At least four people died after a powerful atmospheric river event, including a bomb cyclone, hit the U.S. West Coast and parts of Canada, causing widespread damage and leaving thousands without power.

Nearly 1 million customers lost electricity at the storm’s peak, with hurricane-force winds toppling trees onto power lines.

Two deaths occurred in Washington due to falling trees, while flooding and rough seas claimed two lives in California.

An Amtrak train near Seattle struck a tree, damaging its engine but leaving passengers unharmed.

The bomb cyclone, nearing record strength at 945 millibars, resembled a hurricane on satellite images and prompted a Tornado Warning in Oregon.

Puget Sound Energy reported severe damage to its transmission system, with power restoration expected to take days, Fox Weather has reported.

Santa Rosa, California, recorded over 12 inches of rain during the storm, a rare 1-in-1,000-year event.

Another, less severe weather system is expected to bring rain and snow to the West Coast and inland areas early Thanksgiving week.

Written by B.C. Begley