惠州启动防汛Ⅳ级应急响应，多地发布暴雨红色预警！

Summary of Key Points Core Viewpoint - The Guangdong Meteorological Service Center has issued warnings for heavy rainfall in the region, indicating that the rain will not only continue but may intensify over the next few days [2][4]. Group 1: Weather Forecast and Warnings - From April 4 to 5, southern coastal areas are expected to experience heavy to extremely heavy rainfall, with localized areas facing severe conditions [4]. - As of April 4, red rainstorm warnings have been issued for several counties including Longmen, Heyuan, and Dongguan, while orange and yellow warnings are also in effect for other areas [2][5]. - The "train effect" phenomenon is causing continuous heavy rainfall in the same regions, leading to significant accumulation of rainwater [2]. Group 2: Emergency Response - The Huizhou Flood Control Command has activated a Level IV emergency response plan due to the anticipated heavy rainfall [4]. - Residents are advised to be vigilant against geological hazards such as landslides and flash floods, particularly during the night of April 4 to the morning of April 5 [5].