Notice

Severe thunderstorm warning in effect for Mississauga

A severe thunderstorm warning is now in effect for Mississauga bringing heavy rain, strong wind gusts and thunderstorms. If you’re heading out, plan ahead, use caution and stay alert to changing conditions.

Emergency and public safety | July 9, 2026

Cars driving on a wet rainy road.

Environment and Climate Change Canada has upgraded its earlier watch to a severe thunderstorm warning for Mississauga.

The Credit Valley Conservation (CVC) has also issued a water safety statement. Water levels in rivers and creeks may rise quickly, creating dangerous conditions.

Reminders

Periods of heavier rain may lead to higher water levels across the city. For safety, residents are urged to:

  • Stay away from rivers, creeks, stormwater ponds and Lake Ontario.
  • Avoid low-lying areas that may flood quickly.
  • Watch for washouts near culverts and bridges.

Driving and outdoor safety

Wet weather can create hazardous conditions. Residents are reminded to:

  • Allow extra travel time.
  • Slow down and leave space between vehicles.
  • Drive according to road and weather conditions.
  • Avoid driving through flooded roads or pooled water.
  • Turn around if routes are not safe.

Pedestrians and cyclists should take extra care. Wet surfaces may be slippery and visibility may be reduced.

Fallen trees

To report a fallen or unsafe tree:

What is a flood watch or warning?

  • Flood outlook: Early notice of the potential for flooding.
  • Flood watch: Flooding may happen in certain areas.
  • Flood warning: Flooding is happening or will happen soon.

If a flood warning has been issued, act immediately to protect yourself from danger and your home from flood damage.

How residents can prepare

Small steps can help reduce risk:

  • Clear debris from storm drains near your home.
  • Check downspouts and direct water away from foundations.
  • Secure loose outdoor items.
  • Prepare an emergency kit in case of power outage.

City response

The City of Mississauga is monitoring weather conditions and local waterways.

City crews will monitor storm drains and respond to flooding or water pooling. Residents can report issues online or by calling 311 (or 905-615-4311 from outside city limits). The City’s Office of Emergency Management continues to work with conservation authority partners.

Stay informed

Weather conditions can change quickly. Residents are encouraged to:

For flooding concerns, call 311.

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Media contact

City of Mississauga Media Relations
media@mississauga.ca
905-615-3200, ext. 5232
TTY: 905-896-5151
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