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Snow squall warning replaces watch, 40 cm possible through Friday

Environment Canada upgraded their snow squall watch to a snow squall warning
2024-11-29-snowstorm12
Road closures are possible given the expected poor travel conditions.

WEATHER ALERT
ENVIRONMENT CANADA
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Snow squall warning replaces snow squall watch for:
   Searchmont - Montreal River Harbour - Batchawana Bay, Ont. (048820)
   Sault Ste. Marie - St. Joseph Island, Ont. (048830)

Current details:
Significant lake effect snow squalls expected Thursday into Friday.

Hazards:
Locally heavy snowfall with accumulations of 20 to 40 cm through Friday.
Peak snowfall rates of 5 to 10 cm per hour.
Very poor visibility at times in heavy snow and local blowing snow.

Timing:
Beginning Thursday and continuing into Friday.

Discussion:
While some disorganized lake effect snow may affect the area tonight, more significant lake effect snow squalls off Lake Superior are forecast to develop Thursday morning and persist into Friday. The snow squall bands will likely shift from time to time, although amounts higher than 40 cm are possible if a band locks in for an extended period.

Road closures are possible given the expected poor travel conditions.

Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common. Visibility will be suddenly reduced to near zero at times in heavy snow and blowing snow.

Consider postponing non-essential travel until conditions improve.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

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