More than 120 people have been reported killed by Typhoon Haiyan in the Philippines, after the massive storm passed through the country on Friday.
The storm destroyed buildings and triggered landslides. The military has begun relief efforts.
Video from the city showed it engulfed by water when the typhoon struck.
It was one of the most powerful storms on record to make landfall.
Aid agencies are struggling to reach Tacloban, as its airport has been badly damaged but military flights are able to operate, the BBC’s Jon Donnison reports from Manila.
Communications to some of the worst-hit areas were cut off when the storm hit and it may be days before the final death toll is known.
So far, only four people have been confirmed dead and another four are missing.
“We have reports of collapsed buildings, houses flattened to the ground, storm surges and landslides,” Philippine Red Cross chief Gwendolyn Pang told AFP news agency.
“But we don’t know really, we can’t say how bad the damage is… hopefully today we can get a better picture as to the effects of the super typhoon.”