5 | | * '''Alerts''' -- The qualifiers of the alert message. Includes alert identifier, sender, message type, scope (audience), references to other cap alerts and other fields. |
6 | | * '''Alert information''' -- An alert can contain more than one information element, the primary purpose of this is to annotate the alert message in multiple languages. An information part of the alert contains fields that are pertinent to the actual subject and characters of the alert. Fields include: language, category of the alert, a short description of the event, expected response type, priority, urgency, severity, certainty, target audience, auxiliary codes and parameters as metadata to the event, time of effectiveness, onset and expiry, name of the sender, headline of the event, a url, contact information etc. |
7 | | * '''Resource''' -- One or more files attached to the information (could be things like a map of the affected area, documents containing instructions etc.) |
8 | | * '''Area''' -- Each alert information item may contain one or more area fields which describe the affected geographical area and optionally provide data to place it on a map. |
9 | | |
| 5 | This section of the guide is intended for authorized users with permissions to author alerts and approve for dissemination. The cycle of authoring and issuing an alert has several work flow combinations. These combinations are [# illustrated as state transitions in the blueprint]. In the subsequent sections we discuss the activities of: |
| 6 | [# How to CREATE an alert message?] The first step when an event of interest is declared as an event that should be notified. |
| 7 | [# How to UPDATE an alert message?] Execute this step when an alert that was issued needs to be updates with the current status |
| 8 | [# How to CANCEL an alert message"] Any alert that was issued erroneously must be followed by a message to cancel the previous message |
| 9 | [# How to CLEAR an alert message?] Issue an ALL CLEAR after the authorities have declared to pose no threat any longer |