IRM Guide for Local Jurisdictions Step 3 – Give Context to the Risk Example Threat and Hazard Descriptions Threat/Hazard Group Threat/Hazard Type Flooding Natural Scenario: A large storm producing heavy rain, high winds and hail is followed by several additional storms causing continued downpours lasting for several days. The result is an unprecedented amount of rainfall leading to severe flooding across the region. Tornado Natural Scenario: An F4 category tornado coming out of the west traverses the northern portion of ABC County leaving a ½ mile wide path of destruction. Hazardous Material Incident Technological Scenario: A large release of a toxic substance in the afternoon near several neighborhoods and schools in ABC County. Cyber-Terrorism Human caused Scenario: Cyber intrusion into systems controlling the electrical power grid results in a massive loss of electrical power and internet capability for much of Ohio, including ABC County, and neighboring states for a prolonged period. Dam Failure Technological Scenario: A major dam breach occurs with little or no warning, impacting multiple downstream communities. Utility/Energy Interruption or Failure Technological Scenario: A utility interruption in ABC County causes a power outage for 50% of the population for a period of ten days. Infectious Diseases Natural Scenario: A highly infectious disease epidemic results in a large number of severe illnesses and deaths and causes an extended disruption to schools and businesses. Severe Winter Weather Natural Scenario: A serious ice storm brings high winds and covers most of ABC County in as much as two (2) inches of ice. Extreme Heat Natural Scenario: A heat event with a heat index of at least 105°F for more than three (3) hours per day occurs over a five (5) consecutive day period. Severe Summer Weather Natural Scenario: A severe thunderstorm with hail and winds over 50 miles per hour lasts over several hours with total rainfall of three (3) inches. Air and Water Technological Pollution/Contamination 1 IRM Guide for Local Jurisdictions Step 3 – Give Context to the Risk Scenario: An accident occurs in which sewage contaminates drinking water supplies. Transportation Accident-Aircraft Technological Scenario: An incident occurs where a passenger airplane crashes into a neighborhood in ABC County. Invasive Species Natural Scenario: An infestation of Ash Borer impacts multiple communities throughout ABC County. Drought Natural Scenario: An 8-week period with no rain severely impacts the growing season. Earthquakes Natural Scenario: A magnitude five (5) earthquake in Southeast Ohio causes minor to moderate damage to several communities within ABC County. Lone Wolf Terrorist Incident Human caused Scenario: A single domestic terrorist detonates an improvised explosive device (IED) within a county agency. WMD Terrorist Incident Human caused Scenario: An IED is exploded at a major sporting event in the county. Civil Disturbance Human cause Scenario: Civil unrest resulted in mass protests at several government facilities. Store fronts are destroyed and several buildings are burned. 2