Tsunami watches and warnings issued for West Coast of U.S. and Canada

Tsunami warning.
A tsunami warning alert is seen on a notice board above State Highway 1 in Wellington. Photo: Marty Melville / AFP / Getty Images

All U.S. tsunami watches on the West Coast have been canceled following a 7.9 magnitude earthquake in the Gulf of Alaska early Tuesday morning, although advisories remain for Alaska, The Weather Network reports. Tsunami warnings for British Columbia in Canada have ended, but all clears are not yet issued for some areas.

Why it matters: “The first wave may not be the largest,” per The Weather Channel. Tsunami warnings and watches are frequently upgraded or downgraded as more observations come in.