Not all available CAP elements are used by HazCollect. Only the essential elements used for composing an NWEM are described in this course, including additional data elements provided at the HazCollect server.
Authoring software may vary in the specific labels that are used for the NWEM data elements, as well as value sources. Ultimately, you will need to consult your software documentation for specific implementation. For purposes of this training, a classification system based on the typical source of the values is used to categorize NWEM data elements.
NWEM Data Element Categories
The four categories are:
Software Derived Values
A comparable example from general usage would be the date and time stamp on an email message, derived from the user's computer system clock.
User Selected Values
A comparable example from general usage would be the selection of a U.S. state code from a pick list on an order form.
User Composed Values
A comparable example from general usage would be entering a street address on an order form.
NWS Supplied Values
An example is the addition of the phrase "BULLETIN - EAS ACTIVATION REQUESTED."
| Software Derived | User Selected | User Composed | NWS Supplied |
| senderName | status | headline | WMO Heading |
| identifier | msgType | description | AWIPS ID |
| source | language | instruction | Universal Geo Code (UGC) |
| sent/effective | event | --- | Broadcast Instruction |
| scope | areaDesc | --- | NWS Relaying Office |
| eventCode | expires | --- | Relay Text |
| reference | --- | --- | --- |