Typhoon Mangkhut in HK (2018) On 16 September 2018, the issuance of the Hurricane Signal No. 10 marked the arrival of Super Typhoon Mangkhut. It struck our city, causing large-scale damage that ranged from injuries (over 450 casualties), trees uprooting, disruption of transportation, flooding in low-lying areas, breakage of windows and curtain walls of buildings, and interruption of electricity or water supply in certain areas . Given the huge extent of damage, it is worthwhile to review the prevention, preparedness, response and recovery (PPRR) measures while reflecting on the lessons learned to prepare better for future hazards. Chapter 1: Prevention and Preparedness Phase Read Me Chapter 2：Response Phase Read Me Chapter 3：Recovery Phase Read Me Chapter 4：Closing Remarks Read Me References  A Wake up Call from Mangkhut, Hong Kong Observatory.