Alert codes from the Common Alerting Protocol (CAP) version 0.7 Alert Message Dictionary. The appinfo for the schemas A code list that enumerates likelinesses of an occurrence of an event that raised an alert. Highly likely (probability greater than around 85%) or certain likely (probability greater than around 50%) Possible but not likely (probability less than or equal to around 50%) Not expected to occur (probability around 0) likely (probability greater than around 50%) Possible but not likely (probability less than or equal to around 50%) Certainty unknown Not expected to occur (probability around 0) Highly likely (probability greater than around 85%) or certain A code list that enumerates categories of an event that raised an alert. Pollution and other environmental Fire suppression and rescue Geophysical (inc. landslide) Medical and public health Utility, telecommunication, other non-transport infrastructure Meteorological (inc. flood) Other events Rescue and recovery General emergency and public safety Law enforcement, military, homeland and local/private security Public and private transportation A code list that enumerates severity levels of an event that raised an alert. Extraordinary threat to life or property Minimal threat to life or property Possible threat to life or property Significant threat to life or property Severity Unknown A code list that enumerates urgency levels of an event that raised an alert. Responsive action should be taken soon (within next hour) Refers to an event that is moderately probable in the near future Responsive action should be taken in the near future Responsive action should be taken immediately Refers to an event that is imminent (within next hour) Refers to an actual event that has occurred recently or is occurring Responsive action is no longer required Urgency not known