Parts of Asia face a massive rebuilding effort after the year’s most powerful tropical storm swept through the region on Saturday, leaving a trail of destruction in its wake.

Super-typhoon Mangkhut has moved west into southern China after battering the northern Philippines on Saturday.

“All of the areas that will potentially be impacted by Mangkhut will be at risk from very strong winds, heavy rainfall and flooding, with coastal areas at risk of storm surges,” said Tom Sabbatelli, the Event Response Manager at catastrophe risk modeller RMS.

Risk modellers are still assessing the extent of the damage from Mangkhut, which is the ninth typhoon of the annual typhoon season.

The storm has forced the relocation of more than 2.45 million people in China’s Guandong province and more than 48,000 boats returned to ports before the typhoon arrived.

In Hong Kong, roads are blocked and low-lying areas flooded, but the city managed to avoid serious casualties.

The storm caused at least 64 deaths in the Philippines, which bore the brunt of Mangkhut’s category-5 winds.