More than 1,000 people were in shelters across Guam and the Northern Mariana Islands as Sinlaku moved away

Super Typhoon Sinlaku hammered the Northern Mariana Islands, flipping over cars, toppling utility poles and ripping away tin roofs.

Authorities were just beginning to assess the damage left behind by the typhoon, which first hit the islands on Tuesday night local time and continued with a barrage of fierce winds and relentless rains for hours on Wednesday. So far, there have been no reports of deaths.

Power was out and many of the roads were impassible across Saipan, a US territory that’s the largest of the Mariana Islands and home to about 43,000 people, according to local officials.

The storm also battered Guam, another US territory and the site of several US military bases, with tropical force winds.