According to the National Center for Hydro-Meteorological Forecasting, last night and early this morning, November 9th, a cold front affected the mountainous and midland areas of Northern Vietnam. Northern and North Central Vietnam experienced showers and scattered thunderstorms; while the southern part of the Northern Delta, Thanh Hoa, and northern Nghe An received moderate to heavy rain.
In Hanoi , through monitoring satellite cloud imagery, lightning location data, and weather radar images, the meteorological agency has observed active and developing convective clouds in many areas.