URUMQI -- Flood triggered by rainstorm has hit parts of northwest China's Xinjiang Uygur Autonomous Region early Tuesday morning, leaving more than 300 vehicles and 1,000 passengers trapped, according to sources with local meteorological department.

The rainstorm, which started at Monday night, poured down in north, south and east part of Xinjiang, and triggered flood 10 hours later, which crashed roads and communications there at about 7:30 a.m. Tuesday, with 300 vehicles and 1,000 passengers trapped on the roads.

Work is under way for mending the roads and communications.

Rainstorm signs have also shown in anther northwest province of Shaanxi, according to the provincial observatory, which said rainstorm will hit south part of the province from Tuesday.

The observatory warned related departments to take precaution measures for the upcoming rainstorm.