Typhoon Rumbia is still potent as it churns north

Record levels of precipitation widely reported in many regions

Weather authorities issued fresh warnings on Monday, advising residents to brace for heavy rain and strong winds as a weakened Typhoon Rumbia heads toward northeastern China.

The violent storm, which has claimed at least 16 lives since making landfall in Shanghai's Pudong New Area on Friday, was downgraded on Monday after losing strength.