Hanoi, Aug. 30 -- A tropical depression in the northwestern part of the East Sea has intensified into a storm - Nongfa, the sixth in the sea this year, according to the National Centre for Hydro-Meteorological Forecasting. At 7am on August 30, the storm's centre was located at some 17.7 degrees North and 108.4 degrees East, around 210km east of the north of central Quang Tri province. Nongfa sustained maximum winds of 62-74km per hour (Level 8) and gusts up to Level 10. It was moving west-northwest at about 20 km per hour. As of 7pm on August 30, it is forecast to be on the mainland of central Ha Tinh and Quang Tri provinces, moving west-northwest at 20km per hour. It is likely to pack winds of Level 7, gusting up to Level 9, at that poin...