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

Province has been missing in action on flood protection, experts say

Political will to improve dikes lacking, says B.C.’s former flood safety chief

Chilliwack prolific offender a no-show for sentencing hearing

Warrant issued on May 17 for Jeffrey Michael Kizmann wanted for robbery

UPDATED: Pedestrian fatally hit on railway in Agassiz

Police, fire and ambulance responded

UBC study shows dairy cows prefer pasture, reap health benefits from outdoor access

With freshet season in full swing, Fraser Valley dairy farmers might be… Continue reading

Fraser Valley Children’s Choir wins first in ‘Sing Me a Song’ contest’s under 18 category

The group will be visited by B.C.’s Lieutenant Governor, who will present them with their award

Black Press Media to launch Pipeline Full of Controversy series

Series covers Trans Mountain’s history, science, Indigenous reaction, politics and economics

Toronto Raptors star to hold basketball camp in B.C.

DeMar DeRozan is hosting a four-day camp for players aged 6-16 at the University of Victoria

Abbotsford high school teacher charged with sexual offences involving two youths

Henry Kang, 50, charged with two counts each sex assault and sexual exploitation

Military college students accused of violating Qur’an with bacon

Alleged acts by four cadets from the Royal Military College in Quebec caught on video

Canucks sign top prospect Elias Pettersson to entry-level deal

Slick centre drafted No. 5 overall in 2017 NHL draft

Wildfire northwest of Kamloops jumps to 1,600 hectares overnight

Ground crews and aircraft are responding to an estimated 1,600 hectare wildfire approximately 55 kilometers northwest of Kamloops, near the Deadman Vidette Road.

Former B.C. police chief dies in ATV accident

Ex-Nelson top cop began his career in Vancouver

5 to start your day

The latest on mobility pricing, thieves target a farmer’s market, and more

Referendum in Ireland would repeal strict ban on abortion

Voters throughout Ireland have begun casting votes in a referendum that may lead to a loosening of the country’s strict ban on most abortions.

Most Read