PATTAYA, Thailand – Thailand is facing widespread heavy rainfall from July 31 to August 1, with authorities warning residents to prepare for possible flash floods, forest runoff, and rising water levels in vulnerable areas. The Thai Meteorological Department reported that very heavy rain is expected in parts of the Northeast, East, and South, while some areas in the North, Central region, Bangkok and surrounding provinces may also experience heavy rainfall. The weather conditions are being caused by a monsoon trough extending across the upper North and Northeast, combined with a moderately strong southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand. Residents in areas near foothills, waterways, and low-lying locations are advised to remain alert for possible flash flooding, runoff from mountains, and overflowing rivers caused by accumulated rainfall.
Waves in the upper Andaman Sea are expected to remain strong, reaching 2–3 metres, with waves higher than 3 metres possible during thunderstorms. The lower Andaman Sea and upper Gulf of Thailand may see waves around 2 metres, increasing during storms. Small boats in the upper Andaman Sea are advised to remain ashore, while all vessels should exercise caution and avoid areas affected by thunderstorms. From August 2–4, rainfall is expected to decrease in many areas, although heavy rain may continue in parts of the North and upper Northeast due to the monsoon trough. The southwest monsoon is also expected to weaken.
The Meteorological Department said sea conditions will gradually improve from July 31 to August 4, with waves in most areas decreasing, although stronger waves may still occur during thunderstorms.
Authorities continue to urge the public to monitor weather updates and take precautions, particularly those living in flood-prone areas. Meanwhile, earthquake monitoring between July 28–29 recorded several minor earthquakes, including a magnitude 3.6 quake in Laos, a magnitude 4.4 quake near the Andaman Islands of India, and several smaller events in Myanmar and along the Myanmar-China border. Officials said none had any impact on Thailand.
