Japan sent tens of thousands of troops and rescue workers on Sunday to save stranded residents and fight floods.
Typhoon Hagibis is one of the worst typhoons to hit the country in recent history.
Reuters reports at least 30 people were killed in the typhoon that left vast sections of towns under water.
Another 15 were missing and 177 injured.
The typhoon paralyzed Tokyo on Saturday and dumped record levels of rain.
About 100,000 homes were left without power.