Forecast

Coastal Flooding and Storm Surge Risks for Newfoundland this week

By Eddie Sheerr·November 3, 2025 · 11:54 AM

Environment Canada has issued multiple statements warning of higher than normal water levels, large waves, and potential coastal flooding for parts of Newfoundland between Tuesday and Friday as a powerful low-pressure system tracks across the region.

South Coast (Ramea to the Burin Peninsula)

Regions affected: West of Ramea to the Burin Peninsula

What’s expected

Moderate storm surge and large waves will impact the south-facing shorelines from west of Ramea to the Burin Peninsula.

• Maximum wave heights: 4 to 6 metres, breaking on approach to shore

Timing

• Tuesday afternoon and evening

• Greatest impact near high tide (6 p.m. – 8 p.m.)

Potential impacts

• Pounding surf and elevated water levels may lead to localized flooding and coastal erosion

• Infrastructure along vulnerable coastlines could be at risk, especially where similar past events have caused damage

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Southern Avalon Peninsula

Regions affected:

• Southern coastline of the Avalon Peninsula

• Eastern and northern shorelines of Placentia Bay, including the Ragged Islands

What’s expected

Higher than normal water levels and large waves are expected along the southern Avalon, especially on south-facing shorelines.

• Maximum wave heights: 6 to 9 metres, breaking near shore

Timing

• Tuesday afternoon through Wednesday morning

• Most significant impacts near high tide

High Tides:

First: 6 p.m. – 8 p.m. Tuesday

Second: 6 a.m. – 8 a.m. Wednesday

Potential impacts

• Large waves and pounding surf could cause coastal erosion and damage to shoreline infrastructure

• Areas historically prone to surge and wave impacts may experience renewed coastal effects

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East and Northeast Coasts Including Northern Avalon

Regions affected:
White Bay – Baie Verte – La Scie | Green Bay | Bay of Exploits | Gander Bay to Lumsden | Bonavista Bay (north, west, south shores) | Trinity Bay (all shores) | Conception Bay (all shores including Bell Island) | Eastern Avalon coastline

What’s expected

High storm surge and large waves will combine with higher than normal water levels along north-facing shorelines of the northeast and east coasts.

• Maximum wave heights: 4 to 6 metres

Timing

• Wednesday afternoon through Friday morning

• Highest risk coincides with high tide

High Tide Times:

• First: 6 p.m. – 8 p.m. Wednesday

• 2nd: 6 a.m. – 8 a.m. Thursday

• 3rd: 6 p.m. – 8 p.m. Thursday

• 4th: 6 a.m. – 8 a.m. Friday

Potential impacts

• Coastal flooding possible in low-lying and exposed areas

• Wave action and storm surge may cause erosion and shoreline damage, particularly where exposure to open water is greatest

⚠️ Stay Informed

Environment Canada advises coastal residents and mariners to monitor forecasts, warnings, and tide times closely. Sheerr Weather will provide updates as the system intensifies through Tuesday and Wednesday, with onshore winds and wave action peaking near high tide.