A short span of abnormal precipitation in the year 2018 has ravaged the southwestern state of Kerala. It has resulted in widespread flooding and landslides with more than 400 casualties. The present study has implemented the SAR (Synthetic Aperture Radar)-based Sentinel 1C band satellite data. The researchers have analyzed the remotely sensed data to examine the severely affected areas. The study area included Alappuzha, Kottayam, Thrissur, and Pathanamthitta districts. The daily and monthly precipitation data is acquired from the Indian Meteorological Department (IMD) and Tropical Rainfall Measuring Mission (TRMM). During 2018, Kerala has experienced a severe escalation in the volume of rainfall from June onwards till September. The current study has analyzed the spatial and temporal variation in the extent of severe flooding in Kerala during the monsoon months of 2018. The south-central parts of Kerala are most severely impacted by flooding. The districts of Alappuzha and Kottayam were severely affected, followed by Thrissur and Pathanamthitta, moderate to low. The outcomes of this assessment would be helpful for risk-informed planning in the pre-disaster context and help in decision-making for response planning and early recovery.

2018 年短暂的异常降水席卷了西南喀拉拉邦。它导致了大范围的洪水和山体滑坡，造成400多人伤亡。本研究实施了基于 SAR（合成孔径雷达）的 Sentinel 1C 波段卫星数据。研究人员分析了遥感数据，以检查受灾严重的地区。研究区域包括 Alappuzha、Kottayam、Thrissur 和 Pathanamthitta 地区。每日和每月降水数据来自印度气象局 (IMD) 和热带降雨测量任务 (TRMM)。2018 年，喀拉拉邦 从 6 月到 9 月，降雨量急剧增加。目前的研究分析了 2018 年季风月份喀拉拉邦严重洪水范围的时空变化。喀拉拉邦中南部地区受洪水影响最为严重。Alappuzha 和 Kottayam 地区受到严重影响，其次是 Thrissur 和 Pathanamthitta，中度至低度。该评估的结果将有助于在灾前环境中进行风险知情规划，并有助于做出响应规划和早期恢复的决策。