Vietnam: Tropical storm Noul strengthens in South China Sea September 15

Event

A tropical depression in the South China Sea strengthened into tropical storm Noul on Tuesday, September 15. Noul is currently located 171km (106mi) northwest of Busuanga Island (Philippines) and is moving northwest. Noul is forecast to strengthen further and will be sustaining winds of up to 130kmh (80mph) by Thursday, September 17, before making landfall north of Hue (Thua Thien-Hue province) between Thursday and Friday, September 18, moving inland towards Laos and Myanmar. Noul is forecast to bring rainfall of between 50-100mm (2-4in), which may cause flash flooding and mudslides, in addition to coastal flooding, in central areas of Vietnam. High winds may also knock over trees and power lines.

Strong winds, heavy rainfall, and associated flooding and landslides are expected in central Vietnam over the coming days. Disruptions to transportation, business, and utilities are likely.

Context

Powerful storm systems are common during the typhoon season from June to November, and are known to particularly affect the North and Central regions. However, a number have also made landfall in the south in recent years due to changes to storms' common paths in the South China Sea. The monsoon season, which typically runs from May to September in the northern and southern regions as well as between October and April in the central region, also brings annual heavy downpours.

It should be noted that sustained torrential rain can trigger life-threatening floods and landslides in low-lying and hilly communities, including in Hanoi and Ho Chi Minh City. Storm surge is also a threat in coastal communities, especially upon the arrival of a storm. Inclement weather can result in disruption to travel, telecommunications, public utilities, commercial activities, and government services.

Advice

Those in areas forecast to be affected by the storm system are advised to monitor local weather reports, confirm flight reservations, adhere to instructions issued by local authorities, anticipate adverse weather and power and transportation disruptions, and remember that running water can be dangerous. Never drive through flooded streets; floodwater may also contain wastewater and chemical products.