On July 22, the JMA estimated peak 10-minute sustained winds of 100 km/h (65 mph) and a minimum barometric pressure of 985 hPa (29.09 inHg).

Despite having persistent deep convection over its center earlier, Prapiroon soon encountered high wind shear and a dry environment.

The origins of Severe Tropical Storm Prapiroon can be traced back to July 15, when the Joint Typhoon Warning Center (JTWC) reported an area of convection roughly 623 km (385 mi) southeast of Manila, Philippines.

At that time, the disturbance was in a favorable environment for development, with warm 29–30 °C (84–86 °F), sea surface temperatures, low wind shear and good equatorial outflow.

[3] On July 19, the JTWC gave a tropical cyclone formation alert to the disturbance, citing a high chance of development.

[4] At 21:00 UTC that day, the JTWC began issuing advisories on the system, classifying it as Tropical Depression 04W after convective bands had wrapped around a partially exposed low-level circulation center.

[13] On July 22, the JMA estimated peak 10-minute sustained winds of 100 km/h (65 mph) and a minimum barometric pressure of 985 hPa (29.09 inHg).

[23] As of July 22, 2024, the National Disaster Risk Reduction and Management Council reported that 852,765 people were affected by Prapiroon, along with the impacts of the southwest monsoon.

[29] As Prapiroon made landfall in Hainan, twelve counties and cities on the island received rainfall in excess of 100 mm (4 in).

[26] Rain squalls impacted the Pearl River Delta, where occasional high wind gusts were reported in elevated parts of Hong Kong.

Emergency response teams were deployed to protect traffic moving through flood and landslide-prone areas and assist in evacuation and recovery efforts.

[32] Heavy rainfall was expected in Northern Vietnam, reaching as high as 300 mm (12 in) in parts of Thanh Hóa province.

[33][34] As the storm landed in Quảng Ninh, Prapiroon became the first tropical cyclone to strike Vietnam in 640 days, ending a record drought of landfalls.

[41] The combination of moisture from Prapiroon and Typhoon Gaemi produced severe thunderstorms across Cambodia, which resulted in strong winds, heavy rainfall, and lightning.

Local authorities cleared the scene of debris and were ordered to control traffic in an effort to prevent further vehicular incidents.