Prepared by: Table of Contents Section 1. Introduction ........................................................................................................ 1-1 1.1 Background and Purpose.......................................................................................... 1-1 1.2 Authority ................................................................................................................... 1-2 1.3 Plan Organization ..................................................................................................... 1-2 Section 2. Community Profile ............................................................................................. 2-1 2.1 History of Cuyahoga County ..................................................................................... 2-1 2.2 Geography, Topography, and Climate ...................................................................... 2-2 2.2.1 Geography .............................................................................................................. 2-2 2.2.2 Topography ............................................................................................................. 2-2 2.2.3 Climate .................................................................................................................... 2-3 2.3 Population, Occupancy, and Demographics.............................................................. 2-4 2.3.1 Population ............................................................................................................... 2-4 2.4 Employment .............................................................................................................. 2-7 2.5 Land Use and Future Development Areas ................................................................ 2-7 Section 3. The Planning Process ........................................................................................ 3-1 3.1 Planning Process ...................................................................................................... 3-1 3.2 Organize Resources ................................................................................................. 3-2 3.2.1 Building the Planning Team .................................................................................... 3-2 3.2.2 Public Outreach ...................................................................................................... 3-4 3.2.3 Review and Incorporate Existing Information .......................................................... 3-8 3.2.4 Assess Risks ........................................................................................................... 3-8 3.2.5 Develop Mitigation Plan .......................................................................................... 3-9 Section 4. Hazard Identification & Risk Assessment (HIRA) ............................................... 4-1 4.1 Identifying the Hazards ............................................................................................. 4-1 4.2 Hazard Event Data.................................................................................................... 4-5 4.3 Event Narratives ....................................................................................................... 4-5 4.4 Hazard Profiles ......................................................................................................... 4-5 4.4.1 Threat and Hazard Identification and Risk Assessment (THIRA) ............................. 4-5 4.5 Critical Facilities ........................................................................................................ 4-6 4.6 Health Related Emergency ....................................................................................... 4-8 4.6.1 Hazard Identification ............................................................................................... 4-8 4.6.2 Regulatory Environment .......................................................................................... 4-9 4.6.3 Hazard Events/Historical Occurrences .................................................................... 4-9 4.6.4 Magnitude/Severity ............................................................................................... 4-10 4.6.5 Frequency/Probability of Future Occurrence ......................................................... 4-11 4.6.6 Inventory Assets Exposed To Health Related Emergencies .................................. 4-11 4.6.7 Potential Losses from Health Related Emergencies .............................................. 4-11 4.6.8 Response Planning ............................................................................................... 4-11 4.6.9 Health Related Emergencies HIRA Summary ....................................................... 4-11 4.7 Flooding .................................................................................................................. 4-12 4.7.1 Hazard Identification ............................................................................................. 4-12 4.7.2 Regulatory Environment ........................................................................................ 4-13 4.7.3 Hazard Events ...................................................................................................... 4-20 4.7.4 Historical Occurrences .......................................................................................... 4-22 4.7.5 Magnitude/Severity ............................................................................................... 4-23 4.7.6 Frequency/Probability of Future Occurrences ....................................................... 4-26 4.7.7 Inventory Assets Exposed to Flooding .................................................................. 4-26 4.7.8 Potential Losses from Flooding ............................................................................. 4-29 4.7.9 Land Use & Development Trends ......................................................................... 4-33 4.7.10 Flooding HIRA Summary ..................................................................................... 4-33 4.8 Extreme Temperatures ........................................................................................... 4-34 4.8.1 Hazard Identification ............................................................................................. 4-34 4.8.2 Regulatory Environment ........................................................................................ 4-35 4.8.3 Hazard Events ...................................................................................................... 4-35 4.8.4 Historical Occurrences .......................................................................................... 4-35 4.8.5 Magnitude/Severity ............................................................................................... 4-37 4.8.6 Frequency/Probability of Future Occurrences ....................................................... 4-39 4.8.7 Inventory Assets Exposed to Extreme Temperatures ............................................ 4-39 4.8.8 Potential Losses from Temperature Extremes ....................................................... 4-40 4.8.9 Land Use & Development Trends ......................................................................... 4-41 4.8.10 Temperature Extreme HIRA Summary ................................................................ 4-41 4.9 Severe Winter Storms ............................................................................................. 4-42 4.9.1 Hazard Identification ............................................................................................. 4-42 4.9.2 Regulatory Environment ........................................................................................ 4-44 4.9.3 Hazard Events ...................................................................................................... 4-44 4.9.4 Historical Occurrences .......................................................................................... 4-46 4.9.5 Magnitude/Severity ............................................................................................... 4-48 4.9.6 Frequency/Probability of Future Occurrences ....................................................... 4-50 4.9.7 Inventory Assets Exposed to Winter Storms ......................................................... 4-50 4.9.8 Potential Losses from Winter Storms .................................................................... 4-50 4.9.9 Land Use & Development Trends ......................................................................... 4-51 4.9.10 Winter Storm HIRA Summary ............................................................................. 4-51 4.10 Geologic Hazards ................................................................................................... 4-52 4.10.1 Hazard Identification ........................................................................................... 4-52 4.10.2 Regulatory Environment ...................................................................................... 4-55 4.10.3 Hazard Events .................................................................................................... 4-55 4.10.4 Historical Occurrences ........................................................................................ 4-56 4.10.5 Magnitude/Severity ............................................................................................. 4-57 4.10.6 Frequency/Probability of Future Occurrences ....................................................