Rainfall warnings have been issued for Toronto and much of the Greater Toronto Area (GTA), with Environment Canada advising that 20 to 40 mm of rain could fall throughout Sunday. The frozen ground’s reduced ability to absorb rain, combined with potential ponding on roads, increases the risk of localized flooding in low-lying areas.
Rainfall Warnings in Effect
- Amount: 20 to 40 mm of rain in Toronto and the GTA
- Timing: Beginning Sunday morning and tapering to isolated showers Sunday night
- Hazards: Localized flooding, ponding on roads, and reduced absorption due to frozen ground
Along with the GTA, other areas such as North Bay and West Nipissing are under a similar rainfall advisory, expecting 15 to 25 mm of precipitation.
Potential Hazards and Safety Precautions
- Localized Flooding: Low-lying areas, especially those near rivers and creeks, are at an elevated risk of flooding.
- Ponding on Roads: Motorists should be vigilant, as standing water can cause vehicles to hydroplane.
- Reduced Ground Absorption: Due to frozen ground, water cannot seep into the soil quickly, potentially increasing surface runoff and flash floods.
- Safety Measures:
- Avoid washouts near rivers, creeks, and culverts.
- Keep children and pets away from fast-moving waterways.
- Monitor weather alerts and forecasts from Environment Canada.
- If severe weather is observed, contact [email protected] or tweet using the hashtag #ONStorm.
Temperature and Extended Forecast
Environment Canada predicts a daytime high of 12°C in Toronto on Sunday—well above the seasonal average of -1°C. Fog patches may develop this evening and dissipate Sunday morning before heavier rainfall sets in.
Looking Ahead to New Year’s Eve and New Year’s Day
- New Year’s Eve (Dec. 31): Cloudy with a 40% chance of rain showers or flurries during the day, increasing to a mix of rain or snow into the evening. High of 4°C, low of 2°C.
- New Year’s Day (Jan. 1): Cloudy skies persist with a 60% chance of rain showers or flurries, daytime high near 2°C, and evening temperatures dipping to around -2°C with a lower chance of flurries.
For those travelling or planning outdoor activities, these mixed precipitation events mean it’s wise to prepare for slippery conditions.
Staying Informed
To stay up to date on the latest weather information and alerts:
- Monitor Official Channels: Keep an eye on Environment Canada’s updates.
- Download Weather Apps: CP24’s newly launched app offers real-time notifications, radar tracking, and news coverage.
- Report Severe Weather: Email [email protected] or tweet using #ONStorm to help meteorologists and other residents remain informed.
The weather may remain unsettled into the coming week as temperatures hover around the freezing mark. If you need to travel, consider leaving earlier to avoid water-covered roads and potential traffic delays.
© 2024 Environment Canada
Information compiled from Environment Canada, CP24, and local news reports.
Always prioritize safety in flood-prone areas and adhere to all local advisories.
This is definitely worrying. My basement flooded last year during a heavy rainfall, so I’m getting my sump pump checked ASAP!