Residents near the coastline warned to be aware of rapid tide changes

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The City of St. John’s is advising residents in Quidi Vidi, the Battery and the Outer Battery areas of the city to take necessary precautions due to expected abnormal tidal changes today.

Environment Canada states that with the passage of hurricane Cristobal well offshore of Newfoundland, its rapid forward speed of travel over the southern Grand Banks may trigger rapid tide-like changes in harbour water levels over eastern Newfoundland.

The most probable period for this would be later this morning and into the afternoon and areas most prone to this range from the southern Avalon to the Bonavista Peninsula.

Tropical storms that have raced across the Grand Banks (moving over 100 km/h) in the past have caused water levels in harbours to rise and fall two or three times over the span of an hour and fluctuate by as much as two or three metres (six to 10 feet).

“This is an advisory that this may — repeat may — occur and interests along the coast should be on the watch for this possibility. Predicting the actual water level changes for various harbours is very difficult,” the statement notes.

Organizations: Environment Canada

Geographic location: Newfoundland, Southern Avalon

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