Signs in Prince Rupert point to a tsunami evacuation route in low-lying areas. (Ed Evans / the Northern View)

Tsunami warnings 101: Canada

Here are some things to know about tsunami alerts in Canada and how they work

Some residents along British Columbia’s coastline were woken by tsunami warning sirens early Tuesday morning shortly after an earthquake struck off the coast of Alaska.

Related: Vancouver Islanders ponder need for tsunami siren song

Related: ‘The tsunami alarm failed my household’: North Coast residents concerned over sirens, alerts

Here are some things to know about tsunami alerts in Canada:

— British Columbia learns about potential tsunamis from the U.S. National Tsunami Warning Center.

— The centre uses seismometers and sea level measuring stations, which send real time data to national and regional warning centres, to determine whether there’s a risk.

— After receiving notice from the U.S., federal and provincial emergency officials assess the information to determine whether it poses a threat to B.C.

— There are five levels of alerts that B.C. can send out: a warning, an advisory, a watch, an information statement and a cancellation.

— A tsunami warning means that a “flood wave” is possible and a full evacuation is suggested.

— An advisory means there will likely be strong currents and people should stay away from the shore.

— A watch means the government does not yet know how dangerous the situation is, and people should stay alert as they wait for more information.

— An information statement means an earthquake has occurred, or that a tsunami warning, watch or advisory has been issued for another section of the ocean. But in most cases, there is no threat of a destructive tsunami.

— A cancellation is issued when there’s no longer a threat.

Related: Tsunami warning cancelled for coastal British Columbia

Related: Evacuated Tofino and Ucluelet residents head home after Tsunami Warning cancelled

Related: Tsunami warning prompts evacuations in Port Alberni

The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Ponoka County resident wants $62,000 in lease revenue

County approves revenue to landowner going forward, legal review to look at retroactive funds

Bashaw peewee club’s season comes to an abrupt end

Players decide not to go into playoffs without one of their teammates

Ponoka man attacked by dogs issues plea to town council

Troubles with bylaw and handling of court case prompts presentation to council

Ponoka County receives letter of intent related to livestock operations

The Ponoka Right to Farm Society intends to submit claim through Court of Queens Bench

‘Riya was a dreamer’: Mother of slain 11-year-old Ontario girl heartbroken

Her father, Roopesh Rajkumar, 41, was arrested some 130 kilometres away

Manitoba ‘pauses’ link with ex-B.C. premier Gordon Campbell after allegations

Campbell had been hired to review two major hydro projects

Heritage minute features Japanese-Canadian baseball team, internment

The Vancouver Asahi baseball team won various championships across the Pacific Northwest

Hee-Won Son takes home gold in 500m Female Short Track Speed Skating

Team Alberta sits in second place overall at the Canada Winter Games

Shots fired in Maskwacis home invasion

Maskwacis RCMP are searching for three suspects in a home invasion (with photos)

CRTC report finds ‘misleading, aggressive’ sales tactics used by telecom industry

Report recommends measures to make a fairer situation for consumers

Crude-by-rail shipments set new record in December despite lower price discounts

Canada exported nearly 354,000 barrels per day of oil, up seven per cent from November

Do you live with your partner? More and more Canadians don’t

Statistics Canada shows fewer couples live together than did a decade ago

Maskwacis woman dead, Wetaskiwin man charged with murder

RCMP Major Crimes Unit charge male with first degree murder

Most Read