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A rainy morning commute in southern Ontario

Staff writers

May 9, 2012 — It was a rainy Wednesday morning commute for some throughout southern Ontario.

Rainfall through Wednesday
Rainfall through Wednesday

Although the rain was consistent, April was a relatively dry month for parts of southern Ontario. Toronto recorded about 39 mm of rain last month -- about 19 mm below average. Now, portions of the province have received some much-needed precipitation. A low-pressure system that created a rainy commute for some on Tuesday, will continue into Wednesday. 

Rainfall totals across southern Ontario have been varied over the last two days, but many communities close to the lakeshore saw some wet weather during the morning hours. By Wednesday morning, some places in Ontario had seen upwards of 27 mm of rain. 

The Weather Network's meteorologist Dayna Vettese says the wet conditions are expected to last throughout most of the day, with the risk of "non-severe thunderstorms". 

Though this system calls for light showers, between 5-10 mm at most, drivers should always take extra caution and leave extra space while taking the roads. 

The wet weather has prompted conservation authorities to remind people to stay away from rising rivers and streams.

What defines a thunderstorm as "severe"?

A thunderstorm is defined as severe if it produces one or more of the following:

  •  Wind gusts of 90 km/h or greater
  •  Hail of 2 cm in diameter or greater
  •  Rainfall amounts of 50 mm or greater in one hour or less
  •  A tornado

Visit the Canadian Cities Index to learn about weather conditions across the country.

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