Vietnam: Adverse weather forecast nationwide through at least April 16

Event

Thunderstorms, strong winds, landslides, and flooding are forecast across Vietnam through at least April 16. As of early April 16, the Vietnam National Center for Hydro-Meteorological Forecasting (NCHMF) has warned of heavy rain of 1.5-3 cm (0.6-1.2 inches) and thunderstorms across northern Vietnam and from Thanh Hoa to Thua Thien Hue provinces through April 15. Moderate to heavy rain with scattered thunderstorms is likely in the South the evening of April 15. Low temperatures are likely in the North and North Central regions April 15-16, while strong winds and large waves are forecast in the northern Gulf of Tonkin from early April 15. Tornadoes, lightning, hail, and strong winds are also possible during thunderstorms. The NCHMF has issued a level 1 warning of natural disaster risk due to tornadoes, lightning, and hail.

Hazardous Conditions
Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where the soil has become saturated by heavy rainfall. Disruptions to electricity and telecommunications services are possible where significant flooding, strong winds, or landslides impact utility networks.

Transport
Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters.

Severe weather could also trigger flight delays and cancellations at airports in the region, including but not limited to Da Nang International Airport (DAD). Authorities may temporarily suspend port operations or close beach fronts along the South China Sea if strong winds trigger hazardous sea conditions. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas that see heavy rainfall and potential track inundation.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities and some employees' inability to reach work sites.

Advice

Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments before travel. Make allowances for localized travel delays and potential supply chain disruptions where flooding has been forecast. Do not drive on flooded roads. Charge battery-powered devices in the case of prolonged electricity outages.

Resources

Vietnam National Centre for Hydro-Meteorological Forecasting (Vietnamese)