The Meteorological Department reports that rainfall in Thailand is starting to decrease, confirms it is not a "Rain Bomb," and that wind speeds remain too low to upgrade the system to a tropical depression. Continuous monitoring continues for heavy rain in the western region.
On 26 Sep 2026 GMT+7, Mr. Natthawut Dandi, Deputy Director-General of the Meteorological Department, revealed the latest weather situation, stating that the center of the strong low-pressure area is beginning to move toward the Andaman Sea near the border. This is leading to an overall improvement in rainfall conditions across Thailand, with rainfall amounts gradually decreasing.
The Deputy Director-General clarified doubts regarding whether the ongoing continuous rainfall constitutes a "Rain Bomb," stating that it certainly does not. In practice, a Rain Bomb refers to extremely heavy rainfall exceeding 200–300 millimeters within just one hour (such as events previously recorded in Mueang Nan District or Hat Yai District). The current event is caused by a strong low-pressure area, resulting in heavy rain both ahead of and behind the system.
Regarding the Japanese Meteorological Agency's assessment that the situation is a tropical depression, this is only an estimate of wind speeds near the center. Actual measurements from ground-based instruments distributed around the center in Thailand show wind speeds are not high enough to upgrade the system to a tropical depression. Therefore, the Thai Meteorological Department continues to classify it as a strong low-pressure area based on scientific criteria.
In Bangkok and its vicinity, rain intensity is decreasing from evening to night. Light rain may occur in some areas tomorrow morning before conditions gradually improve. Most rainfall in Bangkok is light to moderate, but due to the large cloud mass, rain persists for long periods, causing water accumulation on the ground.
Areas requiring monitoring for heavy rain tomorrow include western regions exposed to monsoon winds (such as Kanchanaburi, Tak, Phetchaburi, Ratchaburi, Uthai Thani extending to Mae Hong Son), eastern provinces (Chanthaburi, Trat, Rayong), and the western side of the southern region. These areas may still experience heavy rain in some locations, necessitating close vigilance against flash floods and landslides.