Day 1 Outlook

Valid: Thursday, November 7, 2019 - 12AM to Friday, November 8, 2019 - 12AM

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Forecast Discussion

Issued: Wednesday, November 6, 2019 - 11:00PM

Forecaster: Brennen Perry

A swarth of moderate to heavy snowfall will bring accumulating snowfall to Eastern Ontario overnight Wednesday into Thursday morning. Total accumulation between 5-10cm is possible for areas near Lake Ontario and along the New York border. Elsewhere, up to 5cm of snowfall from this system can be expected by the time it moves out of the region by the noon hour on Thursday. Lake effect snow and significant snow squalls will develop in the wake of the system beginning Thursday afternoon with winds coming out of the northwest. This will result in the strongest snow bands to predominantly affect areas around the southern Georgian Bay and eastern/southeastern Lake Huron shorelines. Between 10-25cm can be expected by Thursday night with locally higher amount (in particular the Blue Mountain region just west of Collingwood) within the strongest snow squalls. Please note this is a multi-day lake effect event so snow totals will continue to increase after midnight - refer to our regional snow squall outlooks (to be issued very soon) for information on total accumulation from lake effect snow over the next few days.


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