Sen. Josh Hawley (R-MO) called on the Federal Emergency Management Agency to deliver critical assistance to St. Louis, which was devastated by an unprecedented tornado that killed more than a dozen people Friday.

Footage from Maxar Technologies via Storyful shows the extent of damage by comparing photos taken from above in north St. Louis on April 22 - nearly one month ago - and May 18 - two days after the destruction.

The tornado that tore across the St. Louis area Friday reached EF3 intensity and a mile in width, the National Weather Service said after a damage survey.

The 23-mile-long twister claimed the lives of five people and caused over $1 billion in damages in the St. Louis region on Friday.

St. Louis Mayor Cara Spencer acknowledged that a mishap prevented tornado sirens from warning residents about a deadly tornado.

KSDK reporter Mercedes Mackay found herself part of the story after a tornado swept through St. Louis. The top-floor apartment she shares with a roommate was destroyed by an EF3 tornado over the weekend.

St. Louis officials provided an update on storm recovery Tuesday afternoon. Five people were killed in the storm.

St. Louis Mayor Cara Spencer said protocol failures and a lack of clarity on responsibility caused sirens not to sound before Friday's deadly tornado.

The St. Louis Zoo was right outside the path of an EF-3 tornado and managed to keep hundreds of animals, insects, reptiles and 10,000 visitors safe.

St. Louis city officials will conduct a planned tornado siren test at 3 p.m. Tuesday, according to fire chief Dennis Jenkerson.