Marek Kučera 
Invest 93W is a tropical disturbance in the Western Pacific that has recently intensified into a tropical depression / weak tropical storm as it approaches Southeast Asia. As of the latest observations, 93W is producing sustained winds near 35–45 knots (≈65–85 km/h) and has a central pressure around 1006–1008 mb, with tropical storm-force winds extending outward approximately 40–50 nautical miles. The system’s convection remains well-organized, favoring heavy rainfall and gusty winds over landfall areas.
The storm is forecast to make landfall along central Vietnam, impacting provinces such as Quang Binh, Quang Tri, and Thua Thien-Hue. Rainfall totals are expected to reach 150–250 mm, with mountainous regions receiving up to 300 mm, which may trigger flash floods, landslides, and river flooding. Coastal winds are forecast to gust up to 60–80 km/h, producing minor coastal flooding and elevated waves along the South China Sea.
After crossing Vietnam, 93W is expected to move into southern China (Guangxi, Guangdong, Hainan), bringing continued heavy rainfall (50–150 mm), gusty winds, and localized flooding. The combination of tropical moisture with monsoonal flow may enhance rainfall inland, leading to flooded rice paddies, urban inundation, and transport disruption. The system is forecast to gradually weaken over land but retain enough energy to produce rainfall across southern China for 24–48 hours after landfall.
Meteorologically, 93W’s compact tropical circulation, high moisture content, and interaction with the South China Sea monsoon trough are responsible for its intensification and heavy precipitation potential. Despite not being a strong typhoon, the system poses a significant hydrological hazard for both Vietnam and southern China.
Summary of Impacts:
- Vietnam: Heavy rainfall (150–300 mm), flash floods, landslides, gusty winds up to 80 km/h, coastal flooding, transport disruption.
- Southern China: Rainfall 50–150 mm, gusty winds 50–70 km/h, urban flooding, agricultural impact, river flooding.
- Coastal & Oceanic Hazards: Elevated waves 2–4 m in the South China Sea, dangerous for small craft and coastal communities.
Marek Sadowski 
