Bangkok: The Meteorological Department has issued a warning for heavy rain affecting the lower southern region of Thailand, with potential for flash floods, mudslides, and river overflows in ten provinces. Meanwhile, the temperatures in northern Thailand are expected to increase by 1-2 degrees Celsius. According to Thai News Agency, the heavy rainfall is primarily concentrated in the provinces of Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Phuket, Krabi, Trang, and Satun. The adverse weather conditions are attributed to a low-pressure system over the lower Andaman Sea and Malaysia, combined with a persistent northeast monsoon affecting the upper Gulf of Thailand, the upper southern region, and the upper Andaman Sea. Residents in these areas are strongly urged to remain vigilant against potential hazards such as heavy rainfall, flash floods, mudslides, and river overflows, especially in hillside regions near waterways and low-lying areas. Maritime conditions are also a concern, wit h strong winds and waves in the Gulf of Thailand and the Andaman Sea. Wave heights are reaching 2-3 meters, and areas experiencing thunderstorms may see waves exceeding 3 meters. Boat operators in these regions are advised to exercise extreme caution and avoid sailing in areas prone to thunderstorms. Additionally, small boats in the Gulf of Thailand and the Andaman Sea are recommended to stay ashore for at least another day. In contrast, northern Thailand is experiencing a slight warming trend, with temperatures rising by 1-2 degrees Celsius and morning fog being reported. Despite this rise, cool to cold weather persists in the North and Northeast, while cool mornings are expected in the Central, Eastern, and upper Southern regions. Residents are advised to take precautions against health issues related to the changing weather and be mindful of fire hazards due to dry conditions. Travelers are also urged to exercise caution when navigating areas with fog, as these conditions stem from a weakening high-pressu re system or cold air mass from China affecting upper Thailand, the upper Southern region, and the South China Sea.