UPDATE: 15-25 mm of rain for GTA Thursday night

Rainfall warning in effect

It looks like the GTA will escape the worst of heavy rain rolling across the province.

Environment Canada says the region could see 15-30 mm of rain by Friday afternoon. Initial projections were for as much as 50 mm.

Emergency Preparedness Meteorologist Geoff Coulson says the system will roll into the GTA in the back half of Thursday's evening commute.

"It may begin as a messy mix of rain and snow before changing over to rain and snow before changing over to rain as temperatures continue to rise during the overnight hours", said Coulson.

Coulson says there is still the possibility for flooding with an expected overnight high of eight degrees and rain to wash away a lot of accumulated snow.

Most of the rain will come down Thursday night, but another 5 mm of rain is possible across the GTA before it tapers off Friday afternoon.  Then, Coulson says there's the possibility of flurries.

Environment Canada says there's also a chance of thunder and lightning and wind gusts on Friday of up to 80 km/h, especially along Ontario's lake shores.

Toronto city crews have been trying to prevent flooding, clearing catch basins so that water can easily drain into the sewers.

"The concerns that we have... relates entirely to the risk of what we call overland flow or situations where the rainfall is not getting into the sewers," says Lou Di Gironimo, general manager of Toronto Water.

He is encouraging homeowners to clear any catch basins at the ends of their driveways.

Here is a list of tips for residents on how to prevent flooding in your home:
- Keep melting snow and ice away from your foundation walls.
- Ensure your downspouts are not blocked and are draining properly.
- If it is safe to do so, clear debris from roadside catch basins - the square sewer grates on the road to help water enter the storm sewer.
- If your basement is at an immediate threat of flooding, prepare your basement by moving valuables to shelves or upper floors. Cleaners, paint and chemicals should also be taken off the floor so they do not further contaminate any floodwater that may get into your home.

If your basement has flooded:
- Call your insurance company as soon as possible to report property damage caused by flooding.
- Do not enter a flooded basement, as you may be exposed to sewage or come in contact with water and electricity.
- Be mindful of your health and safety when cleaning up a flooded basement. Do not stand in flood water - call a professional for assistance.
- Call 311 immediately to report basement flooding. During extreme weather, call volumes will be high. Calls will be answered by the first available agent. 311 is open 24 hours a day, seven days a week.

Leave a comment:

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  1. Peter posted on 02/20/2014 09:09 AM
    Thank you for the tips Justine.

    Also, another tip could be that the rain on icy surfaces create one of the
    most slippery surfaces on earth.
    Not even oil or man made substances from 3M or Dupont can be slipperier
    that the "water-ice" combination, (I believe).

  2. john posted on 02/20/2014 10:26 AM
    sounds like we skipped to the month of April
  3. john posted on 02/20/2014 10:33 AM
    sounds like the hot air form queens park kicking in . about time !!!!
  4. dama posted on 02/21/2014 03:03 PM
    Weather forecast failed again .. where is the flooding?
    all these noise just made people panic and stressed out
    for nothing..
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