Southwestern Ontario faces heavy rainfall (30-50+ mm) Wednesday-Thursday, increasing flood risk in already saturated areas. Freezing rain is possible initially, threatening further power outages. Residents should exercise caution.


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Rainfall Warning: Heavy Downpours Expected Across Southwestern Ontario

Southwestern Ontario is bracing for another round of heavy rainfall, with Environment Canada issuing rainfall warnings for several regions, including the Niagara Region and the Greater Toronto Area. This latest weather event, expected to last from Wednesday morning through early Thursday morning, follows a recent ice storm and threatens further disruptions.

What to Expect

Significant rainfall is predicted, with totals ranging from 30 to 50 mm possible. However, Environment Canada warns that amounts could exceed 50 mm in some areas, particularly if thunderstorms linger. The ground is already saturated, meaning there's limited capacity to absorb the additional rainfall, increasing the risk of flooding.

The rain will begin in extreme southwestern Ontario Wednesday morning, reaching the Golden Horseshoe by the afternoon. A special weather statement also highlights the possibility of freezing rain in parts of the GTA and surrounding areas Wednesday morning, potentially leading to icy conditions before transitioning to rain. Areas like Vaughan, Richmond Hill, and Markham are expected to see 2-4mm of freezing rain, while others could see significantly more.

Flood Risk and Safety Precautions

Environment Canada warns of the potential for localized flooding in low-lying areas and flash floods due to heavy downpours. Water pooling on roads is also expected. With high winds accompanying the freezing rain in some areas, there is also a risk of further power outages—Hydro One is still working to restore power to nearly 214,000 customers from the previous storm.

Residents are urged to exercise caution when driving or walking, as surfaces may become icy and slippery. Stay updated on weather warnings through Environment Canada and your local news. If you live in a flood-prone area, take necessary precautions to protect your property.

Staying Safe During a Storm

  • Avoid unnecessary travel during the heaviest rainfall.
  • Monitor weather alerts and updates.
  • Secure loose outdoor objects that could be damaged by wind.
  • Be aware of the risk of flash floods and avoid low-lying areas.
  • If you lose power, take steps to stay warm and safe.

Remember, safety is paramount. Stay informed and take appropriate precautions to protect yourself and your property during this significant weather event.

FAQ

Between 30 and 50+ mm of rain is forecast for Southwestern Ontario from Wednesday to Thursday. This adds to already saturated ground, increasing the flood risk significantly.

Yes, there is a significant risk of power outages. Freezing rain is possible, especially initially, which can weigh down power lines and cause widespread disruptions.

Areas in Southwestern Ontario are particularly vulnerable due to already saturated ground from previous rainfall. Low-lying areas and those near rivers and lakes are at the highest risk.

Charge electronic devices, gather emergency supplies (water, food, blankets), monitor weather updates closely, and secure any loose objects that could be damaged by high winds. Stay informed and follow instructions from local authorities.

For the latest updates and detailed information about the flood warning, check official weather sources and local news channels. Your local municipality's website may also have emergency preparedness information.

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