Typhoon Hagibis, the most powerful tropical storm to hit Tokyo in decades, plowed a large portion of Japan's main island on Saturday evening and early Sunday, bring torrential rains and high-speed winds that paralyzed the capital and neighboring prefectures.

Millions of residents in a dozen prefectures were affected by the highest level of emergency evacuation notices on Saturday night and early Sunday.

Unlike last month’s Typhoon Faxai, whose high-speed winds caused extensive structural damage, flooding Flooding from storm surges and overflowing rivers appears to account for a large part of damage from Hagibis, the 19th typhoon of the season in Japan.