A large area of low pressure that is currently south of the Maritimes will bring nasty weather to a large swath of Atlantic Canada over the course of the next couple of days.
This low is composed of heavy rain, gusty winds, storm surge, and yes even some snow. Here is a region by region breakdown...
Through the remainder of the day today, we will see rain linger. The rain will continue to be heavy at times. By the time it comes to an end tonight, 40 to 60 mm is possible. The combination of high tide this afternoon combined with strong winds may result in storm surge for Rimouski - Mont-Joli, Matane, Forillon Park - Gaspé - Percé, and New-Carlisle. Some coastal flooding is possible. Winds will also gust to 90 km/h for coastal areas.
Strong winds will be the primary concern across New Brunswick. Gusts up to 90 km/h are expected today and Friday across the Bay of Fundy area and northern sections. Rainfall amounts for the province will generally range from 20 to 35 mm. Storm surge is also possible for northern coastal sections of the province this evening. Some coastal flooding is possible.
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Prince Edward Island
Strong winds with gusts to 90 km/h will engulf Prince Edward Island this afternoon. Total rainfall amounts of 15 to 25 mm are expected. There will be higher than normal water levels and rough surf this afternoon and evening.
The heaviest rain is likely for southern and eastern sections of the province. In these areas 40 to 60 mm of rain is possible. Elsewhere, 20 to 40 mm is possible. Wind gusts up to 90 km/h are expected also, except Les Suêtes winds with gusts to 130 km/h Thursday afternoon. Marine Atlantic has canceled some ferry crossings also.
Newfoundland and Labrador
Tonight through Friday evening, the heaviest rain will fall along the south coast. Rainfall amounts ranging from 30 to 50 mm are possible. The remainder of the island portion of the province will see rainfall amounts of only 5 to 10 mm, Labrador could see 15-25 mm in eastern sections. Rain will mix with, and then change to, snow across western Labrador. Snowfall amounts of 5 to 10 cm are expected, some of which will melt on contact. Wind gusts to 100 km/h are possible along the west coast of Newfoundland. Wreckhouse winds may reach gusts of 140 km/h.