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What to do during heavy rain fall



Heavy rainfall



Prepare you family or business for an emergency,

Get prepared



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During heavy rainfall

Prepare you family or business for an emergency

Whether it lasts for a few minutes or several days, heavy rainfall can have significant impacts, particularly between the months of May and September in Calgary. Heavy rain can cause pooling, overflowing rivers and runoffs, and flooding. These events may result in evacuations, power outages, supply shortages, traffic obstructions and road closures, infrastructure damage and debris.

How to prepare for heavy rain fall

  • Ensure storm drains near your house are clear and free of debris that would prevent proper drainage.
  • Clear eaves trough and ensure they are pointed down and away from your home and foundation.
  • Make sure that you and your family are as prepared as possible in the event a flood occurs.

Staying safe during heavy rain fall

  • Wear protective clothing and seek shelter to avoid exposure. Stay inside.
  • Stay away from windows and doors during times of heavy rain and strong winds.
  • Avoid roadway underpasses, drainage ditches, low lying areas and areas where water collects, as they can unexpectedly flood or overflow.
  • Avoid driving in heavy rain due to poor visibility. If possible, park and wait until the rain has slowed or stopped to continue your journey.
  • Do not try to drive across a flooded road. Water may be deeper than it appears and may contain debris, sharp or dangerous objects, pot holes or electrical wires.
  • Vehicles can become unstable or even swept away if caught up in fast flowing or pooling flood waters. It only takes a few inches of water to displace a vehicle.
  • Stay away from power lines or electrical wires.
  • Monitor alerts and weather reports for flash flood warnings and updates.

Calgary gets to two types of summer heavy rains

  1. Large scale weather systems with long-term rainfall

    These large weather systems can last several days and result in significant flooding. Environment Canada issues Rainfall Warnings for this type of event.

  2. Short-lived thunderstorms with significant rainfall
    Within a short period of time, sometimes only minutes, localized downpours from thunderstorms can produce flash flooding. Environment Canada issues Severe Thunderstorm Warnings for these types of rainfall events.

After a heavy rain fall

  • Inspect any damage that may have occured to your property.
  • If you were evacuated due to flooding, learn the steps to take once you come back home.
  • Learn how to safely clean up after a flood. Find tips on what to keep or throw away, and whether you can do-it-yourself or hire a professional cleaner.