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Environment Canada has issued a special weather statement in effect for:
- Niagara Falls - Welland - Southern Niagara Region
- St. Catharines - Grimsby - Northern Niagara Region
Potentially heavy rain followed by significant snow early Friday.
Rain is forecast to begin tonight ahead of an approaching low pressure system. This rain will then continue into Thursday and become heavy at times. Total rainfall amounts of 15 to 25 mm are likely.
By Thursday evening or Thursday night, the rain is expected to change over to snow after the passage of a strong cold front. Several centimetres of snowfall accumulation will be possible Thursday night through Friday morning, which is Christmas morning. Locally significant accumulations may cause hazardous driving conditions into Saturday morning.
There remains considerable uncertainty as to the exact track of this low pressure system and the timing of the changeover from rain to snow. This will ultimately affect how much snow may fall at any particular location.
Motorists should be prepared for deteriorating winter driving conditions in areas that receive snow from Thursday evening through Friday morning.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.
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