VIENTIANE, Sept. 23 (Xinhua) -- People across Laos are being urged to prepare for the potential impacts of Typhoon Ragasa, which is expected to bring thunderstorms, heavy rainfall, and strong winds throughout the country. A low-pressure system has passed over northern and central Laos, and the storm is expected to bring widespread rain to many parts of Laos, according to a report from the Department of Meteorology and Hydrology. The Lao weather bureau has issued a flash flood and landslide warning. Lao authorities urge residents to remain alert and prepare for continued rainfall in the coming days, which may trigger flash floods and landslides.