BEIJING -- Meranti, which has weakened from a super typhoon to a tropical depression, will continue to ravage China's coastal regions with heavy rainfall, the country's observatory said Friday.

Downpours will lash East China's Jiangsu province, Shanghai and Taiwan from Friday afternoon to Saturday afternoon, the National Meteorological Center forecasted, issuing a blue alert.

The central and eastern part of Jiangsu Province will suffer the most, with precipitation reaching up to 260 millimeters.

Meranti, the world's strongest typhoon this year, has left one person dead and 51 injured. It is still sweeping across China with weakening strength.