Gregorio Kilili Camacho Sablan, the territory’s delegate to Congress, said residents will need significant help to recover.
At least 43 bodies have reportedly been recovered from a buried gold miners' bunkhouse in a remote Philippine town.
Philippine police say the death toll from Typhoon Mangkhut has climbed to 64.
Typhoon Mangkhut, the strongest storm to hit the country so far this year, is forecast to make landfall early on Saturday.
The tropical storm killed at least 16 people across China's southeastern coast.
The storm registered as a super typhoon, but has since weakened.
The storm also disrupted power supply and forced the cancellation of more than 600 flights.
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Heavy rain and floods reached 13 feet high after the powerful Melor swept across the country.
The storm slammed into the eastern Philippines, packing winds of 95 mph with gusts of up to 115 mph.
The typhoon has left at least 58 people dead, at least nine missing and 100,000 displaced.
Over 5,000 people fled the oncoming typhoon.