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

Second annual Port McNeill & District Chamber of Commerce golf tournament

Golf Holes #2 and #6 are Hole-in-One opportunities, each with a cash prize of $25,000!

No taxes paid by Neucel, Doug Bondue Arena in Port Alice closes

“Neucel owes us a million dollars and it’s pretty hard to stay status quo when you’re short a million.”

Dragonboat society requests new location for 80 square foot storage shed in McNeill

“Part of my concern for using lot B is that it could become a parking lot for them…”

Klatt a force on the field – helps Bantam A Tyee’s win provincials

David Klatt played in every game last weekend down in Nanaimo.

Port McNeill releases in-depth Beach Drive landslide report

“It’s very positive,” said the town’s Public Works Foreman Julian Allen.

Average Canadian family spends 43% of income on taxes: study

Fraser Institute’s consumer report shows taxes accounting for larger chunk of income each year

RCMP to search for body after man drowns in B.C.’s Buntzen Lake

Officers and fire crews responded but the man from the Lower Mainland is believed to have drowned.

Police chiefs call for stricter controls on pill presses to fight opioids

Canada’s police chiefs are urging Ottawa to beef up its fight against the opioid scourge by closely vetting people who import pill presses

Victoria police say explicit calls continue to target women

Over 50 reports of unwanted, sexually explicit calls have come in

‘It’s like a party in your mouth’

B.C. creator’s Milkshake Burger makes its debut at the PNE

Vehicle catches fire near Vancouver Island provincial park

Fire shut down Highway 4 in both directions

Get involved in the Great Canadian Bumble Bee Count

Environmental organization develops app to help with the nationwide count

Most Read