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

Columbia River Treaty: ‘It is going to get tough’

B.C. negotiator tells Nelson meeting that talks are cordial, so far

Fowler’s show films in the Flats

YouTube star Zach Fowler films ‘30 Day Survival Challenge’ YouTube series in Canal Flats

Valley YouTuber sets sights on survival show stardom

Greg Ovens releases 30 Day Survival Challenge videos on his new YouTube channel

Debate over short-term rentals in Radium

More than 30 interested individuals come out to Saturday meeting to discuss short-term rental licensing

RCMP report

Some of the more interesting callouts for Columbia Valley RCMP Nov. 11-17

B.C. politicians view supermodel’s transition journey on Transgender Day

Liberal MLA Jane Thornthwaite and New Democrat MLA Spencer Chandra Herbert appear in the documentary

John Mann, singer and songwriter of group Spirit of the West dead at 57

Mann died peacefully in Vancouver on Wednesday from early onset Alzheimer’s

VIDEO: B.C. high school’s turf closed indefinitely as plastic blades pollute waterway

Greater Victoria resident stumbles on plastic contamination from Oak Bay High

B.C. mayor urges premier to tweak road speeds in an ‘epidemic of road crash fatalities’

Haynes cites ICBC and provincial documents in letter to John Horgan

South Cariboo Driver hits four cows due to fog

The RCMP’s investigation is ongoing

B.C. won’t appeal decision protecting ICBC court experts

Change to evidence rules next to save money, David Eby says

1898 Yukon gold rush photo featuring Greta Thunberg look-alike sends internet into tailspin

Jokes erupted this week after a 120-year-old photo taken by Eric A. Hegg surfaced from archives

BC Ferries’ two new hybrid vessels set sail for B.C. from Romania

Two Island Class ferries to be in use by 2020

Distracted driving tickets not for ICBC revenue, B.C. minister says

Minister Mike Farnworth calls SenseBC analysis ‘nonsense’

Most Read