview

Affected Areas

A frost advisory has been issued for the following areas in Northwestern Ontario:

  • Thunder Bay
  • Ignace
  • Dryden
  • Vermilion Bay
  • Fort Frances
  • Atikokan
  • Sioux Lookout
  • Superior West

Advisory Details

Issued at 12:09 AM EDT on Monday, June 10, 2024, the frost advisory warns that temperatures are expected to drop near the freezing mark overnight into early Monday morning. This sudden temperature drop can pose a significant risk to plants, potentially causing damage or even destroying more sensitive vegetation.

Precautionary Measures

For Gardeners and Farmers

Given the risk of frost, it is crucial to take preventative measures to protect plants, especially those in frost-prone areas. Here are some steps you can take:

  • Cover Up Plants: Use frost cloths, sheets, blankets, or burlap to cover plants. Ensure the coverings extend to the ground to trap warm air.
  • Water Plants: Well-hydrated soil retains more heat than dry soil, so watering plants during the day can help protect them.
  • Move Potted Plants Indoors: If possible, bring potted plants inside or place them in a garage or shed for the night.
  • Use Mulch: Adding a layer of mulch can help insulate the soil and protect plant roots.

For Homeowners

  • Protect Outdoor Faucets: Wrap outdoor faucets to prevent them from freezing.
  • Check Heating Systems: Ensure your heating systems are working properly to maintain indoor warmth.

Historic Weather Data

Historically, the lowest temperatures recorded in these regions during early June can approach the freezing mark, which reinforces the need for caution.


As temperatures are expected to drop near freezing overnight into early Monday morning, residents of Thunder Bay, Ignace, Dryden, Vermilion Bay, Fort Frances, Atikokan, Sioux Lookout, and Superior West should take necessary precautions to protect their plants from frost damage. Covering plants and ensuring they are well-hydrated are key steps in mitigating the potential impacts of frost.

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